JP2000147234A - Color filter and liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an alignment division, vertical alignment (MVA) type liquid crystal display device having excellent display characteristics and a wide angle of a visual field by disposing specified spacers on a transparent electrode on black matrices formed by overlapping two or more of parts of red, green and blue colored layers. SOLUTION: Two or more of parts of red, green and blue colored layers are overlapped to form black matrices and spacers comprising part of a projecting pattern for divided alignment and/or the same material as the material of the pattern are disposed on a transparent electrode on the black matrices. Red pixels 1R, green pixels 1G and blue pixels 1B are formed and black matrices are formed by overlapping red and blue colored layers, red and green colored layers and blue and green colored layers. A black matrix is formed at the corner parts of a lattice by overlapping red, blue and green colored layers and the projecting pattern on the black matrix acts as spacers. One spacer is formed per pixel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a color filter having a projection pattern for division alignment and a spacer function, and a liquid crystal display device using the same.

[0002]

2. Description of the Related Art A conventional cell structure of a color liquid crystal display device basically comprises a substrate having a color filter and a counter substrate having a conductive film formed on a transparent substrate such as a TFT array substrate. . Here, as a normal method of manufacturing a color filter, for example, Japanese Patent Publication No. 2-1311
As shown in the publication, a black matrix is formed on a transparent substrate, and then red (R), green (G), and blue (B) pixels are formed on the transparent substrate, and an overcoat film is formed thereon as necessary. It is.

The black matrix indicates a light-shielding region arranged between pixels, and is provided to improve display contrast of a liquid crystal display device and to prevent light from being incident on an active element such as a TFT and causing a malfunction. Usually, the black matrix is formed by patterning a laminate of a metal such as chromium or nickel or an oxide thereof on a transparent substrate.

On this, a transparent electrode necessary for driving the liquid crystal by an electric field is formed. In assembling the cell, a rubbing treatment is performed after forming an alignment film on the transparent electrode in order to align the liquid crystal. After that, it is sent to a cell assembling step, is bonded to the counter substrate, and liquid crystal is injected.

In recent years, with the enlargement of the screen of the liquid crystal display device and the development of the liquid crystal display device to monitor applications, an increase in the viewing angle has been demanded.
Development of a VA (vertical alignment) liquid crystal display device using a negative type liquid crystal has progressed with respect to the positive type liquid crystal used in the conventional TN mode, and an MVA (alignment division vertical alignment) liquid crystal display device has been developed as an improved type. Developed (eg, ELECTRONIC
JOURNAL October 1997, page 33, or SOCIETY FOR INFORM
ATION DISPLAY INTERNATIONAL SYMPOSIUM DIGEST OF TE
CHNICAL PAPERS VOLUME XXIX, pp. 1077-1080). This M
VA liquid crystal display devices are characterized by a wide viewing angle. In order to divide the orientation of the color filters on the pixels, projections are provided on the surface of the TFT substrate and the color filter substrate to automatically control the liquid crystal alignment direction. It is something that is going on. In this method, the formation and configuration of the projection pattern for divisional alignment are technically important.

[0006]

Generally, in a liquid crystal display device, in order to maintain the thickness (cell gap) of a liquid crystal layer,
A plastic bead, a glass bead, or a glass fiber is interposed between two substrates for a liquid crystal display device and used as a spacer. Although spacers such as plastic beads are scattered in an airflow, it is difficult to disperse them uniformly and without agglomeration due to the influence of airflow and static electricity when the spacers such as plastic beads are scattered. When the spacers are aggregated, there is a disadvantage that cell gap unevenness occurs in the aggregated portions, and the display quality is likely to deteriorate.

Further, since a spacer is also present in a display area on the substrate for a liquid crystal display device (a light transmitting portion in a screen excluding a black matrix portion), light is scattered or transmitted by the spacer, so that the display of the liquid crystal display device is performed. There was also a problem that the quality deteriorated.

Further, since a projection pattern for divided orientation is formed on the color filter, the surface of the color filter becomes uneven, and it is difficult to obtain a sufficiently uniform cell gap with a conventional spacer such as plastic beads. There was a problem.

Further, in order to simplify the process and reduce the cost, the above black matrix is omitted, and instead, the black matrix is formed by overlapping a part of the adjacent colored layers. There is a problem that the portion becomes convex and it is difficult to obtain a uniform cell gap.

An object of the present invention is to provide a color filter which provides an MVA liquid crystal display device having excellent display characteristics and a wide viewing angle, and in particular, realizes a uniform cell gap and improves display quality. It is another object of the present invention to provide a color filter having improved productivity and good productivity.

[0011]

The object of the present invention is achieved by the following constitution.

(1) In a color filter in which at least a colored layer of a plurality of colors, a transparent electrode, and a projection pattern for divided orientation are laminated in this order on a transparent substrate, a part of the colored layer is overlapped with two or more colors to form a black matrix. And a spacer comprising a part of the projection pattern for split orientation and / or a spacer made of the same material as the projection pattern for split orientation is provided on the transparent electrode on the black matrix. .

(2) It has a black matrix in which a part of a colored layer is formed by overlapping two colors, and a part of a projection pattern for divided alignment on a transparent electrode on the black matrix, and / or Alternatively, the color filter according to (1), further comprising a spacer made of the same material as the projection pattern for divided alignment.

(3) It has a black matrix in which a part of a colored layer is formed by superposing two colors, and a third colored layer pattern is provided on the black matrix, and a transparent electrode is further formed thereon. (1) The color filter according to (1), wherein a spacer made of the same material as the transparent electrode and a part of the projection pattern for divided orientation and / or the projection pattern for divided orientation is formed.

(4) A black matrix in which a part of the colored layer is formed by overlapping two colors, a projection pattern for divided orientation is formed on the transparent electrode on the black matrix, and The color filter according to (1), wherein the same material as the third colored layer pattern, the transparent electrode, and the projection pattern for divided alignment is laminated on the black matrix to form a spacer.

(5) It has a black matrix in which a part of a colored layer is formed by superimposing three colors, and a part of a projection pattern for divided orientation on a transparent electrode on the black matrix, and / or The color filter according to (1), wherein a spacer made of the same material as the division alignment projection pattern is formed.

(6) It has a black matrix in which a part of the colored layer is formed by superimposing two colors and three colors, and is divided on the transparent electrode on the black matrix formed by superposing two colors. A projection pattern for alignment is formed, and a spacer made of the same material as the projection pattern for divisional alignment is formed on a transparent electrode on a black matrix formed by overlapping the three colors (1). The color filter described.

(7) The material for forming the projection pattern for divided orientation is electrically insulating.
The color filter according to (6).

(8) The projection pattern for divided alignment is made of a material in which a pigment is dispersed in a resin.
The color filter according to any one of (1) to (7).

