JP3120891B2 - Manufacturing method of color filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a color filter, and more particularly, to a method for manufacturing a color filter used for a flat display such as a liquid crystal display, an imager such as a CCD, or a color sensor with high accuracy and efficiency. The present invention relates to a method of manufacturing a color filter which can be easily obtained.

[0002]

2. Description of the Related Art For example, a color filter in which fine stripes of a plurality of colors are formed on a transparent substrate is mounted on an image pickup tube of a color video camera.

[0003] In a liquid crystal display (LCD), a color filter is used in both an active matrix system and a simple matrix system in order to respond to recent demands for colorization. For example, in an active matrix type liquid crystal display using a thin film transistor (TFT), three primary colors of red (R), green (G), and blue (B) are used as color filters, and each pixel of R, G, and B is used. The liquid crystal operates as a shutter by turning on and off the electrodes corresponding to the above, and light is transmitted through each of the R, G, and B pixels to perform color display. The color mixing is visually performed on the retina by the principle of additive color mixing in which liquid crystal shutters corresponding to pixels of two or more colors are opened and mixed to show different colors.

[0004] The color filters used as described above have been conventionally manufactured by means such as a dyeing method and a dispersion method. Here, the production of a color filter by a dyeing method is performed, for example, as follows.

That is, a coating solution obtained by adding a photosensitive agent such as dichromate to a hydrophilic resin such as gelatin, casein or polyvinyl alcohol is applied onto a transparent glass substrate by a spin coating method or the like. Exposure / development is performed using the mask described above, and then dyed with a dye to form a first colored layer. Thereafter, an anti-dye layer is provided on the first colored layer to prevent double dyeing, and then a second colored layer and a third colored layer are formed in the same manner as the formation of the first colored layer. As a result, R, G,
A color filter including each of the colored layers B can be obtained.

The production of a color filter using the dispersion method is performed, for example, as follows. That is,
A photosensitive liquid in which a coloring agent such as an organic pigment or an inorganic pigment is dispersed in a transparent photosensitive resin is applied on a transparent glass substrate to form a photosensitive resin layer. Next, a mask having an opening pattern of a predetermined shape is placed on the photosensitive resin layer, and exposure and development are performed to form a first colored layer. Similarly, a second color layer and a third color layer are formed to obtain a color filter having R, G, and B color layers.

[0007]

However, in the dyeing method, a color filter having a rich color tone and excellent resolution is obtained, but on the other hand, the dyeing is carried out so that the already colored portion is not dyed twice during the dyeing. There is a problem in that the steps are complicated and the manufacturing cost is increased because it is necessary to take measures. Further, since a dye is used as a coloring agent, there is a problem that heat resistance, chemical resistance, light resistance and the like are inferior.

In the dispersion method, it is possible to form a fine pattern having high heat resistance and light resistance, but it is necessary to perform a photolithography process every time the color is changed, and the process is complicated. There is a problem that it is difficult to reduce the manufacturing cost.

[0009] From such a background, a printing method has been proposed as a method of manufacturing a color filter capable of simultaneously realizing low cost and mass production and also having a large screen. Conventionally proposed printing methods include offset methods such as lithographic offset printing and intaglio offset printing, screen printing methods, and flexographic printing methods.

However, in the printing method, there is a problem that the printing shape is deteriorated due to the thickening or thinning of the pixels and the occurrence of pinholes, and it is particularly difficult to reproduce a fine pattern. In addition, especially because the thickness of the thin wire cannot be taken sufficiently,
For example, it is not suitable for the production of a color filter having a colored pattern requiring a light shielding property such as a black matrix. Therefore, when manufacturing a color filter having a high-quality black matrix,
It was necessary to form a black matrix by an expensive chromium vapor deposition method or the like. Furthermore, in the conventional printing method, when transferring the ink from the blanket to the glass substrate, only a part of the ink is transferred, so that a division occurs in the ink layer and the ink surface after printing is not smooth. was there. Furthermore, if the printing is continued continuously due to the unstable process, there is a problem that the printed film thickness changes and the printed shape deteriorates.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and is intended to provide a highly accurate and efficient color filter used for a flat display such as a liquid crystal display, an imager such as a CCD, or a color sensor. An object of the present invention is to provide a method for manufacturing a color filter that can be obtained.

