Backlight unit of display apparatus and display apparatus

Patent metadata

Field	Value
Publication number	US-10041653-B2
Application number	US-201514976145-A
Country	US
Kind code	B2
Filing date	Dec 21, 2015
Priority date	Jul 6, 2015
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A backlight unit for a display apparatus is disclosed. For example, the backlight unit including an integrated support for a display apparatus is disclosed. A disclosed example provides the backlight unit for a display apparatus including the integrated support which enables a thin display apparatus using the backlight unit including the integrated support.

First claim

What is claimed is:

1. A backlight unit comprising:
a bottom chassis;
a printed circuit board including a plurality of light sources mounted thereon, the printed circuit board being disposed on the bottom chassis;
a first reflecting sheet disposed on the printed circuit board and configured to reflect light radiated from the light sources;
an integrated support including a sheet portion and a plurality of support structures, the plurality of support structures protruding from the sheet portion and being configured to support a diffusion plate; and
a second reflecting sheet disposed on the integrated support,
wherein at least a portion of the sheet portion of the integrated support is disposed between the first and second reflecting sheets.

2. The backlight unit of claim 1 , further comprising:
an optical sheet disposed on the diffusion plate; and
a middle holder frame configured to support the first reflecting sheet, the integrated support, and the second reflecting sheet.

3. The backlight unit of claim 1 , wherein the light sources protrude through first openings in the first reflecting sheet, the first openings arranged to accommodate the light sources, first openings of the integrated support arranged to accommodate the light sources, and first openings of the second reflecting sheet arranged to accommodate the light sources and to radiate light to the diffusion plate.

4. The backlight unit of claim 1 , wherein the second reflecting sheet includes second openings arranged to accommodate the support structures of the integrated support.

5. The backlight unit of claim 1 , wherein the support structures of the integrated support are arranged at a predetermined interval.

6. The backlight unit of claim 1 , wherein a cross-section of the support structures of the integrated support includes one of: a polygon, an ellipse, and a semicircle.

7. The backlight unit of claim 1 , wherein the light sources further comprise lenses, and a height of the support structures of the integrated support is greater than a height of the light source including the lens.

8. The backlight unit of claim 1 , wherein the first reflecting sheet and the integrated support are integrally formed into a reflecting-sheet-integrated support, and the reflecting-sheet-integrated support is configured to reflect the light and supports the diffusion plate.

9. The backlight unit of claim 1 , wherein the integrated support is formed using at least one of vacuum forming and air pressure forming.

10. A display apparatus comprising:
a display panel configured to display content;
a middle frame configured to support the display panel;
a top chassis;
a bottom chassis coupled to the top chassis;
a printed circuit board on which a plurality of light sources are mounted the printed circuit board being disposed on the bottom chassis;
a first reflecting sheet disposed on the printed circuit board and configured to reflect light radiated from the light sources;
an integrated support including a sheet portion and a plurality of support structures, the plurality of support structures extending from the sheet portion and being configured to support a diffusion plate;
an optical sheet disposed on the diffusion plate;
a middle holder frame configured to support the first reflecting sheet and the integrated support; and
a second reflecting sheet,
wherein at least a portion of the sheet portion of the integrated support is disposed between the first and second reflecting sheets.

11. A backlight unit comprising:
a bottom chassis;
a first reflecting sheet disposed on the bottom chassis;
an integrated support disposed on the first reflecting sheet and including a sheet portion and a plurality of support structures, the plurality of support structures extending from the sheet portion and being configured to support a diffusion plate
a printed circuit board on which light sources are mounted, the printed circuit board being disposed on the integrated support and including openings arranged to accommodate the plurality of support structures; and
a second reflecting sheet disposed on the printed circuit board and configured to reflect light radiated from the light sources,
wherein at least a portion of the sheet portion of the integrated support is disposed between the first and second reflecting sheets.

12. The backlight unit of claim 11 , further comprising:
an optical sheet disposed on the diffusion plate; and
a middle holder frame configured to support the first reflecting sheet, the integrated support, and the second reflecting sheet.

13. The backlight unit of claim 11 , wherein the light sources protrude through first openings of the second reflecting sheet and are configured radiate light to the diffusion plate.

14. The backlight unit of claim 11 , wherein the second reflecting sheet includes second openings arranged to accommodate the support structures of the integrated support.

15. The backlight unit of claim 11 , wherein the support structures of the integrated support are arranged at a predetermined interval.

16. The backlight unit of claim 11 , wherein the light sources further include lenses, and a height of the support structures of the integrated support is greater than a height of the light source including the lens.

17. The backlight unit of claim 11 , wherein a cross-section of the support structures of the integrated support includes one of a polygon, an ellipse, and a semicircle.

18. The backlight unit of claim 11 , wherein the first reflecting sheet and the integrated support are integrally formed into a reflecting-sheet-integrated support, and the reflecting-sheet-integrated support is configured to reflect the light, wherein the plurality of support structures of the reflecting-sheet-integrated support protrude through the openings of the printed circuit board, and support the diffusion plate.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Ahn Joon Seok
• Yoo Jun-Mo

Classifications

• F21V15/01 Primary

  Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04}) · CPC title

• F21V7/0066

  specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified (F21V7/16 - F21V7/30 take precedence) · CPC title

• G02F1/133603 Primary

  with LEDs · CPC title

• F21Y2101/00

  Point-like light sources · CPC title

• G02F1/133608

  including particular frames or supporting means · CPC title