Display apparatus comprising a middle mold frame having a reflector provided with a curved reflective surface

Patent metadata

Field	Value
Publication number	US-11435611-B2
Application number	US-201916729621-A
Country	US
Kind code	B2
Filing date	Dec 30, 2019
Priority date	Jan 3, 2019
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A display apparatus includes a rear chassis, a light source installed in the rear chassis to emit light, a diffuser plate that diffuses light emitted from the light source, a liquid crystal panel positioned in front of the diffuser plate to display an image, a front chassis that supports the liquid crystal panel, and a middle mold coupled between the front chassis and the rear chassis to support the diffuser plate, and is provided with a curved reflective surface formed in a curved shape to reflect the light, which is emitted from the light source module, to the diffuser plate.

First claim

What is claimed is:

1. A display apparatus comprising:
a rear chassis;
a light source that is disposed in the rear chassis and is configured to emit light;
a diffuser plate that is positioned in front of the light source and is configured to diffuse the light emitted from the light source;
a liquid crystal panel that is positioned in front of the diffuser plate and is configured to display an image;
a front chassis configured to support the liquid crystal panel; and
a middle mold that is coupled between the front chassis and the rear chassis to support the diffuser plate, and the middle mold comprises a reflector provided with a curved reflective surface to reflect the light which is emitted from the light source to the diffuser plate,
wherein the light source comprises a plurality of light sources and a substrate disposed on the rear chassis,
wherein the substrate has an upper surface and a lower surface, the plurality of light sources being mounted on the upper surface of the substrate, and the lower surface of the substrate facing the rear chassis, and
wherein the middle mold comprises a substrate supporter disposed at an inner end of the reflector, positioned on the upper surface of the substrate and configured to support the substrate, an edge portion of the substrate being supported between the substrate supporter and the rear chassis.

2. The display apparatus of claim 1 , wherein the curved reflective surface is concave toward the diffuser plate.

3. The display apparatus of claim 1 , wherein an inner tangent plane is in contact with an inner line of the curved reflective surface and an outer tangent plane is in contact with an outer line of the curved reflective surface, and the inner tangent plane and the outer tangent plane join each other on a single edge, and an intersection angle is formed between the inner tangent plane and the outer tangent plane.

4. The display apparatus of claim 3 , wherein the rear chassis comprises a base on which the light source is installed, and
wherein the inner tangent plane in contact with the inner line of the curved reflective surface is parallel to the base of the rear chassis, and the outer tangent plane in contact with the outer line of the curved reflective surface is inclined to the base of the rear chassis.

5. The display apparatus of claim 1 , wherein the middle mold is formed in a frame shape having an opening, and the light source is positioned in the opening.

6. The display apparatus of claim 1 , wherein the middle mold comprises:
a frame portion coupled to the front chassis and the rear chassis;
a diffuser plate supporter configured to protrude inward from the frame portion to support the diffuser plate; and
wherein the reflector is configured to extend from the diffuser plate supporter.

7. The display apparatus of claim 6 , wherein the frame portion, the diffuser plate supporter, and the reflector are integrally formed with each other.

8. The display apparatus of claim 6 , wherein the middle mold further comprises a rear supporter extending from the reflector to be supported by the rear chassis.

9. The display apparatus of claim 6 , wherein the curved reflective surface is formed in an entire area between tan inner line and an outer line of the reflector.

10. The display apparatus of claim 6 , wherein the curved reflective surface is formed in some area between an inner line and an outer line of the reflector.

11. The display apparatus of claim 10 , wherein the reflector comprises a planar reflective surface formed in a plane shape within the curved reflective surface.

12. The display apparatus of claim 10 , wherein the reflector comprises a planar reflective surface formed in a plane shape outside the curved reflective surface.

13. The display apparatus of claim 1 ,
wherein the display apparatus further comprises a reflector sheet positioned on and contacting the upper surface of the substrate to reflect light emitted from the plurality of light sources.

14. A display apparatus comprising:
a rear chassis;
a liquid crystal panel configured to display an image;
a light source that is positioned behind the liquid crystal panel and is configured to supply light to the liquid crystal panel, and the light source comprises a plurality of light sources and a substrate on which the plurality of light sources are mounted, the substrate having an upper surface and a lower surface, the plurality of light sources being mounted on the upper surface of the substrate, and the lower surface of the substrate facing the rear chassis;
a diffuser plate positioned between the light source and the liquid crystal panel, the diffuser plate being configured to diffuse light which is emitted from the light source to provide the diffused light to the liquid crystal panel;
a reflector sheet that is positioned on the substrate and is configured to reflect the light emitted from the light source;
a front chassis configured to support the liquid crystal panel; and
a middle mold that is coupled between the front chassis and the rear chassis to support the diffuser plate,
wherein the middle mold comprises:
a frame portion coupled to the front chassis and the rear chassis;
a diffuser plate supporter configured to protrude inward from the frame portion to support the diffuser plate;
a reflector configured to extend from the diffuser plate supporter and provided with the a curved reflective surface to reflect the light, which is emitted from the light source, to the diffuser plate, and
a substrate supporter disposed at an inner end of the reflector, positioned on the upper surface of the substrate, and configured to support the substrate, an edge portion of the substrate being supported between the substrate supporter and the rear chassis, and
wherein the curved reflective surface is concave toward the diffuser plate.

15. The display apparatus of claim 14 , wherein the reflector sheet and the middle mold are separate from each other.

16. The display apparatus of claim 14 , wherein the diffuser plate supporter and the reflector are integrally formed with each other.

17. The display apparatus of claim 14 , wherein an inner tangent plane is in contact with an inner line of the curved reflective surface and an outer tangent plane is in contact with an outer line of the curved reflective surface, and the inner tangent plane and the outer tangent plane join each other on a single edge, and an intersection angle is formed between the inner tangent plane and the outer tangent plane,
wherein the rear chassis comprises a base on which the light source is installed, and
wherein the inner tangent plane in contact with the inner line of the curved reflective surface is parallel to the base of the rear chassis, and the outer tangent plane in contact with the outer line of the curved reflective surface is inclined to the base of the rear chassis.

18. The display apparatus of claim 14 , wherein the reflector sheet is positioned on and contacts the upper surface of the substrate.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Chae Hyun Joong
• Kim Dae Jin
• Kim Yeon Ho

Classifications

• G02F1/133317

  Intermediate frames, e.g. between backlight housing and front frame · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/13332

  Front frames · CPC title

• G02F1/133314

  Back frames · CPC title

• G02F1/133308 Primary

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