(9) The color filter according to (8), wherein the pigment is an insulating white pigment.

(10) The pigment is titanium oxide, silicon oxide, aluminum oxide, calcium carbonate, magnesium oxide,
(9) It is made of one selected from lead oxide, chromium oxide, iron oxide, zirconia, and barium sulfate.
The color filter described.

(11) A liquid crystal display device using the color filter according to any one of (1) to (10).

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. The transparent substrate used for the color filter of the present invention is not particularly limited, and quartz glass,
Inorganic glasses such as borosilicate glass, aluminosilicate glass, soda lime glass having a silica-coated surface, and organic plastic films or sheets are preferably used.

First, a colored layer is laminated on a transparent substrate. The color filter is generally composed of a large number of picture elements, with pixels formed by each colored layer of three primary colors as one picture element. As the three primary colors, red (R), green (G), blue (B) or cyan (C), magenta (M), and yellow (Y) are usually used. It is formed by a colored layer.

As the coloring agent used in the coloring layer, organic pigments, inorganic pigments, dyes and the like can be suitably used. Further, various additives such as an ultraviolet absorber, a dispersing agent and a leveling agent are added. You may. As the pigment, Color Index Nos. 9, 97, 122, 123, and 14 as red (R)
9, 168, 177, 180, 192, 215, etc. Color Index No. 7, 36 as blue (G) Blue (B) as green (G)
Color Index Nos. 15, 22, 60, 64, etc. are generally used. A wide range of dispersants such as surfactants, pigment intermediates, dye intermediates, and polymer dispersants are used.

The resin used for the colored layer is not particularly limited, but may be an epoxy resin, an acrylic resin, a urethane resin, a polyester resin, a polyimide resin,
A photosensitive or non-photosensitive material such as a polyolefin resin can be employed. Since the colored layer of the present invention can be finely processed and is preferably formed of a thermally stable and mechanically strong resin, it is preferable to use an acrylic resin, a polyimide resin, or an epoxy resin. Particularly preferred.

Here, the polyimide resin is not particularly limited, but usually a polyimide precursor having a structural unit represented by the following general formula as a main component is imidized by heating or an appropriate catalyst. Are preferably used.

[0028]

Embedded image Here, n in the above general formula is a number of 1 to 2. R1 is
It is an acid component residue, and R1 represents a trivalent or tetravalent organic group having at least two carbon atoms. From the viewpoint of heat resistance, R1 is preferably a trivalent or tetravalent group containing a cyclic hydrocarbon, an aromatic ring or an aromatic heterocyclic ring and having 6 to 30 carbon atoms. Examples of R1 include those derived from phenyl, biphenyl, terphenyl, naphthalene, perylene, diphenylether, diphenylsulfone, diphenylpropane, benzophenone, biphenyltrifluoropropane, cyclobutyl, cyclopentyl, and the like. But are not limited thereto.

R2 represents a divalent organic group having at least two carbon atoms. From the viewpoint of heat resistance, R2 is preferably a divalent group containing a cyclic hydrocarbon, an aromatic ring or an aromatic heterocyclic ring and having 6 to 30 carbon atoms. Examples of R2 include phenyl, biphenyl, terphenyl, naphthalene, perylene, diphenylether, diphenylsulfone, diphenylpropane, benzophenone, biphenyltrifluoropropane, diphenylmethane, and cyclohexylmethane. However, the present invention is not limited thereto. The polymer having the structural unit represented by the general formula (1) as a main component may be a copolymer in which R1 and R2 are each composed of one or two or more. There may be.

As the acrylic resin, about 3 to 5 kinds of acrylic acrylate, methacrylic acid, alkyl acrylate or alkyl methacrylate such as methyl acrylate or methyl methacrylate, cyclic acrylate or methacrylate, hydroxyethyl acrylate or methacrylate are used. It is particularly preferable to use a resin polymerized to a molecular weight of about 5,000 to 200,000 by using the above monomer. It should be noted that the acrylic resin material is not limited to photosensitive or non-photosensitive, but a photosensitive material is preferably used from the viewpoint of ease of fine processing. In the case of a photosensitive resin, a composition comprising an acrylic resin, a photopolymerizable monomer, and a photopolymerization initiator is preferably used. Photopolymerizable monomers include difunctional, trifunctional, and polyfunctional monomers, and bifunctional monomers include 1,6-hexanediol diacrylate, ethylene glycol diacrylate, neopentyl glycol diacrylate, and triethylene glycol acrylate. There are trifunctional monomers such as trimethylolpropane triacrylate, pentaerythritol triacrylate, and tris (2-hydroxyethyl) isocyanate, and polyfunctional monomers such as ditrimethylolpropane tetraacrylate.
Examples include dipentaerythritol penta and hexaacrylate. As the photopolymerization initiator, benzophenone, thioxanthone, imidazole, triazine and the like are used alone or in combination.

As a method for forming a colored layer, a paste containing a colorant is applied on a substrate, 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 coloring paste, a dip method, a roll coater method, a spinner method, a die coating method, a wire bar coating method, or the like is suitably used, and thereafter, heating and drying using an oven or a hot plate ( Semi-cure). The semi-curing conditions vary depending on the resin used, the solvent, and the amount of the paste applied.
It is preferable to heat at 0 to 200 ° C. for 1 to 60 minutes. In addition, a colored layer may be formed by a transfer method.

In the colored paste film thus obtained, after a photoresist film is formed thereon when the resin is a non-photosensitive resin, and when the resin is a photosensitive resin, After forming an oxygen barrier film as required, exposure and development are respectively performed. After removing the photoresist film and the oxygen barrier film, the film is dried by heating (this cure).

The curing conditions are slightly different depending on the coating amount when a polyimide resin is obtained from the precursor, but it is generally heated at 200 to 300 ° C. for 1 to 60 minutes. In the case of an acrylic resin, the curing condition is generally to heat at 150 to 300 ° C. for 1 to 60 minutes. Through the above process, a patterned colored layer is formed on the substrate.

The color filter of the present invention is characterized in that a black matrix is formed by superimposing a plurality of colors of a part of a colored layer (hereinafter referred to as a color superimposed black matrix). After forming the first color layer on the transparent substrate over the entire surface as described above, unnecessary portions are removed by photolithography, and a desired first color pattern is formed. Is repeated to form a second color pattern and a third color pattern. At this time, a black matrix is formed by overlapping a part of the coloring layers with each other. That is, the color overlap portion becomes a black matrix.

The color superimposed black matrix is formed by superimposing two or three colored layers. That is, all black matrices may be superimposed with two colors, or all black matrices may be superimposed with three colors. However, from the viewpoint of liquid crystal injecting property, the area ratio of the two-color superimposed black matrix to the total black matrix is preferably 50% or more, and more preferably 75% or more.
% Or more.

