EDGE-TYPE BACKLIGHT MODULE AND MANUFACTURING METHOD THEREOF

• US 20070279933A1
• Filed: 04/04/2007
• Published: 12/06/2007
• Est. Priority Date: 06/02/2006
• Status: Abandoned Application

• Current Assignee: Coretronic Corporation
• Original Assignee: Coretronic Corporation
• Inventors: Li, Ching-Shiang, Shiau, Tzeng-Ke, Chou, Wen-Bin, Hou, Teng-Chao
• Application Number:
  US11/696,195
• Publication Number:
  US 20070279933A1
• Time in Patent Office: Days
• US Class Current: 362/606
• CPC Class Codes: G02B 6/0053 Prismatic sheet or layer; Brightness enhancement element, sheet or layer
• CPC Class Codes: G02B 6/0065 Manufacturing aspects; Material aspects

Abstract

An edge-type backlight module includes a light source, a light guide plate installed on a lateral side of the light source, and a brightness enhancement film disposed above the light guide plate. The brightness enhancement film includes a plurality of micro-structures on a bottom surface connected to a top surface of the light guide plate in an adhesion manner or a hot melt manner.

Claims

1. An edge-type backlight module comprising:

a light source;

a light guide plate installed on a lateral side of said light source; and

a brightness enhancement film disposed above said light guide plate, said brightness enhancement film comprising a plurality of micro-structures on a bottom surface adhered to a top surface of said light guide plate.

2. The edge-type backlight module of claim 1 further comprising an adhesive layer adhered to said top surface of said light guide plate and said plurality of micro-structures on said bottom surface of said brightness enhancement film.

3. The edge-type backlight module of claim 2 wherein said adhesive layer is made of UV adhesive or thermosetting adhesive.

4. The edge-type backlight module of claim 1 wherein each of said micro-structures is a symmetric protruding structure.

5. The edge-type backlight module of claim 4 wherein each of said micro-structures is a spherical structure or a parabolic structure.

6. The edge-type backlight module of claim 1 wherein each of said micro-structures is an asymmetric protruding structure.

7. The edge-type backlight module of claim 1 wherein each of said micro-structures is a tapering structure, an alpine structure, or a W-shaped structure.

8. The edge-type backlight module of claim 1 wherein said brightness enhancement film comprises a plurality of micro-structures on a top surface for concentrating light within a range.

9. The edge-type backlight module of claim 1 further comprising a diffuser disposed above said brightness enhancement film for diffusing light.

10. An edge-type backlight module comprising:

a light source;

a light guide plate installed on a lateral side of said light source; and

a brightness enhancement film disposed above said light guide plate, said brightness enhancement film comprising a plurality of micro-structures on a bottom surface connected to a top surface of said light guide plate in a hot melt manner.

11. The edge-type backlight module of claim 10 wherein each of said micro-structures is a symmetric protruding structure.

13. The edge-type backlight module of claim 10 wherein each of said micro-structures is an asymmetric protruding structure.

14. The edge-type backlight module of claim 10 wherein each of the micro-structures is a tapering structure, an alpine structure, or a W-shaped structure.

15. The edge-type backlight module of claim 10 wherein said brightness enhancement film comprises a plurality of micro-structures on a top surface for concentrating light emitting out of said brightness enhancement film within a range.

16. The edge-type backlight module of claim 10 further comprising a diffuser disposed above said brightness enhancement film for diffusing light.

12. The edge-type backlight module of claim 111 wherein each of said micro-structures is a spherical structure or a parabolic structure.

17. A method for manufacturing an edge-type backlight module, said method comprising:

(a) forming a plurality of micro-structures on a bottom surface of a brightness enhancement film; and

(b) connecting said plurality of micro-structures on said bottom surface of said brightness enhancement film to a top surface of a light guide plate in an adhesion manner or in a hot melt manner.

18. The method of claim 17 wherein step (b) comprises utilizing an adhesive layer to adhere to the said top surface of said light guide plate and said plurality of micro-structures on said bottom surface of said brightness enhancement film.

19. The method of claim 18 further comprising forming a plurality of micro-structures on a top surface of said brightness enhancement film for concentrating light emitting out of said brightness enhancement film within a range.