Claims
- 1. A color filter comprising a transparent substrate and a colored layer formed on the surface of said substrate, wherein
- said colored layer consists essentially of a transparent layer and a coloring agent dispersed within said transparent layer and has a thickness of 10 .mu.m or less so as to transmit light,
- said transparent layer comprises a gel or glass material made from an alkoxysilane solution, and
- said coloring agent contains at least one pigment having absorption peaks for visible light at selected wavelengths.
- 2. A color filter according to claim 1, wherein said substrate is made of glass or plastic material.
- 3. A color filter according to claim 1, wherein said coloring agent is an organic pigment.
- 4. A color filter according to claim 1, wherein said coloring agent is at least one pigment having absorption peaks at different wavelengths.
- 5. A color filter according to claim 1, wherein said transparent layer is capable of absorbing ultraviolet radiation.
- 6. A color filter according to claim 1, wherein
- said color layer is formed by the following steps comprising:
- preparing a colorant solution by dispersing said coloring agent in an alkoxysilane solution,
- applying said colorant solution to said substrate, and
- drying or heating said substrate to which said colorant solution has been applied.
- 7. A color filter according to claim 1, wherein said alkoxysilane is selected from the group consisting of tetraethoxysilane, tetramethoxysilane and methyltriethoxysilane.
- 8. A color filter according to claim 1, wherein said coloring agent is selected from the group consisting of pigments in the category of azo, anthraquinone, naphthoquinone, perylene, indigo, fluorenone, polymethine, polyene, acridine and phthalocyanine.
- 9. A color filter according to claim 1, wherein said coloring agent is selected from the group consisting of copper phthalocyanine, phthaloperinone, and 4,5,6,7-tetrachloroquinophthalone.
- 10. A color filter according to claim 1, wherein said transparent layer further contains a hydroxypropyl cellulose.
- 11. A color filter according to claim 1, wherein said colored layer is formed on each of both surfaces of said substrate.
- 12. A color filter comprising a transparent substrate and a colored layer formed on the surface of said substrate, wherein
- said colored layer consists essentially of a transparent layer and a coloring agent dispersed within said transparent layer and has a thickness of 10 .mu.m or less so as to transmit light,
- said transparent layer comprises a gel or glass material made from an alkoxide solution of zirconium, and
- said coloring agent contains at least one pigment having absorption peaks for visible light at selected wavelengths.
- 13. A color filter comprising a transparent substrate and colored layer formed on the surface of said substrate, wherein
- said colored layer consists essentially of a transparent layer and a coloring agent dispersed within said transparent layer and has a thickness of 10 .mu.m or less so as to transmit light,
- said transparent layer comprises a gel or glass material made from mixing a solution of alkoxide of titanium and alkoxide of silicon, and
- said coloring agent contains at least one pigment having absorption peaks for visible light at selected wavelengths.
- 14. A color filter comprising a transparent substrate and a colored layer formed on the surface of said substrate, wherein
- said colored layer consists essentially of a transparent layer and a coloring agent dissolved or dispersed within said transparent layer and has a thickness of 10 .mu.m or less so as to transmit light,
- said transparent layer comprises a gel or glass material made from an alkoxysilane solution, and
- said coloring agent contains at least one pigment having absorption peaks for visible light at selected wavelengths and is present in such an amount that said filter exhibits absorption peaks at selected wavelengths and substantially no absorption peaks at wavelengths different from the selected wavelengths.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2-101936 |
Apr 1990 |
JPX |
|
2-103479 |
Apr 1990 |
JPX |
|
Parent Case Info
This Application is a continuation of U.S. patent application Ser. No. 08/375,135 filed Jan. 18, 1995, now abandoned, which is a continuation of U.S. patent application Ser. No. 08/046,114 filed Apr. 9, 1993, now abandoned, which is a continuation of U.S. patent application Ser. No. 07/686,063 filed Apr. 16, 1991, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
55-20222 |
Feb 1980 |
JPX |
Continuations (3)
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Number |
Date |
Country |
Parent |
375135 |
Jan 1995 |
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Parent |
46114 |
Apr 1993 |
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Parent |
686063 |
Apr 1991 |
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