[0012]

In order to achieve the above object, the present invention provides a method in which a photosensitive material which exhibits tackiness by exposure is coated on a transparent glass substrate to form a photosensitive layer. Exposing the photosensitive layer with the pattern described above and adhering a colored powder material containing a silane-modified resin having an adhesive property to the transparent glass substrate to the exposed portion to form a colored pattern; A colored layer was formed by repeating the heat treatment, and then a heat treatment was performed.

[0013]

The photosensitive layer formed on the transparent substrate is exposed to light in a predetermined pattern to exhibit tackiness on the exposed portion, and a colored powder material is attached to the exposed portion to form a colored pattern. By repeating, a colored layer composed of a required colored pattern of a plurality of colors is formed, and then a heat treatment is performed. The colored powder materials of the transparent glass
Since it contains a silane-modified resin binder that has adhesiveness to the glass substrate, the colored powder material constituting the colored layer is maintained in a good adhesion state to the transparent substrate, thereby making it possible to produce a color filter capable of forming a fine pattern. In addition, the process of the color filter is simplified, and the manufacturing cost can be reduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of an active matrix type liquid crystal display (LCD) using a color filter manufactured according to the present invention, and FIG. 2 is a schematic sectional view of the same. 1 and 2, an LCD 1 includes a color filter 10 and a transparent glass substrate 2.
0 through a seal member 30, and a thickness of about 5 to 10 μm made of twisted nematic (TN) liquid crystal therebetween.
Of the liquid crystal layer 40, and the color filter 1
The polarizers 50 and 51 are provided outside the transparent glass substrate 20 and the transparent glass substrate 20.

FIG. 3 is an enlarged partial sectional view of the color filter 10. The color filter 10 includes a transparent substrate 12 and a black matrix 14 formed on the transparent substrate 12.
, A colored layer 16, a protective layer 18 provided to cover the black matrix 14 and the colored layer 16, and a transparent common electrode 19. The color filter 10 is disposed such that the transparent common electrode 19 is located on the liquid crystal layer 40 side. The coloring layer 16 includes a red pattern 16R, a green pattern 16G, and a blue pattern 16B, and the arrangement of the coloring patterns is a mosaic arrangement as shown in FIG. Note that the arrangement of the colored patterns is not limited to this, and may be a triangular arrangement, a stripe arrangement, or the like.

A display electrode 22 is provided on the transparent glass substrate 20 so as to correspond to each of the colored patterns 16R, 16G, and 16B. Each display electrode 22 has a thin film transistor (TFT) 24. Further, a scanning line (gate electrode bus) 26 a and a data line 26 b are provided between the display electrodes 22 so as to correspond to the black matrix 14.

In such an LCD 1, each colored pattern 16R, 16G, 16B constitutes a pixel, and a display electrode corresponding to each pixel is turned on and off in a state where illumination light is radiated from the polarizing plate 51 side. The layer 40 operates as a shutter, and light is transmitted through each pixel of the coloring patterns 16R, 16G, and 16B to perform color display.

The transparent substrate 12 of the color filter 10 may be a rigid material such as quartz glass, Pyrex glass, or synthetic quartz plate, or a transparent resin film.
A flexible material having flexibility, such as an optical resin plate, can be used. Among them, especially Corning 7
059 glass is a material with a small coefficient of thermal expansion, excellent in dimensional stability and workability in high-temperature heat treatment. In addition, since it is a non-alkali glass containing no alkali component in the glass, it is used as an active matrix type color filter for LCD. Are suitable.

In the present invention, a black matrix 14 and a colored layer 16 are formed on a transparent substrate 12 by using a photosensitive material which exhibits tackiness upon exposure. Here, an example of manufacturing a color filter according to the present invention will be described with reference to FIGS. First, a photosensitive substance is applied on the transparent substrate 12 to form a photosensitive layer 13 having a thickness of about 0.5 to 5 μm (FIG. 4A). Next, the photosensitive layer 13 is exposed through a photomask for a black matrix to expose an exposed portion 13a.
To exhibit adhesiveness (FIG. 4 (B)). Then, a concealing powder substance is sprayed on the photosensitive layer 13 (FIG. 4 (C)), and the concealing powder substance is attached to the exposed portions 13a, and excess concealing powder substance is blown off to remove the black matrix 14.
Is formed (FIG. 4D). The opaque powder material constituting the black matrix 14 contains a binder having an adhesive property to the transparent substrate 12.

