JPH09145909A - Color filter and color liquid crystal display device using that - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a color filter having excellent smoothness and suitable for mass production by applying a silver halide photosensitive material on a surface of a substrate opposite to the surface where a liquid crystal is applied, exposing the photosensitive material to light for patterning, color-developing and desilverizing to form a filter. SOLUTION: A silver halide photosensitive material is applied on a surface of a plastic film substrate opposite to the surface where a liquid crystal is applied. The photosensitive material is exposed to light for patterning, color- developed and desilverized to form a color filter. The substrate is required to be optically isotropic and excellent in heat resistance, dimensional stability, solvent resistance, electric insulating property, formability, low gas permeability and low moisture absorption, and for example, polyethylene terephthalate can be used. It is preferable that the silver halide photosensitive material consists of at least three silver halide emulsion layers containing couplers and having different sensitivity of colors and nonphotosensitive intermediate layers formed by coating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter formed on a plastic film substrate, and more particularly to a color filter having excellent smoothness and suitable for manufacturing, and a color liquid crystal display device using the same.

[0002]

2. Description of the Related Art Most color liquid crystal display devices (LCD) use a glass substrate, but a plastic film substrate is used for portable applications because it is lightweight and does not break. As a method for producing a color filter used for an LCD, there are a vapor deposition method, a dyeing method, a printing method, a pigment dispersion method, an electrodeposition method, a resist electrodeposition transfer method and the like. However, the color filters obtained by these methods have drawbacks such as requiring a complicated manufacturing process, easily causing pinholes and scratches, low yield, and low accuracy.

In order to solve these drawbacks, an external development method using a silver halide color light-sensitive material (see, for example, Japanese Patent Laid-open No. Sho 5).
No. 5-6342) and an inner die developing method (for example,
1488952 and 62-71950) were studied. However, it has been found that these methods have a problem that the film becomes thicker and, for example, in the manufacturing process of the LCD panel, film peeling occurs during rubbing treatment, and wire breakage easily occurs.

[0004]

SUMMARY OF THE INVENTION A first object of the present invention is to provide a color filter for a plastic film substrate which has excellent smoothness and is suitable for mass production.
A second object of the present invention is to provide a color liquid crystal display device having a color filter layer which is less likely to cause defects in the LCD panel manufacturing process and has excellent light transmittance.

[0005]

The objects of the present invention are: (1) In a color filter formed on a plastic film substrate, the color filter is provided with halogen on a surface opposite to the liquid crystal surface of the substrate. A color filter characterized by being formed by applying a silver halide light-sensitive material and subjecting it to pattern exposure, color development processing and desilvering processing. (2) The silver halide light-sensitive material contains a coupler and has different sensitivity. A color filter as described in (1) above, which comprises at least three silver halide emulsion layers having chromaticity and a non-photosensitive intermediate layer. (3) The above (1) or (2) ) Is achieved by a color liquid crystal display device provided with the color filter described above.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The plastic film substrate used in the present invention is optically isotropic and excellent in heat resistance, dimensional stability, solvent resistance, electrical insulation, processability, low air permeability, and low moisture absorption. is required. Such materials include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polystyrene, polycarbonate, polyether sulfone, polyarylate,
Allyl diglycol carbonate etc. are mentioned. A gas barrier layer or a hard coat layer may be coated on the surface of the substrate composed of these materials, if necessary. In addition, the surface of the above materials or gas barrier layer or hard
Glow discharge, corona discharge, ultraviolet ray (U
V) Treatment such as irradiation may be performed. Further, it may be subjected to an undercoat treatment for imparting hydrophilicity.

The plastic film substrate can be used in the form of a sheet or a roll. The thickness of the film substrate can be appropriately set depending on the use and the material, but is generally 0.05 to 0.3 mm.

In the present invention, a color filter layer is provided on the side of the plastic film substrate opposite to the liquid crystal cell.
The color filter used in the present invention is particularly effective when it is prepared using a silver halide photosensitive material. Color filters made using a silver halide light-sensitive material have a larger film thickness of 4 to 20 μm than those made by a pigment dispersion method, a dyeing method, etc. Further, since gelatin is mainly used as a binder, When it is installed on the liquid crystal cell side, there is a problem that the step of the edge portion becomes large and it is easy to absorb moisture, so that the wiring is easily broken, and the humidity change of the environment easily affects the liquid crystal cell. In the present invention using a plastic film substrate, the thickness is about an order of magnitude smaller than that of the glass substrate (thickness is 0.3 to 1.5 mm). However, the silver halide photosensitive material is thinner than that of the film substrate. It was found that the color filter layer prepared by using (1) was thinner by about an order of magnitude, and therefore, even if the color filter layer was provided on the opposite side, there was almost no adverse effect, and the above-mentioned problems could be improved.

