FRAME, BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY MODULE

• US 20120092593A1
• Filed: 12/17/2010
• Published: 04/19/2012
• Est. Priority Date: 10/19/2010
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chang, Chih-Wei, Hsu, Po-Chun, Hsieh, Kun-Hung
• Granted Patent: US 8,823,894 B2
• Time in Patent Office: Days
• US Class Current: 349/67
• 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 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence

Abstract

A frame formed by cutting and bending a plate base is provided. The maximum thickness of the frame is T, the thickness of the plate base is t, and 1.5t≦T≦2.5t. The frame includes a first plate element, a second plate element, and a bending portion. The second plate element is directly contacted to the first plate element, and the first plate element is substantially parallel to the second plate element. The bending portion is connected between the first plate element and the second plate element. A backlight module using the above-mentioned frame and a liquid crystal display (LCD) module using the backlight module are also provided.

Claims

1. A frame formed by cutting and bending a plate base, a maximum thickness of the frame being T, a thickness of the plate base being t, 1.5t≦

T≦

2.5t, the frame comprising;

a first plate element;

a second plate element directly contacted to the first plate element, the first plate element being substantially parallel to the second plate element; and

a bending portion connected between the first plate element and the second plate element.

2. The frame as claimed in claim 1, wherein a material of the plate base comprises a metallic material or an alloy.

3. The frame as claimed in claim 1, wherein a Young'"'"'s modulus of the plate base is substantially greater than or equal to 10⁴ MPa.

4. The frame as claimed in claim 1, wherein 0.3 mm≦

t≦

5.0 mm.

5. The frame as claimed in claim 1, wherein 0.45 mm≦

T≦

12.5 mm.

6. The frame as claimed in claim 1, wherein the first plate element has a first through hole, and the second plate element has a second through hole corresponding to the first through hole.

7. The frame as claimed in claim 1, wherein the first plate element has a first alignment notch.

8. The frame as claimed in claim 1, wherein the second plate element has a second alignment notch.

9. A backlight module comprising:

a back plate;

the frame as claimed in claim 1, the first plate element being directly contacted to the back plate and located between the second plate element and the back plate;

a light guide plate configured on the back plate and having a light-incident side surface; and

a light bar configured on the back plate and located between the first plate element and the light-incident side surface of the light guide plate.

10. The backlight module as claimed in claim 9, wherein the first plate element has a first alignment notch.

11. The backlight module as claimed in claim 10, wherein the light guide plate has a first alignment portion fixed into the first alignment notch.

12. The backlight module as claimed in claim 10, the light bar comprising:

a circuit board having a second alignment portion fixed into the first alignment notch; and

a plurality of light emitting diode devices configured on the circuit board.

13. The backlight module as claimed in claim 9, further comprising an optical film set configured above the light guide plate.

14. The backlight module as claimed in claim 13, wherein the second plate element has a second alignment notch.

15. The backlight module as claimed in claim 14, wherein the optical film set has a third alignment portion fixed into the second alignment notch.

16. The backlight module as claimed in claim 9, wherein the first plate element has a first through hole, and the second plate element has a second through hole corresponding to the first through hole.

17. The backlight module as claimed in claim 16, wherein the back plate has a locking hole corresponding to the first through hole and the second through hole.

18. The backlight module as claimed in claim 17, further comprising a locking element penetrating the first through hole and the second through hole and being locked into the locking hole.

19. The backlight module as claimed in claim 9, further comprising a reflector configured below the light guide plate.

20. A liquid crystal display module comprising:

the backlight module as claimed in claim 9;

a liquid crystal display panel configured on the frame and located above the light guide plate; and

a front bezel assembled to the back plate to cover the frame and a portion of the liquid crystal display panel.