JPH0943425A - Color filter and color liquid crystal display device using that - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deterioration in the display quality due to scattering or transmission of light by a spacer, to improve the display contrast and to simplify the production process by forming the space by laminating color layers on a resin black matrix. SOLUTION: This color filter is produced by forming a black matrix 2 on a transparent substrate 1 and arranging plural color layers 3-5 of three primary colors on the black matrix 2. The black matrix 2 consists of a resin black matrix prepared by dispersing a light-shielding agent in a resin. A spacer is formed by laminating color layers 3-5 of three primary colors on the black matrix 2. Each layer of the color layers of three primary colors is preferably 1-3μm thick, and in this case, the total thickness of the layers is 3-9μm. If the total film thickness is smaller than 3μm, an enough cell gap is not obtd. If the total thickness exceeds 9μm, it is not preferable because uniform coating of color layers 3-5 is difficult and moreover, reliability of a transparent conductive film 6 to be formed on these layers decreases.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter having a spacer function and a color liquid crystal display device using the same.

[0002]

2. Description of the Related Art In order to maintain the thickness (cell gap) of a liquid crystal layer, a color liquid crystal display device conventionally used is generally provided with a thin film transistor (T) as shown in FIG.
It has plastic beads or glass fibers as a spacer between an electrode substrate provided with FT) or a plurality of scanning electrodes and the substrate on the color filter side. Since spacers such as plastic beads are scattered here, which position (in-plane position) between the electrode substrate and the substrate on the color filter side is used.
It is not decided whether it will be placed in.

JP-A-56-140324, JP-A-63-
82405, JP-A-4-93924, and JP-A-5-196.
946 proposes a liquid crystal display device using a structure in which colored layers forming a color filter are overlapped as a spacer.

[0004]

In a color liquid crystal display device using plastic beads or the like as a spacer, the position of the spacer such as the plastic beads is not fixed, and the liquid crystal is scattered or transmitted by the spacer located on the pixel. There is a problem that the display quality of the display device is degraded.

A liquid crystal display device in which spacers such as plastic beads are scattered and used has the following other problems. That is, since the spacer is spherical or rod-shaped and comes in contact with a point or line during cell crimping,
There was a drawback that the alignment film and the transparent electrode were damaged, and display defects were likely to occur. Further, there is a disadvantage that the liquid crystal is contaminated by the damage of the alignment film and the transparent electrode, and the voltage is easily lowered.

In addition, since a step of uniformly dispersing the spacers is required, or the particle size distribution of the spacers needs to be controlled with high precision, a liquid crystal display device having stable display quality can be provided by a simple method. It was difficult to get.

Japanese Patent Laid-Open Nos. 56-140324 and 63-
82405, JP-A-4-93924, and JP-A-5-196.
In 946, since the structure in which the colored layers of two colors or three colors are overlapped is used as the spacer, the thickness (cell gap) of the liquid crystal layer actually obtained is the thickness of one or two colored layers. Therefore, it is difficult to obtain a liquid crystal display device having a sufficient cell gap, and even if the cell gap can be maintained by the thickness of one or two colored layers, it is necessary to increase the thickness of the colored layer. It has been difficult to obtain a liquid crystal display device having satisfactory reliability such as deterioration of durability of the ITO film formed on the color filter.

In view of the above problems, the present invention overcomes the above-mentioned conventional drawbacks by fixing the position of a spacer on a resin black matrix composed of a resin and a light-shielding agent and keeping the cell gap constant. It is an object of the present invention to provide a color filter and a liquid crystal display device using the same.

[0009]

In order to achieve the above object, a color filter according to the present invention and a color liquid crystal display device using the same have the following constitution.

That is, according to the present invention, in a color filter in which a black matrix is provided on a transparent substrate and a plurality of colored layers of three primary colors are further arranged thereon, (A) the black matrix disperses a light shielding agent in a resin. (B) a color filter having a spacer formed by stacking colored layers of three primary colors on the black matrix, and a liquid crystal layer formed by a color filter having a transparent electrode substrate and a transparent electrode. In the sandwiched color liquid crystal display device, the color filter is a color filter in which a black matrix and a colored layer composed of three primary colors are provided on a transparent substrate, and (A) the black matrix has a light-shielding agent dispersed in a resin. A resin black matrix, (B) 3 originals on a part of the black matrix A color liquid crystal display device having a spacer formed by lamination of the colored layer made of.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below.