The pattern of the black matrix is formed so as to fill the space between the pixels, and may be a stripe, a lattice, a staggered lattice, or the like. A grid pattern is most preferable in increasing the height.

Conventionally, the black matrix has been formed by patterning a laminate of a metal such as chromium or nickel or an oxide thereof on a transparent substrate. It is particularly preferable in terms of cost reduction, waste treatment cost reduction, environmental pollution reduction, and the like.

The thickness of the colored layer is 0.5 to 3.0 μm.
m is preferred, more preferably 1.0 to 2.5 μm, and still more preferably 1.5 to 2.0 μm.

The color overlap width is preferably 2 to 60 μm, more preferably 5 to 45 μm, and still more preferably 1 to 60 μm.
0 to 30 μm. The color overlap width is the color overlap black matrix width. If the color superposition width is smaller than this range, the color superposition accuracy is insufficient, and it is difficult to form a complete black matrix. Also, if the color overlap width is wider than this range, the aperture ratio decreases, the transmittance in the liquid crystal panel decreases,
The problem of insufficient panel brightness is likely to occur.

The total thickness of the color superimposed black matrix is
Preferably from 1.0 to 9.0 μm, more preferably from 2.0 to 9.0 μm.
It is 7.5 μm, more preferably 3.0 to 6.0 μm. If the film thickness is smaller than 1.0 μm, it is not preferable because it is difficult to form a spacer having a sufficient height and the light-shielding property is insufficient. On the other hand, when the film thickness is larger than 9.0 μm, although a spacer having a sufficient height can be formed, the flatness of the color filter is likely to be sacrificed, and a level difference or display unevenness is likely to occur. Is not preferred.

The light-shielding property of the black matrix is
Although it is expressed by an OD value, it is preferably 1.0 or more, more preferably 2.0 or more in order to improve the display quality of the liquid crystal display device. In order to increase the OD value of the color superimposed black matrix, it is more preferable to superimpose three colors, but in the case of superimposing two colors, it is preferable to superimpose blue and red or cyan and magenta.

Openings made of one colored layer (20 to 400) μm × (20 to 400) μm are provided between the color superimposed black matrices, and the openings function as pixels of each color. Examples of the pixel arrangement include a triangle arrangement, a mosaic arrangement, and a stripe arrangement, but are not particularly limited.

It is preferable to form a frame-shaped black matrix by laminating colored layers in the same manner also around the screen.

Thereafter, if necessary, a transparent protective film may be formed. The formation of the protective layer is disadvantageous in that the production process of the color filter increases and the production cost increases, but on the other hand, it is advantageous in controlling the spacer height, preventing elution of impurities from the color filter, and flattening the surface. Yes, preferred. The thickness of the protective film is not particularly limited.
2.0 μm is preferred, and 0.1 to 0.5 μm is more preferred.

Next, a transparent electrode is provided. The transparent electrode is I
TO, tin oxide, zinc oxide, or the like can be stacked using a technique such as vacuum evaporation, sputtering, or CVD.

Finally, a projection pattern for divided orientation is formed. At the same time, a spacer made of the same material as a part of the projected pattern for divided orientation or the same as the projected pattern for divided orientation is provided on the color superimposed black matrix. That is, a part of the projection pattern for divided alignment may be provided on the transparent electrode on the black matrix in which two or three colors of the colored layers are superimposed to have the function of a spacer, or the projection for divided alignment may be provided. When forming the pattern, a spacer pattern may be formed simultaneously with the same material separately from the division alignment projection pattern. Of course, both may be formed simultaneously. Further, after providing a spacer pattern by a third color layer on the two-color superimposed black matrix, a transparent electrode and a part of the split alignment projection pattern or the same material as the split orientation projection pattern is further formed thereon. May be formed.

Compared with the conventional method in which three colors are laminated while aligning a dot pattern for a spacer on a black matrix such as a resin or metal like a conventional color filter, the color filter of the present invention has already Since the spacer pattern is formed on the black matrix, the number of laminations for forming the spacer can be reduced. For this reason, the spacer alignment work is easy and the productivity is excellent.

In the conventional color filter, a colored layer is partially overlapped on a black matrix in order to prevent color dropout, but this limits the area in which a dot pattern for a spacer can be formed, and the pattern design is free. The degree is small. For this reason, a small pattern has to be formed unavoidably, resulting in a case where the pattern is chipped or a case where the spacers cannot be laminated as designed due to positional displacement.

On the other hand, since the color filter of the present invention does not have such a limitation on the spacer forming region, the degree of freedom in design is large, and for example, it is possible to increase the spacer area up to the same area as the black matrix. Yes, and the spacer pattern can be freely arranged basically anywhere on the black matrix. For this reason, pattern chipping and displacement can be improved, processing accuracy is good, and productivity is particularly excellent.

The projections for the divisional alignment need only be formed on the pixels, but as an example of the color filter of the present invention, by forming a part of the projections for the divisional alignment also on the color superimposed black matrix, It gives a role as a spacer. In particular, when a color superimposed black matrix is used, liquid crystal alignment disorder is likely to occur on and around the black matrix, but by forming a projection pattern for divided alignment on the black matrix, alignment disorder can be prevented. In addition, since the divided orientation works effectively, the display characteristics are particularly improved, which is more preferable.

First, the projection pattern for divided orientation will be described. As an example of the sectional shape of the projection pattern for divided orientation, a triangular, semicircular or trapezoidal continuous linear pattern, a triangular pyramid or a triangular conical, a trapezoidal conical dot-shaped pattern, or the like is preferably used. . The pattern is not particularly limited as long as the alignment direction of the liquid crystal molecules on the pixel can be divided into two or more.
For example, if the projection for division orientation has a triangular or trapezoidal cross section, it can be divided and oriented in two directions by two slopes, and if it is a triangular wave (a polygonal line), it can be divided into four. If the projection for divided orientation is a pyramid, the number of divided orientations is determined by the number of slopes. On the other hand, an infinite split orientation can be obtained with a cone.

The material used for the projection pattern for divided alignment is
Although not particularly limited, a material similar to the resin used for the coloring layer can be used. Further, from the viewpoint of pattern processability and mechanical strength, a material in which a pigment is dispersed in a resin is more preferable. As the pigment, an insulating white pigment is more preferable, for example, titanium oxide, silicon oxide, aluminum oxide, calcium carbonate, magnesium oxide, lead oxide,
It is particularly preferred that the material be selected from chromium oxide, iron oxide, zirconia, and barium sulfate. As a method of forming the pattern of the protrusion, the same method as the method of forming the pattern of the colored layer can be used.