The silver halide light-sensitive material used in the present invention and the processing method will be described. The following are preferred as the photosensitive material that can be used in the present invention. They are an external color reversal film capable of obtaining a positive image by color reversal processing, an internal color reversal film, a color negative film by color negative processing, a display color film, an auto positive color film and the like. About these, Science Photo Handbook (above) (Maruzen) pp. 559-5
64 pages, 569 pages, The Theory of the Photograph
ic Process) 4th edition, TH James edition etc. In addition, as described in JP-A-63-261361, an inner type color light-sensitive material containing two or more kinds of couplers having different hues obtained by color development in the same light-sensitive silver halide emulsion layer, and the same as those described in JP-A-63-261361. As described in No. 79701, it is also possible to use an external color light-sensitive material which is developed by using a developer containing two or more kinds of couplers showing different colors with respect to the same photosensitive silver halide and a developing agent. Furthermore, Japanese Patent Application Nos. 6-84315 and 6-1.
No. 55726, No. 7-122733, No. 7-1815.
The color filter light-sensitive material described in No. 75 can also be used.

Gelatin is advantageously used as the binder or protective colloid that can be used in the silver halide emulsion layer, intermediate layer and protective layer of the light-sensitive material of the present invention, but other hydrophilic polymers are also used. be able to. As the hydrophilic polymer, for example, polyvinyl alcohol, polyvinyl alcohol partial acetal, polyvinyl butyral, poly-N-vinylpyrrolidone, polyacrylic acid, polyacrylamide, polyvinyl imidazole,
Polyvinyl pyrazole, carrageenan, gum arabic,
Further examples include homo- or copolymers of hydroxyalkyl cellulose, carboxymethyl cellulose, cellulose sulfate, cellulose acetate hydrogen phthalate and cellulose derivatives such as sodium alginate. Also, a graft polymer of gelatin and another polymer may be used. Examples of the gelatin-graft polymer include gelatin, acrylic acid, methacrylic acid, derivatives thereof such as esters and amides, and vinyl monomer such as acrylonitrile and styrene. Those grafted with one or a copolymer can be used. In particular, polymers that are somewhat compatible with gelatin, such as acrylic acid, methacrylic acid, acrylamide, methacrylamide,
A graft polymer with a polymer such as hydroxyalkyl methacrylate is preferred. Examples of these are US Pat.
No. 763,625, No. 2,831,767, No. 2,9
No. 56,884 and JP-A-56-65133. Representative synthetic hydrophilic polymer substances are described in, for example, West German Patent Application (OLS) 2,312,708, U.S. Pat. Nos. 3,620,751, 3,879,205, and JP-B-43-7561. Those described may also be used. The above hydrophilic polymers may be used alone or in combination of two or more.

As gelatin, alkali treatment, acid treatment,
What was subjected to any of the enzyme treatments, or a mixture thereof may be used. It is also obtained by reacting gelatin with various compounds such as acid halides, acid anhydrides, isocyanates, bromoacetic acid, alkane salutonic acids, vinylsulfonamides, maleimide compounds, polyalkylene oxides, and epoxy compounds. Gelatin derivatives are also used. Specific examples of gelatin derivatives are described in U.S. Pat. Nos. 2,614,928, 3,132,945, 3,186,846, 3,312,553, British Patents 861,414 and 1,033. , 189, 1,005,784, and JP-B-42-26845. In the present invention, since the above-mentioned binder plays a role of air resistance, it is not always necessary to separately install the gas barrier layer.

The total amount of binder in the light-sensitive material used in the present invention is preferably from 3 to 10 g / m ² , particularly from 3.5 to 7 because it is necessary to make the thickness of the color filter as thin as possible.
g / m ² are preferred. The amount of binder in each silver halide emulsion layer is preferably 0.3 to 1.5 g / m ² , particularly 0.35.
~1.0g / m ² is preferred. The amount of binder in each intermediate layer or protective layer is preferably 0.1 to 1.5 g / m ² , and particularly preferably 0.1.
2-1.0 g / m ² is preferred.