In the color filter of the present invention, a resin black matrix made of a resin and a light-shielding agent is provided on a transparent substrate, and a plurality of colored layers of three primary colors are arranged on the resin black matrix. The color filter is composed of a large number of picture elements, with a pixel covered by each colored layer of three primary colors as one picture element. The black matrix here is
The light-shielding regions arranged between the pixels are shown and provided to improve the display contrast of the liquid crystal display device.

The transparent substrate used in the color filter of the present invention is not particularly limited, and inorganic glass such as quartz glass, borosilicate glass, aluminosilicate glass, soda lime glass whose surface is coated with silica, An organic plastic film or sheet is preferably used.

A resin black matrix comprising a resin and a light-shielding agent is provided on the transparent substrate. The resin used for the black matrix is not particularly limited.
A photosensitive or non-photosensitive material such as an epoxy resin, an acrylic resin, a urethane resin, a polyester resin, a polyimide resin, a polyolefin resin, and gelatin is preferably used. The resin for the black matrix is preferably a resin having higher heat resistance than the resin used for the pixel and the protective film, and a polyimide resin is preferably a resin having resistance to the organic solvent used in the process after the formation of the black matrix. Resins are particularly preferably used.

The polyimide-based resin is not particularly limited, but is usually prepared by heating a polyimide precursor (n = 1 to 2) having a structural unit represented by the general formula (1) as a main component or heating the polyimide precursor with an appropriate catalyst. What is converted is used suitably.

[0016]

Embedded image Further, the polyimide resin may contain a bond other than the imide bond such as an amide bond, a sulfone bond, an ether bond, and a carbonyl bond, in addition to the imide bond.

In the general formula (1), R ₁ is at least 2
It is a trivalent or tetravalent organic group having one or more carbon atoms. From the viewpoint of heat resistance, R ₁ is preferably a trivalent or tetravalent group containing a cyclic hydrocarbon, an aromatic ring or an aromatic heterocycle, and having 6 to 30 carbon atoms. Examples of R ₁ include phenyl group, biphenyl group, terphenyl group, naphthalene group, perylene group, diphenyl ether group, diphenylsulfone group, diphenylpropane group, benzophenone group, biphenyltrifluoropropane group, cyclobutyl group, cyclopentyl group, and the like. However, the present invention is not limited to these.

R ₂ is a divalent organic group having at least 2 carbon atoms, but from the viewpoint of heat resistance, R ₂ contains a cyclic hydrocarbon, an aromatic ring or an aromatic heterocycle, and A divalent group having 6 to 30 carbon atoms is preferable. Examples of R ₂ include phenyl group, biphenyl group, terphenyl group, naphthalene group, perylene group, diphenyl ether group, diphenyl sulfone group, diphenylpropane group, benzophenone group, biphenyltrifluoropropane group, diphenylmethane group, dicyclohexylmethane group, etc. Examples include, but are not limited to: In the polymer having the structural unit (1) as a main component, R ₁ and R ₂ may each be composed of one type of them, or may be a copolymer composed of two or more types of each. . Further, in order to improve the adhesiveness to the substrate, it is preferable to copolymerize bis (3-aminopropyl) tetramethyldisiloxane having a siloxane structure as the diamine component as long as the heat resistance is not reduced.