The height of the split alignment projection is 0.5 μm to 6 μm.
m, more preferably in the range of 0.6 μm to 3 μm. If the projection height is less than 0.5 μm, the effect of the split orientation is not sufficient, which is not preferable. On the other hand, if the projection height exceeds 6 μm, coating unevenness occurs, it becomes difficult to form projections by photolithography, and it hinders liquid crystal injection, which is not preferable. In addition, it is preferable that the height of the division alignment projection is higher than the thickness of the coloring layer from the viewpoint of liquid crystal injectability. The ratio of the two (height of the projection for split alignment /
(The thickness of the coloring layer) is preferably 1.0 or more, and more preferably 1.2 or more.

Next, the case where a part of the projection pattern for division alignment provided on the color superimposed black matrix is used as a spacer, and the case where the spacer is formed of the same material as the projection pattern for division alignment will be described. The shape of the spacer, that is, the shape of the cross section when the spacer is cut along a plane parallel to the substrate is not particularly limited, but a circle, an ellipse, a polygon having rounded corners, a cross, a T-shape,
L-shaped or U-shaped is preferred. In the case where the spacer is formed by lamination with the lower colored layer, the shape of the spacer in each layer is not particularly limited, but may be a circle, an ellipse, a polygon having rounded corners, a cross, a T-shape, or an L-shape. Preferably, these may be arbitrarily laminated to form a spacer.

The height of the spacer is preferably 1 to 9 μm, more preferably 2 to 8 μm. If the height of the spacer is less than 1 μm, it is difficult to secure a sufficient cell gap. On the other hand, if the thickness exceeds 9 μm, the cell gap of the liquid crystal display device becomes too large, and the voltage required for driving becomes undesirably high. Note that the height of the spacer means a difference in height (step) between the pixel at the opening of the color filter and the uppermost surface of the adjacent spacer, focusing on one spacer. If there is unevenness in the height within a pixel, it indicates the value when the step is the largest in that pixel.

The area and location of each spacer are greatly affected by the structure of the liquid crystal display device. Constraints of the area of the non-display region 1 in the pixel in a color filter having a fixed spacer, the spacer area per one screen is preferably 10μm ² ~1000μm ^2. More preferably, 20 μm ^{2 to} 25
0 μm ² . Spacer area per one is 10
When it is smaller than ² μm ² , it is difficult to form and laminate a precise pattern, and the spacer may be broken by pressure application during manufacturing of the liquid crystal display device. When the area of one spacer is larger than 1000 μm ² ,
The spacer makes orientation difficult. In addition, although it depends on the shape of the spacer portion, it is difficult to dispose the spacer in the screen only on the black matrix (non-display area), which is not preferable.

The spacer area referred to here is the top surface of the spacer formed on the color filter and refers to the surface of the portion that comes into contact with the counter substrate when the liquid crystal display device is manufactured. The area can be determined by taking a picture of the surface of the color filter by reflection (reflection) with an optical microscope and calculating the area of the light reflected portion excluding the black portion of the tapered portion of the spacer pattern. Of course, when a spacer is also formed on the counter substrate, it also indicates the area of a portion in contact with the spacer.

The number of spacers is 0.1 per pixel.
It is preferable to form 10 to 10, more preferably 0.
There are two or three. The spacer area per pixel is preferably 10 to 1000 μm ² , more preferably 20 to 1000 μm ² .
250 [mu] m ^2, more preferably from 30 to 150 [mu] m ^2.

In order to improve the uniformity of the distance between the two substrates for the liquid crystal display device held by the spacer in the screen, the spacer is also formed in the frame-shaped black matrix around the screen and in the non-display area outside the screen. Is preferred. Since the spacers outside the screen and on the frame do not appear in the display area, the area per spacer is preferably equal to or larger than the area of the spacers in the screen to facilitate formation of the spacers. .

In the color filter of the present invention, since the uppermost layer of the spacer is disposed on the transparent conductive layer, by selecting an electrically insulating material for the spacer, the color filter can be bonded to the TFT substrate. Even when misalignment occurs during alignment, it is possible to avoid a defect in which the transparent conductive layer on the color filter is short-circuited to the TFT electrode substrate facing the same. The prevention of the short circuit is highly effective in a liquid crystal display device having a high aperture ratio in which electrodes and wirings are densely arranged. The volume resistance value of the spacer is preferably 10 ⁷ Ω · cm or more, and more preferably 10 ⁹ Ω · cm or more.

Preferred examples of the color filter of the present invention are described below. (A) a black matrix in which a part of a colored layer is formed by superimposing two colors, and a part of a projection pattern for split alignment on a transparent electrode on the black matrix, and / or a split alignment; Color filter formed with spacers made of the same material as the projection pattern.

(B) a black matrix in which a part of the colored layer is formed by overlapping two colors, and a pattern of the third colored layer (being a spacer base) is provided on the black matrix; A color filter further comprising a transparent electrode and a part of the projection pattern for split orientation and / or a spacer made of the same material as the projection pattern for split orientation.

(C) a black matrix in which a part of a colored layer is formed by superposing two colors, a projection pattern for divided alignment is formed on a transparent electrode of the black matrix, and A color filter formed by laminating the same material as the pattern of the third colored layer (being the base of the spacer), the transparent electrode, and the projection pattern for divided alignment, to form a spacer.

(D) It has a black matrix in which a part of the colored layer is formed by superimposing three colors, and a part of the projection pattern for division alignment on the transparent electrode of the black matrix, and / or A color filter in which spacers made of the same material as the alignment projection pattern are formed.

(E) having a black matrix in which a part of the colored layer is formed by superimposing two colors and three colors;
Forming a projection pattern for split orientation on the transparent electrode on the black matrix formed by superimposing the two colors;
In addition, a color filter in which a spacer made of the same material as the projection pattern for division alignment is formed on the transparent electrode on the black matrix formed by overlapping the three colors.

Among them, in order to form the projection pattern for divided orientation on the transparent electrode on the color superimposed black matrix with good processing accuracy and without any chipping, the projection pattern for divided orientation is provided on the transparent electrode of the two color superimposed black matrix. It is preferable to provide them, and therefore, the above-mentioned constitutions (A), (C) and (E) are particularly preferred.

The pattern of the third colored layer (being a spacer base) is a pattern smaller than the width of the color superimposed black matrix, and is a part of the division alignment projection pattern formed thereon and / or the division. This serves as a base for forming a spacer made of the same material as the alignment projection pattern.

