Display device

This application is the National Phase of PCT/KR2022/000197 filed on Jan. 6, 2022, which is hereby expressly incorporated by reference into the present application.

The present disclosure relates to a display device.

With the development of information society, there has been a growing demand for various types of display devices. In order to meet such demand, various display devices, such as a liquid crystal display (LCD), a plasma display panel (PDP), an electro luminescent display (ELD), a vacuum fluorescent display (VFD), an organic light emitting diode (OLED), and the like, have been developed and used.

Among them, an LCD panel includes a TFT substrate and a color substrate that are opposite each other with a liquid crystal layer interposed therebetween, so as to display an image using light provided from a backlight unit.

Recently, various research has been conducted on a structure that enables a slim bezel of a display device. In addition, numerous research has been conducted on a holder that prevents or suppresses the movement of a diffusion plate caused by thermal expansion or contraction.

It is an objective of the present disclosure to solve the above and other problems.

Another object may be to provide a coupling structure between a holder of a diffusion plate (or a light guide plate) and a frame.

Another object may be to provide a structure that can improve the reliability of coupling between a frame and a holder that occupies a relatively small area.

Another object may be to provide a structure that can allow a holder to remain coupled to a frame regardless of external shock, a change in temperature, etc.

Another object may be to provide a structure that can reduce manufacturing cost by coupling a holder to a frame without using a separate member such as double-sided tape.

Another object may be to provide a structure that can minimize leakage of light from a diffusion plate to the outside.

Another object may be to provide a structure that can couple a guide panel with a frame and guide the coupling.

In accordance with an aspect of the present disclosure to achieve the above and other objectives, a display device may include: a display panel; a frame positioned behind the display panel; a light source providing light to the display panel; an optical plate positioned between the display panel and the light source; a frame which is opposite to the display panel with respect to the optical plate and on which the optical plate is seated; and a holder adjacent to one side of the optical plate and coupled onto the frame, the holder may include: a plurality of protrusions formed at one surface of the holder that faces the one side of the optical plate; and a coupling portion protruding from the holder toward the frame, passing through the frame, and engaged with a rear surface of the frame.

Effect of Invention

A display device according to the present disclosure has the following effects.

According to at least one of the embodiments of the present disclosure, it is possible to provide a coupling structure between a holder of a diffusion plate (or a light guide plate) and a frame.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure that improves the reliability of coupling between a frame and a holder that occupies a relatively small area.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure that allows a holder to remain coupled to a frame regardless of external shock, a change in temperature, etc.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure that allows a holder to be coupled to a frame without using a separate member such as double-sided tape, thereby reducing manufacturing cost.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure that minimizes leakage of light from a diffusion plate to the outside.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure that couples a guide panel with a frame and guides the coupling.

Further scope of applicability of the present disclosure will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present disclosure are given by way of example only, since various changes and modifications within the idea and scope of the present disclosure may be clearly understood by those skilled in the art.

FIGS. 1 to 4 are diagrams illustrating examples of a display device related to the present disclosure.

FIGS. 5 to 29 are diagrams illustrating examples of a display device according to embodiments of the present disclosure.

Description will now be given in detail according to exemplary embodiments disclosed herein, with reference to the accompanying drawings. For the sake of brief description with reference to the drawings, the same or equivalent components may be denoted by the same reference numbers, and description thereof will not be repeated.

In the following description, a suffix such as “module” and “unit” may be used to refer to elements or components. Use of such a suffix herein is merely intended to facilitate description of the specification, and the suffix itself is not intended to give any special meaning or function.

In the present disclosure, that which is well known to one of ordinary skill in the relevant art has generally been omitted for the sake of brevity. The accompanying drawings are used to help easily understand the technical idea of the present disclosure and it should be understood that the idea of the present disclosure is not limited by the accompanying drawings. The idea of the present disclosure should be construed to extend to any alterations, equivalents, and substitutes besides the accompanying drawings.

It will be understood that although the terms “first”, “second”, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

It will be understood that when a component is referred to as being “connected to” or “coupled to” another component, it may be directly connected to or coupled to another component, or intervening components may be present. In contrast, when a component is referred to as being “directly connected to” or “directly coupled to” another component, there are no intervening components present.

As used herein, a singular representation is intended to include a plural representation unless the context clearly indicates otherwise.

It will be understood that the terms “comprises” and/or “has”, when used in this specification, specify the presence of a stated feature, number, step, operation, component, element, or combination thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or combinations thereof.

Referring to FIG. 1 , a display device 1 may include a display panel 10 . The display panel 10 may display a screen.

The display device 1 may include a first long side LS 1 , a second long side LS 2 opposite the first long side LS 1 , a first short side SS 1 adjacent to the first long side LS 1 and the second long side LS 2 , and a second short side SS 2 opposite the first short side SS 1 . For ease of explanation, it is illustrated and described that lengths of the first and second long sides LS 1 and LS 2 are greater than lengths of the first and second short sides SS 1 and SS 2 . However, the lengths of the first and second long sides LS 1 and LS 2 may be substantially equal to the lengths of the first and second short sides SS 1 and SS 2 .

A direction parallel to the long sides LS 1 and LS 2 of the display device 1 may be referred to as a left-and-right direction. A direction parallel to the short sides SS 1 and SS 2 of the display device 1 may be referred to as an up-and-down direction. A direction perpendicular to the long sides LS 1 and LS 2 and the short sides SS 1 and SS 2 of the display device 1 may be referred to as a front-and-rear direction.

A direction in which the display panel 10 displays an image may be referred to as a front (F, z), and a direction opposite to the front may be referred to as a rear (R). The first long side LS 1 may be referred to as an upper side (U, y). The second long side LS 2 may be referred to as a lower side (D). The first short side SS 1 may be referred to as a left side (Le, x). The second short side SS 2 may be referred to as a right side (Ri).

The first long side LS 1 , the second long side LS 2 , the first short side SS 1 , and the second short side SS 2 may be referred to as edges of the display device 1 . In addition, points where the first long side LS 1 , the second long LS 2 , the first short side SS 1 , and the second short side SS 2 meet one another may be referred to as corners.

For example, a point where the first short side SS 1 and the first long side LS 1 meet may be referred to as a first corner C 1 ; a point where the first long side LS 1 and the second short side SS 2 meet may be referred to as a second corner C 2 ; a point where the second short side SS 2 and the second long side LS 2 meet may be referred to as a third corner C 3 ; and a point where the second long side LS 2 and the first short side SS 1 meet may be referred to as a fourth corner C 4 .

Referring to FIG. 2 , the display device 1 may include a display panel 10 , a front cover 15 , a guide panel 20 , a backlight unit 30 , a frame 80 , and a back cover 89 .

The display panel 10 may define a front surface of the display device 1 and may display an image. The display panel 10 may display an image in such a manner that each of a plurality of pixels outputs red, green, or blue (RGB) light in accordance with timing. The display panel 10 may be divided into an active area in which an image is displayed and a de-active area in which no image is displayed. The display panel 10 may include a front substrate and a rear substrate that are disposed opposite each other with a liquid crystal layer interposed therebetween. The display panel 10 may be referred to as an LCD panel.

The front substrate may include a plurality of pixels, each of which consists of red, green, and blue subpixels. The front substrate may output light corresponding to red, green, or blue color according to a control signal.