Next, the photosensitive layer 13 is exposed through a photomask for a red pattern to cause the exposed portion 13b to exhibit adhesiveness (FIG. 5A). Then, a red powder material is sprayed on the photosensitive layer 13 (FIG. 5B), and the red powder material is attached to the exposed portions 13b and excess red powder material is blown off to form a red pattern 16R (FIG. 5).
(C)). Similarly, exposure is performed through a photomask for a green pattern, a green powder material is adhered, and a green pattern 1 is formed.
6G is formed (FIG. 5D), exposed through a blue pattern photomask, and a blue powder material is deposited to form a blue pattern 16B (FIG. 5E). The colored powder material constituting such a colored pattern contains a binder having adhesiveness to the transparent substrate 12, as in the above-described concealed powder material.

As described above, the black matrix 1
After forming the fourth layer 4 and the colored layer 16, a heat treatment is performed. The heat treatment condition is usually 150 ° C. or higher, preferably 250 ° C. or higher. By such heat treatment, the photosensitive layer 13 is sublimated and removed, and the concealing powder material constituting the black matrix 14 and the colored powder material constituting the colored layer 16 come into contact with the transparent substrate 12 (FIG. 6 ( A)). At the same time, black matrix 14
Is melted, and the binder enhances the adhesiveness between the transparent substrate 12 and the concealing powder material and the coloring powder material, and forms the black matrix 14. The concealing powder material and the coloring powder material constituting the coloring layer 16 are flattened, and the surface smoothness of the black matrix 14 and the coloring layer 16 is improved (FIG. 6B).

The application of the concealing powder substance and each of the coloring powder substances to the exposed portions may be performed only once as described above, or may be repeated a plurality of times. Further, by eliminating the black matrix forming step in the above-described manufacturing steps, a color filter without a black matrix can be manufactured. Further, in the above-described embodiment, the colored layer 16 is formed after the black matrix 14 is formed. However, the forming order is not limited to this, and the black matrix 14 is formed after the colored layer 16 is formed. It may be formed.

The concealing powder substance and the coloring powder substance are titanium oxide (TiO ₂ ), SiO ₂ , glass powder, carbon black, graphite, copper-phthalocyanines, azo dyes, metal powders such as aluminum, copper, iron or metal oxides. The product can be used as fine particles having an average particle size of 30 μm or less, preferably 10 μm or less using a binder.

In the present invention, the binder constituting the concealing powder substance and the coloring powder substance is a binder having adhesiveness to the transparent substrate 12 as described above. When the transparent substrate 12 is a glass substrate, the binder is preferably a resin binder containing a silane coupler or a silane-modified resin binder. As the silane coupler, those having a chemical structure represented by RSix ₃ are preferably used. R is usually an organic functional group having a vinyl, glycidoxy, methacryl, amino, mercapto group or the like, and X is a hydrolyzable group such as a chlorine or alkoxy group.

As such a silane coupler, γ-
(2-aminoethyl) aminopropyltrimethoxysilane, γ- (2-aminoethyl) aminopropylmethyldimethoxysilane, aminosilane, γ-methacryloxypropyltrimethoxysilane, N-β- (N-vinylbenzylaminoethyl)- γ-aminopropyltrimethoxysilane hydrochloride, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, vinyltriacetoxysilane, γ-chloropropyltrimethoxy Silane, hexamethyldisilazane, γ-
Anilinopropyltrimethoxysilane, vinyltrimethoxysilane, octadecyldimethyl [3- (trimethoxysilyl) propyl] ammonium chloride, γ-chloropropylmethyldimethoxysilane, γ-mercaptopropylmethyldimethoxysilane, methyltrichlorosilane, dimethyldichlorosilane , Trimethylchlorosilane, vinyltrichlorosilane, vinyltris (β-methoxyethoxy) silane, vinyltriethoxysilane, β-
(3,4 epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, N-β (aminoethyl) γ-aminopropylmethyl Dimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, and the like can be used.

