Patent EP0552035A1 successfully refreshed from Google Patents.
EP0552035A1
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EP
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Method of forming color pattern
Assignee: Nippon Paint Co Ltd
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Filing: 1993-01-14
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Granted: —
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Expires: 2013-01-14
Abstract
Abstract The present invention provides the color pattern forming method wherein the process is simple and therefore the product can be manufactured at a low cost and it is possible to obtain an RGB color filter with superior pattern precision.
Inventors
- 👤 Hiroshi Tsushima
- 👤 Iwao Sumiyoshi
- 👤 Masaaki Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 06:11
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/0005; G03F7/0007; G03F7/004; G03F7/075; G03F7/0754
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
171 words
Method of forming multi-color dyed pattern on a polysilane layer comprising the following steps: a) a latent image forming step to form a latent image of dyed pattern by selectively exposing a polysilane layer formed on a substrate to UV ray, said polysilane layer being made of polysilane with the chemical structure indicated by the formula; wherein, R₁, R₂, R₃ and R₄ respectively are the groups selected from the group consisting of a substituted or non-substituted aliphatic hydrocarbon group, an alicyclic hydrocarbon group and an aromatic hydrocarbon group, m and n are integral numbers), b) a pattern dyeing step wherein said polysilane layer on which the latent image of dyed pattern Is formed is immersed in a dye bath containing at least one kind of basic dye, and c) another pattern dyeing process conducted at least once in the same way as in the aforesaid pattern dyeing step except that the images of different dyed patterns are formed in the said polysilane layer and different kinds of basic dye are used.
Claim 2
Dependent Claim
42 words
The method described in Claim 1 which includes at least twice of said pattern dyeing processes which are repeated one after another starting with the pattern dyeing process which used the dye having the largest speed of adsorption to the polysilane layer.
Claim 3
Dependent Claim
46 words
The method described in Claim 1 wherein the pattern dyeing process is conducted not by using the dye bath containing the basic dye, but by using a colored sol solution which is made from metal alkoxide and contains at least one kind of dye or pigment.
References Cited (Backward Citations)
DE2926189A1
Cited
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