Bottom lighting module

• US 7,036,956 B1
• Filed: 10/26/2005
• Issued: 05/02/2006
• Est. Priority Date: 06/17/2005
• Status: Active Grant

• Current Assignee: AUO Corp.
• Original Assignee: AU Optronics Corporation
• Inventors: Chou, Shen-Hong
• Primary Examiner(s): Luebke, Renee
• Assistant Examiner(s): Bennett, Zahra I.
• Application Number:
  US11/258,050
• Time in Patent Office: 188 Days
• Field of Search: 362/246, 362/29, 362/355, 362/331, 362/330, 362/433, 361/682, 361/742, 361/758, 361/804, 361/810, 439/467
• US Class Current: 362/246
• CPC Class Codes: G02F 1/133603 with LEDs

Abstract

A bottom lighting module comprises a substrate, a nut, a first diffusion sheet, a support, a second diffusion sheet and at least one light-emitting diode (LED). The nut is set on the substrate. The first diffusion sheet is disposed on the nut. The support comprises a body and a screw. The body further comprises a top end and a bottom face. The screw extends from the bottom face and passes through the first diffusion sheet to joint with the nut. The second diffusion sheet is disposed on the top end of the body. The LED is disposed below the first diffusion sheet.

Claims

1. A bottom lighting module, comprising:

a substrate;

a first combining member disposed on the substrate;

a first diffusion sheet supported by the first combining member;

a support, having a body and a second combining member, the body including a top end and a bottom face, the second combining member being extended from the bottom face and passing through the first diffusion sheet to engage with the first combining member;

a second diffusion sheet supported by the top end of the body; and

at least one light-emitting diode (LED) disposed below the first diffusion sheet.

2. The bottom lighting module according to claim 1, wherein said substrate is a printed circuit board and the at least one LED is associated with the printed circuit board.

3. The bottom lighting module according to claim 2, further comprising a back bezel disposed below the printed circuit board.

4. The bottom lighting module according to claim 2, further comprising a reflective plate disposed on the printed circuit board.

5. The bottom lighting module according to claim 4, wherein said reflective plate having a hole adapted to accommodate the first combining member.

6. The bottom lighting module according to claim 1, wherein said substrate is a back bezel.

7. The bottom lighting module according to claim 6, wherein said back bezel is composed of a metal plate.

8. The bottom lighting module according to claim 6, further comprising a printed circuit board having a hole adapted to accommodate the first combining member, wherein the at least one LED is associated therewith and the printed circuit board is disposed between the diffusion sheet and the substrate.

9. The bottom lighting module according to claim 8, further comprising a reflective plate disposed on the printed circuit board.

10. The bottom lighting module according to claim 9, wherein said reflective plate has a hole adapted to accommodate the first combining member.

11. The bottom lighting module according to claim 1, wherein said bottom face and the first combining member are spaced apart from each other by a distance ranging from 0.01 mm to 5 mm.

12. The bottom lighting module according to claim 1, wherein said first diffusion sheet has a hole adapted to accommodate the second combining member.

13. The bottom lighting module according to claim 1, wherein said second combining member is a pin.

14. The bottom lighting module according to claim 1, wherein said first combining member is a nut.

15. The bottom lighting module according to claim 1, wherein said first combining member has a hole jointing with the second combining member, a cross section of the second combining member and an aperture of the first combining member for receiving the second combining member have a shape selected from the group consisting of a circle, a hexagon, a square, and a triangle.

16. A bottom lighting module, comprising:

a back bezel;

a nut disposed on the back bezel;

a first diffusion sheet supported by the nut;

a printed circuit board, having a hole for passing the nut, being disposed between the back bezel and the first diffusion sheet;

at least one light-emitting diode (LED) associated with the printed circuit board;

a support having a body and a screw, the body including a top end and a bottom face, the screw being extended from the bottom face and passing through the first diffusion sheet to joint with the nut; and

a second diffusion sheet supported by the top end of the body.

17. A bottom lighting module, comprising:

a back bezel;

a printed circuit board disposed on the back bezel;

at least one light-emitting diode (LED) associated with the printed circuit board;

a nut disposed on the printed circuit board;

a first diffusion sheet supported by the nut;

a support having a body and a screw, the body including a top end and a bottom face, the screw being extended from the bottom face and passing through the first diffusion sheet to engage with the nut; and

a second diffusion sheet supported by the top end of the body.