Next, an example of a method of manufacturing an electrode substrate having a TFT element will be described below. A chromium thin film is formed on an alkali-free glass substrate by sputtering, and the gate electrode is patterned by photolithography. Next, a silicon nitride film, an amorphous silicon film as an insulating film, and a silicon nitride film as an etching stopper are successively formed by plasma CVD. Next, the silicon nitride film serving as an etching stopper is patterned by photolithography. An n + amorphous silicon film is formed and patterned for the TFT terminal to make an ohmic contact with the metal electrode, and an ITO film to be a display electrode is formed and patterned. Further, aluminum is applied as a wiring material by sputtering, and signal wiring and a metal electrode of a TFT are formed by photolithography. Using the drain electrode and the source electrode as masks, n
+ Remove the amorphous silicon film by etching
An electrode substrate provided with an element is obtained. In the case of a reflective liquid crystal display element, it is preferable that the display electrode is made of a material having a high reflectance such as aluminum or silver. In addition, it is preferable to provide a projection for alignment division on the opposing electrode substrate so as to correspond to the projection for alignment division provided on the color filter. Further, a spacer may be formed on the electrode substrate to make the cell gap uniform.

The panel assembly will be described. First, an alignment film is provided on a color filter, and an alignment film is similarly provided on an electrode substrate having a thin film transistor facing the color filter. After the two substrates are bonded to each other using a sealant such as an epoxy adhesive, a vertically aligned liquid crystal is injected from an injection port provided in the seal portion. After injecting the liquid crystal, the inlet is sealed, and a polarizing plate is attached to the outside of the substrate to manufacture a liquid crystal display device.

FIG. 2 shows an example of a plan view of the color filter of the present invention. Black matrix 14 and pixel (1
R, 1G, 1B) after forming an ITO transparent electrode on
A polygonal projection 11 having a trapezoidal cross section is formed so as to divide the pixel. Projections are also formed on the opposing electrode substrate so as to be alternately arranged with the projections on the color filter.

The color filter of the present invention and a liquid crystal display device using the same are provided with a personal computer, a word processor,
It is used for display screens of engineering workstations, navigation systems, liquid crystal televisions and the like, and is also suitably used for liquid crystal projection and the like. Further, in the field of optical communication and optical information processing, it is suitably used as a spatial modulation element using a liquid crystal. A spatial modulation element modulates the intensity, phase, polarization direction, etc. of light incident on the element according to an input signal to the element, and is used for real-time holography, a spatial filter, incoherent / coherent conversion, and the like. It is.

[0073]

EXAMPLES Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited to these examples.

(Preparation of Polyimide Precursor)
4,4'-biphenyltetracarboxylic dianhydride 14
4.1 g was mixed with 1095 g of γ-butyrolactone and 209 g of N-methyl-2-pyrrolidone, and 95.1 g of 4,4′-diaminodiphenyl ether and 6.2 g of bis (3-aminopropyl) tetramethyldisiloxane were added. After reacting at 70 ° C. for 3 hours, 2.96 g of phthalic anhydride
Was added and reacted at 70 ° C. for 1 hour to obtain a polyimide precursor (polyamic acid) solution.

(Measurement Method of Volume Resistance Value) A target material is coated to a thickness of 2 μm on a glass substrate on which an aluminum thin film is deposited. An aluminum electrode having a diameter of 15 mm is further deposited on the coating film. A direct current of 1 V was applied between the two electrodes sandwiching the coating film, and the volume resistance was determined from the current value and the thickness of the coating film 5 minutes after the application of the voltage.

Example 1 (Preparation of Colored Layer) As red, green and blue pigments,
dex No.65300 Pigment Red 177 dianthraquinone pigment, Color Index No.74265 Pigment Green 36
Color Inde, a phthalocyanine green pigment represented by
x A phthalocyanine blue pigment represented by No. 74160 Pigment Blue 15-4 was prepared. The pigments were mixed and dispersed in the polyimide precursor solution to obtain three kinds of colored pastes of red, green and blue.

Next, using this colored paste, red, green,
A blue coloring layer was formed. First, a red paste was applied on a transparent alkali-free glass substrate, and semi-cured at 120 ° C. for 20 minutes. Then, after applying a positive type photoresist ("Microposit" RC100 30cp manufactured by Shipley Co., Ltd.) with a spinner, 8
Dry at 0 ° C. for 20 minutes. Exposure using a photomask,
While immersing the substrate in a 2% by weight aqueous solution of tetramethylammonium hydroxide and rocking, the development of the positive photoresist and the etching of the polyimide precursor were simultaneously performed. Thereafter, the positive photoresist was stripped with methyl cellosolve acetate, and cured at 300 ° C. for 30 minutes.

The thickness of the red coloring layer was 1.5 μm. The pattern of the red coloring layer corresponds to the position (1R) of the red pixel portion in FIG.
And, a pattern (2, 3, 5, 6, 7, 8, 9) for forming a color superimposed black matrix was formed.

After the substrate was washed with water, the green coloring layer was similarly
The position (1G) of the green pixel portion in FIG. 1 and the positions (3, 4, 5, 7,
8, 9, 10). The thickness of the green coloring layer was 1.5 μm in the pixel portion.

Further, after the substrate was rinsed with water, the blue colored layer was similarly coated with the blue pixel portion position (1B) in FIG. 1 and the color superposition black matrix forming pattern position (2, 4, 5, 6, 6).
7, 9, 10). The thickness of the blue coloring layer was 1.5 μm in the pixel portion.

Through the above steps, the red pixel (1R), the green pixel (1G), the blue pixel (1B), the red and blue color superimposed black matrix (2, 6), and the red and green color superimposed black matrix ( 3, 8), two color superimposed black matrices of green and blue (4, 10), grid corners (5, 7,
9) A red, green and blue three-color superimposed black matrix was formed. The line width of the black matrix is 20 μm on the long side,
The short side was 30 μm. The sizes 5, 7, and 9 in FIG. 1 are 20 μm (long side width direction) × 30 μm (short side width direction).
It is a corner and serves as a base for the spacer.

On top of this, a film thickness of 1
An ITO film transparent electrode having a surface resistance of 50 nm and a surface resistance of 20 Ω / □ was formed.

Further, a polyimide precursor solution was applied, and 1
Semi-cure at 35 ° C. for 20 minutes. Thereafter, a positive photoresist was applied and dried at 80 ° C. for 20 minutes. After exposing through a photomask and immersing in a 2% by weight aqueous solution of tetramethylammonium hydroxide to simultaneously perform development of the photoresist and etching of the polyimide precursor, the photoresist is peeled off with methyl cellosolve. For 30 minutes to form a triangular-wave-like split alignment projection pattern (11) shown in FIG.

The sectional shape of the projection for divisional alignment on the pixel is a trapezoid having a lower side of 12 μm and an upper side of 8 μm and a thickness of 2.0 μm.
And In FIG. 2, the protrusion patterns on the three-color superimposed black matrix (positions 5, 7, and 9 in FIG. 1) act as spacers. That is, one spacer was formed per pixel. The area of the top of the spacer in contact with the counter substrate was about 120 μm ² per pixel.
The height of the spacer, which is the height from the surface of the ITO layer provided on the blue pixel to the top of the spacer, was within the target of 3.9 μm ± 0.1 μm. Thus, the color filter of the present invention was obtained.

