Display device with backlight unit

Patent metadata

Field	Value
Publication number	US-10379401-B2
Application number	US-201715797292-A
Country	US
Kind code	B2
Filing date	Oct 30, 2017
Priority date	Nov 18, 2016
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

A display device includes a display panel, a bottom chassis supporting the rear of the display panel, a light source disposed on at least one side of the bottom chassis, a reflective member disposed between the display panel and the bottom chassis and having a reflective surface for reflecting light emitted from the light source to the display panel, and a reflective holder for fixing one end of the reflective member, the reflective holder reflecting light directed toward the reflective holder to the display panel.

First claim

What is claimed is:

1. A display device comprising:
a display panel;
a bottom chassis supporting the display panel;
a light source provided on at least one side of the bottom chassis;
a reflective member provided between the display panel and the bottom chassis and comprising a reflective surface configured to reflect light emitted from the light source to the display panel; and
a reflective holder configured to fix one end of the reflective member and to reflect light emitted from the light source toward the reflective holder to the display panel,
wherein the light source is disposed to face the reflective surface on a first edge of the reflective member.

2. The display device of claim 1 , wherein the reflective holder comprises a holder reflective surface extending from the reflective surface.

3. The display device of claim 2 , wherein an inclination of the holder reflective surface is different from an inclination of the reflective surface adjacent to the reflective holder.

4. The display device of claim 2 , wherein the reflective holder further comprises a holder body having an insertion space into which at least a part of the reflective member is inserted.

5. The display device of claim 4 , wherein the reflective member comprises a member insertion portion inserted into the insertion space, and
the holder reflective surface is disposed closer to the display panel than the member insertion portion.

6. The display device of claim 4 , wherein the holder body comprises:
an upper holder body on which the holder reflective surface is provided; and
a lower holder body in contact with the bottom chassis, the lower holder body and the upper holder body together forming the insertion space, and
wherein the reflective member is configured to be spaced apart from the bottom chassis.

7. The display device of claim 5 , wherein a width of the holder reflective surface is greater than a width of the member insertion portion.

8. The display device of claim 4 , wherein the reflective member has a concave shape, and
the reflective holder is disposed on a second edge of the reflective member.

9. The display device of claim 4 , wherein the holder reflective surface opposite to the display panel and is disposed to be inclined at an angle in a direction toward the light source greater than an angle at which the reflective surface is inclined.

10. The display device of claim 1 , wherein the reflective member comprises:
a first reflective member fixed by the reflective holder and configured to diffuse light emitted from the light source toward the display panel; and
a second reflective member disposed between the light source and the first reflective member and configured to reflect the light emitted from the light source toward the first reflective member.

11. The display device of claim 1 , wherein the bottom chassis comprises:
a chassis body configured to support the reflective member, the chassis body being at least partially curved;
a reflective space formed between the display panel and the reflective member, the reflective space through which the light emitted from the light source and the light reflected by the reflective member pass; and
a chassis flange protruding from the chassis body towards the display panel and configured to form the reflective space with the chassis body, and
wherein the reflective holder is disposed along an inner surface of the chassis flange.

12. The display device of claim 11 , wherein the chassis flange comprises a first chassis flange on which the reflective holder is disposed, and a pair of second chassis flanges extending from opposite ends of the first chassis flange, and
the display device further comprises a flange reflective member disposed on an inner surface of the second chassis flange and extending a length of the reflective surface.

13. The display device according to claim 1 , wherein the reflective holder comprises a synthetic resin.

14. The display device of claim 2 , wherein the holder reflective surface is formed in an achromatic color.

15. The display device of claim 4 , wherein the holder body comprises:
a first holder body on which the holder reflective surface is formed; and
a second holder body fixed to the bottom chassis, and
wherein the reflective holder comprises a pressing projection protruding from the second holder body into the insertion space and configured to secure the reflective member inserted into the insertion space.

16. A display device comprising:
a display panel;
a bottom chassis supporting the display panel;
a light source disposed in the bottom chassis;
a reflective member comprising:
a first reflective member opposite to the display panel and comprising a reflective surface having a concave shape and configured to diffuse light emitted from the light source toward the display panel, and
a second reflecting member disposed between the light source and the first reflecting member and configured to reflect light emitted from the light source toward the first reflecting member; and

a reflective holder comprising a holder reflective surface extending from a reflective surface of the first reflective member to reflect light to the display panel and configured to fix the first reflective member to the bottom chassis,
wherein the light source is disposed opposite to the first and second reflective members at a first edge of the reflective member.

17. The display device of claim 16 ,
wherein the reflective holder is disposed on a second edge of the reflective member such that the holder reflective surface is opposite to the display panel and is inclined toward one of the light source or the reflective member.

18. The display device of claim 16 , wherein the reflective holder comprises a holder body having an insertion space and on which the holder reflective surface is provided,
the reflective member comprising a member insertion portion inserted into the insertion space.

19. The display device of claim 18 , wherein a width of the holder reflective surface is greater than a width of the member insertion portion.

20. A display device comprising:
a display panel;
a bottom chassis supporting the display panel;
a light source provided on a side of the bottom chassis;
a reflective member provided between the bottom chassis and the display panel, and comprising a reflective surface opposite to the display panel, the reflective surface configured to reflect light emitted from the light source to the display panel; and
a reflective holder comprising an insertion space and configured to receive a member insertion portion formed at one edge of the reflective member into the insertion space,
wherein the reflective holder comprises a holder reflective surface having a width that is wider than the member insertion portion and an inclination angle with respect to the display panel that is greater than an inclination angle of the reflective surface adjacent to the reflective holder,
wherein the light source is disposed to face the reflective surface on a first edge of the reflective member.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Jong Bin
• Hur Jean

Classifications

• G02F1/133605 Primary

  including specially adapted reflectors · CPC title

• G02F1/133606

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02B6/0096

  the lights guides being of the hollow type · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F1/133603

  with LEDs · CPC title