US5751483A
Expired / Lapsed
US
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Color filter having polarizability
Assignee: Mitsui Chemicals Inc
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Filing: 1995-08-01
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Granted: 1998-05-12
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Expires: 2015-08-01
Abstract
Abstract The present invention relates to a color filter having polarizability, which comprises a dye having a spectral transmissibility, a dichroic dye having a polarizability, corresponding to the former dye and a base resin. The filter can be produced by coating and fixing the former dye on a monochromatic polarizing film produced by using the dichroic dye; mixing the former dye, the dichroic dye and the base resin, melting and extruding the mixture to produce a film and monoaxially stretching the film; dyeing a transparent film with the former dye and the dichroic dye and then monoaxially stretching the dyed film; or dyeing a transparent monoaxially stretched film with the former dye and the dichroic dye.
Inventors
- 👤 Hisato Itoh
- 👤 Tsutami Misawa
- 👤 Akira Ogiso
- 👤 Rihoko Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:01
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/28; G02B27/288; G02B5/00; G02B5/30; G02B5/3025; G02B5/3033; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133528; G02F1/133533
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A color filter having polarizability, which comprises (a) a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, (b) a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible wavelength range of the non-dichroic dye, and (c) a base resin, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 2
Dependent Claim
106 words
A color filter having polarizability, which comprises (a) a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, (b) a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible wavelength range of the non-dichroic dye, and (c) a base resin, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 3
Dependent Claim
27 words
The color filter having polarizability according to claim 1, wherein at least one of the non-dichroic dye and the dichroic dye is contained in the base resin.
Claim 4
Dependent Claim
112 words
A process for producing a color filter having polarizability, which comprises coating and fixing a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, on a monochromatic polarizing film produced from a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of the non-dichroic dye, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 5
Dependent Claim
112 words
A process for producing a color filter having polarizability, which comprises coating and fixing a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, on a monochromatic polarizing film produced from a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of the non-dichroic dye, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 6
Dependent Claim
123 words
A process for producing a color filter having polarizability, which comprises mixing a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in color filter, a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of the non-dichroic dye and a transparent resin, subjecting the mixture to melt extrusion to obtain a film, and subjecting the film to monoaxial stretching, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 7
Dependent Claim
123 words
A process for producing a color filter having polarizability, which comprises mixing a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in color filter, a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of the non-dichroic dye and a transparent resin, subjecting the mixture to melt extrusion to obtain a film, and subjecting the film to monoaxial stretching, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 8
Dependent Claim
116 words
A process for producing a color filter having polarizability, which comprises dyeing a transparent film with a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, and a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of the non-dichroic dye, and subjecting the dyed film to monoaxial stretching, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 9
Dependent Claim
116 words
A process for producing a color filter having polarizability, which comprises dyeing a transparent film with a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, and a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of the non-dichroic dye, and subjecting the dyed film to monoaxial stretching, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 10
Dependent Claim
110 words
A process for producing a color filter having polarizability, which comprises dyeing a transparent monoaxially stretched film with a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, and a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of a non-dichroic dye, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
Claim 11
Dependent Claim
110 words
A process for producing a color filter having polarizability, which comprises dyeing a transparent monoaxially stretched film with a non-dichroic dye having a dichroic ratio less than 5 and spectral transmissibility at a wavelength range, for use in a color filter, and a dichroic dye having a dichroic ratio more than 6 and an absorption band at the transmissible range of a non-dichroic dye, wherein the non-dichroic dye and the dichroic dye are selected from the group consisting of (1) a red non-dichroic dye and a blue dichroic dye, (2) a green non-dichroic dye and a red dichroic dye, and (3) a blue non-dichroic dye and a yellow dichroic dye.
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