Such a silane coupler is preferably contained in the following resin binder in an amount of about 1 to 3% by weight. 1. Polystyrene resin (1) Polystyrene homopolymer (2) Copolymer polymer Hydrogenated styrene resin Styrene / isobutylene copolymer Styrene / butadiene copolymer Acrylonitrile / butadiene / styrene terpolymer (ABS) Acrylonitrile / styrene / acryl Acid ester terpolymer (ASA) styrene / acrylonitrile copolymer (AS) acrylonitrile / acrylic rubber / styrene terpolymer (AAS) acrylonitrile / chlorinated polyethylene / styrene terpolymer (ACS) acrylonitrile / EAV / styrene terpolymer (A
ES) 2. Acrylic and acrylic resin (1) Homopolymer Polymethyl methacrylate Ethyl methacrylate N-butyl methacrylate Glycidyl methacrylate (2) Copolymer Methylene methacrylate / butyl methacrylate copolymer Ethyl acrylate / Acrylic acid copolymer Coalescing 3. Styrene / (meth) acrylate copolymer Styrene / acryl copolymer Styrene / diethylamino / ethyl methacrylate copolymer Styrene / butadiene / acrylate copolymer Styrene / butadiene copolymer Styrene / butadiene / chlorinated paraffin Copolymer Styrene / methyl methacrylate copolymer Styrene / methyl methacrylate copolymer / styrene butyl methacrylate blend Styrene / n-butyl methacrylate Styrene / diethylamino / ethyl methacrylate Styrene / methyl methacrylate / n-butyl acrylate Styrene / methyl methacrylate / butyl acrylate-N- (ethoxymethyl) acrylamide Styrene / glycidyl methacrylate Styrene / dimethylamido No-ethyl methacrylate Styrene / butadiene / dimethylaminoethyl methacrylate Styrene / acrylic acid ester / maleic acid ester Styrene / methyl methacrylate / 2-ethylhexyl acrylate copolymer Styrene / n-butyl acrylate / ethyl glycol methacrylate Styrene -N-butyl methacrylate-acrylic acid copolymer styrene-n-butyl methacrylate-maleic anhydride resin styrene-butyl acrylate-isobutyl maleic acid half ester-divinylbenzene copolymer Also, as a silane-modified resin binder, for example, A resin obtained by graft-polymerizing a silane having a vinyl group and an alkoxy group onto a resin having an unsaturated bond can be used.

Incidentally, additives such as a wetting agent and an antistatic agent may be added to the binder. As the photosensitive substance which exhibits tackiness upon exposure, a 1,4-dihydropyridine compound as shown below can be used.

1,4-dihydropyridine compound:
2,6-dimethyl-4- (2'-nitrophenyl)-
1,4-dihydropyridine-3,5-dicarboxylic acid dimethyl ester; 2,6-dimethyl-4- (2'-nitrophenyl) -1,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester; 2,6- Dimethyl-4
-(2'-nitro-4 ', 5'-dimethoxyphenyl)
-1,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester; 2,6-dimethyl-4- (2′-nitrophenyl) -1,4-dihydropyridine-3,5-
2,6-dimethyl-4- (2'-nitrophenyl) -1,4-dihydropyridine-3,5-dicarboxylic acid di (β-ethoxyethyl) ester; 2,6-dimethyl-4-dicarboxylic acid diisopropyl ester; (2'-nitrophenyl) -1,4-dihydropyridine-3,5-
Dicarboxylic acid 3-methyl-5-ethyl ester; 2,
6-dimethyl-4- (2'-nitrophenyl) -1,4
-Dihydropyridine-3,5-dicarboxylic acid 3-isopropyl-5-methyl ester; 2,6-dimethyl-4
-(2'-nitrophenyl) -3-aceto-1,4-dihydropyridine-5-carboxylic acid ethyl ester;
2,6-dimethyl-4- (2'-nitrophenyl)-
3,5-diacet-1,4-dihydropyridine and 2,6-dimethyl-4- (2'-nitrophenyl)-
3,5-dicyano-1,4-dihydropyridine.

Such 1,4-dihydropyridine compounds are, for example, 1 mol of an aliphatic or aromatic aldehyde,
It can be produced from 1 mol of ammonia and 2 mol of β-ketocarboxylic acid ester, β-ketocarboxylic nitrile or β-diketone according to the method of Hantzsch synthesis.