(Preparation of Electrode Substrate) A chromium thin film was formed on an alkali-free glass substrate by sputtering, and was patterned into a gate electrode by photolithography. Next, the thickness of the insulating layer is 700 n by plasma CVD.
A silicon nitride film having a thickness of 100 nm, an amorphous silicon film having a thickness of 100 nm as a channel layer, and a silicon nitride film having a thickness of 500 nm were successively formed as an etching stopper layer. Next, the silicon nitride film of the etching stopper layer was patterned by photolithography. An n + amorphous silicon film for forming an ohmic contact between the TFT terminal and the metal electrode was formed. An ITO film serving as a display electrode was formed thereon and patterned. Further, a film of aluminum as a wiring material was formed by sputtering, and signal wiring and a metal electrode of a TFT were formed by photolithography. Using the drain electrode and the source electrode as a mask, the n + amorphous silicon film in the channel portion was removed by etching to obtain an electrode substrate having a TFT element.

(Production and Evaluation of Color Liquid Crystal Display) A vertical alignment film was provided on the color filter of the present invention. Similarly, a vertical alignment film was provided on the electrode substrate provided with the opposed thin film transistor. Protrusions similar to the polygonal linear protrusions on the color filter were also arranged on the opposing electrode substrate. However, when they were bonded to the color filter, they were shifted by a half pixel pitch so that the protrusions were arranged between adjacent protrusions on the color filter. After bonding the two substrates together using an epoxy adhesive as a sealant, a vertically aligned liquid crystal was injected from an injection port provided in the seal portion. The liquid crystal injection speed was high, and the liquid crystal injection properties were very good. After injecting liquid crystal,
The injection port was sealed, and a polarizing plate was attached to the outside of the substrate to produce a liquid crystal display device.

The liquid crystal display had good liquid crystal alignment, no cell gap unevenness, and good image quality. Further, since there was no spacer in the light transmitting portion, there was no light leakage due to the spacer. Further, there was no portion where the transparent conductive layer on the color filter and the opposing electrode substrate were short-circuited by the spacer, and the result was good. The volume resistivity of the projection material for divided orientation used as a spacer is 10 ¹³ Ω ·
cm and insulating properties.

Example 2 In the same manner as in Example 1, red, green and blue colored layers were formed.
However, the red colored layer is located at the position (1R) of the red pixel portion in FIG.
And the positions (2, 3, 5, 6, 6, 6 ′, 7, 8, 8 ′, 9, 10,
10 '). In addition, the green coloring layer includes the position (1G) of the green pixel portion in FIG. 3 and the positions (3, 4, 5, 6, 7, 8, 9,
10). In addition, the blue colored layer includes the position (1B) of the blue pixel portion in FIG. 3 and the positions (2, 4, 5, 6, 6 ′, 7, 8,
8 ', 9, 10, 10').

Through the above steps, the red pixel (1R), green pixel (1G), blue pixel (1B), red and blue color superimposed black matrix (2, 6 ', 8', 10 '), and red A green color superimposed black matrix (3), a green and blue color superimposed black matrix (4), and a red, blue, green three color superimposed black matrix (5, 6, 7, 8, 9, 10) were formed. . As in Example 1, the line width of the black matrix was 20 μm on the long side and 30 μm on the short side.

In the same manner as in the first embodiment, an ITO
A transparent electrode for the film and a projection pattern (11) for triangular-wave division alignment shown in FIG. 4 were formed.

The projection for divisional alignment on the pixel had a trapezoidal shape with the lower side of the cross section being 12 μm and the upper side being 8 μm, and the thickness was 2.0 μm. In FIG. 4, the projection pattern on the three-color superimposed black matrix (positions 5, 7, and 9 in FIG. 1) acts as a spacer. That is, one spacer was formed per pixel. The area of the top of the spacer in contact with the counter substrate was about 120 μm ² per pixel. The height of the spacer, which is the height from the surface of the ITO layer provided on the blue print to the top of the spacer, is the target of 3.
It was within 9 ± 0.1 μm. Thus, the color filter of the present invention was obtained.

A liquid crystal display device was manufactured in the same manner as in Example 1. The liquid crystal injection properties were good. The liquid crystal display device
The orientation of the liquid crystal was good, there was no cell gap unevenness, and the image quality was good. Further, since there was no spacer in the light transmitting portion, there was no light leakage due to the spacer. Furthermore, there was no portion where the transparent conductive layer on the color filter and the opposing electrode substrate were short-circuited by the spacer, and the result was good.

Example 3 In the same manner as in Example 1, red, green and blue colored layers were formed.
The line width of the black matrix was 20 μm on the long side and 30 μm on the short side. Next, in the same manner as in Example 1, after forming an ITO film transparent electrode thereon, a triangular-wave-shaped split alignment projection pattern (12) shown in FIG. 6 was formed. In addition, the same material is used to form a three-color superimposed black matrix (5 in FIG. 1,
A dot-like pattern (13) was formed in the upper center portion (positions 7 and 9).

The cross section of the projection pattern for divided alignment has a trapezoidal shape with a lower side of 12 μm and an upper side of 8 μm on the pixel and a thickness of 2.0 μm.
μm. The dot pattern has a lower side of 12 μm (long side width direction) × 18 μm (short side width direction) and an upper side of 8 μm
(Long side width direction) × 14 μm (short side width direction). The dot pattern acts as a pacer. That is, one spacer was formed for each pixel. The area of the top of the spacer in contact with the counter substrate is about 11
It was 0 μm ² . The height of the spacer, which is the height from the surface of the ITO layer provided on the blue print to the top of the spacer, was within the target of 3.9 ± 0.1 μm. Thus, the color filter of the present invention was obtained.

A liquid crystal display device was manufactured in the same manner as in Example 1. Excellent liquid crystal injection properties, and liquid crystal could be injected into the cell in a short time. In the liquid crystal display device, the orientation of the liquid crystal is good,
Further, there was no cell gap unevenness and the image quality was good. In addition, since there was no spacer in the light transmitting portion, there was no light leakage due to the spacer, and there was no portion where the transparent conductive layer on the color filter and the opposing electrode substrate were short-circuited by the spacer.

Example 4 In the same manner as in Example 1, red, green and blue colored layers were formed.
However, the red colored layer is located at the position (1R) of the red pixel portion in FIG.
And, it was formed at the position (2, 3, 4, 5, 6, 7, 8, 9, 10) of the pattern for forming a color superimposed black matrix. The green colored layer is located at the position (1
G), and the position (2, 3, 4, 5, 6, 7, 8, 9, 10) of the pattern for forming a color superimposed black matrix. The blue colored layer is located at the position (1B) of the blue pixel portion in FIG. 1 and at the position (2, 3, 4, 5, 6, 7, 8, 9, 1) of the pattern for forming a color superimposed black matrix.
0).

