Planar display structure with LED light source

• US 20040130515A1
• Filed: 01/06/2003
• Published: 07/08/2004
• Est. Priority Date: 01/06/2003
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: Toppoly Optoelectronics Corporation (InnoLux Corporation)
• Inventors: Mai, Che-Kuei, Chuang, Meng Ju
• Granted Patent: US 7,557,781 B2
• Time in Patent Office: Days
• US Class Current: 345/82
• CPC Class Codes: G02B 6/0021 for housing at least a part of the light source, e.g. by forming holes or recesses
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G02F 1/133603 with LEDs

Abstract

A planar display structure with LED light source includes a plane light source constituted by a plurality of LEDs and a light guide plate, wherein the light guide plate has a plurality of recesses that the above LEDs can be put into.

Claims

1. A planar display structure with LED light source, comprising:

a plane light source constituted by a plurality of LEDs (light emitting diode); and

a light guide plate having a plurality of recesses, wherein each LED can be put into a recess.

2. The planar display structure with LED light source according to claim 1, wherein said plurality of LEDs are on a substrate.

3. The planar display structure with LED light source according to claim 2, wherein said substrate is selected from the group consisting of PCB (printed circuit board) and FPC (flexible printed circuit board).

4. The planar display structure with LED light source according to claim 1, wherein said recess can cover the lighting portion of said LED.

5. The planar display structure with LED light source according to claim 1, wherein said recess can cover said whole LED.

6. The planar display structure with LED light source according to claim 1, wherein the inner surface of said recess is dealt with a diffusion process.

7. The planar display structure with LED light source according to claim 6, wherein said diffusion process forms a plurality of slanted portions (V-cuts) on the inner surface of said recess.

8. The planar display structure with LED light source according to claim 1, wherein the cross-section view of said recess is selected from the group consisting of circle, ellipse, and polygon.

9. The planar display structure with LED light source according to claim 1, wherein the pattern of array constituted by said plurality of LEDs is selected from the group consisting of rectangle-type and interlacing-type.

10. The planar display structure with LED light source according to claim 1, wherein the light-emitting surface of said light guide plate is dealt with a diffusion process.

11. The planar display structure with LED light source according to claim 10, wherein said diffusion process forms a plurality of slanted portions (V-cuts) on the light-emitting surface of said light guide plate.

12. The planar display structure with LED light source according to claim 1, wherein said plurality of LEDs and said light guide plate are made with the design of All-in-One.

13. The planar display structure with LED light source according to claim 1, wherein said plurality of LEDs are constituted by the lighting units that have red, green, and blue LEDs.

14. The planar display structure with LED light source according to claim 1, wherein said LED is a white LED.

15. A back light source of LCD display device, comprising:

a substrate;

a plane light source constituted by a plurality of LEDs on said substrate;

a light guide plate on said substrate and said plurality of LEDs, including a plurality of recesses that said plurality of LEDs can be put into, wherein the inner surface of said recess and the light-emitting surface of said light guide plate are dealt with a diffusion process;

a first diffusor sheet on said light guide plate;

a prism sheet on said first diffusor sheet; and

a second diffusor sheet on said prism sheet.

16. The back light source of LCD display device according to claim 15, wherein said substrate is selected from the group consisting of PCB (printed circuit board) and FPC (flexible printed circuit board).

17. The back light source of LCD display device according to claim 15, wherein said recess can cover the lighting portion of said LED.

18. The back light source of LCD display device according to claim 15, wherein said recess can cover said whole LED.

19. The back light source of LCD display device according to claim 15, wherein said diffusion process forms a plurality of slanted portions (V-cuts) on the inner surface of said recess and the light-emitting surface of said light guide plate.

20. The back light source of LCD display device according to claim 15, wherein the cross-section view of said recess is selected from the group consisting of circle, ellipse, and polygon.

21. The back light source of LCD display device according to claim 15, wherein the pattern of array constituted by said plurality of LEDs is selected from the group consisting of rectangle-type and interlacing-type.

22. The back light source of LCD display device according to claim 15, wherein said plurality of LEDs are constituted by the lighting units that have red, green, and blue LEDs.

23. The back light source of LCD display device according to claim 15, wherein said LED is a white LED.