The rear substrate may include switching elements. The rear substrate may switch a pixel electrode. For example, the pixel electrode may change the molecular arrangement of a liquid crystal layer in response to a control signal input from the outside. The liquid crystal layer may include liquid crystal molecules. The arrangement of liquid crystal molecules may be changed according to a voltage difference between the pixel electrode and a common electrode. The liquid crystal layer may transmit light from the backlight unit 30 to the front substrate or block the light.

The front cover 15 may cover a front surface and at least a portion of a side (or lateral) surface of the display panel 10 . The front cover 15 may be divided into a front cover positioned at the front surface of the display panel 10 and a side cover positioned at the side surface of the display panel 10 . The front cover and the side cover may be provided separately, or may be provided as one body. At least one of the front cover or the side cover may be omitted.

The guide panel 20 may surround the periphery of the display panel 10 , and may cover the side surface of the display panel 10 . The guide panel 20 may be coupled to the display panel 10 or support the display panel 10 . The guide panel 20 may be referred to as a panel guide or a side frame.

The backlight unit 30 may be positioned at the rear of the display panel 10 . The backlight unit 30 may include light sources. The backlight unit 30 may be coupled to the frame 80 at the front of the frame 80 . The backlight unit 30 may be driven by a full driving scheme or a partial driving scheme such as local dimming or impulsive driving. The backlight unit 30 may include an optical sheet 32 and an optical plate 31 .

The optical sheet 32 may allow light of the light source to be uniformly transmitted to the display panel 10 . The optical sheet 32 may consist of a plurality of layers. For example, the optical sheet 32 may include a prism sheet, a diffusion sheet, or the like. Meanwhile, a sheet coupling portion 32 d of the optical sheet 32 may be coupled to the front cover 15 , the frame 80 , or the back cover 89 .

The frame 80 may be positioned at the rear of the backlight unit 30 , and may support components of the display device 1 . For example, components such as the backlight unit 30 and a printed circuit board (PCB) on which a plurality of electronic components are positioned may be coupled to the frame 80 . The frame 80 may include a metal material such as an as aluminum alloy. The frame 80 may be referred to as a main frame or a module cover.

The back cover 89 may cover the rear of the frame 80 , and may be coupled to the frame 80 and/or the front cover 15 . For example, the back cover 89 may be an injection-molded part made of resin. As another example, the back cover 89 may include a metal material.

Referring to FIG. 3 , a substrate 40 , at least one light assembly 51 , and a reflective sheet 60 may be positioned at the rear of the optical plate 31 . The optical sheet 32 may be positioned at the front of the optical plate 31 . The optical plate 31 may be referred to as a diffusion plate 31 .

The substrate 40 may be configured as a plurality of straps extending in the left-and-right direction and spaced apart from each other in the up-and down direction. At least one light assembly 51 may be mounted on the substrate 40 . An electrode pattern may be formed on the substrate 40 so as to connect an adaptor to the light assembly 51 . For example, the electrode pattern may be a carbon nanotube (CNT) electrode pattern. The substrate 40 may be made of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), or silicon. The substrate 40 may be a printed circuit board (PCB) on which at least one light assembly 51 is mounted.

The light assembly 51 may be a light emitting diode (LED) chip or an LED package including at least one LED chip. The light assembly 51 may be configured as a colored LED emitting at least one of red, green, and blue light, or a white LED. The colored LED may include at least one of a red LED, a green LED, or a blue LED.

The reflective sheet 60 may be positioned at the front of the substrate 40 . At least one hole 60 a may be formed through the reflective sheet 60 , and the light assembly 51 may be positioned in the hole 60 a . The reflective sheet 60 may reflect light, which is provided by the light assembly 51 or reflected by the diffusion plate 31 , forward. For example, the reflective sheet 60 may include a metal and/or a metal oxide having a high reflectance such as at least one of aluminum (Al), silver (Ag), gold (Au), or titanium dioxide (TiO2).

An air gap may be formed between the reflective sheet 60 and the diffusion plate 31 . The air gap may serve as a buffer, and may allow the light provided by the light assembly 51 to spread widely. A supporter 39 may be positioned between the reflective sheet 60 and the diffusion plate 31 to thereby define the air gap.

The diffusion plate 31 may be positioned at the front of the reflective sheet 60 . The diffusion plate 31 may be positioned between the reflective sheet 60 and the optical sheet 32 .

The optical sheet 32 may include at least one sheet. For example, the optical sheet 32 may include one or more prism sheets and/or one or more diffusion sheets. The plurality of sheets of the optical sheet 32 may be attached to each other or in close contact with each other.

In detail, the optical sheet 32 may include a plurality of sheets having different functions. For example, the optical sheet 32 may include a first optical sheet 32 a , a second optical sheet 32 b , and a third optical sheet 32 c . For example, the first optical sheet 32 a may be a diffusion sheet, and the second optical sheet 32 b and the third optical sheet 32 c may be a prism sheet. The diffusion sheet may prevent light emitted from the diffusion plate 31 from being partially concentrated, thereby achieving more uniform distribution of light. The prism sheet may collect or condense light from the diffusion sheet 31 and provide the light to the display panel 10 . The number and/or position of the diffusion sheet and the prism sheet may vary.

Referring to FIG. 4 , a substrate 40 ′, at least one light assembly 51 ′, a reflective sheet 60 ′, and an optical plate 33 may be positioned at the rear of the diffusion plate 31 . The optical sheet 32 may be positioned at the front of the diffusion plate 31 .

The substrate 40 ′ may extend in the left-and-right direction, and may be adjacent to the periphery of the optical plate 33 . For example, the substrate 40 ′ may be adjacent to a lower side of the optical plate 33 . At least one light assembly 51 ′ may be mounted on the substrate 40 ′. An electrode pattern may be formed on the substrate 40 ′ so as to connect an adaptor to the light assembly 51 ′. For example, the electrode pattern may be a carbon nanotube (CNT) electrode pattern. The substrate 40 ′ may be made of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), or silicon. The substrate 40 ′ may be a printed circuit board (PCB) on which at least one light assembly 51 ′ is mounted.

The light assembly 51 ′ may be a light emitting diode (LED) chip or an LED package including at least one LED chip. The light assembly 51 ′ may be configured as a colored LED emitting at least one of red, green, and blue light, or a white LED. The colored LED may include at least one of a red LED, a green LED, or a blue LED.

The optical plate 33 may be positioned at the rear of the optical sheet 32 . Most of the light provided by the light assembly 51 ′ may be transmitted into the optical plate 33 . The optical plate 33 may reflect the light forward from the light assembly 51 ′. The optical plate 33 may be referred to as a light guide plate 33 .

The reflective sheet 60 ′ may be positioned at the rear of the light guide plate 33 . The reflective sheet 60 ′ may reflect light, which is provided by the light assembly 51 ′ or reflected by the light guide plate 33 , forward. For example, the reflective sheet 60 ′ may include a metal and/or a metal oxide having a high reflectance such as at least one of aluminum (Al), silver (Ag), gold (Au), or titanium dioxide (TiO2). Meanwhile, the diffusion plate 31 between the light guide plate 33 and the optical sheet 32 may be omitted.

Referring to FIGS. 5 and 6 , a display device may include a display panel 10 , a side frame 20 , a backlight unit 30 , a frame 80 , and a back cover 89 .

The display panel 10 may define a front surface of the display device, and may display an image. The display panel 10 may display an image in such a manner that each of a plurality of pixels outputs red, green, or blue (RGB) light in accordance with timing. The display panel 10 may be divided into an active area in which an image is displayed and a de-active area in which no image is displayed. The display panel 10 may include a front substrate and a rear substrate that are opposite each other with a liquid crystal layer interposed therebetween. The display panel 10 may be referred to as an LCD panel.