Through the above steps, a red pixel (1R), a green pixel (1G), a blue pixel (1B) and a red-blue-green three-color superimposed black matrix (2, 3, 4, 5, 6, 7, 8, 9, 1
0) was formed. The line width of the black matrix was 20 μm on the long side and 30 μm on the short side.

In the same manner as in Example 1, an ITO
After forming the film transparent electrode, a projection pattern (11) for triangular-wave division alignment shown in FIG. 5 was formed.

The projection for division alignment on the pixel had a trapezoidal shape with a lower side of 12 μm and an upper side of 8 μm in cross section and a thickness of 2.0 μm. Three-color superimposed black matrix (5, 7, 9 in FIG. 1)
The projection pattern on () position acts as a spacer. That is, one spacer is formed for each pixel, and the area of the top of the spacer that contacts the opposing substrate is about 1
It was 20 μm ² . Further, the projection pattern on the three-color superimposed black matrix (positions 2, 3, and 4 in FIG. 1) also functions as a spacer. That is, two spacers were formed per pixel, and the area of the top of the spacer that was in contact with the opposing substrate was about 80 μm ² per pixel. Thus, there are a total of three spacers per pixel, and the total area of the tops of the spacers in contact with the counter substrate is:
The total was about 280 μm ² per pixel. The height of the spacer, which is the height from the surface of the ITO layer provided on the blue pixel to the top of the spacer, is 3.9 ± the target.
It was within 0.1 μm. Thus, the color filter of the present invention was obtained.

In the same manner as in Example 1, a liquid crystal display device was manufactured. The liquid crystal display device had good liquid crystal alignment, no cell gap unevenness, and good image quality. Further, since there was no spacer in the light transmitting portion, there was no light leakage due to the spacer. Furthermore, there was no portion where the transparent conductive layer on the color filter and the opposing electrode substrate were short-circuited by the spacer, and the result was good.

Comparative Example 1 A color filter was produced in the same manner as in Example 3. However, a three-color superimposed black matrix (5, 7,
9), dot-shaped spacers (13 in FIG. 6)
Was not provided. Further, a liquid crystal display device was manufactured in the same manner as in Example 4, except that a polystyrene sphere spacer having a diameter of 4.0 μm was sprayed on the color filter before the color filter was bonded to the electrode substrate.

The liquid crystal injection property and the short circuit between the transparent conductive layer on the color filter and the opposing electrode substrate were good. However, since the pixel portion had a spacer, light was leaked due to the spacer. At the time of bonding the electrode substrate and the polystyrene sphere, the projections for division alignment and the color superimposed black matrix were crushed, and the alignment of the liquid crystal was disturbed and cell gap unevenness occurred in the vicinity thereof, resulting in poor image quality.

Comparative Example 2 (Preparation of Resin Black Matrix) A carbon black mill base having the following composition was dispersed at 7000 rpm for 30 minutes using a homogenizer, and glass beads were filtered to prepare a black paste.

Carbon black mill base Carbon black (MA100, manufactured by Mitsubishi Chemical Corporation) 4.6 parts Polyimide precursor solution 24.0 parts N-methyl-2-pyrrolidone 61.4 parts Glass beads 90.0 parts Alkali-free glass The black paste was applied on the substrate using a spinner and semi-cured in an oven at 135 ° C. for 20 minutes. Subsequently, a positive photoresist ("Microposit" SRC100 30 cp manufactured by Shipley Co., Ltd.) was applied by a spinner and dried at 90 ° C. for 10 minutes. The photoresist film thickness was 1.5 μm. Exposure machine PLA-5 manufactured by Canon Inc.
Using 01F, exposure was performed through a photomask.

Next, 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 swung so as to make one reciprocation in a width of 10 cm in 5 seconds, thereby simultaneously developing the positive photoresist and etching the polyimide precursor. The development time was 60 seconds. Thereafter, the positive type photoresist was stripped with methyl cellosolve acetate, and further cured at 300 ° C. for 30 minutes. In this way, the film thickness is 0.9 μm, and the pattern (2, 3, 4, 5, 6, 7, 8,
A grid-like resin black matrix having a long side line width of 20 μm and a short side line width corresponding to (9, 10) was provided. The OD value of the resin black matrix was 3.3.

(Formation of coloring layer) Dianthraquinone pigment represented by Color Index No. 65300 Pigment Red 177 as a red, green and blue pigment, Color Index No. 74265 Pig
A phthalocyanine green pigment represented by ment Green 36 and a phthalocyanine blue pigment represented by Color Index No. 74160 Pigment Blue 15-4 were prepared. The above pigments were mixed and dispersed in the polyimide precursor solution 1 used for the black matrix, respectively, to obtain three kinds of colored pastes of red, green and blue. First, a blue paste was applied on a resin black matrix substrate and semi-cured at 120 ° C. for 20 minutes. Then, a positive photoresist ("Miley" manufactured by Shipley Co., Ltd.)
croposit "SRC100 30cp) with spinner, 90 ℃
For 10 minutes. Exposure was performed using a photomask, and while the substrate was immersed and rocked in a 2% by weight aqueous solution of tetramethylammonium hydroxide, development of a positive photoresist and etching of a polyimide precursor were simultaneously performed. Thereafter, the positive photoresist was stripped with methyl cellosolve acetate to form a striped blue colored layer pattern in the long side direction. Thereafter, curing was performed at 300 ° C. for 30 minutes. The thickness of the red coloring layer was 2.0 μm. Thus, a red pixel was formed in the 1R portion of FIG.

After the substrate was washed with water, striped green and blue colored layer patterns were formed in the same manner as the red colored layer so that the green pixels were placed in the 1G and 1B portions of FIG.
Blue pixels were formed. Both film thicknesses were 2.0 μm.

At the time of forming each colored layer pattern, a resin black matrix (positions 5, 7, and 9 in FIG. 1)
Although the spacers were simultaneously formed by laminating the dot patterns composed of the respective colored layers, the design was very difficult in order not to overlap the stripe-shaped pixel patterns. First, a dot-shaped pattern consisting of a red colored layer having a lower side of 12 μm (long side width direction) × 28 μm (short side width direction) and an upper side of 9 μm (long side width direction) × 25 μm (short side width direction) μm is formed. did. Next, a lower side made of a green coloring layer is 9 μm (long side width direction) × 25 μm (short side width direction) thereon,
The upper side is 6 μm (long side width direction) × 22 μm (short side width direction)
Was formed and laminated. Finally, a lower side composed of a blue coloring layer is formed on these with 6 μm (long side width direction) ×
22 μm (short side width direction), upper side 3 μm (long side width direction)
X 19μm (short side width direction)
Laminated. In the normal part, the area of the top of the spacer in contact with the opposing substrate was about 60 μm ² , but in the peripheral part of the display area, the pattern consisting of the uppermost blue colored layer was misaligned or chipped.