The silver halide grains usable in the light-sensitive material of the present invention are silver chloride, silver bromide, silver iodochloride, silver chlorobromide and silver iodobromide. The silver iodide content is preferably 2 mol% or less, more preferably 1 mol% or less. More preferably, it is 0.5 mol% or less. The silver halide emulsion used in the present invention may be a surface latent image type or an internal latent image type. The internal latent image type emulsion is used as a direct reversal emulsion in combination with a nucleating agent or light fogging. The crystal structure may be uniform or may be multi-structured particles having different halogen compositions inside and on the surface of the particle. Further, silver halides having different compositions may be bonded by epitaxial bonding, and further, a compound other than silver halide, such as, for example, silver rhodan or lead oxide may be bonded. In particular, in the high silver chloride emulsion used in the present invention, a structure having a silver bromide localized phase in a layered or non-layered form inside and / or on the surface of silver halide as described above is also used. it can. The halogen composition of the localized phase preferably has a silver bromide content of at least 20 mol%, and more preferably exceeds 30 mol%. The silver bromide content of the silver bromide localized phase is analyzed by an X-ray diffraction method or the like. For example, Photographic Science and Technology by CR Berry, SJ Marino
ic Science and Technology) Volume 2, 149 (1955)
Also, Vol. 4, p. 22 (1957) describes a method of applying the X-ray diffraction method to silver halide grains. The silver bromide localized phase can be inside the grain, at the edge, corner, or on the surface of the grain, but a preferred example is one that is epitaxially bonded to the corner of the grain.

The average grain size of the silver halide grains used in the present invention is preferably 0.05 to 0.9 .mu.m, and more preferably 0.1 to 0.9 .mu.m in order to obtain a high development activity with a low silver content and a large specific surface area. .About.0.5 .mu.m is preferred. In the case of tabular grains, the thickness is preferably 0.05 to 0.9 μm, and particularly preferably 0.
1 to 0.5 μm is preferred. Monodisperse emulsions having a narrow grain size distribution may be used. Monodisperse emulsions, for example,
It is a silver halide emulsion having a grain size distribution such that 80% or more of all grains fall within ± 30% of the average grain size in terms of the number or weight of grains. It is preferable to use a monodisperse silver halide emulsion having a coefficient of variation of 20% or less, particularly 15% or less. Polydisperse emulsions having a wide grain size distribution may be used.

The silver halide emulsion which can be used in the present invention is
For example, Research Disclosure (RD), 17
Volume 6 No.17643 (December 1978), 22-23
Page, "I. Emulsion Preparation and type
s) ", and No. 18716 (November 1979)
Mon), p. 648, Grafkid, "Physics and Chemistry of Photography",
Published by Paul Montell (P. Glafkides, Chemic et Phisique
Photographique, (Paul Montel, 1967), "Photoemulsion Chemistry" by Duffin, published by Focal Press (GFDu
ffin, Photographic Emulsion Chemistry, (Focal Pres
e, 1966)), "Production and Coating of Photographic Emulsions" by Zelikmann et al., published by Focal Press (VLZelikman et al,
Making and Coating Photographic Emulsion, (Focal Pr
ess, 1964)). Further, the internal latent image type emulsion and silver halide grains which can be used for the direct positive light-sensitive material such as the auto positive color film of the present invention are disclosed in JP-A-63-
81, JP-A 1-282545 and the like. The internal latent image type emulsion may be a core / shell type or a conversion type, but a core / shell type emulsion is preferred.

US Pat. Nos. 3,574,628 and 3,
655,394 and British Patent 1,413,748.
Monodisperse emulsions described in Nos. 1 and 2 are also preferred. Tabular grains having an aspect ratio of about 5 or more can also be used in the present invention. Tabular grains are described by Gaft, Photographic Science and Engineering (Gutoff,
Photographic Science and Engineering), Volume 14,
248-257 (1970): U.S. Patent No. 4,43
4,226, 4,414,310, 4,43
It can be easily prepared by the methods described in 3,048, 4,439,520 and British Patent 2,112,157. Also, a mixture of particles of various crystal forms may be used.

The photosensitive silver halide emulsion is usually a chemically sensitized silver halide emulsion. For the chemical sensitization of the photosensitive silver halide emulsion of the present invention, a sulfur sensitized layer known in emulsions for conventional photosensitive materials, selenium sensitization, chalcogen sensitization such as tellurium sensitization, gold, platinum, A noble metal sensitization method and a reduction sensitization method using palladium or the like can be used alone or in combination (for example, see JP-A-3-110,55).
No. 5, Japanese Patent Application No. 4-75,794). These chemical sensitizations can also be carried out in the presence of a nitrogen-containing heterocyclic compound (JP-A-62-253159). Further, an antifoggant described later can be added after the completion of the chemical sensitization. Specifically, JP-A-5-45,833 and JP-A-62-4
0,446 can be used. The pH at the time of chemical sensitization is preferably 5.3 to 10.5, more preferably 5.5 to 8.5, and the pAg is preferably 6.0.
１10.5, more preferably 6.8 to 9.0. The coating amount of the photosensitive silver halide emulsion used in the present invention is in the range of 1 mg to 10 g / m ² in terms of silver.