The front substrate may include a plurality of pixels, each of which consists of red, green, and blue subpixels. The front substrate may output light corresponding to red, green, or blue color according to a control signal.

The rear substrate may include switching elements. The rear substrate may switch a pixel electrode. For example, the pixel electrode may change the molecular arrangement of a liquid crystal layer in response to a control signal input from the outside. The liquid crystal layer may include liquid crystal molecules. The arrangement of liquid crystal molecules may be changed according to a voltage difference between the pixel electrode and a common electrode. The liquid crystal layer may transmit light from the backlight unit 30 to the front substrate or block the light.

The side frame 20 may extend along the periphery of the display panel 10 , and may cover a side (or lateral) surface of the display panel 10 . The side frame 20 may be coupled to the display panel 10 , and may support the display panel 10 . The side frame 20 may be referred to as a guide panel 20 .

The backlight unit 30 may be positioned at the rear of the display panel 10 . The backlight unit 30 may be coupled to the frame 80 at the front of the frame 80 . The backlight unit 30 may be driven by a full driving scheme or a partial driving scheme such as local dimming or impulsive driving. The backlight unit 30 may include light sources 51 configured to emit light forward, a substrate 40 on which the light sources 51 are mounted, lenses 53 covering the light sources 51 , a reflective sheet 60 covering a front surface of the substrate 40 , an optical plate 31 positioned at the front of the reflective sheet 60 , and an optical sheet 32 positioned at the front of the optical plate 31 .

The light source 51 may be a light emitting diode (LED) chip or an LED package including at least one LED chip. For example, the light source 51 may be a colored LED emitting at least one of red, green, and blue light, or a white LED. For example, the light source 51 may be a mini-LED. A power supply (not shown) of the display device may provide power to the light source 51 through the substrate 40 .

A plurality of lenses 53 may cover a plurality of light sources 51 , respectively. An accommodating portion (no reference numeral) may be formed in a lower surface of the lens 53 , and may surround the light source 51 . A dome portion (no reference numeral) may define an upper surface of the lens 53 , and may have a substantially hemispherical shape. The lens 53 may include at least one of silicone, polymethyl methacrylate (PMMA), or polycarbonate (PC). Light provided by the light source 51 may be refracted or reflected by the lens 53 to spread over a wider beam angle than the light source 51 .

The reflective sheet 60 may include at least one of a metal and a metal oxide. For example, the reflective sheet 60 may include a metal and/or a metal oxide having a high reflectance such as at least one of aluminum (Al), silver (Ag), gold (Au), or titanium dioxide (TiO2). For example, resin may be deposited on or applied to the reflective sheet 60 so as to diffuse light of the light source 51 .

The optical plate 31 may be disposed opposite the display panel 10 with respect to the side frame 20 . The optical plate 31 may allow light of the light source 51 to be uniformly transmitted to the display panel 10 . The optical plate 31 may be referred to as a diffusion plate 31 . Alternatively, instead of the optical plate 31 , the optical plate 33 described above with reference to FIG. 4 may be disposed opposite the display panel 10 with respect to the side frame 20 . In this case, instead of the light source 51 , the light source 51 ′ described above with reference to FIG. 4 may provide light to one side of the optical plate 33 , and the reflective sheet 60 ′ may be positioned at a rear surface of the optical plate 33 . The optical plate 33 may be referred to as a light guide plate 33 . In the following, for the sake of brevity, a holder ( 91 , 92 , 93 ) will be described with respect to the diffusion plate 31 . However, the description of the diffusion plate 31 and the holder ( 91 , 92 , 93 ) is equally applicable to the light guide plate 33 and the holder ( 91 , 92 , 93 ). In other words, the holder ( 91 , 92 , 93 ) may prevent or suppress movement of the diffusion plate 31 or the light guide plate 33 .

The diffusion plate 31 may be positioned between the reflective sheet 60 and the optical sheet 32 . The diffusion plate 31 may diffuse light of the light source 51 . In addition, an air gap may be formed between the reflective sheet 60 and the diffusion plate 31 . The air gap may serve as a buffer, and may allow the light of the light source 51 to spread widely.

A supporter 39 may be positioned between the reflective sheet 60 and the diffusion plate 31 , so that a first side thereof may be coupled to the reflective sheet 60 and a second side thereof may support the diffusion plate 31 . The supporter 39 may be referred to as a spacer.

The optical sheet 32 may be adjacent to or in contact with a front surface of the diffusion plate 31 . The optical sheet 32 may include at least one sheet. For example, the optical sheet 32 may include a plurality of sheets having different functions, and the plurality of sheets may be attached to each other or in close contact with each other. For example, a first optical sheet 32 a may be a diffusion sheet, and a second optical sheet 32 b may be a prism sheet. The diffusion sheet may prevent light from the diffusion plate 31 from being partially concentrated, thereby achieving uniform distribution of light. The prism sheet may collect or condense light from the diffusion sheet and provide the light to the display panel 10 . Here, the number and/or position of the diffusion sheet and the prism sheet may vary.

For example, the optical sheet 32 may change the wavelength or color of light emitted from the light source 51 . For example, the optical sheet 32 may include a red-based phosphor and/or a green-based phosphor. In this case, the light source 51 may provide blue-based light, and the optical sheet 32 may convert the blue light of the light source 51 to white light. The optical sheet 32 may be referred to as a quantum dot (QD) sheet.

The frame 80 may be positioned at the rear of the backlight unit 30 . The display panel 10 , the side frame 20 , and the backlight unit 30 may be coupled to the frame 80 . The frame 80 may support the components of the display device described above and below. For example, the frame 80 may include a metal material such as an as aluminum alloy. The frame 80 may be referred to as a main frame, a module cover, or a cover bottom.

The back cover 89 may cover the rear of the frame 80 , and may be coupled to the frame 80 . For example, the back cover 89 may be an injection-molded part made of resin. As another example, the back cover 89 may include a metal material.

Referring to FIG. 7 , the frame 80 may have a generally rectangular flat plate shape. A plurality of holders 91 , 92 , and 93 may be adjacent to an edge of the frame 80 , and may be detachably coupled to a front surface of the frame 80 . The plurality of holders 91 , 92 , and 93 may include a resin or silicone material.

An upper holder 91 may be adjacent to an upper side 80 U of the frame 80 , and may be detachably coupled to the front surface of the frame 80 . A plurality of upper holders 91 a , 91 b , 91 c , 91 d , and 91 e may be spaced apart from each other along the upper side 80 U of the frame 80 . For example, five upper holders 91 a , 91 b , 91 c , 91 d , and 91 e may be provided. A first upper holder 91 a may be adjacent to a corner where the upper side 80 U and a left side 80 L of the frame 80 meet, and a fifth upper holder 91 e may be adjacent to a corner where the upper side 80 U and a right side 80 R of the frame 80 meet. A second upper holder 91 b , a third upper holder 91 c , and a fourth upper holder 91 d may be positioned between the first upper holder 91 a and the fifth upper holder 91 e . For example, the plurality of upper holders 91 a , 91 b , 91 c , 91 d , and 91 e may have the same shape.

