Backlight module structure for LED chip holder

• US 20070116424A1
• Filed: 12/23/2005
• Published: 05/24/2007
• Est. Priority Date: 11/11/2005
• Status: Active Grant

• Current Assignee: CPT Technology (Group) Co., Ltd.
• Original Assignee: Chunghwa Picture Tubes Limited
• Inventors: Ting, Chu-Chi, Lo, Wei-Yu, Chiu, Tien-Lung, Tseng, Wei-Yang
• Granted Patent: US 7,406,228 B2
• Time in Patent Office: Days
• US Class Current: 385/147
• 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 6/0028 Light guide, e.g. taper
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer

Abstract

The present invention provides a backlight module for the light emitting device (LED) chip holder. The backlight module includes a top guide-light board, a bottom guide-light board, a chip holder with an inclined plane thereon, and a light emitting diode chip. The one side of the top guide-light board and the bottom guide-light board has a reflective sheet, and the light emitting diode chip located on the inclined surface of the chip holder, and further the light emitting diode chip embedded in the bottom guide-light. When the light emitting diode chip emitted incident light source, the light source produces the total reflection on the bottom guide-light board to reflect to the reflective mirror. Then, the light source is reflected to the top guide-light board by the reflective sheet, and is emitted out from the top guide-light board to be a light source for the backlight module to be a light source for the backlight module.

Claims

1. A light emitting diode chip backlight module, comprising:

a top guide-light board;

a bottom guide-light board located under said top guide-light board;

a light emitting diode chip;

a chip holder having a flat plane toward a side of said bottom guide-light board, and an included angle between said flat plane and a inclined plane of said bottom guide-light board, said light emitting diode chip located on said inclined plane; and

a reflective mirror located on said bottom guide-light board and one side of said top guide-light board.

2. The light emitting diode chip backlight module according to claim 1, wherein said top guide-light board comprises a plurality of marks therein.

3. The light emitting diode chip backlight module according to claim 1, wherein said chip holder comprises a metal substrate.

4. The light emitting diode chip backlight module according to claim 1, wherein said light emitting diode chip comprises a red, green, and blue (RGB) light emitting diode chip.

5. The light emitting diode chip backlight module according to claim 1, wherein said light emitting diode chip comprises a white light emitting diode chip.

6. The light emitting diode chip backlight module according to claim 1, further comprising a first reflective sheet, a second reflective sheet, and a third reflective sheet, said first reflective sheet located between said top guide-light board and said bottom guide-light board, said second reflective sheet located between said first reflective sheet and said bottom guide-light board, and said third reflective sheet located under said bottom guide-light board.

7. The light emitting diode chip backlight module according to claim 1, wherein said included angle is of about large than 90 degrees and is less than 180 degrees.

8. The light emitting diode chip backlight module according to claim 1, further comprising an epoxy resin covered said light emitting diode chip.

9. The light emitting diode chip backlight module according to claim 1, wherein said light emitting diode chip is embedded in said bottom guide-light board.

10. A light emitting diode chip backlight module, comprising:

a top guide-light board;

a bottom guide-light board having an cave therein, and said bottom guide-light board located under said top guide-light board;

a light emitting diode chip;

a chip holder located on a side of said cave of said bottom guide-light board, said chip holder having a inclined plane toward said side of said cave of said bottom guide-light board and an included angle between said inclined plane and said flat plane of said bottom guide-light board, and said light emitting diode chip is positioned on said inclined plane of said chip holder; and

a reflective mirror located on an outside of said bottom guide-light board and a side of said top guide-light board.

11. The light emitting diode chip backlight module according to claim 10, wherein said top guide-light board comprises a plurality of marks therein.

12. The light emitting diode chip backlight module according to claim 10, wherein said chip holder comprises a metal substrate.

13. The light emitting diode chip backlight module according to claim 10, wherein said light emitting diode chip is embedded into said bottom guide-light board.

14. The light emitting diode chip backlight module according to claim 10, further comprising a first reflective sheet, a second reflective sheet, and a third reflective sheet, said first reflective sheet located between said top guide-light board and said bottom guide-light board, said second reflective sheet located between said first reflective sheet and said bottom guide-light board, and said third reflective sheet located under said bottom guide-light board.

15. The light emitting diode chip backlight module according to claim 10, wherein said light emitting diode chip comprises a red, green, and blue (RGB) light emitting diode chip.

16. The light emitting diode chip backlight module according to claim 10, wherein said light emitting diode chip comprises a white light emitting diode chip.

17. The light emitting diode chip backlight module according to claim 10, wherein said included angle is of about large than 90 degrees and is less than 180 degrees.