Pixel and organic light emitting display using the same

A pixel comprising:nan organic light emitting diode (OLED) having a cathode electrode coupled to a second power source, and an anode electrode;a storage capacitor coupled between a data line and a first node;a second transistor having a first electrode coupled to a first power source, a second electrode coupled to the anode electrode of the OLED, and a gate electrode directly coupled to the first node;a first transistor having a first electrode directly coupled to the first node, a second electrode directly coupled to the second electrode of the second transistor, and a gate electrode coupled to a current scan line; anda third transistor having a first electrode directly coupled to the second electrode of the second transistor, a second electrode directly coupled to the anode electrode of the OLED, and a gate electrode coupled to a control line,wherein the control line is commonly coupled to an adjacent pixel in a same column as the pixel and to another adjacent pixel in a same row as the pixel, such that the pixel, the adjacent pixel, and the another adjacent pixel receive a control signal through the control line at a same time, andwherein a threshold voltage of the OLED is set to be higher than a threshold voltage of the second transistor.

A pixel comprising:nan organic light emitting diode (OLED) having a cathode electrode coupled to a second power source, and an anode electrode;a storage capacitor coupled between a data line and a first node;a second transistor having a first electrode coupled to a first power source, a second electrode directly coupled to the anode electrode of the OLED, and a gate electrode directly coupled to the first node;a first transistor having a first electrode directly coupled to the first node, a second electrode directly coupled to the second electrode of the second transistor, and a gate electrode coupled to a current scan line; anda third transistor coupled between the second electrode of the second transistor and an initialization power source, a gate electrode of the third transistor being coupled to a control line,wherein the control line is commonly coupled to an adjacent pixel in a same column as the pixel and to another adjacent pixel in a same row as the pixel, such that the pixel, the adjacent pixel, and the another adjacent pixel receive a control signal through the control line at a same time; andwherein a threshold voltage of the OLED is set to be higher than a threshold voltage of the second transistor.

An organic light emitting display comprising:npixels positioned at crossing regions of scan lines, data lines, and control lines wherein the pixels are arranged in three or more rows and three or more columns;a scan driver for concurrently supplying scan signals to the scan lines in a first period of a frame period and for sequentially supplying the scan signals to the scan lines in a second period of the frame period;a data driver for driving the data lines;a control line driver for supplying a control signal to a control line commonly coupled to the pixels in a partial period of the first period, such that adjacent pixels of the pixels in a same column and other adjacent pixels of the pixels in a same row receive the control signal through the control line at a same time in the partial period;a first power source driver for supplying a first power source to the pixels; anda second power source driver for supplying a second power source to the pixels,wherein at least one of the first power source or the second power source is at a voltage that changes repeatedly between a first voltage and a second voltage lower than the first voltage in the frame period.

An organic light emitting display comprising:npixels positioned at crossing regions of scan lines, data lines, and a control line commonly coupled to the pixels;a scan driver for sequentially supplying scan signals to the scan lines in a first period of a frame period;a data driver for supplying data signals to the data lines in synchronization with the scan signals; anda control driver for supplying a control signal to the control line in a second period of the frame period excluding the first period such that adjacent pixels of the pixels in a same column and other adjacent pixels of the pixels in a same row receive the control signal through the control line at the same time in the second period,wherein each of the pixels comprises:nan organic light emitting diode (OLED) having a cathode electrode coupled to a second power source, and an anode electrode;a storage capacitor coupled between a data line of the data lines and a first node;a second transistor having a first electrode coupled to a first power source, a second electrode coupled to the anode electrode of the OLED, and a gate electrode directly coupled to the first node;a first transistor having a first electrode directly coupled to the first node and a second electrode directly coupled to the second electrode of the second transistor, and configured to be turned on when the scan signals are supplied to the scan lines;a third transistor having a first electrode directly coupled to the second electrode of the second transistor and a second electrode directly coupled to the anode electrode of the OLED, and configured to be turned on when the control signal is supplied to the control line; anda fourth transistor coupled between the first node and an initialization power source, and configured to be turned on when a scan signal of the scan signals is supplied to a previous scan line of the scan lines, andwherein a threshold voltage of the OLED is set to be higher than a threshold voltage of the second transistor.