IP Library Granted Patent US 7,430,031
Granted Patent B2
US 7,430,031 · App. 11/171,853 · Granted Sep 30, 2008

Liquid crystal display device and method of fabricating the same

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Quick Facts
Patent No.
US 7,430,031
App. No.
11/171,853
Granted
Sep 30, 2008
Kind
B2
Abstract

A method of fabricating an array substrate for an LCD (liquid crystal display device) is presented in which each pixel region contains multi-domain regions. The method includes: forming a first alignment layer by coating a first alignment material on an LCD substrate; forming a photoresist pattern on the first alignment layer; removing the first alignment layer exposed by the photoresist pattern; forming a second alignment layer by coating a second alignment material on the substrate; removing the photoresist pattern to lift off the second alignment layer formed on the photoresist pattern; and rubbing the first alignment layer and the second alignment layer in a predetermined direction. The first and second alignment layers are formed from different materials and have different alignment directions.

Claims (22)

1. An array substrate for an LCD (liquid crystal display device), comprising:

a plurality of gate lines formed on a substrate;

a plurality of data lines intersected with the gate lines to define a pixel region;

a switch formed at an intersection of the gate lines and the data lines;

a pixel electrode formed in the pixel region and electrically connected to the switch; and

a plurality of individual alignment layers having different alignment characteristics formed in the same layer and in the pixel region such that multi-domain regions are formed in the pixel regions,

wherein the alignment layers are formed from different materials.

2. The array substrate according to claim 1 , wherein the alignment layers have different alignment directions.

3. The array substrate according to claim 2 , wherein an alignment direction of at least one of the alignment layers is parallel to a rubbing direction.

4. The array substrate according to claim 2 , wherein an alignment direction of at least one of the alignment layers is perpendicular to a rubbing direction.

5. The array substrate according to claim 3 , wherein an alignment direction of at least one of the alignment layers is perpendicular to the rubbing direction.

6. The array substrate according to claim 2 , wherein alignment directions of adjacent alignment layers are perpendicular to each other.

7. The array substrate according to claim 6 , wherein the alignment direction of one of the adjacent alignment layers is parallel to a rubbing direction.

8. An array substrate for an LCD (liquid crystal display device), comprising:

a plurality of gate lines formed on a substrate;

a plurality of data lines intersecting the gate lines to define a pixel region; and

a plurality of individual alignment layers in the same layer and in the pixel region, the alignment layers formed from different materials and having different alignment directions.

9. The array substrate according to claim 8 , wherein the alignment direction of at least one of the alignment layers is parallel to a rubbing direction.

10. The array substrate according to claim 9 , wherein the alignment direction of at least one of the alignment layers is perpendicular to the rubbing direction.

11. The array substrate according to claim 8 , wherein the alignment direction of at least one of the alignment layers is perpendicular to a rubbing direction.

12. The array substrate according to claim 8 , wherein the alignment directions of adjacent alignment layers are perpendicular to each other.

13. The array substrate according to claim 12 , wherein the alignment direction of one of the adjacent alignment layers is parallel to a rubbing direction.

Assignments (2)
CHANGE OF NAME Recorded May 22, 2008
From: LG PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 020986/0231 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 29, 2005
From: PARK, JONG SUB
To: LG. PHILIPS LCD CO., LTD.
Reel/Frame 016748/0774 →