# US 5,702,776 A · Organic polysilane composition, colored material, method of manufacturing colored material and liquid crystal display

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- Number: US 5,702,776 A
- Document ID: US5702776A
- Status: Granted
- Kind: A
- Application number: 08/612,580
- Filed: 1996-03-08
- Granted: 1997-12-30
- Earliest claimed: 1995-03-13
- Assignees: Kabushiki Kaisha Toshiba
- Inventors: Shuzi Hayase; Yoshihiko Nakano; Rikako Kani
- Web page: https://patentgrep.com/patent/US5702776A

## CPC

- G03F 7/265: {Selective reaction with inorganic or organometallic reagents after image-wise exposure, e.g. silylation}
- C08G 77/60: in which all the silicon atoms are connected by linkages other than oxygen atoms
- G02B 5/201: {in the form of arrays}
- G03F 7/0754: {Non-macromolecular compounds containing silicon-to-silicon bonds (G03F7/0752 takes precedence)}
- C09K 2323/033: Silicon compound, e.g. glass or organosilicon
- G03F: PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; (phototypographic composing devices B41B; photosensitive materials or processes for photographic purposes G03C; electrophotography, sensitive layers or processes therefor G03G)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A method of manufacturing a colored material wherein ultraviolet rays are irradiated onto an organic silicon compound film having any one of repeating units represented by the following general formulas (1) to (3), and then the film is heat-dried to turn the film into a three-dimensional structure. This process is repeated for each of R, G and B. As a result, a color filter provided with a color layer comprising a three-dimensional structure composed of silicon atom having one Si--C bond and formed through Si--O--Si bonds, and having a plurality of regions containing three different colors of R, G and B are contained therein can be manufactured. ##STR1## wherein R.sup.1 is a substituted or non-substituted hydrocarbon group, R.sup.2 is a substituted or non-substituted hydrocarbon group or acyl group, and R.sup.3 is a substituted or non-substituted silyl group or polysilane skeleton.

## Claims

### Claim 1

A colored material provided with a colored layer comprising a silicon-based matrix, comprised of a photo-oxidized organic polysilane and containing a coloring component wherein the number of silicon atom bonded through only one of its bonds to an organic residual group is 5 atomic % or more based on total number of silicon atoms in the silicon-based matrix.

### Claim 2 (depends on 1)

The colored material according to claim 1, wherein said colored layer comprises a plurality of colored regions, each region containing a color component which is different from those contained in other regions.

### Claim 3 (depends on 2)

The colored material according to claim 2, wherein said colored material is a color filter.

### Claim 4 (depends on 2)

The colored material according to claim 2, wherein said colored regions are either red, green, or blue.

### Claim 5 (depends on 1)

The colored material according to claim 1, wherein said silicon-based matrix comprises a three-dimensional structure composed of Si--O--Si bond.

### Claim 6 (depends on 5)

The colored material according to claim 5, wherein the number of said silicon atoms whose three bonds are offered to said Si--O--Si bond and whose one bond is offered to Si--C bond is 5 atomic % or more, based on total number of silicon atoms in the silicon-based matrix.

### Claim 7

A method of manufacturing a colored material which comprises the steps of:
forming a film of an organic silicon compound comprised of organic polysilane containing 5% or more of any one of repeating units represented by the following general formulas (1) to (3); ##STR16## wherein R.sup.1 is a substituted or non-substituted hydrocarbon group; R.sup.2 is a substituted or non-substituted hydrocarbon group or acyl group; and R.sup.3 is a substituted or non-substituted silyl group or polysilane skeleton;
irradiating a prescribed portion of the organic silicon compound film with ultraviolet rays;
coloring the irradiated portion of the organic silicon compound film by immersing the organic silicon compound film in a solution containing a color component; and
heat-drying the organic silicon compound film, thereby converting the colored portion of the organic silicon compound film into a three-dimensional structure.

### Claim 8 (depends on 7)

The method according to claim 7, wherein said organic silicon compound film is further immersed, after the immersion thereof in said solution containing a color component, in a colloidal solution containing at least one compound selected from the group consisting of metallic alkoxide and decomposition products of said metallic alkoxide.

### Claim 9 (depends on 7)

The method according to claim 7, wherein the step of immersing said organic silicon compound film in a solution containing a color component is performed by immersing said organic silicon compound film in a colloidal solution containing said color component and at least one compound selected from the group consisting of metallic alkoxide and decomposition products of said metallic alkoxide.

### Claim 10 (depends on 7)

The method according to claim 7, wherein the step of forming said organic silicon compound film is performed by coating a solution of an organic polysilane composition comprising an organic polysilane having a repeating unit represented by the general formula (1) and a radical-generating agent on a substrate, and then heat-drying the coated film.

### Claim 11 (depends on 10)

The method according to claim 10, wherein said organic polysilane composition further comprises an organic compound having at least two unsaturated bonds in its molecule.

### Claim 12 (depends on 10)

The method according to claim 10, wherein said R.sup.1 is selected from the group consisting of substituted or non-substituted phenyl, naphthyl, phenanthryl and anthranil group.

### Claim 13 (depends on 7)

The method according to claim 7, wherein said irradiating step and said coloring step comprise:
a first light-exposure step of irradiating ultraviolet rays onto a first region of the organic silicon compound film;
a first coloring step of immersing the organic silicon compound film in a solution containing a first color component after said first light-exposure step;
a second light-exposure step of irradiating ultraviolet rays onto a second region of the organic silicon compound film; and
a second coloring step of immersing the organic silicon compound film in a solution containing a second color component after said second light-exposure step.

### Claim 14 (depends on 13)

The method according to claim 13, wherein said colored material is a color filter.

### Claim 15

A liquid crystal display which comprises: a pair of transparent substrates facing each other; a pair of transparent electrodes, each disposed on a main surface of each of the transparent substrates so as to face each other; a liquid crystal between the pair of transparent substrates with each of the electrodes interposed therebetween; and a color filter interposed between one of the transparent substrate and the transparent electrode formed on the main surface of said one of the transparent substrate;
wherein said color filter is formed of a colored material provided with a colored layer comprising a silicon-based matrix comprised of a photo-oxidized organic polysilane and containing a coloring component, said silicon-based matrix containing 5 atomic % or more of silicon atoms bonded through only one of its bonds to an organic residual group, based on the total number of silicon atoms in the silicon-based matrix.

### Claim 16 (depends on 15)

The liquid crystal display according to claim 15, wherein said colored layer of the color filter comprises a plurality of regions colored in different colors of red (R), blue (B) and green (G).