Specific examples of the polymer having the structural unit (1) as a main component include pyromellitic dianhydride, 3, 3
′, 4,4′-Benzophenonetetracarboxylic dianhydride 3,3 ′, 4,4′-biphenyltrifluoropropanetetracarboxylic dianhydride 3,3 ′, 4,4′-
Biphenyl sulfone tetracarboxylic acid dianhydride, 2,
At least one carboxylic acid dianhydride selected from the group consisting of 3,5, -tricarboxycyclopentylacetic acid dianhydride and the like, and paraphenylenediamine, 3,3'-diaminodiphenyl ether, 4,4'-diaminodiphenyl ether 3,4 'diaminodiphenyl ether, 3,3
Polyimide synthesized from one or more diamines selected from the group of '-diaminodiphenyl sulfone, 4,4'-diaminodiphenyl sulfone, 4,4'-diaminodicyclohexylmethane, 4,4'-diaminodiphenylmethane Precursors, but are not limited thereto.
These polyimide precursors are synthesized by a known method, that is, by selectively combining tetracarboxylic dianhydride and diamine and reacting them in a solvent.

As a light shielding agent for a black matrix,
In addition to metal oxide powder such as carbon black, titanium oxide, and iron tetroxide, metal sulfide powder, and metal powder, a mixture of red, blue, and green pigments can be used. Among these,
In particular, carbon black has excellent light-shielding properties and is particularly preferable. Since carbon black having a good dispersion and a small particle size mainly exhibits a brownish color tone, it is preferable to mix a pigment having a complementary color with the carbon black to make it an achromatic color.

When the resin for the black matrix is polyimide, the black paste solvent is usually N-methyl-2-pyrrolidone, N, N-dimethylacetamide,
An amide-based polar solvent such as N, N-dimethylformamide and a lactone-based polar solvent such as γ-butyrolactone are preferably used.

As a method for dispersing a light-shielding agent such as a pigment of a complementary color to carbon black or carbon black,
For example, there is a method in which a light-shielding agent, a dispersant, and the like are mixed in the polyimide precursor solution and then dispersed in a disperser such as a three-roll mill, a sand grinder, and a ball mill, but the method is not particularly limited. In addition, various additives may be added for improving the dispersibility of carbon black, or for improving applicability and leveling property.

As a method for producing the resin black matrix,
After the black paste is applied and dried on the transparent substrate, patterning is performed. As a method for applying the black paste, a dip method, a roll coater method, a spinner method, a die coating method, a method using a wire bar, or the like is preferably used, after which heat drying (semi-cure) is performed using an oven or a hot plate. To do. The semi-curing conditions vary depending on the resin, solvent and paste applied amount, but it is usually preferable to heat at 60 to 200 ° C. for 1 to 60 minutes.

In the case where the resin is a non-photosensitive resin, the black paste coating obtained in this manner is formed after forming a positive photoresist coating thereon, and then the resin is a photosensitive resin. In some cases, exposure and development are performed as they are or after forming an oxygen barrier film. If necessary, remove the positive photoresist or oxygen barrier film,
Further, it is heated and dried (this cure). When the polyimide-based resin is obtained from the precursor, the curing conditions are slightly different depending on the coating amount, but it is generally heating at 200 to 300 ° C. for 1 to 60 minutes. Through the above process, a black matrix is formed on the transparent substrate.

The thickness of the resin black matrix used in the present invention is preferably 0.5 to 1.5 μm, more preferably 0.8 to 1.2 μm. As described later, the thickness of the resin black matrix is important in securing the cell gap of the liquid crystal display device. When the thickness is smaller than 0.5 μm, it is difficult to secure a sufficient cell gap, It is not preferable because the light-shielding property becomes insufficient. When the thickness is more than 1.5 μm, the light-shielding property can be secured, but the flatness of the color filter is easily sacrificed, and a step is easily generated. When a surface step is formed, even if a transparent conductive film or a liquid crystal alignment film is formed on the color filter, the step is hardly reduced, and the alignment process due to the rubbing of the liquid crystal alignment film becomes uneven or the cell gap varies. If so, the display quality of the liquid crystal display device is degraded. To reduce the surface step, it is effective to provide a transparent protective film on the colored layer, but it is disadvantageous in that the structure of the color filter becomes complicated and the manufacturing cost increases.

The light-shielding property of the resin black matrix is represented by an OD value (common logarithm of the reciprocal of the transmittance).
In order to improve the display quality of the liquid crystal display device, it is preferably at least 2.5, more preferably at least 3.0. The preferred range of the thickness of the resin black matrix has been described above, but the upper limit of the OD value should be determined in relation to this.

