JPH1114821A - Color filter substrate and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent color absence of a color filter as to the color filter substrate which has a resin-made black matrix and the color filter on a transparent substrate. SOLUTION: A liquid black resin composition 2 is charged in a printing plate 31, half-cured and transferred to an intermediate transfer body 3, and cured on the intermediate transfer body 3 and then printed on the transparent substrate through an adhesive layer 32 to form the black matrix 5 which has a >=95 deg. edge angle; and setting coloring ink is applied to opening parts of the black matrix 5 from an ink jet recording device 23 and cured to form the color filter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter substrate used for a color liquid crystal display used for a color television, a personal computer, a pachinko game console, etc., and more particularly to a color filter substrate provided with a black matrix.

[0002]

2. Description of the Related Art In recent years, the development of personal computers,
In particular, with the development of portable personal computers, demand for liquid crystal displays, especially color liquid crystal displays, has been increasing. However, cost reduction is required for further popularization, and in particular, there is an increasing demand for cost reduction of a color filter substrate having a relatively high cost.

[0003] As a method of manufacturing a color filter substrate,
At present, there are a pigment dispersion method, a printing method, an ink-jet method, an electrodeposition method, and the like. Among them, the printing method and the ink-jet method are methods that can obtain a color filter substrate at low cost. ), G (green),
It is promising because three colors of B (blue) color filter colored pixel patterning can be formed simultaneously.

As a black matrix which is a light-shielding pattern between adjacent filters, a metal chromium thin film is usually used, and there is a demand for toxicity of hexavalent chromium generated in a manufacturing process and resinization in terms of cost. It is considered that the black matrix made of resin will become mainstream in the future.

[0005]

However, a resin black matrix has a larger film thickness than a metal black matrix in order to obtain a required light-shielding property. When an ink receiving layer is formed on a resin black matrix formed on a substrate and the ink receiving layer is colored by an inkjet method to form a color filter, as shown in FIG. A step may be formed in the receiving layer 21, which may impair the surface smoothness of the color filter substrate. In addition, the ink receiving layer cannot be uniformly colored, and color missing or uneven color may occur in the color filter.

Further, as shown in FIG. 8, a curable colored ink is applied to a black matrix 5 by an ink jet method.
When the color filter 42 is formed by applying the color filter 42 to the opening of the black matrix 5, usually, a means for preventing the color mixture between the adjacent filters by giving the ink repellency to the black matrix 5 is adopted.
If the ink repellency is provided only on the upper surface of the black matrix 5, a sufficient effect can be obtained. However, the ink repellency is also provided on the entire black matrix 5, that is, the edge surface in the opening from the ease of the process. is the current situation. Therefore, due to the ink repellency, as shown in FIG. 9, the colored ink may repel in the opening of the black matrix 5 to form a gap at the boundary between the black matrix 5 and the color filter 42. In this case, since the incident light (arrow) passes through the gap, it is displayed as an extremely fine white spot. Although it is not at present a problematic level, it is essential that it will be a problem that must be solved if higher definition and higher quality are advanced in the future.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to reduce the surface smoothness and reduce the color unevenness of a color filter when a resin black matrix is formed on a transparent substrate and a color filter is subsequently formed. In order to prevent the occurrence and provide a color filter substrate having a smooth and uniformly colored surface, in particular, an ink receiving layer is formed on the black matrix, and the ink receiving layer is colored by an inkjet method. In a manufacturing method for forming a color filter, the above object is achieved. A further object of the present invention is to prevent white spots on a color filter substrate obtained by applying a curable coloring ink to the openings of a resin black matrix on a transparent substrate, and in particular, by an inkjet method. In the above-described manufacturing method for applying a coloring ink to the opening of the black matrix, it is an object of the present invention to prevent white spots on a color filter.

[0008]

A first aspect of the present invention is a step of forming a black matrix composed of a black resin composition and having an edge angle of 85 ° or less on a transparent substrate, and receiving ink on the entire surface of the substrate on the black matrix. Forming a color filter by forming a color filter by applying a colored ink to the ink receiving layer in the opening of the black matrix to form a color filter. A second aspect of the present invention is a color filter substrate manufactured by the manufacturing method of the first aspect.