In order to provide the photosensitive silver halide used in the present invention with green-sensitive, red-sensitive and infrared-sensitive color sensitivity, the photosensitive silver halide emulsion is spectrally sensitized with a methine dye or the like. . If necessary, the blue-sensitive emulsion may be subjected to spectral sensitization in the blue region. Dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes, and hemioxonol dyes. Specifically, U.S. Pat.
617,257, JP-A-59-180,550, JP-A-64-13,546, JP-A-5-45,828 and JP-A-5-45,834. These sensitizing dyes may be used alone, or a combination thereof may be used. The combination of sensitizing dyes is often used particularly for the purpose of supersensitization or wavelength adjustment of spectral sensitivity. Along with the sensitizing dye, a dye having no spectral sensitizing effect itself or a compound that does not substantially absorb visible light and exhibits supersensitization may be contained in the emulsion (for example, US Pat. 615, 641 and those described in JP-A-63-23, 145). These sensitizing dyes may be added to the emulsion at or before or after chemical ripening, or according to U.S. Pat. Nos. 4,183,756 and 4,225,666 before and after nucleation of silver halide grains. Good. These sensitizing dyes and supersensitizers may be added as a solution of an organic solvent such as methanol, a dispersion of gelatin or the like, or a solution of a surfactant. The addition amount is generally from 10 ^-8 to 10 per mol of silver halide.
^-2 moles.

The additives used in such a process are described in RD No. 17, 643, No. 18, 716 and No. 307, 105, and the corresponding portions are shown in the table below. Put together. Types of additives RD17643 RD18716 RD307105 1 Chemical sensitizer, page 23, page 648, right column, page 866 2 Sensitivity enhancer, page 648, right column 3, spectral sensitizer, page 23-24, page 648, right column, page 866-868, supercolor enhancement Sensitizer page 649 right column 4 optical brightener page 24 648 page right column 868 page 5 antifoggant, page 24-25 page 649 right column page 868-870 stabilizer 6 light absorber, page 25-26 page 649 Right column to page 873 Filter, page 650 Left column UV absorber 7 Dye image stabilizer 25 page 650 page left column 872 8 Hardener 26 pages 651 page left column 874 to 875 page 9 Binder 26 page 651 left column 873 to 875 10 Plasticizers / lubricants 27 pages 650 right column 876 11 Coating aids, surface 26 to 27 pages 650 right column 875 to 876 Activator 12 Stachi Page 27 page 650 right column 876 to 877 inhibitor

The color developing agent which can be used in the present invention includes cyan, magenta, and cyan, magenta, which are formed by the oxidation reaction of the developing agent produced by developing silver halide by coupling reaction with the coupler.
Any dye capable of forming dyes such as yellow, red, green, and blue may be used, and it is known in the photographic industry. A specific example of color developer is TH James “The Theory of the Photographic
Process ", 4th edition, pages 291-334 and 353-36.
1 page, RD No.17643 (December 1978), 28
Pp. 29, No. 18716 (November 1979), 6
It is described on page 51 and the like. Particularly preferred color developers are p-phenylenediamine derivatives.

The coupler which can be used in the present invention is an external type coupler which has a diffusion resistant group and is contained in the photosensitive layer even if it is an external type coupler which is dissolved in a color developing solution together with the above-mentioned developing agent. It may be a coupler. Specific examples of the outer type coupler are described in JP-A-55-6342 and 64-79701.
No. etc. In the present invention, it is preferable that a coupler is incorporated in the light-sensitive material (that is, an inner coupler) in the light-sensitive material and the development is carried out by an inner developing method in order to facilitate the development processing.
The inner type coupler used in the present invention has a hydrogen atom substituted at the active position with a leaving group rather than a 4-equivalent color coupler.
Equivalent color couplers are preferable because the amount of coated silver can be reduced.

A typical example of the yellow coupler which can be used in the present invention is an oil protect type acylacetamide type coupler. Specific examples thereof are described in U.S. Pat. Nos. 2,407,210, 2,875,057 and 3,265,506. In the present invention, it is preferable to use a two-equivalent yellow coupler, and US Pat. Nos. 3,408,194 and 3,44.
No. 7,928, No. 3,935,501 and No. 4,022,620, or an oxygen atom-releasing yellow coupler or JP-B-58-10739.
Nos. 4,401,752 and 4,32
6,024, RD18053 (April 1979), British Patent No. 1,425,020, West German Application Publication No. 2,2.
No. 19,917, No. 2,261,361, No. 2,
Typical examples thereof include nitrogen atom-releasing yellow couplers described in JP-A Nos. 329,587 and 2,433,812. α-pivaloylacetanilide couplers are excellent in the fastness of coloring dyes, especially light fastness, while α-benzoylacetanilide couplers provide high color density.