The reflectance of the resin black matrix is a reflectance (Y value) which is luminosity-corrected in the visible region of 400 to 700 nm in order to reduce the influence of reflected light and improve the display quality of the liquid crystal display device. It is preferably 2% or less, more preferably 1% or less. Usually, (20 to 200) μm × (20 to 300) μ is provided between the resin black matrices.
m openings are provided, and a plurality of colored layers of three primary colors are arranged so as to cover at least the openings.

The colored layer forming the color filter includes at least three primary colors. That is, when color display is performed by the additive method, red (R), green (G), blue (B)
When the color display is performed by the subtractive color method, the three primary colors of cyan (C), magenta (M), and yellow (Y) are selected. Generally, a picture element for color display can be formed by using an element including these three primary colors as one unit. For the coloring layer, a resin colored with a coloring agent is used.

As the coloring agent used in the coloring layer, organic pigments, inorganic pigments, dyes, and the like can be preferably used.
Further, various additives such as an ultraviolet absorber, a dispersant, and a leveling agent may be added. As the organic pigment, phthalocyanine-based, aziraki-based, condensed azo-based, quinacridone-based, anthraquinone-based, perylene-based, and perinone-based pigments are preferably used.

The resin used for the colored layer is preferably a photosensitive or non-photosensitive material such as an epoxy resin, an acrylic resin, a urethane resin, a polyester resin, a polyimide resin, a polyolefin resin, and gelatin. It is preferable to disperse or dissolve the colorant in these resins for coloring. As the photosensitive resin, there are types such as a photodecomposable resin, a photocrosslinkable resin and a photopolymerizable resin, and particularly, a monomer, an oligomer or a polymer having an ethylenically unsaturated bond and an initiator which generates a radical by ultraviolet rays. A photosensitive composition, a photosensitive polyamic acid composition, and the like are preferably used. As the non-photosensitive resin, those which can be developed with the above-mentioned various polymers are preferably used. However, heat-resistant resins capable of withstanding such heat in the process of forming a transparent conductive film and the process of manufacturing a liquid crystal display device are preferably used. Is preferable, and a resin having resistance to an organic solvent used in a manufacturing process of a liquid crystal display device is preferable. Therefore, a polyimide resin is particularly preferably used.

As a method of forming a colored layer, a colored paste is applied on a substrate on which a resin black matrix is formed, dried, and then patterned. As a method of obtaining a colored paste by dispersing or dissolving the colorant, after mixing the resin and the colorant in a solvent, three-roll, sand grinder, there is a method of dispersing in a dispersing machine such as a ball mill, The method is not particularly limited.

As a method for applying the colored paste, a dipping method, a roll coater method, a spinner method, a die coating method, a method using a wire bar, or the like is preferably used, as in the case of the black paste. Heat drying (semi-cure) is performed using a plate.
The conditions for the semi-cure vary depending on the resin used, the solvent and the coating amount of the paste, but it is usually preferable to heat at 60 to 200 ° C. for 1 to 60 minutes. When the resin is a non-photosensitive resin, the colored paste film thus obtained is formed after forming a positive photoresist film thereon, or when the resin is a photosensitive resin. Exposure / development is performed as it is or after forming an oxygen barrier film. If necessary, the positive photoresist or the oxygen blocking film is removed, and the film is dried by heating (this cure). The curing conditions vary depending on the resin, but when a polyimide resin is obtained from the precursor, it is generally heated at 200 to 300 ° C. for 1 to 60 minutes. Through the above process, a patterned colored layer is formed on the substrate on which the black matrix is formed.