A third aspect of the present invention is a step of forming a black matrix composed of a black resin composition and having an edge angle of 85 ° or less on a transparent substrate, and applying a curable coloring ink to the openings of the black matrix. Forming a color filter by applying a color filter substrate, wherein a fourth method of the present invention is characterized by being manufactured by the method of the third invention. Color filter substrate.

A fifth aspect of the present invention is a step of forming a black matrix having an edge angle of 95 ° or more made of a black resin composition on a transparent substrate, and applying a curable coloring ink to an opening of the black matrix. Forming a color filter by applying a color filter substrate, wherein a sixth aspect of the present invention is characterized by being manufactured by the manufacturing method of the fifth aspect. Color filter substrate.

In the present invention, the black matrix is obtained by interposing a liquid black resin composition patterned by any one of a lithographic plate, an intaglio plate and a flexographic plate, particularly a composition which is cured by radical polymerization, via an intermediate transfer body. Is formed on the intermediate transition body by semi-curing, and then printing on a transparent substrate. A member having a silicone rubber surface having a rubber hardness of 60 to 90 ° is preferably used as the intermediate transition body.

According to the first aspect of the invention, by setting the edge angle of the black matrix to 85 ° or less, the surface of the ink receiving layer formed thereon becomes smooth, so that the ink is easily colored uniformly. Further, it is possible to prevent the influence of a step on a layer formed on the color filter.

According to the third and fifth aspects,
Edge angle of black matrix is less than 85 ° or 95
° or more, even if a gap is formed between the black matrix and the color filter, the gap is 8
Since it is formed with an angle of 5 ° or less, incident light cannot pass through the gap and white spots can be prevented.

In the present invention, the edge angle of the black matrix is the angle between the cross section of the black matrix at the opening of the black matrix and the surface of the transparent substrate, and is the angle indicated by θ in FIGS.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

[Embodiment 1] FIGS. 1 and 2 are sectional process views showing an embodiment for manufacturing a color filter substrate of the second invention by the manufacturing method of the first invention.

In the present invention, the black matrix can be formed at an edge angle of 85 ° or less by printing a liquid black resin composition on a transparent substrate using a plate. Although the present embodiment is an example using a flexographic plate, the steps are substantially the same even when an intaglio or planographic plate is used. .

In the figure, 1 is a flexographic plate and 2 is a liquid black resin composition. The composition takes the form of a kamaboko having a large thickness at the center and a small thickness at the periphery due to surface tension [FIG.
(A)].

As the black resin composition used in the present invention, for example, a resin composition which is cured by drying, heating or irradiation with light such as ultraviolet rays is preferably used, and specifically, a rosin-modified phenol resin, each oil alkyd resin ,
Various oligomers and monomers are blended with a polymer such as an acrylic resin. The compounding ratio is adjusted to obtain the desired curability and viscosity. To lower the viscosity, a petroleum-based or alcohol-based solvent is used. In the case of photocuring, a photopolymerization initiator is generally added in an amount of 5 to 10 parts by weight. As a black material to be added, carbon black is typical, and aniline black may be used in some cases. Further, a black material can be obtained by mixing color materials.

Next, the black resin composition 2 is transferred to the intermediate transition body 3 by bringing the intermediate transition body 3 into rotational contact (FIG. 1).
(B)]. The black resin composition 2 is again in a semi-cylindrical shape on the intermediate transition body 3. In the case of an intaglio plate, it does not have a semi-cylindrical shape on the plate, but has a semi-cylindrical shape when transferred onto the intermediate transfer body 3. As the intermediate transition body used in the present invention, a roller having a silicone rubber surface having a rubber hardness of 60 to 90 ° is preferably used. In particular, in the present invention, those having a silicone rubber surface containing 3 to 15% of a phenyl group are preferably used. Further, in the present invention, a pad printing method can be applied, but transfer by rotational contact is preferable in terms of accuracy and productivity.