The above-mentioned photosensitive substance may be used alone to form the photosensitive layer 13, or may be used by mixing with a binder. The mixing ratio with the binder is preferably about 0.2 to 9 parts by weight per 1 part by weight of the binder. Binders used include polyacrylates and / or polymethacrylates, copolymers of acrylic acid and / or methacrylic acid or other acrylic monomers and / or vinyl monomers;
Copolymers of maleic anhydride, maleic acid and / or di- or semi-esters of styrene or other vinyl monomers, such as polyvinyl chloride, chlorinated products thereof, polyvinylidene chloride, chlorinated polyethylene, etc. Chlorine-containing vinyl polymer or copolymer; styrene copolymer with polystyrene and maleic acid, etc.
Ethylene copolymers with polyethylene and maleic acid; synthetic rubbers based on butadiene, chloroprene and the like and copolymers thereof with styrene, acrylonitrile and the like; polyethers such as high molecular weight polyethylene oxide and polyepichlorohydrin.

The photosensitive substance may contain a sensitizer, a stabilizer and the like. In order to apply the above-described photosensitive substance onto the transparent substrate 12, a known method such as a spin coating method can be used. Further, as a light source used for exposing the photosensitive layer 13, an ultra-high pressure mercury lamp, a xenon lamp, a fluorescent lamp, and the like can be given. Exposure dose in exposure is 50
About 300 mJ / cm ² is preferable.

A protective layer 18 provided to cover the black matrix 14 and the colored layer 16 of the color filter 10
Is intended to smooth the surface of the color filter 10 and can be formed using a transparent resin such as an acrylic resin, an epoxy resin, or a polyimide resin, or a transparent inorganic compound such as silicon dioxide. . The thickness of the protective layer is preferably about 0.2 to 50 μm. In the present invention, the black matrix 1 is formed by a heat treatment after the formation of the colored layer.
Since the surface smoothness of the coloring layer 4 and the coloring layer 16 are improved, such a protective layer 18 does not need to be formed.

As the transparent common electrode 19, an indium tin oxide (ITO) film can be used. The ITO film can be formed by a known method such as an evaporation method and a sputtering method, and the thickness is preferably about 200 to 2000 °.

Next, the present invention will be described in more detail with reference to experimental examples. (Experimental example 1) First, in 2-butanone 200cm ³ ,
6-dimethyl-4- (2'-nitrophenyl) -1,4
7.5 g of dimethyl ester of dihydropyridine-3,5-dicarboxylic acid and 2,6-dimethyl-4- (2'-
(Nitrophenyl) -1,4-dihydropyridine-3,5
-Dicarboxylic acid diethyl ester (7.5 g) was dissolved to prepare a photosensitive substance which exhibits tackiness upon exposure. Then, using the 7059 glass (thickness = 1.1 μm) manufactured by Corning Co., Ltd. as a transparent substrate, the above photosensitive substance was applied by a spin coating method (rotation speed = 500 rpm), and a photosensitive layer ( (Thickness = 1.5 μm).

Next, the photosensitive layer was exposed to ultraviolet light through a black matrix photomask. An ultra-high pressure mercury lamp was used as a light source for exposure, and the irradiation amount was 365 nm.
At a wavelength of 200 mJ / cm ² . It was confirmed by such ultraviolet light exposure that tackiness was developed in a region of the photosensitive layer irradiated with ultraviolet light.

Next, a black toner having the following structure was sprayed on the entire surface of the photosensitive layer, and then the black toner was blown off by compressed air. (Black toner) ・ Pigment: carbon black ・ Binder: polysterene homopolymer / γ- (2-
(Aminoethyl) aminopropyltrimethoxysilane 1% Average particle size = 7 μm As a result, the black toner adhered only to the area where the adhesiveness was exhibited by the above-described ultraviolet exposure, and a black matrix pattern was formed. The black toner blown off (removed) by the compressed air in this step can be collected and reused. The resolution at this time was 10 μm in line & space.

Next, the photosensitive layer to which the black toner was adhered was exposed to ultraviolet light at a predetermined position through a photomask for a red pattern. The UV exposure conditions were the same as the above exposure. Then, similarly to the case of the black toner, a red pattern was formed using the red toner having the following configuration.