Examples of the magenta coupler which can be used in the present invention include oil-protected type, preferably 5-pyrazolone type and pyrazoloazole type couplers such as pyrazolotriazoles. As the 5-pyrazolone coupler, a coupler in which the 3-position is substituted with an arylamino group or an acylamino group is preferable from the viewpoint of the hue and color density of the coloring dye, and typical examples thereof are described in US Pat.
No. 1,082, No. 2,343,703, No. 2,6
No. 00,788, No. 2,908,573, No. 3,
Nos. 062,653, 3,152,896 and 3,936,015. As the leaving group of the 2-equivalent 5-pyrazolone coupler, a nitrogen atom leaving group described in U.S. Pat. No. 4,310,619 or an arylthio group described in U.S. Pat. No. 4,351,897 is particularly preferred. European Patent No. 73,63
The 5-pyrazolone-based coupler having a ballast group described in No. 6 provides high color density.

As the pyrazoloazole type coupler, pyrazolobenzimidazoles described in US Pat. No. 3,369,879, preferably US Pat. No. 3,725,06.
No. 7, pyrazolo [5, 1-c] [1, 2,
4] Triazoles, Research Disclosure 2
4220 (June 1984) pyrazolotetrazoles and Research Disclosure 24230
(June 1984). The imidazo [1,2-b] pyrazoles described in European Patent No. 119,741 are preferable in view of the small yellow sub-absorption of the color forming dye and the light fastness, and the pyrazolo compounds described in European Patent No. 119,860 are preferable. [1,5-b]
[1,2,4] triazole is particularly preferred.

Cyan couplers that can be used in the present invention include US Pat. Nos. 2,474,293 and 4,05.
No. 2,212, No. 4,146,396, No. 4,2
Naphthol-based couplers described in U.S. Pat. No. 3,771 and No. 4,233,200;
Phenol cyan couplers having an alkyl group at the meta-position of the phenol nucleus with an ethyl group or more described in U.S. Pat.
No. 58,308, No. 4,126,396, No. 4,
Nos. 334,011, 4,327,173, West German Patent Publication No. 3,329,729 and Japanese Patent Publication No. 3-181.
No. 75, etc. and 2,5-diacylamino-substituted phenolic couplers and U.S. Pat. No. 3,446,62.
No. 2, No. 4,333,999, No. 4,451,5
And phenol couplers having a phenylureido group at the 2-position and an acylamino group at the 5-position as described in JP-A-59-59 and JP-A-4,427,767.
Especially as a coupler excellent in heat resistance and light resistance, Japanese Patent Application Hei 6
-84315 are preferred and can be used in the present invention. In the present invention, the following various couplers can be used in addition to the above-mentioned couplers. Typical examples of polymerized dye-forming couplers are described in U.S. Pat.
Nos. 80,211 and 4,367,282 and British Patent No. 2,102,173. Couplers that release a photographically useful residue upon coupling can also be preferably used in the present invention. DIR couplers releasing a development inhibitor are described in the aforementioned RD17643, the patents described in VII to F, JP-A-57-151944, and JP-A-57-151944.
Preferred are those described in US Pat. Nos. 7,154,234 and 60-184248, and U.S. Pat. No. 4,248,962. Examples of couplers which release a nucleating agent or a development accelerator in an image-like manner during development include British Patent 2,097,140.
No. 2,131,188, JP-A-59-1576.
Nos. 38 and 59-170840 are preferred.

Other couplers that can be used in the light-sensitive material of the present invention include US Pat. No. 4,130,42.
Competitive couplers described in US Pat.
No. 472, No. 4,338,393, No. 4,310,
No. 618, etc .;
5950 and the like, and couplers that release a dye that recolors after release described in EP 173,302A, and the like. When the light-sensitive material described in Japanese Patent Application No. 6-155726 is applied to the present invention, even if the coupler for black correction does not develop yellow, magenta, and cyan, for example, brown, orange, purple, black, etc. It may be one that develops color.