A left holder 92 may be adjacent to the left side 80 L of the frame 80 , and may be detachably coupled to the front surface of the frame 80 . A plurality of left holders 92 a and 92 b may be spaced apart from each other along the left side 80 L of the frame 80 . For example, two left holders 92 a and 92 b may be provided. A first left holder 92 a may be adjacent to the corner where the upper side 80 U and the left side 80 L of the frame 80 meet, and a second left holder 92 b may be adjacent to a corner where a lower side 80 D and the left side 80 L of the frame 80 meet. For example, the plurality of left holders 92 a and 92 b may have the same shape.

A right holder 93 may be adjacent to the right side 80 R of the frame 80 , and may be detachably coupled to the front surface of the frame 80 . A plurality of right holders 93 a and 93 b may be spaced apart from each other along the right side 80 R of the frame 80 . For example, two right holders 93 a and 93 b may be provided. A first right holder 93 a may be adjacent to the corner where the upper side 80 U and the right side 80 R of the frame 80 meet, and a second right holder 93 b may be adjacent to a corner where the lower side 80 D and the right side 80 R of the frame 80 meet. For example, the plurality of right holders 93 a and 93 b may have the same shape.

As another example, the left holder 92 and the right holder 93 may be left-right symmetric with respect to a vertical line passing through a center of the frame 80 .

Referring to FIG. 8 , the frame 80 may include a pressed portion 811 , an inclined portion 812 , an upper support portion 813 a , and an upper bending portion 80 aa . The pressed portion 811 may be formed by being pressed rearward from the front surface of the frame 80 . The inclined portion 812 may be bent obliquely forward from an upper side of the pressed portion 811 . The upper support portion 813 a may be bent upward from the inclined portion 812 . The upper bending portion 80 aa may be bent forward from the upper support portion 813 a . The upper bending portion 80 aa may be referred to as an upper rib or an upper wall.

An insertion portion 80 aag may be formed by being recessed downward from an upper surface of the upper bending portion 80 aa . The insertion portion 80 aag may be a groove of an inverted trapezoidal shape. A front end 80 aat of the insertion portion 80 aag may form a step ga with respect to a front end of the upper bending portion 80 aa.

An upper hole 813 a 1 , 813 a 2 may be formed through the upper support portion 813 a in the front-and-rear direction. A portion of the upper hole 813 a 1 , 813 a 2 may be formed through the upper bending portion 80 aa in the up-and-down direction. A first upper hole 813 a 1 may be disposed opposite a second upper hole 813 a 2 with respect to the insertion portion 80 aag . The first upper hole 813 a 1 and the second upper hole 813 a 2 may have the same shape, namely, an oval shape. In this case, an upper coupling portion 913 a , 913 b , which will be described below, may have a head made of an elastic material to allow the head to pass through the upper hole 813 a 1 , 813 a 2 having a smaller diameter than the head.

A protruding portion 80 aad may protrude forward from the front end 80 aat of the insertion portion 80 aag . The protruding portion 80 aad may be positioned at a central portion of the insertion portion 80 aag.

The upper holder 91 may be positioned at the front of the frame 80 . The upper holder 91 may include an upper body 910 , a middle part 911 , upper protrusions 912 a , 912 b , and the upper coupling portion 913 a , 913 b . For example, the upper body 910 , the middle part 911 , the upper protrusions 912 a , 912 b , and the upper coupling portion 913 a , 913 b may be formed as one body. The upper holder 91 may have elasticity.

The upper body 910 may be elongated in the left-and-right direction. The upper body 910 may have a generally cuboid shape that is horizontally long.

The middle part 911 may be formed at a central portion of the upper body 910 . An insertion groove 911 g may be positioned between the middle part 911 and the upper body 910 , and may be formed along the insertion portion 80 aag (see Ua). The insertion groove 911 g may be aligned with the front end 80 aat of the insertion portion 80 aag . A portion under a central portion of the middle part 911 of the upper body 910 may be cut out. The cut-out portion may be aligned with the protruding portion 80 aad in the front-and-rear direction. A first end 911 a of the middle part 911 may be adjacent to a left end of the upper body 910 , and may protrude upward from an upper surface of the upper body 910 . A second end 911 b of the middle part 911 may be adjacent to a right end of the upper body 910 , and may protrude upward from the upper surface of the upper body 910 .

A plurality of upper protrusions 912 a , 912 b may be formed on a lower surface of the upper body 910 . The plurality of upper protrusions 912 a , 912 b may be formed at regular intervals, and may have a generally comb shape. First upper protrusions 912 a may be disposed opposite second upper protrusions 912 b with respect to the cut-out portion.

The upper coupling portion 913 a , 913 b may protrude rearward from a rear surface of the upper body 910 . A first upper coupling portion 913 a may be adjacent to the left end of the upper body 910 , and may be aligned with the first upper hole 813 a 1 . A second upper coupling portion 913 b may be adjacent to the right end of the upper body 910 , and may be aligned with the second upper hole 813 a 2 . Each of the first upper coupling portion 913 a and the second upper coupling portion 913 b may include a neck protruding from the upper body 910 and a head connected to the neck. A diameter of the head may be greater than a diameter of the neck. The upper hole 813 a 1 , 813 a 2 may have a diameter equal or similar to the diameter of the neck and less than the diameter of the head. For example, the diameter of the head may be 0.6 to 0.8 mm greater than the diameter of the upper hole 813 a 1 , 813 a 2 . For example, the sum of lengths of the neck and the head may be 0.3 to 0.4 mm greater than a thickness of the upper support portion 813 a.

Referring to FIG. 9 , an upper hole 813 a 1 , 813 a 2 may be formed through the upper support portion 813 a in the front-and-rear direction. The upper hole 813 a 1 , 813 a 2 may be offset from the upper bending portion 80 aa . A first upper hole 813 a 1 may be disposed opposite a second upper hole 813 a 2 with respect to the insertion portion 80 aag . The first upper hole 813 a 1 and the second upper hole 813 a 2 may have the same shape, namely, an oval shape. In this case, the head of the upper coupling portion 913 a , 913 b that is made of an elastic material may pass through the upper hole 813 a 1 , 813 a 2 having a smaller diameter than the head.

Referring to FIGS. 10 and 11 , the upper body 910 may be seated on the upper support portion 813 a . The middle part 911 may be seated on the insertion portion 80 aag . The insertion portion 80 aag may be inserted into the insertion groove 911 g (see FIGS. 8 and 9 ).

The first end 911 a of the middle part 911 may be positioned in a step between the upper bending portion 80 aa and the insertion portion 80 aag , and leftward and rearward movement of the middle part 911 may be limited by the upper bending portion 80 aa and the insertion portion 80 aag . The second end 911 b of the middle part 911 may be positioned in the step between the upper bending portion 80 aa and the insertion portion 80 aag , and rightward and rearward movement of the middle part 911 may be limited by the upper bending portion 80 aa and the insertion portion 80 aag.

The upper surface of the upper body 910 may be in contact with an inner surface of the upper bending portion 80 aa . In addition, a portion that defines the insertion groove 911 g (see FIGS. 8 and 9 ) of the upper body 910 may be in contact with an inner surface of the insertion portion 80 aag . Thus, the upper bending portion 80 aa and the insertion portion 80 aag may limit or restrict upward movement of the upper holder 91 .

The upper coupling portion 913 a , 913 b may be inserted into and coupled to the upper hole 813 a 1 , 813 a 2 (see FIGS. 8 and 9 ). In detail, the neck of the upper coupling portion 913 a , 913 b may pass through the upper hole 813 a 1 , 813 a 2 , and the head of the upper coupling portion 913 a , 913 b may be engaged with a rear surface of the upper support portion 813 a . Thus, the coupling structure between the upper coupling portion 913 a , 913 b and the upper hole 813 a 1 , 813 a 2 may limit or restrict the left and right movement and back and forth movement of the upper holder 91 .

