BACKLIGHT MODULE AND DISPLAY APPARATUS HAVING THE SAME

• US 20090196068A1
• Filed: 10/08/2008
• Published: 08/06/2009
• Est. Priority Date: 02/01/2008
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Wang, Chih-Lin, Hung, Chun Chang
• Granted Patent: US 7,798,697 B2
• Time in Patent Office: Days
• US Class Current: 362/608
• CPC Class Codes: G02B 6/003 Lens or lenticular sheet or layer
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer

Abstract

A backlight module is provided. The backlight module includes a light guide plate, an optical component, and a light source for generating light. The optical component is provided for adjusting or veering the light emitted from the light source along a direction perpendicular to the light guide plate. One end of the optical component is affixed to the light source for receiving the incident light. The other end of the optical component faces, and is separated from, the light guide plate, so as to direct the light to the light guide plate.

Claims

1. A backlight module, comprising:

a light source for generating light;

a light guide plate; and

an optical component configured to adjust the light along a direction perpendicular to said light guide plate;

wherein one end of said optical component is affixed to said light source for receiving the incident light, and the other end of said optical component faces, and is separated from said light guide plate, so as to direct the light to said light guide plate.

2. A backlight module according to claim 1, wherein said optical component is provided for focusing the incident light.

3. A backlight module according to claim 1, wherein said optical component is a cylindrical lens.

4. A backlight module according to claim 3, wherein said cylindrical lens has a convex surface facing said light guide plate and has a plain surface facing said light source.

5. A backlight module according to claim 3, wherein said cylindrical lens has a radius of curvature not smaller than a distance between said cylindrical lens and said light guide plate, so as to focus the light into said light guide plate.

6. A backlight module according to claim 3, wherein said cylindrical lens is integratedly formed with said light source and is provided for encapsulating said light source.

7. A backlight module according to claim 1, wherein said light guide plate has a plain side for receiving said incident light.

8. A backlight module according to claim 1, wherein said light source is a side-view LED.

9. A backlight module according to claim 1, wherein said light source and said optical component are affixed to each other by optical glue.

10. A backlight module according to claim 1, wherein said optical component is integratedly formed with said light source and is provided for encapsulating said light source.

11. A display apparatus, comprising:

a backlight module, comprising;

a light source for generating light;

a light guide plate; and

an optical component configured to adjust the light along a direction perpendicular to said light guide plate;

wherein one end of said optical component is affixed to said light source for receiving the incident light, and the other end of said optical component faces, and is separated from said light guide plate, so as to direct the incident light to said light guide plate.

12. A display apparatus according to claim 11, wherein said optical component is a cylindrical lens.

13. A display apparatus according to claim 12, wherein said cylindrical lens has a convex surface facing said light guide plate and has a plain surface facing said light source.

14. A display apparatus according to claim 12, wherein said cylindrical lens has a radius of curvature not smaller than a distance between said cylindrical lens and said light guide plate, so as to focus the light into said light guide plate.

15. A display apparatus according to claim 12, wherein said cylindrical lens is integratedly formed with said light source and is provided for encapsulating said light source.

16. A display apparatus according to claim 11, wherein said light guide plate has a plain side for receiving said incident light.