After the colored layer of the first color is formed over the entire surface of the substrate on which the resin black matrix is formed as described above, unnecessary portions are removed by photolithography to obtain the desired first color. The pattern of the colored layer is formed. In this case, the colored layer is left at least in the portion covering the opening of the resin black matrix and in the portion where the spacer is formed by laminating the colored layer. The same operation is repeated for the second color and the third color to form a colored layer such that one colored layer remains on the opening of the resin black matrix and three colored layers remain on the spacer. The coloring layer on the opening and the coloring layer forming the spacer may be continuous or separated. However, when the ITO film formed on the color filter is disconnected between the coloring layer and the spacer on the opening to prevent conduction between the color filter side and the counter substrate, the coloring layer and the spacer on the opening are formed. It is preferable that the color layer is separated and fractionated.

The thickness of the three primary color layers is not particularly limited, but is preferably 1 to 3 μm per layer. In this case, the total thickness of the three primary color layers is 3 to 9 μm
Becomes If the total film thickness is less than 3 μm, a sufficient cell gap cannot be obtained, and if it exceeds 9 μm, it is difficult to uniformly apply the colored layer, and further, the transparent conductive film formed on the color filter. Is unfavorable because it reduces the reliability.

When the cell gap is maintained by using the color filter of the present invention, for example, R, G, and
When B is selected, the film thickness of G + B + Bk (resin black matrix) for R, and B + R + Bk for G
The film thickness of R + G + Bk for B corresponds to the cell gap in the liquid crystal display device. In the case of increasing the dispersibility of the coloring agent in the paste for forming the coloring layer or improving the leveling property for the purpose of uniform application, the height of the spacer formed by stacking the coloring layers of the three primary colors is determined by the pixel. It is smaller than the sum of the film thicknesses of the three primary color layers in the portion. That is, the cell gap becomes smaller than the film thickness of G + B + Bk for R, similarly becomes smaller than the film thickness of B + R + Bk for G, and smaller than R + G + Bk for B.

The spacers formed by stacking the colored layers of the three primary colors in the present invention are formed on the resin black matrix, and the area and the location of the spacers face the color filter when a liquid crystal display device is manufactured. It is greatly affected by the structure of the transparent electrode substrate. Therefore, if there is no restriction on the side of the transparent electrode substrate facing each other, the area and the arrangement location of the spacer are not particularly limited, but when considering the size of the pixel, the area per spacer is 1
It is preferably 0μm ² ~1000μm ^2. 10
If it is smaller than μm ² , it is difficult to form a precise pattern or stack it, and if it is larger than 1000 μm ² , it becomes difficult to completely arrange it on the black matrix depending on the shape of the spacer portion.

Next, a color liquid crystal display device produced using the color filter of the present invention will be described. A color liquid crystal display device of the present invention is shown in FIG. 1, which is prepared by facing the color filter and the transparent electrode substrate. The color filter may be provided with a transparent protective film on the colored layer, if necessary, but the structure becomes complicated, which is disadvantageous when considering the manufacturing cost. In addition, ITO is on the color filter.
A transparent electrode such as a film is formed. As a transparent electrode substrate facing the color filter, a transparent electrode such as an ITO film is patterned and provided on the transparent substrate. On the transparent electrode substrate, in addition to the transparent electrode, a thin film transistor (TFT)
Devices, thin film diode (TFD) devices, scan lines,
By providing a signal line or the like, a TFT liquid crystal display device or a TFD liquid crystal display device can be manufactured. A liquid crystal alignment film is provided on the color filter having a transparent electrode and the transparent electrode substrate, and is subjected to an alignment process such as rubbing. After the alignment treatment, the color filter and the transparent electrode substrate are attached to each other using a sealant, and liquid crystal is injected through the injection port provided in the seal portion, and then the injection port is sealed. The module is completed by mounting an IC driver or the like after attaching the polarizing plate to the outside of the substrate.

The color filter of the present invention and the color liquid crystal display device using the same are used for display screens of personal computers, word processors, engineering workstations, navigation systems, liquid crystal televisions, videos and the like, and also for liquid crystal projections and the like. It is preferably used.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments, but the effects of the present invention are not limited by the embodiments used.

[0040]

【Example】

(Preparation of resin black matrix) 3,3 ', 4,4'
-Biphenyltetracarboxylic dianhydride, 4,4'-diaminodiphenyl ether, and bis (3-aminopropyl) tetramethyldisiloxane with N-methyl-2
The reaction was carried out using pyrrolidone as a solvent to obtain a polyimide precursor (polyamic acid) solution.

