Color filter panel and its fabrication method using back exposure

• US 20070002219A1
• Filed: 09/06/2006
• Published: 01/04/2007
• Est. Priority Date: 11/24/2003
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Park, Jae-Seok, Lee, Dong-Hoon
• Granted Patent: US 7,423,710 B2
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence

Abstract

A color filter panel for a display device has a substrate, a black matrix layer on the substrate, a first opening, a color filter layer on the substrate, and a spacer in the first opening. Also, a display device has a thin film transistor (TFT) array panel, a color filter panel, and a liquid crystal between the TFT array panel and the color filter panel, where the color filter panel includes a substrate, a black matrix on the substrate, a first opening, a color filter layer on the substrate, and a spacer in the first opening.

Claims

1. A color filter panel for a display device, the color filter panel comprising:

a substrate;

a black matrix layer on the substrate and having a first opening;

a color filter layer on the substrate; and

a spacer in the first opening.

2. The color filter panel of claim 1, further comprising:

a second opening above the first opening and between parts of the color filter layer, wherein the spacer is in the first and second openings.

3. The color filter panel of claim 2, wherein a size of the second opening is equal to or greater than a size of the first opening.

4. The color filter panel of claim 1, further comprising:

an overcoat layer on the color filter layer; and

an alignment layer on the spacer.

5. The color filter panel of claim 1, further comprising:

a common electrode on the color filter layer; and

an alignment layer on the common electrode and the spacer.

6. The color filter panel of claim 1, wherein the color filter layer includes an ultraviolet ray absorbent material.

7. The color filter panel of claim 1, wherein the spacer is patterned by using a glass filter.

8. The color filter panel of claim 7, wherein the glass filter blocks a wavelength of at least 360 nm.

9. A display device comprising:

a thin film transistor (TFT) array panel;

a color filter panel; and

a liquid crystal layer between the TFT array panel and the color filter panel,

wherein the color filter panel includes;

a substrate,

a black matrix on the substrate and having a first opening,

a color filter layer on the substrate, and

a spacer in the first opening.

10. The display device of claim 9, wherein the color filter panel further includes:

a second opening on the first opening and between parts of the color filter layer, wherein the spacer is in the first and second openings.

11. The display device of claim 10, wherein a size of the second opening is equal to or greater than a size of the first opening.

12. The display device of claim 9, wherein the color filter panel further includes:

an overcoat layer on the color filter layer; and

an alignment layer on the spacer.

13. The display device of claim 9, wherein the color filter panel further includes:

a common electrode on the color filter layer; and

an alignment layer on the common electrode and the spacer.

14. The display device of claim 9, wherein the color filter layer includes an ultraviolet ray absorbent material.

15. The display device of claim 9, wherein the spacer is patterned by using a glass filter.

16. The display device of claim 15, wherein the glass filter blocks a wavelength of at least 360 nm.