In the present invention, the equivalent ratio of silver halide to coupler in each silver halide emulsion layer is preferably 1 or more and 3 or less. In particular, when a silver halide emulsion having an average grain size (defined as a thickness in the case of tabular grains) of 0.9 μm or less, particularly 0.5 μm or less, is preferably 1 to 2 inclusive.
The term "equivalent ratio" as used herein means that the theoretical amount of silver halide required for color development of all couplers is an equivalent ratio of 1, and for example, in the case of coating twice the theoretical amount of silver halide, the equivalent ratio is 2
It is. That is, when a 2-equivalent coupler is used, the equivalent ratio is 1 when the coated silver amount is 2 mols per 1 mol of the coupler, and the equivalent ratio is 2 when the coated silver amount is 4 mols.

The couplers used in the present invention can be introduced into the light-sensitive material by various known dispersion methods. Examples of high boiling solvents used in the oil-in-water dispersion method are described in US Pat.
No. 2,027. The amount of the high boiling point solvent is 10 g or less, preferably 5 g or less, more preferably 1 g to 0.1 g per 1 g of the coupler. In addition, 2 g or less, preferably 1 g or less for 1 g of the binder,
More preferably, it is 0.5 g or less. The size of the coupler dispersion (coupler emulsion) obtained by the oil-in-water dispersion method is 0.05 μm to 0.9 μm, preferably 0.1 μm to
It is 0.5 μm.

The steps, effects, and specific examples of the latex for impregnation in the latex dispersion method are described in US Pat. No. 4,199,
363, West German Patent Application (OLS) No. 2,541,27
No. 4 and No. 2,541,230. In the light-sensitive material according to the present invention, it is preferable to use a color image storability improving compound as described in EP 0,277,589 A2 in a layer containing a coupler. In particular, combination use with a pyrazoloazole-based magenta coupler is preferable.

That is, the compound (F) which reacts with the aromatic amine-based developing agent remaining after the color development processing to form a chemically inactive and substantially colorless compound and / or remains after the color development processing. The use of a compound (G) which reacts with an oxidized product of an aromatic amine-based developing agent to form a chemically inactive and substantially colorless compound, simultaneously or alone, is effective in, for example, storage after processing. It is preferable in order to prevent the occurrence of stains and other side effects due to the formation of a coloring dye by the reaction of the coupler with the color developing agent remaining in the film or its oxidant.

As the dye image-forming compound used in the light-sensitive material for the color filter of the present invention, in addition to the above-mentioned color coupler, a diffusible dye corresponding to the reaction of reducing silver halide to silver or vice versa. Diffusion-resistant dye-donor compounds that release are mentioned. Specific examples of such dye donating compounds are disclosed in JP-A-59-185333 and JP-A-63-20.
1653, European Patent EP220,746B, US Pat. Nos. 4,500,626 and 4,639,408,
4,783,396, 4,232,107, 4,619,884, 4,450,223, 4,503,137, 4,559,290, etc. Has been done. A light-sensitive material containing such a dye-donating compound in the present invention is disclosed in US Pat. No. 3,923,510.
, West German Patent OLS-2,916,582, JP-A-5
It is possible to form a color filter with the dye-donor compound which is processed according to the method described in Japanese Patent Application No. 4-143230, Japanese Patent Application No. 5-205554, etc. and remains in the light-sensitive material.

The silver halide emulsion layer, intermediate layer, etc. of the light-sensitive material of the present invention contains a hydroquinone derivative, an aminophenol derivative, a gallic acid derivative, an ascorbic acid derivative, etc. as a color antifoggant or color mixing inhibitor. May be. Among these compounds, those which hardly generate stain even when heated to 160 to 200 ° C. are preferable.

Further, in order to prevent deterioration of the cyan dye image due to heat and especially light, it is more effective to introduce an ultraviolet absorber into the cyan coloring layer and the layers on both sides adjacent thereto. As the ultraviolet absorber, a benzotriazole compound substituted with an aryl group (for example, those described in US Pat. No. 3,533,794), a 4-thiazolidone compound (for example, US Pat. No. 3,314,794 and No. 3,352,681), benzophenone compounds (for example, those described in JP-A-46-2784), cinnamic acid ester compounds (for example, US Pat. No. 3,705,805 and the same). No. 3,707,395), butadiene compounds (for example, US Pat. No. 4,
045,229) or a benzoxazole compound (for example, US Pat. No. 3,406,070).
No. 4,271,307). Ultraviolet absorbing couplers (for example, α-naphthol type cyan dye forming couplers) and ultraviolet absorbing polymers may be used. These ultraviolet absorbers may be mordanted to a specific layer. Above all, a benzotriazole compound substituted with the above aryl group is preferable.

In order to prevent various molds and bacteria which propagate in the hydrophilic colloid layer and deteriorate the image, the light-sensitive material according to the present invention has an antibacterial agent as described in JP-A-63-271247. It is preferable to add a fungicide.