A carbon black mill base having the following composition was dispersed using a homogenizer at 7,000 rpm for 30 minutes, and glass beads were filtered to prepare a black paste.

Carbon Black Mill Base Carbon Black (MA100, manufactured by Mitsubishi Kasei Co., Ltd.) 4.6 parts Polyimide precursor solution 24.0 parts N-methylpyrrolidone 61.4 parts Glass beads 90.0 parts 300 × 350 mm size Non-alkali glass (manufactured by Nippon Electric Glass Co., Ltd., OA-2) substrate was coated with black paste using a spinner, and the temperature was 135 ° C in an oven.
For 20 minutes. Subsequently, a positive type resist (Shipley “Microposit” RC100 30cp) was applied by a spinner and dried at 90 ° C. for 10 minutes. The resist film thickness is 1.
The thickness was 5 μm. Exposure machine PLA-501 manufactured by Canon Inc.
Using F, exposure was performed through a photomask.

Then, an aqueous solution containing 2% by weight of tetramethylammonium hydroxide at 23 ° C. was used as a developer.
The substrate was dipped in a developing solution, and at the same time, the substrate was oscillated so as to reciprocate once in a width of 10 cm for 5 seconds, so that the positive resist was developed and the polyimide precursor was etched at the same time. The development time was 60 seconds. After that, remove the positive resist with methyl cellosolve acetate, and
After curing at 300 ° C. for 30 minutes, a resin black matrix substrate was obtained. The film thickness of the resin black matrix is 0.9
0 μm, and the OD value was 3.0. The reflectance (Y value) at the interface between the resin black matrix and the glass substrate was 1.2%.

(Preparation of Colored Layer) Next, as the red, green and blue pigments, a dianthraquinone pigment represented by Color index No. 65300 Pigment Red 177, Color Index No. 74265, respectively.
A phthalocyanine green pigment represented by Pigment Green 36 and a phthalocyanine blue pigment represented by Color Index No. 74160 Pigment Blue 15-4 were prepared. Each of the above pigments was mixed and dispersed in a polyimide precursor solution, and red,
Green and blue colored pastes were obtained. First, apply a blue paste on a resin black matrix substrate,
For 10 minutes with hot air and semi-cure at 120 ° C. for 20 minutes. After this, a positive resist (Shipley "Microposit" R
C100 30cp) was applied by a spinner and dried at 80 ° C for 20 minutes. Exposure is performed using a mask, and an alkali developer (Shiple
The substrate was dipped in y "Microposit" 351), and the positive resist was developed and the polyimide precursor was etched at the same time while shaking the substrate. After that, the positive resist is peeled off with methylcellosolve acetate,
Furthermore, it was cured at 300 ° C. for 30 minutes. The film thickness of the colored pixel portion was 2.0 μm. By this patterning, the first step of the spacer was formed on the resin black matrix together with the formation of the blue pixel.

After washing with water, the second stage of the spacer was formed on the resin black matrix in the same manner as the formation of the red pixel. The film thickness of the red pixel portion was 1.8 μm.

Further, after washing with water, the third step of the spacer was formed on the resin black matrix in the same manner as the formation of the green pixel to form a color filter. The film thickness of the green pixel portion was 1.9 μm.

The area of each spacer portion provided on the resin black matrix by stacking the colored layers was about 500 μm ² . The height of the spacer (thickness of three colored layers on the resin black matrix) is 5.0 μm.
Which is lower than the total thickness (5.7 μm) of the colored layers. The spacer was provided in the screen at a rate of one for every three pixels. Also, spacers were provided on a part of the frame formed of a resin black matrix around the screen by color overlapping at the same density as in the screen.