(Red toner) Pigment: Watching red Binder: Polysterene homopolymer / γ- (2-
Aminoethyl) aminopropyltrimethoxysilane 1% Average particle size = 8 μm Next, the photosensitive layer to which the black toner and the red toner are adhered is passed through a photomask for a green pattern in the same manner as the red pattern. Then, a predetermined pattern was exposed to ultraviolet light to form a green pattern using a green toner (the same configuration as the red toner except that phthalocyanine green was used as a pigment).

Further, the photosensitive layer to which the black toner, the red toner and the green toner are adhered is exposed to ultraviolet light at a predetermined position through a photomask for a blue pattern in the same manner as the red pattern. (The same configuration as the red toner except that phthalocyanine blue was used as the pigment) to form a blue pattern. Thereby, a colored layer having a colored pattern of red (R), green (G), and blue (B) was formed.

Next, a heat treatment was performed at 270 ° C. for 30 minutes. Thereafter, a transparent common electrode (ITO film) having a thickness of about 220 ° was formed on the colored layer by a sputtering method to obtain a color filter.

In such a color filter, the photosensitive substance has been removed by sublimation, and the adhesion between the black matrix and the colored layer of the color filter and the transparent substrate is as follows.
It was good without peeling off in a grid test. (Experimental Example 2) A color filter was obtained in the same manner as in Experimental Example 1 except that the black toner and each of the red, green and blue toners were changed to toners using the following silane-modified resin binder.

(Silane-modified resin binder) Polystyrene homopolymer 80% Silicone / polyimide copolymer 20% The adhesion between the black matrix and the colored layer of such a color filter and the transparent substrate is peeled off by a grid test. It was good without it. (Comparative Experimental Example) A color filter was obtained in the same manner as in Experimental Example 1 except that the black toner and each of the red, green, and blue toners were changed to toners using the following resin binders.

(Resin binder) Polystyrene homopolymer The adhesion between the black matrix and the colored layer of such a color filter and the transparent substrate was peeled off by a cross-cut test, and the color filter was insufficient.

[0044]

As described in detail above, according to the present invention, a photosensitive substance which exhibits tackiness upon exposure is coated on a transparent substrate to form a photosensitive layer, and the photosensitive layer is formed in a predetermined pattern. The step of exposing the layer and adhering a colored powder material containing a binder having adhesiveness to the transparent substrate to the exposed portion to form a colored pattern is repeated for the required number of colors to form a colored layer, and thereafter, a heat treatment is performed. As a result, the colored powder material constituting the colored layer is melted, the colored powder material is maintained in a good adhesion state with the transparent substrate, and the surface smoothness of the colored layer is greatly improved, and a color filter capable of forming a fine pattern. Can be manufactured, and the process of the color filter can be simplified, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an active matrix type liquid crystal display using a color filter manufactured according to the present invention.

FIG. 2 is a schematic sectional view of the liquid crystal display shown in FIG.

FIG. 3 is an enlarged partial cross-sectional view of a color filter used in the liquid crystal display shown in FIG.

FIG. 4 is a process chart for explaining a method of manufacturing a color filter according to the present invention.

FIG. 5 is a process diagram illustrating a method of manufacturing a color filter according to the present invention.

FIG. 6 is a schematic cross-sectional view for explaining a bonding state between a transparent substrate and a coloring powder substance.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Color filter 12 ... Transparent substrate 13 ... Photosensitive layer 14 ... Black matrix 16 ... Coloring layer 16R, 16G, 16B ... Coloring pattern

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G02B 5/20 101 H01L 27/14 H04N 9/07

Claims (2)

(57) [Claims] Claims: 1. A photosensitive material that exhibits tackiness upon exposure is coated on a transparent glass substrate to form a photosensitive layer.
A step of exposing the photosensitive layer in a predetermined pattern and attaching a colored powder material containing a silane-modified resin binder having adhesiveness to the transparent glass substrate on the exposed portion to form a colored pattern is required. Repeat for the number of colors to form a colored layer,
Thereafter, a heat treatment is performed. 2. The method according to claim 1, wherein the photosensitive layer is exposed to a black matrix pattern, and a concealing powder material containing a binder having an adhesive property to the transparent glass substrate is attached to the exposed portion to form a black matrix. 2. The method for manufacturing a color filter according to claim 1, wherein a color filter is formed.