IP Library Granted Patent US 7,731,406
Granted Patent B2
US 7,731,406 · App. 11/739,862 · Granted Jun 8, 2010

Backlight assembly and liquid crystal display having the same

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Quick Facts
Patent No.
US 7,731,406
App. No.
11/739,862
Granted
Jun 8, 2010
Kind
B2
Abstract

A backlight assembly and an LCD having the same are disclosed to prevent wrinklings of optical sheets due to close contact of optical sheets or prism sheets. The backlight assembly includes multiple optical sheets disposed between a light guiding plate and a display unit, for the diffusion of light, collection of light and securing of horizontal viewing angle. The front surface or the rear surface of each of the optical sheets each has an embossing structure or a matte structure to decrease a contact area between the multiple optical sheets and to minimize frictions.

Claims (12)

1. A liquid crystal display device, comprising:

a light generator that generates light;

a display unit disposed over the light generator and having a display panel to display an image; and

a reflection polarization film having front and rear surfaces to enhance brightness of the light provided to the display unit from the light generator, the front surface being attached to the display panel, the rear surface facing the light generator.

2. The liquid crystal display device of claim 1 , wherein the rear surface of the reflection polarization film has an embossing structure.

3. The liquid crystal display device of claim 1 , further comprising at least one prism film disposed between the reflection polarization film and the light generator to enhance the efficiency of collecting the light from the light generator.

4. The liquid crystal display device of claim 3 , wherein the prism sheet has a facing surface facing the light generator and the facing surface has a matte structure or an embossing structure.

5. The liquid crystal display device of claim 1 , further comprising a protective sheet disposed between the reflection polarization film and the light generator to prevent interference of the light.

6. The liquid crystal display device of claim 1 , further comprising:

a diffusion sheet disposed on the light generator to disperse the light from the light generator;

at least one prism film disposed on the diffusion sheet to enhance the efficiency of collecting the light from the diffusion sheet; and

a protective sheet disposed between the prism film and the reflection polarization film to prevent interference of the light.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 19, 2012
From: SAMSUNG ELECTRONICS, CO., LTD
To: SAMSUNG DISPLAY CO., LTD
Reel/Frame 028990/0065 →