Next, a film thickness of 150 is formed by a sputtering method.
An ITO film having a surface resistance of 20 Ω / □ in nm was formed.

Further, in the same manner as in Example 1, a spacer was formed by laminating a projection pattern for triangular wave division orientation and a dot pattern shown in FIG.

The cross section of the projection pattern for divisional alignment on the pixel is a trapezoid having a lower side of 12 μm and an upper side of 8 μm and a thickness of 2.
It was 0 μm. Thus, a color filter was obtained. At the periphery of the display area, the pattern composed of the uppermost blue coloring layer was misaligned or chipped, so the height of the spacer, which is the height from the surface of the ITO layer provided on the blue print to the top of the spacer, Was 2.4 to 4.0 μm, which did not satisfy the target of 3.9 ± 0.1 μm.

In the same manner as in Example 1, a liquid crystal display device was manufactured. The spacer was defective around the display,
The cell gap became small, the liquid crystal injection time was twice as long as that of Example 1, and the liquid crystal injection property was poor. In addition, peripheral cell gap unevenness occurred, and the image quality was poor. Also,
Because a transparent electrode is formed on the resurface of the spacer,
It was electrically connected to the transparent electrode of the opposing substrate, and some display defects were caused by this.

[0113]

The liquid crystal display device of the present invention has projections for liquid crystal split alignment, so that a wide viewing angle can be achieved, and a step of dispersing spacers as compared with the conventional split alignment liquid crystal display device. Is unnecessary, the spacers and the projections for split alignment of the liquid crystal are formed at the same time, and since the conventional black matrix is unnecessary, the productivity is excellent and the cost can be reduced. Further, since the spacer is fixedly arranged on the black matrix, the display quality is not degraded due to the scattering or transmission of light by the spacer, and the display quality is excellent. Furthermore, the pattern processing is easy, the processing accuracy is high, the degree of freedom in pattern design is high, and the number of alignment steps for forming the spacer is small, so that the productivity is excellent.

Further, by providing a part of the projection pattern for divided orientation on the color superimposed black matrix,
Disorder of the alignment on and near the color superimposed black matrix can be prevented.

When the material forming the projection pattern for divided orientation is electrically insulative, the electrical connection between the transparent electrode on the color filter and the electrode substrate facing the electrode even when the substrate is misaligned. The danger of a short circuit can be avoided.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an example of a coating pattern of a colored layer in the present invention.

FIG. 2 is a schematic plan view of an example of a color filter substrate having a projection for orientation division and a spacer according to the present invention.

FIG. 3 is a schematic plan view showing an example of a coating pattern of a colored layer in the present invention.

FIG. 4 is a schematic plan view of an example of a color filter substrate having a projection for orientation division and a spacer according to the present invention.

FIG. 5 is a schematic plan view of an example of a color filter substrate having a projection for orientation division and a spacer according to the present invention.

FIG. 6 is a schematic plan view of an example of a color filter substrate having a projection for orientation division and a spacer according to the present invention.

7 is a schematic plan view of a color filter substrate having a projection for alignment division and a spacer manufactured in Comparative Example 2. FIG.

[Explanation of symbols]

 1: Pixel portion (red (1R), green (1G), blue (1B)) 2 to 10 (10 '): color superimposed black matrix portion 11, 12: projection for alignment division 13: the same as the projection for alignment division Spacer made of material 14, 14 ': two-color superimposed black matrix 15: three-color superimposed black matrix 16: resin black matrix

Continued on the front page F term (reference) 2H048 BA45 BB02 BB08 BB14 BB37 BB44 2H089 LA09 MA04X NA12 QA12 QA14 TA12 2H091 FA02Y FA35Y FB02 FC22 FD06 LA12 LA13 LA30

Claims (11)

[Claims] (1) a colored layer of at least a plurality of colors on a transparent substrate;
In a color filter in which a transparent electrode and a projection pattern for divided orientation are laminated in this order, a part of the colored layer is overlapped with two or more colors to form a black matrix, and the divided layer is formed on the transparent electrode on the black matrix. A color filter comprising a spacer made of the same material as a part of the alignment projection pattern and / or the divided alignment projection pattern. 2. A method according to claim 1, further comprising: a black matrix in which a part of a colored layer is formed by superposing two colors, and a part of a projection pattern for division alignment on a transparent electrode on the black matrix, and / or 2. The color filter according to claim 1, further comprising a spacer made of the same material as the divided alignment projection pattern. 3. A black matrix in which a part of a colored layer is formed by superimposing two colors, and a third colored layer pattern is provided on the black matrix.
2. The color filter according to claim 1, wherein a spacer made of the same material as the transparent electrode and a part of the projection pattern for split orientation and / or the projection pattern for split orientation is formed thereon. 4. A black matrix in which a part of a colored layer is formed by overlapping two colors, a projection pattern for division alignment is formed on a transparent electrode on the black matrix, and 2. The color filter according to claim 1, wherein the same material as the third color layer pattern, the transparent electrode, and the projection pattern for divided orientation is laminated thereon to form a spacer. 5. A black matrix in which a part of a colored layer is formed by superimposing three colors, and a part of a projection pattern for divided alignment on a transparent electrode on the black matrix, and / or 2. The color filter according to claim 1, wherein a spacer made of the same material as the divided alignment projection pattern is formed. 6. A black matrix in which a part of a colored layer is formed by overlapping two colors and three colors.
Forming a projection pattern for split alignment on the transparent electrode on the black matrix formed by overlapping the colors, and forming a projection pattern for split alignment on the transparent electrode on the black matrix formed by overlapping the three colors; 2. The color filter according to claim 1, wherein spacers made of the same material are formed. 7. The color filter according to claim 1, wherein the material forming the projection pattern for divided orientation is electrically insulating. 8. The method according to claim 1, wherein the projection pattern for divided orientation is made of a material in which a pigment is dispersed in a resin.
A color filter according to any one of claims 1 to 7. 9. The color filter according to claim 8, wherein the pigment is an insulating white pigment. 10. The pigment according to claim 1, wherein the pigment is selected from titanium oxide, silicon oxide, aluminum oxide, calcium carbonate, magnesium oxide, lead oxide, chromium oxide, iron oxide, zirconia, and barium sulfate. Item 9
The color filter described. 11. A liquid crystal display device using the color filter according to claim 1.