Light-source fixing structure for backlight module

• US 7,611,274 B2
• Filed: 10/25/2006
• Issued: 11/03/2009
• Est. Priority Date: 08/22/2006
• Status: Active Grant

• Current Assignee: Chunghwa Picture Tubes Limited
• Original Assignee: Chunghwa Picture Tubes Limited
• Inventors: Hsiao, Chih-Chun, Liao, Cheng-Min
• Primary Examiner(s): TON, ANABEL
• Application Number:
  US11/585,973
• Publication Number:
  US 20080049444A1
• Time in Patent Office: 1,105 Days
• Field of Search: 362600-634
• US Class Current: 362/634
• CPC Class Codes: G02B 6/0083 Details of electrical connections of light sources to drivers, circuit boards, or the like
• CPC Class Codes: G02B 6/0085 Means for removing heat created by the light source from the package heat extraction or cooling elements for semiconductor light sources in general H01L33/64
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence

Abstract

A light-source fixing structure for the backlight module is disclosed. The light-source fixing structure includes: a light guide plate provided with a light-incident surface; a cover having a groove, wherein the groove has a surface facing toward to the light-incident surface of the light guide plate; a light bar arranged upon the surface of the groove. The light bar may be replaced easily by sliding out from the groove when the light bar is damaged. The cover not only may enhance the strength of the backlight module but also may prevent the backlight module over temperature.

Claims

1. A light-source fixing structure for a backlight module comprising:

a light guide plate having a light-incident surface;

a cover provided with a groove, wherein said groove has an inner surface facing toward to said light-incident surface of said light guide plate and an outer surface opposite to the inner surface;

a light bar arranged upon said surface of said groove; and

at least a crook arranged on the inner surface and the outer surface of the said cover and clipping said light bar and the cover so as to fix said light bar on the cover.

2. The light-source fixing structure for the backlight module according to claim 1, wherein said groove is formed by at least a protruded rib projected from the interior surface of said cover.

3. The light-source fixing structure for the backlight module according to claim 1, further comprising a plurality of fixing elements to join said light bar and said cover.

4. The light-source fixing structure for the backlight module according to claim 3, wherein said fixing elements comprise screws.

5. The light-source fixing structure for the backlight module according to claim 1, further comprising a plurality of optical films arranged above said light guide plate.

6. The light-source fixing structure for the backlight module according to claim 1, wherein said cover is a heat-sinking metal.

7. The light-source fixing structure for the backlight module according to claim 1, wherein said light bar comprises a substrate and at least a light emitting diode fixed on said substrate.

8. The light-source fixing structure for the backlight module according to claim 7, wherein said substrate comprises the printed circuit board.

9. The light-source fixing structure for the backlight module according to claim 7, further comprising a metal substrate adhered under said substrate, wherein said metal substrate comprises aluminum or copper.