Meanwhile, a front surface of the middle part 911 may be lowered rearward from a front surface of the upper body 91 to thereby form a step. The protruding portion 80 aad may be positioned between the first upper protrusions 912 a and the second upper protrusions 912 b , and may support a lower side of the upper holder 91 .

Referring to FIG. 12 , the frame 80 may include a pressed portion 811 , an inclined portion 812 , a right support portion 813 d , and a right bending portion 80 dd . The pressed portion 811 may be formed by being pressed rearward from the front surface of the frame 80 . The inclined portion 812 may be bent obliquely forward from a right side of the pressed portion 811 . The right support portion 813 d may be bent rightward from the inclined portion 812 . The right bending portion 80 dd may be bent forward from the right support portion 813 d . The right bending portion 80 dd may be referred to as a right rib or a right wall.

A right hole 813 d 1 , 813 d 2 may be formed through the right support portion 813 d in the front-and-rear direction. For example, a portion of the right hole 813 d 1 , 813 d 2 may be formed through the right bending portion 80 dd in the left-and-right direction. As another example, the right hole 813 d 1 , 813 d 2 may be offset from the right bending portion 80 dd . A first right hole 813 d 1 and a second right hole 813 d 2 may be spaced apart from each other in the up-and-down direction. The first right hole 813 d 1 and the second right hole 813 d 2 may have the same shape, namely, an oval shape. In this case, a right coupling portion 933 a , 933 b , which will be described below; may have a head made of an elastic material to allow the head to pass through the right hole 813 d 1 , 813 d 2 having a smaller diameter than the head.

The right holder 93 may be positioned at the front of the frame 80 . The right holder 93 may include a right body 930 , right protrusions 932 , and the right coupling portion 933 a , 933 b . For example, the right body 930 , the right protrusions 932 , and the right coupling portion 933 a , 933 b may be formed as one body. The right holder 93 may have elasticity.

The right body 930 may be elongated in the up-and-down direction. The right body 930 may have a generally cuboid shape that is vertically long.

A plurality of right protrusions 932 may be formed on a left surface of the right body 930 . The plurality of right protrusions 932 may be formed at regular intervals, and may have a generally comb shape.

The right coupling portion 933 a , 933 b may protrude rearward from a rear surface of the right body 930 . A first right coupling portion 933 a may be adjacent to an upper end of the right body 930 , and may be aligned with the first right hole 813 d 1 . A second right coupling portion 933 b may be adjacent to a lower end of the right body 930 , and may be aligned with the second right hole 813 d 2 . Each of the first right coupling portion 933 a and the second right coupling portion 933 b may include a neck protruding from the right body 930 and a head connected to the neck. A diameter of the head may be greater than a diameter of the neck. The right hole 813 d 1 , 813 d 2 may have a diameter equal or similar to the diameter of the neck and less than the diameter of the head. For example, the diameter of the head may be 0.6 to 0.8 mm greater than the diameter of the right hole 813 d 1 , 813 d 2 . For example, the sum of lengths of the neck and the head may be 0.3 to 0.4 mm greater than a thickness of the right support portion 813 d.

Referring to FIGS. 13 and 14 , the right body 930 may be seated on the right support portion 813 d . A right surface of the right body 930 may be in contact with an inner surface of the right bending portion 80 dd . Thus, the right bending portion 80 dd may limit or restrict rightward movement of the right holder 93 .

The right coupling portion 933 a , 933 b may be inserted into and coupled to the right hole 813 d 1 , 813 d 2 (see FIG. 12 ). In detail, the neck of the right coupling portion 933 a , 933 b may pass through the right hole 813 d 1 , 813 d 2 , and the head of the right coupling portion 933 a , 933 b may be engaged with a rear surface of the right support portion 813 d . Thus, the coupling structure between the right coupling portion 933 a , 933 b and the right hole 813 d 1 , 813 d 2 may limit or restrict the up and down movement and back and forth movement of the right holder 93 .

The above description of the right holder 93 is equally applicable to the first right holder 93 a and the second right holder 93 b.

Referring to FIG. 15 , the frame 80 may include a pressed portion 811 , an inclined portion 812 , a left support portion 813 c , and a left bending portion 80 cc . The pressed portion 811 may be formed by being pressed rearward from the front surface of the frame 80 . The inclined portion 812 may be bent obliquely forward from a left side of the pressed portion 811 . The left support portion 813 c may be bent leftward from the inclined portion 812 . The left bending portion 80 cc may be bent forward from the left support portion 813 c . The left bending portion 80 cc may be referred to as a left rib or a left wall.

A left hole 813 c 1 , 813 c 2 may be formed through the left support portion 813 c in the front-and-rear direction. For example, a portion of the left hole 813 c 1 , 813 c 2 may be formed through the left bending portion 80 cc in the left-and-right direction. As another example, the left hole 813 c 1 , 813 c 2 may be offset from the left bending portion 80 cc . A first left hole 813 c 1 and a second left hole 813 c 2 may be spaced apart from each other in the up-and-down direction. The first left hole 813 c 1 and the second left hole 813 c 2 may have the same shape, namely, an oval shape. In this case, a left coupling portion 923 a , 923 b , which will be described below, may have a head made of an elastic material to allow the head to pass through the left hole 813 c 1 , 813 c 2 having a smaller diameter than the head.

The left holder 92 may be positioned at the front of the frame 80 . The left holder 92 may include a left body 920 , left protrusions 922 , and the left coupling portion 923 a , 923 b . For example, the left body 920 , the left protrusions 922 , and the left coupling portion 923 a , 923 b may be formed as one body. The left holder 92 may have elasticity.

The left body 920 may be elongated in the up-and-down direction. The left body 920 may have a generally cuboid shape that is vertically long.

A plurality of left protrusions 922 may be formed on a right surface of the left body 920 . The plurality of left protrusions 922 may be formed at regular intervals, and may have a generally comb shape.

The left coupling portion 923 a , 923 b may protrude rearward from a rear surface of the left body 920 . A first left coupling portion 923 a may be adjacent to an upper end of the left body 920 , and may be aligned with the first left hole 813 c 1 . A second left coupling portion 923 b may be adjacent to a lower end of the left body 920 , and may be aligned with the second left hole 813 c 2 . Each of the first left coupling portion 923 a and the second left coupling portion 923 b may include a neck protruding from the left body 920 and a head connected to the neck. A diameter of the head may be greater than a diameter of the neck. The left hole 813 c 1 , 813 c 2 may have a diameter equal or similar to the diameter of the neck and less than the diameter of the head. For example, the diameter of the head may be 0.6 to 0.8 mm greater than the diameter of the left hole 813 c 1 , 813 c 2 . For example, the sum of lengths of the neck and the head may be 0.3 to 0.4 mm greater than a thickness of the left support portion 813 c.

Meanwhile, a lower support portion 813 b may extend horizontally between a lower end of the left support portion 813 c and a lower end of the right support portion 813 d . A lower bending portion 80 bb may be bent rearward from the lower support portion 813 b . The lower bending portion 80 bb may be referred to as a lower rib or a lower wall.

Referring to FIGS. 16 and 17 , the left body 920 may be seated on the left support portion 813 c . A left surface of the left body 920 may be in contact with an inner surface of the left bending portion 80 cc . Thus, the left bending portion 80 cc may limit or restrict leftward movement of the left holder 92 .

