IP Library Granted Patent US 7,648,250
Granted Patent B2
US 7,648,250 · App. 11/644,050 · Granted Jan 19, 2010

Direct type backlight assembly

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Quick Facts
Patent No.
US 7,648,250
App. No.
11/644,050
Granted
Jan 19, 2010
Kind
B2
Abstract

A direct type backlight assembly is disclosed, in which a lamp guide is formed in a shape which can absorb an external force to prevent distortion from occurring from contact between the lamp guide and a diffusion plate, and to prevent the diffusion plate from being damaged. The direct type backlight assembly includes a light-emission lamp provided under an LCD panel; a reflecting plate provided on the bottom side of the light-emission lamp; a diffusion plate provided above the light-emission lamp; optical sheets provided on the diffusion plate; and a lamp guide provided on and connected with the reflecting plate, wherein the lamp guide has a supporter having a compression structure, the height thereof varying based on a load applied thereto.

Claims (22)

1. A backlight assembly comprising:

at least one lamp;

a diffusion plate provided above the lamp;

a lamp guide, wherein the lamp guide has a supporter formed in shape of a wave, and wherein the supporter supports the diffusion plate.

2. The backlight assembly of claim 1 , further comprising a reflecting plate disposed under the lamp guide, wherein the supporter is formed of a material having substantially the same reflectivity as the reflecting plate.

3. The backlight assembly of claim 2 , wherein the supporter is formed at least one of polycarbonate (PC) or metal.

4. The backlight assembly of claim 1 , further comprising a reflecting plate disposed under the lamp guide, wherein the lamp guide has a holder which maintains a predetermined distance between the lamp and the reflecting plate.

5. The backlight assembly of claim 4 , wherein the supporter is formed integrally with the holder.

6. The backlight assembly of claim 5 , wherein the lamp guide is provided with one supporter and at least one holder.

7. The backlight assembly of claim 1 , further comprising optical sheets disposed on the diffusion plate.

8. The backlight assembly of claim 1 , further comprising a reflecting plate disposed under the lamp guide, wherein the at least one lamp is displaced from the reflecting plate by a distance of about 4˜6mm.

9. A backlight assembly comprising:

at least one lamp provided under an liquid crystal display (LCD) panel including two opposite substrates and a liquid crystal layer disposed between the two opposite substrates;

a reflecting plate disposed below the lamp;

a diffusion plate disposed above the lamp; and

a lamp guide disposed between the reflecting plate and the lamp, wherein the lamp guide has a supporter formed in shape of a wave, and wherein the supporter supports the diffusion plate.

10. The backlight assembly of claim 9 , wherein the supporter is formed of a material having reflecting properties substantially the same as that of the reflecting plate.

11. The backlight assembly of claim 9 , wherein the lamp guide has a holder to maintain a predetermined distance between the light-emission lamp and the reflecting plate.

12. The backlight assembly of claim 11 , wherein the supporter is formed integrally with the holder.

13. The backlight assembly of claim 12 , wherein the lamp guide is provided with one supporter and at least one holder.

14. The backlight assembly of claim 9 , further comprising optical sheets disposed on the diffusion plate.

15. The backlight assembly of claim 11 , wherein the at least one lamp is displaced from the reflecting plate by a distance of about 4˜6mm.

Assignments (2)
CHANGE OF NAME Recorded May 22, 2008
From: LG PHILIPS CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 020976/0785 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2006
From: LEE, MIN GYU
To: LG. PHILIPS LCD CO., LTD
Reel/Frame 018743/0467 →