The light-sensitive material used in the present invention is the RD.
No. 17643, pp. 28-29, and No. 1871
No. 6, 651, left column to right column, etc., are subjected to color development processing to obtain a micro color filter. Further, a pre-hardening treatment or a post-hardening treatment may be performed.

For example, a color development processing step, a desilvering processing step, and a water washing processing step are carried out. In the desilvering step, instead of the bleaching step using a bleaching solution and the fixing step using a fixing solution, a bleach-fixing step using a bleach-fixing solution can be performed. The bleach-fix processing steps may be combined in any order. A stabilizing step may be performed instead of the water washing step, or a stabilizing step may be performed after the water washing step. Further, a monobath processing step using a one-bath development bleach-fix processing solution in which color development, bleaching and fixing are performed in one bath can also be performed. In combination with these processing steps, a pre-hardening processing step, a neutralization step thereof, a stop fixing processing step, a post-hardening processing step, an adjustment step, an intensification step, and the like may be performed. In these processes, a so-called activator process may be performed instead of the color development process.

When a direct positive type color light-sensitive material is used in the present invention, an aromatic primary amine type color developing agent is used after imagewise exposure and after or while being fogged with a light or a nucleating agent. Including, preferably pH 12 or less,
It is preferable to directly form a positive color image by color development, bleaching and fixing treatment with a surface developer. The pH of this developer is more preferably in the range of 11.0 to 10.0.

The fogging treatment which can be used in the present invention includes a method of giving a second exposure to the entire surface of the photosensitive layer, which is so-called "light fogging method", and a development in the presence of a nucleating agent, which is called "chemical fogging method". Either of the processing methods may be used. Development processing may be performed in the presence of a nucleating agent and fog light. Further, fog exposure may be performed on a photosensitive material containing a nucleating agent.

Regarding the optical fogging method, the above-mentioned Japanese Patent Laid-Open No. 63-63
No. 81313, page 33, line 17 to page 35, last line, and the nucleating agent that can be used in the present invention is described on pages 50 to 53 of the specification, particularly the same specification. It is preferable to use the compounds represented by the general formulas [N-1] and [N-2].

Regarding the nucleation accelerator that can be used in the present invention,
It is described on pages 54 to 57 of the same specification, and specific examples thereof include (A-1) described on pages 55 to 57 of the same.
To (A-13) are preferred.

The film thickness of the color filter light-sensitive material of the present invention is preferably 20 μm or less in the case of the inner type, and particularly 5 to 15
μ is more preferred. In the case of external photosensitive material, 15μ
The following is preferable, and 3 to 10 μm is particularly preferable.

The exposure method applied to the present invention includes a surface exposure method through a mask and a scanning exposure method. Scanning method is line (slit)
A point scanning method such as scanning or laser exposure can be applied. As the light source, a tungsten lamp, a halogen lamp, a fluorescent lamp, a mercury lamp (such as a three-wavelength fluorescent lamp), a laser beam, or a light emitting diode is used. Particularly, a halogen lamp, a fluorescent lamp, and a laser beam are preferable.

Since the color filter layer formed as described above has substantially sufficient air resistance, it can also serve as a gas barrier layer. However, since the moisture absorption resistance is insufficient even after the hardening treatment, it is desirable to provide an overcoat layer. The overcoat layer has heat resistance, water resistance, solvent resistance,
The resin is formed of a resin having a high specific electrical resistivity. Examples of such a resin include U.S. Pat.
668,601, European patent application EP-179,636.
A, 556,810A, JP-A-3-163416
Nos. 3-188153, 5-78443, 1
-276101, JP-A-60-216307, 6
Those described in, for example, JP-A-3-218771 can be used.

On the other hand, it is desirable to provide an undercoat layer on the side opposite to the color filter layer of the film substrate for the purpose of improving the adhesion between the film and ITO or improving the solvent resistance. Transparent electrode (IT
O) and its wiring. ITO is formed into a film by a usual sputtering method, an ion plating method or the like, and its electric resistance value is 500 Ω / cm ² , preferably 50 Ω / cm ² or less. Furthermore, an alignment film of polyimide resin or the like can be provided on the ITO.

For details of the color liquid crystal display (LCD) and its manufacturing method, refer to Shoichi Matsumoto and Ichino Tsunoda, "Basics and Applications of Liquid Crystals" (published by the Industrial Research Committee in 1991), Japanese Microdevices, "Flat." Panel display 19
94 "(published by Nikkei BP, 1993);
No. 4820 and the like.