The left coupling portion 923 a , 923 b may be inserted into and coupled to the left hole 813 c 1 , 813 c 2 (see FIG. 15 ). In detail, the neck of the left coupling portion 923 a , 923 b may pass through the left hole 813 c 1 , 813 c 2 , and the head of the left coupling portion 923 a , 923 b may be engaged with a rear surface of the left support portion 813 c . Thus, the coupling structure between the left coupling portion 923 a , 923 b and the left hole 813 c 1 , 813 c 2 may limit or restrict the up and down movement and back and forth movement of the left holder 92 .

The above description of the left holder 92 is equally applicable to the first left holder 92 a and the second left holder 92 b.

Referring to FIG. 18 , the frame 80 may include a flat portion 81 . The flat portion 81 may define the front surface of the frame 80 . A heat sink 83 may cover the front of the flat portion 81 , and may be coupled to the flat portion 81 . A front surface of the heat sink 83 may be flat.

A side portion 70 may be disposed at an edge of the heat sink 83 . The side portion 70 may include at least one of a metal or a metal oxide as a reflective material. For example, the side portion 70 may include a metal and/or a metal oxide having a high reflectance such as at least one of aluminum (Al), silver (Ag), gold (Au), or titanium dioxide (TiO2). For example, resin may be deposited on or applied to the side portion 70 .

In addition, the side portion 70 may include a first side portion 71 , a second side portion 72 , a third side portion 73 , and a fourth side portion 74 . The side portion 70 may be referred to as a chamfer portion.

Referring to FIG. 19 , the substrate 40 may cover the front of the heat sink 83 , and may be coupled to the heat sink 83 . For example, the substrate 40 may include at least one of polycarbonate (PC), polyethylene terephthalate (PET), glass, or silicon. The substrate 40 may be a printed circuit board (PCB).

For example, the substrate 40 may have a quadrangular plate shape. As another example, the substrate 40 may have a strap shape that is horizontally long (see FIG. 3 ). As another example, the substrate 40 may include a first plate that is vertically long and a plurality of second plates that extend horizontally from the first plate in an elongated manner, so as to have a generally fork shape.

At least one substrate 40 may be provided. The substrate 40 may include a plurality of substrates 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , and 49 adjacent to each other. A first substrate 41 , a second substrate 42 , a third substrate 43 , a fourth substrate 44 , a fifth substrate 45 , a sixth substrate 46 , a seventh substrate 47 , an eighth substrate 48 , and a ninth substrate 49 may be coupled to a first area 83 A 1 , a second area 83 A 2 , a third area 83 A 3 , a fourth area 83 A 4 , a fifth area 83 A 5 , a sixth area 83 A 6 , a seventh area 83 A 7 , an eighth area 83 A 8 and a ninth area 83 A 9 of the heat sink 83 , respectively.

A plurality of lenses 53 may respectively cover a plurality of light sources 51 mounted on the substrate 40 . A power supply (not shown) of the display device may supply power to the light sources 51 through connectors (not shown) mounted on a rear surface of the substrate 40 .

The reflective sheet 60 may cover the front of the substrate 40 , and may be coupled to the substrate 40 . The lenses 53 may be positioned in respective holes 60 a of the reflective sheet 60 . For example, the reflective sheet 60 may have a quadrangular plate shape.

At least one reflective sheet 60 may be provided. The reflective sheet 60 may include a plurality of reflective sheets 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , and 69 adjacent to each other. A first reflective sheet 61 , a second reflective sheet 62 , a third reflective sheet 63 , a fourth reflective sheet 64 , a fifth reflective sheet 65 , a sixth reflective sheet 66 , a seventh sheet 67 , an eighth reflective sheet 68 , and a ninth reflective sheet 69 may be coupled to the first substrate 41 , the second substrate 42 , the third substrate 43 , the fourth substrate 44 , the fifth substrate 45 , the sixth substrate 46 , the seventh substrate 47 , the eighth substrate 48 , and the ninth substrate 49 , respectively.

Referring to FIGS. 20 and 21 , an upper side of the diffusion plate 31 may be adjacent to or in contact with the bottom of the upper protrusions 912 a , 912 b of the upper holder 91 . A right side of the diffusion plate 31 may be adjacent to or in contact with the left side of the right protrusions 932 (see FIG. 14 ) of the right holder 93 . A left side of the diffusion plate 31 may be adjacent to or in contact with the right side of the left protrusions 922 (see FIG. 17 ) of the left holder 92 . A lower side of the diffusion plate 31 may be adjacent to or seated on a support portion 80 e . A plurality of support portions 80 e may protrude forward from the lower support portion 813 b (see FIG. 15 ), and may be spaced apart from each other in the left-and-right direction.

Accordingly, the diffusion plate 31 may be positioned between the upper holder 91 , the right holder 93 , the left holder 92 , and the support portion 80 e . In addition, an upper gap (no reference numeral) may be formed between the upper side of the diffusion plate 31 and the upper bending portion 80 aa , a right gap (no reference numeral) may be formed between the right side of the diffusion plate 31 and the right bending portion 80 dd , and a left gap (no reference numeral) may be formed between the left side of the diffusion plate 31 and the left bending portion 80 cc (see FIG. 17 ).

Here, the diffusion plate 31 may be deformed. For example, when the display device is operated, the temperature of the diffusion plate 31 may be increased, which may cause deformation of the diffusion plate 31 . The upper gap, the right gap, and the left gap may be gaps for thermal expansion or contraction of the diffusion plate 31 . The protrusions 912 a , 912 b , 932 , and 922 may be laid on their side when pushed by the diffusion plate 31 , and may be gradually restored to their original state when the force applied to the protrusions 912 a , 912 b , 932 , and 922 by the diffusion plate 31 is released. That is, the protrusions 912 a , 912 b , 932 , and 922 may prevent or suppress movement of the diffusion plate 31 . In addition, the holders 91 , 92 , and 93 may prevent light from leaking from the diffusion plate 31 toward the edge of the frame 80 .

Meanwhile, the diffusion plate 31 may be spaced forward from the reflective sheet 60 (see FIG. 6 ). The supporter 39 (see FIG. 6 ) may support the diffusion plate 31 between the diffusion plate 31 and the reflective sheet 60 .

The optical sheet 32 a , 32 b may be positioned at the front of the diffusion plate 31 . The optical sheet 32 a , 32 b may be coupled to the front surface of the diffusion plate 31 . A sheet coupling portion 32 d of the optical sheet 32 a , 32 b may be hung on the protruding portion 80 aad.

Referring to FIG. 8 and FIG. 22 , an upper engaging hole 80 aah may be formed through the upper bending portion 80 aa in the up-and-down direction. For example, a portion of the upper engaging hole 80 aah may be formed through the upper support portion 813 a in the left-and-right direction. As another example, the upper engaging hole 80 aah may be offset from the upper support portion 813 a . The upper engaging hole 80 aah may be elongated horizontally.

For example, the upper engaging hole 80 aah may be located at each of two points tp 1 of the upper bending portion 80 aa . The upper engaging hole 80 aah located at one of the two points tp 1 may be adjacent to the second upper holder 91 b (see FIG. 7 ). The upper engaging hole 80 aah located at the other of the two points tp 2 may be adjacent to the fourth upper holder 91 d (see FIG. 7 ).