(Production of Color Liquid Crystal Display Device) An ITO film was formed as a mask on the color filter by a sputtering method. The thickness of the ITO film was 1500 angstroms, and the surface resistance was 20 Ω / □. This ITO
A polyimide-based alignment film was provided on the film, and a rubbing treatment was performed. In addition, a transparent electrode substrate provided with a thin film transistor element was prepared, a polyimide type alignment film was similarly provided, and a rubbing treatment was performed. After a color filter provided with an alignment film and a transparent electrode substrate provided with a thin film transistor element were bonded together using a sealant, liquid crystal was injected through an injection port provided in the seal portion. The liquid crystal was injected by leaving the empty cell under reduced pressure, immersing the injection port in the liquid crystal tank, and returning to normal pressure. After the liquid crystal was injected, the injection port was sealed, and a polarizing plate was bonded to the outside of the substrate to form a cell. The obtained liquid crystal display had good display quality.

[0049]

The color filter of the present invention is one in which a spacer formed by laminating colored layers is provided on a resin black matrix, and the following effects are obtained when a liquid crystal display device is produced using this spacer. To be

(1) Since the spacer does not exist on the pixel portion, the display quality is not deteriorated due to the scattering and transmission of light by the spacer, and the display contrast is particularly improved.

(2) Since the spacers come into contact with the transparent electrode substrates facing each other on the surface, the alignment film and the transparent electrode are less damaged and a display with few defects can be obtained.

(3) The step of spraying spacers is not necessary, and the manufacturing process of the liquid crystal display device is simplified.

(4) It is not necessary to control the particle size distribution of the spacer with high accuracy, and the liquid crystal display device can be easily manufactured.

(5) Since the cell gap is maintained by the resin black matrix and the film thickness of two colored layers, a liquid crystal display device having a sufficient cell gap can be obtained.

(6) The durability of the ITO film on the color filter is good.

[Brief description of drawings]

FIG. 1 is a sectional view of a color liquid crystal display device using a color filter obtained by the present invention.

FIG. 2 is a sectional view of a conventional color liquid crystal display device.

[Explanation of symbols]

 Reference Signs List 1, 13: transparent substrate (glass substrate) 2: resin black matrix 3: colored layer (B) 4: colored layer (R) 5: colored layer (G) 6: transparent electrode 7, 9: alignment film 8: liquid crystal 10 … Pixel electrode 11… Insulating film 12… Attached electrode for liquid crystal drive circuit 14 Chromium black matrix 15 Protective film 16… Plastic beads

Claims (10)

[Claims] A black matrix is provided on a transparent substrate,
Further, in a color filter in which a plurality of colored layers of three primary colors are arranged thereon, (A) the black matrix is a resin black matrix in which a light shielding agent is dispersed in a resin, (B) 3 on the black matrix A color filter having a spacer formed by stacking colored layers of primary colors. 2. The color filter according to claim 1, wherein the resin forming the resin black matrix is polyimide. 3. The film thickness of the resin black matrix is 0.5.
The color filter according to claim 1, which has a thickness of about 1.5 μm. 4. The resin black matrix has an OD value of 2.5.
It is above, The color filter of Claim 1 characterized by the above-mentioned. 5. The reflectance of the resin black matrix is 2%.
The color filter according to claim 1, wherein: 6. The color filter according to claim 1, wherein the colored layers of the three primary colors are made of polyimide. 7. The total of the film thicknesses of the colored layers of the three primary colors is 3 to 9.
The color filter according to claim 1, which has a thickness of μm. 8. The color filter according to claim 1, wherein the height of the spacer formed by stacking the colored layers of the three primary colors is lower than the sum of the film thicknesses of the colored layers of the three primary colors. 9. An area of spacers formed by stacking colored layers of three primary colors is 10 μm ^{2 to} 1000 per unit.
The color filter according to claim 1, which has a size of μm ² . 10. A color liquid crystal display device in which a liquid crystal layer is sandwiched between a transparent electrode substrate and a color filter having a transparent electrode, wherein the color filter is a color filter in which a black matrix and colored layers of three primary colors are provided on the transparent substrate. And (A) the black matrix is a resin black matrix in which a light-shielding agent is dispersed in a resin, (B) a spacer formed by laminating colored layers of three primary colors on a part of the black matrix. A color liquid crystal display device having.