In the present invention, when a lithographic plate or an intaglio plate is used, it is practically impossible to perform direct printing because the hardness of the plate material is high and the hardness of the transparent substrate is high. Therefore,
Intermediate transfer is required. The flexographic printing plate used in the present embodiment has flexibility in the plate itself and can perform direct printing. However, from the form of the plate and how to apply printing pressure, a flexographic plate forms a semi-cylindrical black matrix as in the present embodiment. Can not do. Therefore, regardless of which plate is used, it is possible to satisfactorily transfer in a desired shape by using the intermediate transition body.

Further, when the black resin composition 2 is transferred from the intermediate transition body 3 onto the transparent substrate 4 (FIG. 1 (c)), the black resin composition 2 is again formed on the transparent substrate 4 by surface tension due to surface tension. Then, by curing in this state, a black matrix 5 having a semi-cylindrical cross section is formed. Also,
It is preferable that the black resin composition 2 is semi-cured to the extent that the fluidity remains at the stage of being transferred to the intermediate transfer body 3, since the transfer from the intermediate transfer body 3 to the transparent substrate 4 becomes smooth.

The transparent substrate 4 used in the present invention only needs to have transparency necessary for a color filter substrate, and a glass plate, a plastic sheet or the like is usually used.

In the present invention, as long as the edge angle of the black matrix is not more than 85 °, it is not particularly limited to the semi-cylindrical sectional shape as in the present embodiment.

Next, the ink receiving layer 21 is formed on the entire surface of the transparent substrate 4.
Is formed (FIG. 2A). The ink receiving layer 21 is a layer that is colored with a coloring ink to become a color filter. In the present invention, since the surface shape of the black matrix 5 is continuous, the surface can be easily smoothed.

The ink-receiving layer used in the present invention is preferably capable of forming an ink-repellent portion by pattern exposure described later. Specifically, N-methylolacrylamide, N-methoxymethylacrylamide, N-methoxymethylacrylamide,
Ethoxydimethylacrylamide is preferably used.

The ink receiving layer 21 is subjected to pattern exposure through a mask 22 corresponding to the type (negative type or positive type) of the ink receiving layer to form an ink repellent portion 24 (FIG. 2).
(B)].

A colored portion is formed by applying a colored ink from the ink jet recording device 23 to a portion not exposed in the pattern exposure (FIG. 2C). In the present invention, the application of the colored ink is not limited to the ink jet method, but according to the method, a plurality of colors can be colored in one step, and the steps are simplified, which is preferable. As the inkjet method, a bubble jet type using an electrothermal converter as an energy generating element, a piezo jet type using a piezoelectric element, or the like can be used.

The coloring ink used in the present invention is a solution obtained by adding a solvent of a desired color to a solution obtained by adding a solvent such as ethylene glycol, N-methylpyrrolidone (NMP), or isopropyl alcohol (IPA) to pure water. Is preferably used. As the dye, R is preferably Acid Red 35: Acid Yellow 23 = 11: 3, G is Acid Blue 9: Acid Yellow 23 = 11: 3, and B is Acid Blue 9: Acid Red 35 = 11: 3.

The coloring portion 25 is cured to form the color filter 2
6 and a protective layer 27 is formed if necessary [FIG.
(D)]. As the protective layer, a photo-curing type, a thermo-setting type, or a resin material of a photo-thermal type, an inorganic film formed by vapor deposition, sputtering, or the like can be used,
In the case of forming a color filter having transparency, and being able to withstand a subsequent process, for example, a liquid crystal element, it can be used as long as it can withstand an ITO film forming process, an alignment film forming process, and the like.

[Embodiment 2] FIGS. 3 and 4 are sectional process views showing an embodiment for manufacturing a color filter substrate of the sixth invention by the manufacturing method of the fifth invention. The same members as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.

Also in the present invention, the black matrix can be formed at an edge angle of 95 ° or more by printing a liquid black resin composition on a transparent substrate using a plate. The present embodiment is an example using an intaglio.

