IP Library Granted Patent US 7,746,426
Granted Patent B2
US 7,746,426 · App. 11/874,651 · Granted Jun 29, 2010

Liquid crystal display comprising a wide view polarizer

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Quick Facts
Patent No.
US 7,746,426
App. No.
11/874,651
Granted
Jun 29, 2010
Kind
B2
Abstract

A liquid crystal display includes a first display panel including a first substrate and a lower alignment layer formed on the first substrate, a second display panel that includes a second substrate facing the first substrate to maintain a predetermined cell gap between the substrates and an upper alignment layer formed on the second substrate, a liquid crystal layer provided between the first and second display panels, a wide view polarizer and a lower polarizer sequentially attached to the outside of the first display panel, and an upper polarizer attached to the outside of the second display panel. An absorption axis of the wide view polarizer is inclined with respect to an absorption axis of the lower polarizer by 45°. An absorption axis C′ inclined with respect to the absorption axis A′ of the lower polarizer by 45° is interposed between the lower polarizer and the liquid crystal panel in the backlit electrically controlled birefringence (ECB) mode.

Claims (23)

1. A liquid crystal display comprising:

a first display panel including a first substrate and a lower alignment layer formed on the first substrate;

a second display panel including a second substrate and an upper alignment layer formed on the second substrate, the second substrate facing the first substrate to maintain a predetermined cell gap between the substrates;

a liquid crystal layer provided between the first and second display panels;

a wide view polarizer and a lower polarizer sequentially attached to the outside of the first display panel; and

an upper polarizer attached to the outside of the second display panel, wherein an absorption axis of the wide view polarizer is inclined with respect to an absorption axis of the lower polarizer by 45°.

2. The liquid crystal display of claim 1 , wherein a lower rubbing axis of the lower alignment layer is reversed and parallel to a rubbing axis of the upper alignment layer.

3. The liquid crystal display of claim 2 , wherein the lower rubbing axis is reversed and parallel to the absorption axis of the wide view polarizer.

4. The liquid crystal display of claim 3 , wherein the liquid crystal layer is formed of liquid crystal that has positive refractive anisotropy.

5. The liquid crystal display of claim 4 , wherein the wide view polarizer includes a compensation film and wide view supporters.

6. The liquid crystal display of claim 5 , wherein the compensation film is an O-plate.

7. A liquid crystal display comprising:

a first display panel including a first substrate and a lower alignment layer formed on the first substrate;

a second display panel including a second substrate and an upper alignment layer formed on the second substrate, the second substrate facing the first substrate to maintain a predetermined cell gap between the substrates;

a liquid crystal layer provided between the first and second display panels;

a lower polarizer attached to the outside of the first display panel; and

a wide view polarizer and an upper polarizer sequentially attached to the outside of the second display panel,

wherein an absorption axis of the wide view polarizer is inclined with respect to an absorption axis of the upper polarizer by 45°.

8. The liquid crystal display of claim 7 , wherein a lower rubbing axis of the lower alignment layer is reversed and parallel to an upper rubbing axis of the upper alignment layer.

9. The liquid crystal display of claim 8 , wherein the upper rubbing axis is reversed and parallel to the absorption axis of the wide view polarizer.

10. The liquid crystal display of claim 9 , wherein the liquid crystal layer is formed of liquid crystal, which has positive refractive anisotropy, in an electrically controlled birefringence (ECB) mode.

11. The liquid crystal display of claim 10 , wherein the wide view polarizer includes a compensation film and wide view supporters.

12. The liquid crystal display of claim 11 , wherein the compensation film is an O-plate.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 20, 2012
From: SAMSUNG ELECTRONICS CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 028991/0922 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 18, 2007
From: KIM, SANG-WOO; YI, LI
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 019983/0924 →