Method for forming color filters in flat panel displays by inkjetting

• US 20050253917A1
• Filed: 05/13/2004
• Published: 11/17/2005
• Est. Priority Date: 05/13/2004
• Status: Abandoned Application

• Current Assignee: Applied Materials Incorporated
• Original Assignee: Applied Materials Incorporated
• Inventors: Cheung Sze, Fan, White, John, Shang, Quanyuan
• Application Number:
  US10/845,629
• Publication Number:
  US 20050253917A1
• Time in Patent Office: Days
• US Class Current: 347/107
• CPC Class Codes: B41M 7/0072 using mechanical wave energy, e.g. ultrasonics; using magnetic or electric fields, e.g. electric discharge, plasma
• CPC Class Codes: B41M 7/0081 using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography

Abstract

A method for forming color filters for flat panel displays comprising dispensing color inks into a pre-patterned matrix using an inkjet device and curing the dispensed color inks. In one aspect, the color inks are cured in a concave configuration. In another aspect, the color inks are cured using electron beam, laser, X-ray, or other suitable high energy source.

Claims

1. A method for forming color filters for flat panel displays, comprising:

dispensing color inks into a pre-patterned matrix using an inkjet device, and

curing the dispensed color inks, whereby the cured color inks have a concave configuration.

2. The method of claim 1, wherein each color ink comprises:

one or more color pigments and/or dyes,

one or more monomers and/or oligomers for forming a polymer matrix, and

one or more solvents.

3. The method of claim 1, wherein the colors of the color inks are selected from the group consisting of:

red, green and blue,

red, green, blue and white,

cyan, yellow and magenta, and

cyan, yellow, magenta and white.

4. The method of claim 1, wherein each color ink comprises:

10-30% color pigments and/or dyes,

20-60% monomers and/or oligomers, and

30-50% solvents.

5. The method of claim 2, wherein each color ink further comprises one or more photoinitiators.

6. The method of claim 2, wherein the one or more solvents are selected from the group consisting of:

3-methoxybutyl acetate,

methoxy propanolacetate,

ethoxyethylpropionate,

propyleneglycol monomethylether acetate, and

combinations thereof.

7. The method of claim 1, wherein the pre-patterned matrix comprises a resin black matrix.

8. The method of claim 1, wherein the pre-patterned matrix comprises a chromium black matrix.

9. The method of claim 1, wherein the pre-patterned matrix has a height of about 10,000-25,000 Å

.

10. The method of claim 1, wherein the pre-patterned matrix has a height greater than a center thickness of the cured color inks.

11. The method of claim 1, wherein the inkjet device comprises one or more arrays of one or more nozzles.

12. The method of claim 1, wherein the dispensed color inks are cured using UV radiation.

13. The method of claim 1, wherein the dispensed color inks are cured using electron beam, laser, or X-ray.

14. A method for forming color filters for flat panel displays comprising:

dispensing color inks into a pre-patterned matrix using an inkjet device; and

curing the dispensed color inks, wherein the curing is accomplished by use of an electron beam energy source.

15. The method of claim 14 wherein the color inks comprise materials selected from the group consisting of:

one or more color pigments and/or dyes,

one or more monomers and/or oligomers for forming a polymer matrix, and

one or more solvents.

16. The method of claim 14 wherein the pre-patterned matrix comprises a resin black matrix.

17. The method of claim 14 wherein the pre-patterned matrix comprises a chromium black matrix.

18. The method of claim 14, wherein the pre-patterned matrix has a height of about 10,000-25,000 Å

.

19. The method of claim 14 wherein the pre-patterned matrix has a height greater than a center thickness of the cured color inks.

20. A method for forming color filters for flat panel displays comprising:

dispensing color inks into a pre-patterned matrix using an inkjet device, whereby the color inks have a concave configuration; and

curing the dispensed color inks, wherein the curing is accomplished by use of a high energy source.

21. The method of claim 20 wherein the high energy source is selected from the group consisting of:

electron beam,

laser, and

X-ray.

22. A color filter produced by a process comprising:

dispensing color inks into a pre-patterned matrix using an inkjet device, whereby the dispensed color inks have a concave configuration, and

curing the dispensed color inks.

23. A color filter produced by a process comprising:

dispensing color inks into a pre-patterned matrix using an inkjet device, and

curing the dispensed color inks, wherein the curing is accomplished by use of a high energy source.

24. The color filter of claim 23, wherein:

A) the dispensed color inks have a concave configuration; and

B) curing is accomplished by use of a high energy source selected from the group consisting of;

electron beam,

laser, and

X-ray.