In the figure, reference numeral 31 denotes an intaglio, which is filled with the liquid black resin composition 2, and in this state, the black resin composition 2 is semi-cured (FIG. 3 (a)). By semi-curing at this stage, the transfer in the subsequent process can be performed smoothly.
Further, if the ink is cured to such an extent that the fluidity is lost, it is possible to reproduce the shape of the intaglio as it is as a black matrix. If sufficient fluidity is left, a semi-cylindrical black matrix can be formed by the surface tension at the stage of transfer to the intermediate transition body 3, and finally an inversely semi-cylindrical black matrix. In addition, as the black resin composition 2 used here, the composition described in the first embodiment can be used, but preferably, it is provided with ink repellency. Specifically, it is desirable to use a rosin-modified phenol resin or an oil-based alkyd resin which becomes a polymer after curing as a binder resin. It is also effective to add a silicone resin or the like.

The semi-cured black resin composition 2 is transferred to the intermediate transition body 3 (FIG. 3 (b)) and completely cured. As the intermediate transition body 3 used here, the intermediate transition body described in Embodiment 1 can be used.

The black resin composition 2 on the intermediate transition body 3 is transferred onto the transparent substrate 4 via the adhesive layer 32 [FIG.
(C)] and, if necessary, curing again to form the black matrix 5. The transparent substrate 4 used here is the same as in the first embodiment, and a thermosetting acrylic resin-based pressure-sensitive adhesive that can be cured simultaneously in the post-curing step is preferably used as the pressure-sensitive adhesive.

Next, at the opening of the black matrix 5,
The curable colored ink 41 is applied by the inkjet recording device 23. As the inkjet recording device 23, the same device as that used in the first embodiment can be used. Further, as the curable colored ink 41, a type which is cured by light irradiation or light irradiation and heat treatment is preferable.
Water, a water-soluble organic solvent, and an acrylic-silicon graft polymer having a polymerization ratio of 3% and each color pigment added thereto are used. As pigments, R is Pigment Red 177: Pigment Yellow 83 = 75: 25, G is Pigment Green 7: Pigment Yellow 83 = 90: 10, B is Pigment Blue 15: Pigment Violet 23 = 7.
5:25 is preferably used.

The color ink 41 is cured to form a color filter 42, and a protective layer 27 is provided as necessary to form a color filter substrate. As the protective layer 27, the same one as in the first embodiment can be used.

According to the present invention, since the edge angle θ of the black matrix 5 is 95 ° or more, a gap is formed between the black matrix 5 and the color filter 42 as shown in FIG. However, since the incident light (arrow) incident on the gap always enters the color filter 42, white spots on the display do not occur.

[Embodiment 3] FIG. 5 shows a process of manufacturing a black matrix according to another embodiment of the fifth invention. This embodiment is an example in which an inverted semi-cylindrical black matrix having an edge angle of 95 ° or more is formed using a planographic plate. still,
The same members as those in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted.

A liquid black resin composition 2 similar to that of Embodiment 2 is patterned [FIG. 5 (a)]. In the figure, reference numeral 51 denotes a planographic plate.

The black resin composition 2 is transferred to the intermediate transition body 3 in a liquid state (FIG. 5 (b)), and is cured in this state until fluidity is lost.

The black resin composition 2 on the intermediate transfer body 3 is transferred onto the transparent substrate 4 via the adhesive layer 32 [FIG.
(C)].

If necessary, the black resin composition is further cured to form a black matrix 5. Hereinafter, a color filter can be formed by a process similar to the process of forming the color filter in the second embodiment shown in FIG. 4 to manufacture a color filter substrate.

[Fourth Embodiment] As a fourth embodiment, an example of manufacturing the color filter substrate of the fourth invention by the manufacturing method of the third invention will be described.

