There is provided a thin transformer capable of being used in a thin display device such as a liquid crystal display (LCD) device and a light emitting diode (LED) display device. The transformer includes: a bobbin part including a plurality of bobbins, each including a pipe shaped body part having a though-hole formed in an inner portion thereof, a flange part vertically protruding outwardly from both ends of the body part, and external connection terminals protruding from one side of a lower flange part formed at a lower end of the body part; a core inserted into the through-hole of the bobbin to thereby form a magnetic path; and a coil part including coils each wound around the plurality of bobbins, wherein the bobbin part includes an inner bobbin and an outer bobbin, and the inner bobbin is coupled to the outer bobbin such that the external connection terminals of the inner bobbin and the external connection terminals of the outer bobbin are opposed to each other.

Claims

6 · 1 independent · depth 2

6 granted claims

›1.independentA transformer, comprising:na bobbin part including a plurality of bobbins, each including a pipe shaped body part having a though-hole formed in an in…+5

›2.↳ 1The transformer of claim 1, wherein the inner bobbin is disposed in the through-hole of the outer bobbin to thereby be coupled thereto such that the f…d2

›3.↳ 1The transformer of claim 1, wherein at least one of the plurality of bobbins includes the flange part having a width larger than a thickness of the bo…d2

›4.↳ 1The transformer of claim 1, wherein each of the terminal connection parts respectively included in the inner and outer bobbins includes a lead groove …d2

›5.↳ 1The transformer of claim 1, wherein the coil part includes a primary coil wound around the inner bobbin and a secondary coil wound around the outer bo…d2

›6.↳ 1The transformer of claim 1, wherein the external connection terminals of the inner bobbin protrude from the terminal connection part of the inner bobb…d2

Classifications

2 codes

IPC · International Patent Classification

Section H — Electricity

H01F27/29

USPC · US Patent Classification

336/192

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Pendency

2.3 y

851 days filing → grant

Office actions

non-final + final

Responses

2 RCE

Examiner

Tuyen Nguyen

art unit 2832 · TC 2800

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20120001717 A1	5 Jan 2012

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