Liquid crystal display

• US 20090284695A1
• Filed: 08/01/2006
• Published: 11/19/2009
• Est. Priority Date: 08/01/2005
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Yun-seok, Jeong, Ji-voung, Yang, Seok-Voon, Kim, Sun-Mi
• Granted Patent: US 7,847,891 B2
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: G02F 1/133388 with constructional differences between the display region and the peripheral region
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/136222 Colour filters incorporated in the active matrix substrate

Abstract

A liquid crystal display is provided. The liquid crystal display includes a first substrate and a second substrate facing and spaced apart from each other in a predetermined distance, in which the second substrate has a first area in which color filters are formed over a plurality of pixel regions and a second area in which the color filters are formed at each of the plurality of pixel regions.

Claims

1. A liquid crystal display comprising:

a first substrate; and

a second substrate facing and spaced apart from each other in a predetermined distance,

wherein the second substrate has a first area in which color filters are formed over a plurality of pixel regions and a second area in which the color filters are formed at each of the plurality of pixel regions.

2. The liquid crystal display of claim 1, wherein the second area is formed at display regions on the second substrate, where images are displayed, while the first area is formed at non-display regions other than the display regions.

3. The liquid crystal display of claim 1, wherein the second substrate comprises:

an insulating substrate;

a black matrix formed on the insulating substrate;

a first column spacer formed on a color filter in the first area so as to overlap with the black matrix; and

a second column spacer formed on the black matrix in the second area.

4. The liquid crystal display of claim 3, wherein a predetermined height difference is created between a top end of the first column spacer and a top end of the second column spacer.

5. The liquid crystal display of claim 4, wherein the predetermined height difference is substantially the same as a thickness of the color filter.

6. The liquid crystal display of claim 3, further comprising an overcoat layer between the color filter and the column spacers.

7. The liquid crystal display of claim 6, wherein a predetermined height difference is created between a top end of the first column spacer and a top end of the second column spacer.

8. The liquid crystal display of claim 7, wherein the predetermined height difference is approximately 60% of the thickness of the color filter.

9. The liquid crystal display of claim 6, further comprising a common electrode between the overcoat layer and the column spacers.

10. The liquid crystal display of claim 1, wherein the second substrate comprises:

an insulating substrate;

a gate line formed on the insulating substrate in a transverse direction;

a data line insulated from the gate line and extending in a longitudinal direction to intersect the gate line;

a pixel electrode formed at each pixel defined at an intersection of the gate line and the data line;

a thin film transistor connected to the gate line, the data line and the pixel electrode;

a first column spacer formed on a color filter in the first area so as to overlap with the gate line; and

a second column spacer formed to overlap with the gate line in the second area.

11. The liquid crystal display of claim 10, wherein a predetermined height difference is created between a top end of the first column spacer and a top end of the second column spacer.

12. The liquid crystal display of claim 11, wherein the predetermined height difference is substantially the same as a thickness of the color filter.

13. The liquid crystal display of claim 10, further comprising a common electrode producing a lateral electric field together with the pixel electrode.