The manufacturing process of the black matrix according to the present invention is substantially the same as the manufacturing process of the black matrix in the first invention. However, since the color filter forming step is the same as the color filter forming step in the fifth invention described in the second embodiment, the black resin composition used is imparted with ink repellency as described in the second embodiment. It is desirable to keep.

Accordingly, in the present invention, the black matrix is formed by the process shown in FIG. 1 and then the color filter is formed by the process shown in FIG. A color filter can be formed on the substrate. As a result, FIG.
As shown in (b), even if there is a gap between the black matrix 5 and the color filter 42, the incident light (arrow) incident on the gap always enters the black matrix 5, so that the display is performed. Above white spots do not occur.

[0046]

【Example】

Example 1 A black matrix pattern having a line width of 20 μm was formed on a waterless lithographic plate (trade name: TAN-E, manufactured by Toray Industries Inc.) through a mask and exposed and developed. Next, using this plate, a pattern of a black resin composition was formed on a glass substrate by an offset printing machine. The printing conditions at this time were printing pressure: 0.2 mm, printing speed: 400 mm / sec, and printing three times in any of the steps from the plate to the intermediate transfer member and the intermediate transfer member to the glass substrate.
The used intermediate transition body was SS7400 (trade name, manufactured by Kyoyo Co., Ltd.), and the formulation of the black resin composition was as follows.

Formulation of black resin composition 34 parts by weight of rosin-modified phenolic resin 34 parts by weight of IP solvent 32 parts by weight of carbon black pigment

The above black resin composition pattern was dried by heating at 200 ° C. for 60 minutes, and a resin black matrix having a semicircular cross section having an edge angle of 30 ° (thickness: 0.8)
μm).

Next, methylphenyl polysilane was applied to a film thickness of 1
Spin coating was performed to a thickness of μm, and prebaking was performed at 90 ° C. for 20 minutes to form an ink receiving layer. At this time, the surface unevenness of the ink receiving layer was 0.3 μm.

Next, a portion of the ink receiving layer to be colored is pattern-exposed through a photomask having a light-shielding portion narrower than the width of the black matrix. After applying and coloring the dye inks of G and B, the ink was dried at 90 ° C. for 10 minutes. Subsequently, the colored ink receiving layer was cured by performing a heat treatment at 230 ° C. for 30 minutes to form a color filter.

A thermosetting resin composition Optomer SS6500 (trade name, manufactured by Nippon Synthetic Rubber Co., Ltd.) was spin-coated on the color filter so as to have a thickness of 2 μm, and 90 ° C.
Pre-bake for 30 minutes at 230 ° C.
The protective layer was cured by performing post-baking for 0 minutes to complete a color filter substrate.

The unevenness on the surface of the color filter substrate thus manufactured was about 0.2 μm. In addition, when observed with an optical microscope, it was confirmed that there were no problems such as color mixing, uneven color, and missing colors.

Example 2 A glass substrate having a width of 20 μm
A 3 μm-etched intaglio plate is filled with a black resin composition having the following formulation, and the black resin composition pattern is applied to an intermediate transition body having a silicone rubber surface with a rubber hardness of 80 °, printing pressure: 0.25 mm Printing speed: 400 mm /
Transfer was performed under the conditions of sec. Next, on the surface of the intermediate transition body,
The black resin composition was semi-cured by irradiating 70 mJ of ultraviolet light (365 nm), and then transferred to a glass substrate under the conditions of printing pressure: 0.1 mm and printing speed: 500 mm / sec. Next, it was dried by heating at 200 ° C. for 30 minutes to obtain a black matrix (film thickness: 1.0 μm) having a semi-cylindrical sectional shape with an edge angle of 38 °.

Formulation of black resin composition Trifunctional group-containing acrylic monomer 45 parts by weight Acrylic resin 25 parts by weight Carbon black 30 parts by weight Radical generator 10 parts by weight

Subsequently, an ink receiving layer was formed in the same manner as in Example 1, colored by an inkjet method to form a color filter, and a protective layer was further formed to obtain a color filter substrate.