[0046]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited thereto. Example 1 An optically isotropic polycarbonate substrate having a thickness of 80 μm was coated with a hard coat layer on one side, and the opposite side was subjected to corona discharge treatment to improve adhesion with a photographic emulsion layer. Two layers, an SBR latex layer and a gelatin layer, were applied. A first layer to a seventh layer having the structure described in Example 1 of JP-A-7-159610 were simultaneously coated in multiple layers to prepare a color light-sensitive material 101. Then, by performing the exposure and development processing in the operation described in Example 1, RGB and K
A color filter that developed color (black matrix part) was obtained. The obtained color filter layer was coated with the above resin for imparting moisture absorption resistance to form an overcoat layer (protective layer). FIG. 1 shows an example of a schematic sectional view of a liquid crystal display (LCD) using this color filter. An inorganic oxide (SiNx + SiOx) by a sputtering method and a transparent electrode 4 (ITO electrode) by a vacuum film forming method are provided as an undercoat layer 3 on the hard coat layer 2 of the polycarbonate substrate 1. The transparent electrode 4 is formed as a front integrated electrode in an active matrix drive LCD using a three-terminal switching array such as a TFT, and is used as a simple matrix drive LCD or MIM.
It is usually formed as a stripe electrode in an active matrix driving LCD using a two-terminal switching array. An alignment layer 5 made of polyimide or the like for aligning liquid crystal molecules is arranged on the transparent electrode 4. On the other hand, the hard coat layer 9 and the under coat layer 1 are similarly formed on the polycarbonate substrate 8 on the opposite side with the liquid crystal layer 6, the spacer (not shown) and the sealing material 7 interposed therebetween.
0, the transparent electrode 11 (ITO electrode) and the alignment layer 5 are arranged. The transparent electrode 11 is an active matrix drive LCD using a three-terminal switching array such as a TFT.
Is a pixel electrode connected by a TFT element, and is a normal stripe electrode in a simple matrix drive LCD such as STN, and is arranged orthogonal to the transparent electrode 4. A gas barrier layer 17 is arranged on the surface of the polycarbonate substrate 8 opposite to the liquid crystal surface. Polarizing plates 12 and 13 are provided on the back surfaces of the polycarbonate substrates 1 and 8. A phase compensation film (not shown) may be provided between each substrate and the polarizing plate. Furthermore, the polarizing plate 1
A reflector 14 is installed on the outer side of 3. The color filter layer 15 can also be installed on the substrate 8 on the side of the reflection plate 14.

Example 2 Instead of the polycarbonate substrate used in Example 1, an optically isotropic polyethylene naphthalate substrate having a thickness of 80 μm was used, and a hard coat layer was coated on one side, and the other side was coated. Is a color light-sensitive material 20 prepared by applying an undercoat and a light-sensitive layer as described in Example 2 of Japanese Patent Application No. 6-84315.
3 was created. Then, it is exposed by the operation described in Example 2,
By performing development processing, color filters that developed RGB and K (black matrix portion) were obtained. An overcoat layer (protective layer) was applied on the obtained color filter layer. LCD having the same configuration as that of the first embodiment
Was prepared.

[0048]

The color filter formed by pattern exposure, color development and desilvering of a silver halide photosensitive material on the surface of the plastic film substrate opposite to the liquid crystal surface is excellent in smoothness, It was suitable for production and the pixel pattern was clear. Moreover, when the transparent electrode is installed, there is no inconvenience such as film peeling during the rubbing process, and there is no fear of disconnection in connection with the driver, and a color liquid crystal display device can be manufactured.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of a color liquid crystal display device using a color filter of the present invention.

[Explanation of symbols]

1, 8 ... Plastic film substrate, 2, 9 ... Hard coat layer, 3, 10 ... Undercoat layer, 4, 11 ... Transparent electrode, 5 ...・ Alignment layer, 6 ・ ・ ・ ・ Liquid crystal layer, 7 ・ ・ ・ ・ Seal material, 12, 13 ・ ・ ・ Polarizing plate, 14 ・ ・ ・ ・ Reflector plate, 15 ・ ・ ・ ・ ・ ・RGB color filter layer (including black matrix), 16 --- overcoat layer, 17 --- gas barrier layer

Claims (3)

[Claims] 1. A color filter formed on a plastic film substrate, wherein the color filter is coated with a silver halide light-sensitive material on the surface opposite to the liquid crystal surface of the substrate, and is subjected to pattern exposure and color development. A color filter formed by a development process and a desilvering process. 2. The silver halide light-sensitive material is characterized in that at least three silver halide emulsion layers containing a coupler and having different color sensitivities, and a non-light-sensitive intermediate layer are coated. The color filter according to claim 1. 3. A color liquid crystal display device provided with the color filter according to claim 1.