Referring to FIG. 13 and FIG. 22 , a right engaging hole 80 ddh may be formed through the right bending portion 80 dd in the left-and-right direction. For example, a portion of the right engaging hole 80 ddh may be formed through the right support portion 813 d in the front-and-rear direction. As another example, the right engaging hole 80 ddh may be offset from the right support portion 813 d . The right engaging hole 80 ddh may be elongated vertically.

For example, the right engaging hole 80 ddh may be located at one point, namely, a point tp 2 of the right bending portion 80 dd . The right engaging hole 80 ddh located at the point tp 2 may be adjacent to the first right holder 93 a.

A left engaging hole (not shown) and the right engaging hole 80 ddh may be left-right symmetric with respect to a vertical line passing through the center of the frame 80 . That is, the left engaging hole may be formed through the left bending portion 80 cc (see FIG. 16 ) in the left-and-right direction. For example, the left engaging hole may be located at one point, namely, a point tp 3 , and may be adjacent to the first left holder 92 a (see FIG. 7 ).

Referring to FIGS. 21 and 22 , a lower engaging protrusion 80 f may protrude downward from the lower bending portion 80 bb . For example, the lower engaging protrusion 80 f may be formed by being pressed downward from an upper surface of the lower bending portion 80 bb . A plurality of lower engaging protrusions 80 f may be spaced apart from each other along the lower bending portion 80 bb (see tp 4 ).

Referring back to FIG. 22 , a guide panel 20 may include a first part 21 , a second part 22 , a third part 23 , and a fourth part 24 . The guide panel 20 may be referred to as a side frame.

The first part 21 may be elongated horizontally. The third part 23 may be bent downward at a left end of the first part 21 and may be elongated vertically. The second part 22 may be bent rightward at a lower end of the third part 23 and may be elongated horizontally. The fourth part 24 may be bent upward at a right end of the second part 22 and may be elongated vertically. An upper end of the fourth part 24 may be connected to a right end of the first part 21 . The guide panel 20 may be detachably coupled to the frame 80 at a plurality of points tp 1 , tp 2 , tp 3 , and tp 4 .

Referring to FIG. 23 , an upper engaging protrusion 21 Va may be formed on an inner surface of a first vertical portion 21 V of the first part 21 . The upper engaging protrusion 21 Va may be engaged in the upper engaging hole 80 aah . For example, the coupling structure between the upper engaging protrusion 21 Va and the upper engaging hole 80 aah may be achieved at a plurality of points tp 1 (see FIG. 22 ). Accordingly, the upper engaging protrusion 21 Va and the upper engaging hole 80 aah may guide the coupling of the first part 21 and the frame 80 , and the first part 21 may be detachably coupled to the frame 80 .

Referring to FIG. 24 , a right engaging protrusion 24 Va may be formed on an inner surface of a fourth vertical portion 24 V of the fourth part 24 . The right engaging protrusion 24 Va may be engaged in the right engaging hole 80 ddh . For example, the coupling structure between the right engaging protrusion 24 Va and the right engaging hole 80 ddh may be achieved at least at one point tp 2 . Accordingly, the right engaging protrusion 24 Va and the right engaging hole 80 ddh may guide the coupling of the fourth part 24 and the frame 80 , and the fourth part 24 may be detachably coupled to the frame 80 .

A left engaging protrusion (not shown) and the right engaging protrusion 24 Va may be left-right symmetric with respect to a vertical line passing through the center of the frame 80 . That is, the left engaging protrusion may be formed on an inner surface of a third vertical portion of the third part 23 . The left engaging protrusion may be detachably coupled to the left engaging hole. The left engaging protrusion and the left engaging hole may guide the coupling of the third part 23 and the frame 80 , and the third part 23 may be detachably coupled to the frame 80 .

Referring to FIG. 25 , a lower engaging hole 22 Vh may be formed through a vertical portion 22 V of the second part 22 in the up-and-down direction. The lower engaging protrusion 80 f may be engaged in the lower engaging hole 22 Vh. For example, the coupling structure between the lower engaging protrusion 80 f and the lower engaging hole 22 Vh may be achieved at a plurality of points tp 4 (see FIG. 22 ). Accordingly, the lower engaging protrusion 80 f and the lower engaging hole 22 Vh may guide the coupling of the second part 22 and the frame 80 , and the second part 22 may be detachably coupled to the frame 80 .

Referring to FIG. 26 , the first part 21 may extend along an upper side of the display panel 10 , and may cover the top of the display panel 10 and the frame 80 . The first part 21 may include a first vertical portion 21 V and a first horizontal portion 21 H.

A first groove 21 g may be formed from a rear surface of the first vertical portion 21 V toward an inside of the first vertical portion 21 V, so as to allow the upper bending portion 80 aa of the frame 80 to be inserted therein.

A first front pad FP 1 may be positioned between the display panel 10 and the first horizontal portion 21 H, and may be coupled to a front surface of the first horizontal portion 21 H. A first rear pad RP 1 may be positioned between the first horizontal portion 21 H and the optical sheet 32 , and may be coupled to a rear surface of the first horizontal portion 21 H.

The first side portion 71 may extend along an upper side of the heat sink 83 , and may be disposed obliquely toward the display panel 10 . The first side portion 71 may include a first seating portion 711 and a first engaging portion 712 .

The first seating portion 711 may be bent upward at a front end of the first side portion 71 , and may be positioned between the first horizontal portion 21 H and the upper support portion 813 a . A portion of the diffusion plate 31 may be positioned between the first horizontal portion 21 H and the first seating portion 711 , and may press the first seating portion 711 toward the upper support portion 813 a.

The first engaging portion 712 may be bent downward at a rear end of the first side portion 71 , and may be positioned between the heat sink 83 and the pressed portion 811 . The first engaging portion 712 may be engaged with a rear surface of the heat sink 83 .

Referring to FIG. 27 , the second part 22 of the side frame 20 may extend along a lower side of the frame 80 , and may cover the bottom of the frame 80 . The second part 22 may be positioned between the lower side of the frame 80 and an under cover 29 . The second part 22 may include a second vertical portion 22 V and a second horizontal portion 22 H.

The lower bending portion 80 bb of the frame 80 may be positioned on the second vertical portion 22 V.

A second front pad FP 2 may be positioned between the display panel 10 and the second horizontal portion 22 H, and may be coupled to a front surface of the second horizontal portion 22 H. A second rear pad RP 2 may be positioned between the second horizontal portion 22 H and the optical sheet 32 , and may be coupled to a rear surface of the second horizontal portion 22 H.

The second side portion 72 may extend along a lower side of the heat sink 83 , and may be disposed obliquely toward the display panel 10 . The second side portion 72 may include a second seating portion 721 and a second engaging portion 722 .

The second seating portion 721 may be bent downward at a front end of the second side portion 72 , and may be positioned between the second horizontal portion 22 H and the lower support portion 813 b . A portion of the diffusion plate 31 may be positioned between the second horizontal portion 22 H and the second seating portion 721 , and may press the second seating portion 721 toward the lower support portion 813 b.

The second engaging portion 722 may be bent upward at a rear end of the second side portion 72 , and may be positioned between the heat sink 83 and the pressed portion 811 . The second engaging portion 722 may be engaged with the rear surface of the heat sink 83 .

Referring to FIG. 28 , the third part 23 of the side frame 20 may extend along a left side of the display panel 10 , and may cover the left side of the display panel 10 and the frame 80 . The third part 23 may include a third vertical portion 23 V and a third horizontal portion 23 H.