The unevenness on the surface of the color filter substrate of this example was about 0.2 μm. In addition, when observed with an optical microscope, it was confirmed that there were no problems such as color mixing, uneven color, and missing colors.

Example 3 A black matrix pattern having a line width of 30 μm was printed on a lithographic plate without water, developed, dried and reproduced. Through this printing plate, a black resin composition was patterned on a glass substrate using a lithographic offset calibrator. The printing conditions were as follows: printing pressure: 0.15 mm, printing speed: 500 mm / sec in any process from a waterless planographic plate to an intermediate transfer member and from an intermediate transfer member to a glass substrate.
The printing was performed four times. The intermediate transition body used at this time was SS7600 (trade name, manufactured by Kaneyo Co., Ltd.), and the formulation of the black resin composition was as follows.

Black resin composition formulation Linseed oil-based alkyd resin 25 parts by weight Diadol 13 31 parts by weight Carbon black 28 parts by weight Dimethyl silicone resin 6 parts by weight

After the above black resin composition pattern was dried at 200 ° C. for 60 minutes, a black matrix having a semicircular section having an edge angle of 36 ° was obtained.

Each ink of R, G, and B was applied to the opening of the black matrix by an ink jet recording apparatus and cured to form a color filter. As the ink, R is Pigment Red 177: Pigment Yellow 83 = 75:
25, G: Pigment Green 7: Pigment Yellow 83 = 90: 10, B: Pigment Blue 15: Pigment Violet 23 = 75: 25. Further, a two-pack type thermosetting resin composition Optmer SS-6688 (trade name, manufactured by Nippon Synthetic Rubber Co., Ltd.) is spin-coated on the color filter so as to have a thickness of 2 μm, and cured to form a color filter substrate. I got

When the color filter substrate thus obtained was observed with an optical microscope, no fine white spots or mixed colors were observed at the boundary between the black matrix and the color filter.

Example 4 A cell depth of 4 μm, a cell bottom width of 22 μm, and a cell top width of 30 μm were applied to a soda lime glass plate.
Was wet-etched with hydrogen fluoride to form a black matrix pattern, thereby producing an intaglio.
A deoxime type silicone resin (trade name:
A 3% solution of KE41T (Shin-Etsu Chemical Co., Ltd.) was applied over the entire surface by a spinner and dried at 200 ° C. for 40 minutes to complete a printing plate.

The above printing plate was filled with a black resin composition having the following formulation by a doctor, and irradiated with ultraviolet light of 365 nm at 70 mJ.
Irradiated from the back side of the plate to partially cure the black resin composition on the plate.

Formulation of black resin composition Tetrafunctional group-containing acrylic monomer 45 parts by weight Urethane acrylate acrylic oligomer 18 parts by weight Carbon black 30 parts by weight Radical generator 7 parts by weight

Next, an adhesive (20 parts by weight of a polyester acrylate monomer and 80 parts by weight of a trifunctional group-containing acrylic monomer) was previously applied to the semi-cured black resin composition on the plate using an offset calibrator to a thickness of 0.4 μm. Printing pressure: 0.05 mm, printing speed: 400 mm using an intermediate transition body having a silicone rubber surface (rubber hardness: 80 °) containing 8 mol% of phenyl groups on a glass substrate which has been applied.
/ Sec under printing conditions.

The transferred black resin composition is heated at 200 ° C. for 60 hours.
After heating and drying for a minute, a black matrix having an inverted trapezoidal cross section with an edge angle of 155 ° was obtained.

R, G, and B colored inks were applied to the openings of the black matrix in the same manner as in Example 3 and cured. On top of that, a thermosetting resin composition U-259PH
(Trade name, manufactured by Nippon Steel Chemical Co., Ltd.) was spin-coated to a thickness of 1 μm, and cured to form a protective layer, thereby obtaining a color filter substrate.

When the color filter substrate of this example was observed with an optical microscope, no fine white spots or mixed colors were observed at the boundary between the black matrix and the color filter.

