Backlight unit having a bent substrate and display device including the same

Patent metadata

Field	Value
Publication number	US-9851495-B2
Application number	US-201514980734-A
Country	US
Kind code	B2
Filing date	Dec 28, 2015
Priority date	Dec 31, 2014
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

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 panel;
a bottom cover disposed at a rear of the panel, the bottom cover having a planar surface and a sidewall bent from the planar surface;
a substrate including a first surface disposed on the side wall and a second surface bent from the first surface;
a light assembly disposed on the first surface; and
a plurality of leads electrically connected to the light assembly and disposed at the first surface and the second surface of the substrate,
wherein the bottom cover includes a ribbed portion that protrudes toward the panel, and the ribbed portion includes a protruded surface, and
wherein the second surface is between the planar surface and the protruded surface.

2. The display device of claim 1 , wherein the side wall includes a plurality of side walls which are separately disposed along the corner area, a corner area, and
wherein the corner area is formed by the planar surface and the side wall, and the corner area being formed to extend along one side of the bottom cover.

3. The display device of claim 2 , wherein separation gaps between at least two of the plurality of side walls are different than separation gaps between another at least two of the plurality of side walls.

4. 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.

5. The display device of claim 3 , 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.

6. The display device of claim 3 , 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.

7. The display device of claim 1 , wherein the ribbed portion protrudes in a direction of the backlight unit from the bottom cover and extends along a front surface of the bottom cover.

8. The display device of claim 1 , 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.

9. The display device of claim 3 , wherein in the ribbed portion, an opening is provided to accommodate a connector area provided at the second surface of the substrate, and
wherein the connector area is exposed to a backward of the bottom cover.

10. The display device of claim 1 , further comprising an adhesive layer provided between the substrate and the bottom cover.

11. The display device of claim 1 , wherein the bottom cover 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 bottom cover and configured to be inserted into a coupling hole formed in the substrate.

12. The display device of claim 11 , 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.

13. The display device of claim 12 , 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.

14. 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.

15. The display device of claim 1 , wherein the bottom cover includes a coupler disposed in an end portion of the side wall, and the coupler is formed by bending the side wall.

Assignees

• Lg Electronics Inc

Inventors

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

Classifications

• G02B6/0055

  Reflecting element, sheet or layer · CPC title

• G02B6/009

  of the light source in the package (G02B6/0021 takes precedence) · CPC title

• G02F2001/133314

  Physics · mapped topic

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G02F1/133308

  Support structures for LCD panels, e.g. frames or bezels · CPC title