A third groove 23 g may be formed from a rear surface of the third vertical portion 23 V toward an inside of the third vertical portion 23 V, so as to allow the left bending portion 80 cc of the frame 80 to be inserted therein.

A third front pad FP 3 may be positioned between the display panel 10 and the third horizontal portion 23 H, and may be coupled to a front surface of the third horizontal portion 23 H. A third rear pad RP 3 may be positioned between the display panel 10 and the optical sheet 32 , and may be coupled to a rear surface of the third horizontal portion 23 H.

The third side portion 73 may extend along a left side of the heat sink 83 , and may be disposed obliquely toward the display panel 10 . The third side portion 73 may include a third seating portion 731 and a third engaging portion 732 .

The third seating portion 731 may be bent leftward at a front end of the third side portion 73 , and may be positioned between the third horizontal portion 23 H and the left support portion 813 c . A portion of the diffusion plate 31 may be positioned between the third horizontal portion 23 H and the third seating portion 731 , and may press the third seating portion 731 toward the left support portion 813 c.

The third engaging portion 732 may be bent rightward at a rear end of the third side portion 73 , and may be positioned between the heat sink 83 and the pressed portion 811 . The third engaging portion 732 may be engaged with the rear surface of the heat sink 83 .

Referring to FIG. 29 , the fourth part 24 of the side frame 20 may extend along a right side of the display panel 10 , and may cover the right side of the display panel 10 and the frame 80 . The fourth part 24 may include a fourth vertical portion 24 V and a fourth horizontal portion 24 H.

A fourth groove 24 g may be formed from a rear surface of the fourth vertical portion 24 V toward an inside of the fourth vertical portion 24 V, so as to allow the right bending portion 80 dd of the frame 80 to be inserted therein.

A fourth front pad FP 4 may be positioned between the display panel 10 and the fourth horizontal portion 24 H, and may be coupled to a front surface of the fourth horizontal portion 24 H. A fourth rear pad RP 4 may be positioned between the display panel 10 and the optical sheet 32 , and may be coupled to a rear surface of the fourth horizontal portion 24 H.

The fourth side portion 74 may extend along a right side of the heat sink 83 , and may be disposed obliquely toward the display panel 10 . The fourth side portion 74 may include a fourth seating portion 741 and a fourth engaging portion 742 .

The fourth seating portion 741 may be bent rightward at a front end of the fourth side portion 74 , and may be positioned between the fourth horizontal portion 24 H and the right support portion 813 d . A portion of the diffusion plate 31 may be positioned between the fourth horizontal portion 24 H and the fourth seating portion 741 , and may press the fourth seating portion 741 toward the right support portion 813 d.

The fourth engaging portion 742 may be bent leftward at a rear end of the fourth side portion 74 , and may be positioned between the heat sink 83 and the pressed portion 811 . The fourth engaging portion 742 may be engaged with the rear surface of the heat sink 83 .

Referring to FIGS. 1 to 29 , a display device according to an aspect of the present disclosure may include: a display panel; a frame positioned behind the display panel; a light source providing light to the display panel; an optical plate positioned between the display panel and the light source; a frame which is opposite to the display panel with respect to the optical plate and on which the optical plate is seated; and a holder adjacent to one side of the optical plate and coupled onto the frame, the holder may include: a plurality of protrusions formed at one surface of the holder that faces the one side of the optical plate; and a coupling portion protruding from the holder toward the frame, passing through the frame, and engaged with a rear surface of the frame.

One side of the frame may face the one side of the optical plate, and a gap may be formed between the one side of the frame and the one side of the optical plate.

The frame may include a hole formed through the frame in a front-rear direction and having an oval shape, the coupling portion may include: a neck protruding rearward from the holder and passing through the hole; and a head connected to the neck, having a diameter greater than a diameter of the hole, and made of an elastic material.

The holder may be elongated along one side of the frame, the coupling portion may include a pair of coupling portions spaced apart from each other in a longitudinal direction of the holder, and the hole may include a pair of holes aligned with the pair of coupling portions, respectively.

The frame may include: a flat portion facing the optical plate; an inclined portion bent obliquely forward from an edge of the flat portion; and a support portion bent from the inclined portion in a direction parallel to the optical plate and on which the optical plate is seated, and the coupling portion of the holder may pass through the support portion and may be engaged with a rear surface of the support portion.

The frame may further include a bending portion bent forward from the support portion, and the other surface of the holder opposite to the one surface of the holder may contact an inner surface of the bending portion.

The holder may include: a plurality of upper holders adjacent to an upper side of the optical plate, and spaced apart from each other along the upper side; a plurality of right holders adjacent to a right side of the optical plate, and spaced apart from each other along the right side; and a plurality of left holders adjacent to a left side of the optical plate, and spaced apart from each other along the left side.

The frame may include a plurality of support portions which protrude forward from a lower side of the frame, which are adjacent to a lower side of the optical plate, and which are spaced apart from each other along the lower side.

The frame may include an insertion portion formed by being recessed downward from an upper side of the frame, and forming a step with respect to a front end of the upper side of the frame, wherein each of the plurality of upper holders may include: an upper body which is elongated along the upper side of the optical plate, and to which the plurality of protrusions and the coupling portion are formed; a middle part formed at a central portion of the upper body; and an insertion groove positioned between the upper body and the middle part, and formed along the insertion portion, and the middle part may be seated on the insertion portion when the insertion portion is inserted into the insertion groove.

One end of the middle part may be adjacent to one end of the upper body, may protrude upward from an upper surface of the upper body, and may be positioned at the step between the upper side of the frame and the insertion portion, and the other end of the middle part may be adjacent to the other end of the upper body, may protrude upward from the upper surface of the upper body, and may be positioned at the step between the upper side of the frame and the insertion portion.

The display device may further include an optical sheet positioned at a front of the optical plate, the optical sheet may include a sheet coupling portion protruding upward from an upper side of the optical sheet, the frame may further include a protruding portion protruding forward from a front end of the insertion portion, positioned under the middle part, and to which the sheet coupling portion is coupled.

The display device may further include: a guide panel covering an edge of the frame, the frame may include an engaging hole formed through one side of the frame, the guide panel may include an engaging protrusion formed at an inner surface of the guide panel and detachably engaged in the engaging hole, and the holder may contact an inner surface of a portion of the frame forming the one side of the frame.

The display device may further include a guide panel extending along an edge of the frame, the frame may include an engaging protrusion protruding outward from one side of the frame, the guide panel may include an engaging hole formed through the guide panel and in which the engaging protrusion is detachably engaged, and the holder may contact an inner surface of a portion of the frame forming the one side of the frame.

The display device may further include a guide panel extending along an edge of the display panel, and coupled to the display panel and the frame between the display panel and the frame, the frame may include a bending portion forming an end of the frame and inserted inside the guide panel, and the holder may contact an inner surface of the bending portion. The optical plate may be a diffusion plate or a light guide plate.

Certain embodiments or other embodiments of the disclosure described above are not mutually exclusive or distinct from each other. Any or all elements of the embodiments of the disclosure described above may be combined or combined with each other in configuration or function.

For example, a configuration “A” described in one embodiment of the disclosure and the drawings, and a configuration “B” described in another embodiment of the disclosure and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible except in the case where it is described that the combination is impossible.

The above detailed description is to be construed in all aspects as illustrative and not restrictive. The scope of the present disclosure should be determined by reasonable interpretation of the appended claims, and all changes coming within the equivalency range of the present disclosure are intended to be embraced in the scope of the present disclosure.