Backlight unit and display device including the same

Patent metadata

Field	Value
Publication number	US-2016187573-A1
Application number	US-201514980734-A
Country	US
Kind code	A1
Filing date	Dec 28, 2015
Priority date	Dec 31, 2014
Publication date	Jun 30, 2016
Grant date	—

Abstract

A backlight unit and a display device including the same are provided. The display device includes: a bottom cover; a backlight unit in which a light assembly is disposed in at least one corner area of the bottom cover; and a light arriving portion formed by bending at least one corner area of the bottom cover, wherein the backlight unit includes: a substrate coupled to the light arriving portion and in which a first surface in which the light assembly is disposed and a second surface bent from the first surface are provided, and at the first and second surfaces, a plurality of leads connected to the light assembly are disposed.

First claim

What is claimed is:

1 . A display device, comprising:
a bottom cover; and a backlight unit having a light assembly that is disposed in at least one corner area of the bottom cover, wherein the bottom cover includes a backlight unit receiving portion disposed in the at least one corner area of the bottom cover, the corner area being formed by bending an edge portion of the bottom cover to form the backlight unit receiving portion, wherein the backlight unit includes a substrate coupled to the backlight unit receiving portion and having a first surface at which the light assembly is disposed and a second surface bent from the first surface, and a plurality of leads connected to the light assembly and disposed at the first and second surfaces of the substrate.

2 . The display device of claim 1 , wherein the backlight unit receiving portion includes
a planar surface that is parallel to a planar area of the bottom cover, and at least one flange that is bent from the planar surface.

3 . The display device of claim 2 , wherein the at least one flange includes a plurality of flanges which are separately disposed along the corner area, the corner area being formed to extend along one side of the bottom cover.

4 . The display device of claim 3 , wherein separation gaps between at least two of the plurality of flanges are different than separation gaps between another at least two of the plurality of flanges.

5 . The display device of claim 1 , wherein the second surface of the substrate includes at least one connector area having a prescribed shape to provide external connection for the plurality of leads.

6 . The display device of claim 5 , wherein one or more of the at least the connector area is located near a corner of the second surface of the substrate and is parallel to the second surface of the substrate.

7 . The display device of claim 5 , wherein one or more electronic elements are mounted on the second surface of the substrate, in an area that does not overlap the plurality of leads.

8 . The display device of claim 1 , wherein the bottom cover includes at least one ribbed portion that protrudes in a direction of the backlight unit from the bottom cover and extends along a front surface of the bottom cover.

9 . The display device of claim 8 , further comprising an optical layer including a reflection sheet and a light guide plate provided on the reflection sheet,
wherein the reflection sheet contacts the ribbed portion.

10 . The display device of claim 8 , wherein in the ribbed portion, an opening is provided to accommodate a connector area provided at the second surface of the substrate.

11 . The display device of claim 1 , further comprising an adhesive layer provided between the substrate and the backlight unit receiving portion.

12 . The display device of claim 1 , wherein the backlight unit receiving portion includes at least one coupling protrusion that extends in a direction of at least one of the first or second surfaces of the substrate from the backlight unit receiving portion and configured to be inserted into a coupling hole formed in the substrate.

13 . The display device of claim 12 , further comprising an optical layer provided at a front surface of the bottom cover,
wherein one or more of the at least one coupling protrusion is coupled to the optical layer by penetrating at least one of the first and second surfaces of the substrate.

14 . The display device of claim 13 , wherein the optical layer includes
a reflection sheet; and a light guide plate provided at a front surface of the reflection sheet, wherein, in at least one of the reflection sheet or the light guide plate, a coupling hole is formed to receive the at least one coupling protrusion.

15 . The display device of claim 1 , further comprising an optical layer provided at a front surface of the bottom cover,
wherein, in one corner area of the bottom cover, at least one coupling protrusion is provided to protrude in a direction of the optical layer from the bottom cover to be coupled to the optical layer.

16 . A backlight unit, comprising:
a substrate disposed in at least one corner area of a bottom cover; a light assembly disposed on the substrate; and an optical layer provided at a front surface of the bottom cover, wherein the substrate is coupled to a backlight unit receiving portion provided in the at least one corner area and comprises a first surface at which the light assembly is disposed and a second surface bent from the first surface, and wherein a plurality of leads are disposed at the first and second surfaces of the substrate and connected to the light assembly.

17 . The backlight unit of claim 16 , wherein the second surface includes at least one connector area, the plurality of leads extending from the light source mounted on the first surface to the at least one connector area on the second surface.

18 . The backlight unit of claim 16 , further comprising an adhesive layer provided between at least one surface of the first and second surfaces and the backlight unit receiving portion.

19 . The backlight unit of claim 16 , wherein the optical layer includes
a reflection sheet; and a light guide plate located at a front surface of the reflection sheet, wherein, in at least one of the reflection sheet or the light guide plate, at least one coupling hole is formed to receive at least one coupling protrusion that extends from the bottom cover.

20 . The backlight unit of claim 19 , wherein the at least one coupling hole is disposed in a corner area of the reflection sheet and the light guide plate.

Assignees

• Lg Electronics Inc

Inventors

• Kim Jaehyeok
• Kee Wondo
• Hwang Woongjoon
• Lee Jeoungoun
• Park Dohan

Classifications

• G02B6/0088 Primary

  of the light guide or other optical sheets in the package · CPC title

• G02B6/0055

  Reflecting element, sheet or layer · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/133314

  Back frames · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title