[0069]

As described above, according to the first and second aspects of the present invention, the surface is smooth and there is no influence of irregularities on the upper layer.
An excellent color filter substrate without color unevenness, color omission, and color mixture can be obtained. According to the third to sixth aspects of the present invention, an excellent color filter substrate having no white spots and no color mixture at the boundary between the black matrix and the color filter can be obtained.

In the present invention, a black matrix having an edge angle of 85 ° or less or 95 ° or more, preferably a semi-cylindrical cross-sectional shape can be easily formed by performing a printing step via an intermediate transition body. Further, by using the ink jet method, a color filter of a plurality of colors can be formed in one process, and the manufacturing cost can be reduced by a simple manufacturing process.

[Brief description of the drawings]

FIG. 1 is a sectional process view of an embodiment of a manufacturing method of the present invention.

FIG. 2 is a sectional process view of an embodiment of the manufacturing method of the present invention.

FIG. 3 is a sectional process view of another embodiment of the manufacturing method of the present invention.

FIG. 4 is a sectional process view of another embodiment of the manufacturing method of the present invention.

FIG. 5 is a sectional process view of another embodiment of the manufacturing method of the present invention.

FIG. 6 is a partially enlarged sectional view of the color filter substrate of the present invention.

FIG. 7 is a cross-sectional view showing a state where an ink receiving layer is formed on a conventional black matrix.

FIG. 8 is a cross-sectional view of an example of a conventional color filter substrate.

9 is a partially enlarged cross-sectional view of the conventional color filter substrate shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexographic plate 2 Black resin composition 3 Intermediate transition body 4 Transparent substrate 5 Black matrix 21 Ink receiving layer 22 Photomask 23 Ink jet recording device 24 Ink repellent part 25 Colored part 26 Color filter 27 Protective layer 31 Intaglio 32 Adhesive layer 41 Curing Type coloring ink 42 Color filter

Claims (32)

[Claims] 1. A method of forming a black resin composition on a transparent substrate.
A step of forming a black matrix having an edge angle of 5 ° or less, a step of forming an ink receiving layer on the entire surface of the substrate, and a step of applying a colored ink to the ink receiving layer at the opening of the black matrix to perform coloring. And a step of forming a color filter. 2. The step of forming the black matrix,
The method for producing a color filter substrate according to claim 1, wherein the liquid black resin composition patterned by any one of a lithographic plate, an intaglio plate, and a flexographic plate is printed on a transparent substrate via an intermediate transition body. 3. The method for producing a color filter substrate according to claim 2, wherein the black resin composition is semi-cured in a state of being transferred to the intermediate transition body, and then printed on a transparent substrate. 4. The method for producing a color filter substrate according to claim 2, wherein the liquid black resin composition is cured by radical polymerization. 5. The method according to claim 1, wherein the intermediate transition body has a rubber hardness of 60 to 90 °.
2. The method for producing a color filter substrate according to claim 1, wherein the color filter substrate has a silicone rubber surface. 6. The intermediate transfer compound has a phenyl group of 3 to 15%.
6. The method for producing a color filter substrate according to claim 5, which has a silicone rubber surface containing mol%. 7. The method for manufacturing a color filter substrate according to claim 1, wherein the cross section of the black matrix is in a semi-cylindrical shape. 8. The method for manufacturing a color filter substrate according to claim 1, wherein the means for applying the colored ink to the ink receiving layer is an ink jet method. 9. The method according to claim 1, wherein the ink receiving layer is made of a photosensitive resin, and after the pattern is exposed to light to cure the ink receiving layer on the black matrix, the unexposed portions are colored by applying colored ink. A method for manufacturing a color filter substrate. 10. The method for producing a color filter substrate according to claim 9, wherein the pattern-exposed portion of the ink receiving layer exhibits ink repellency. 11. A color filter substrate manufactured by the manufacturing method according to claim 1. Description: 12. A step of forming a black matrix having an edge angle of 85 ° or less made of a black resin composition on a transparent substrate, and applying a curable coloring ink to an opening of the black matrix to form a color filter. Forming a color filter substrate. 13. The method according to claim 12, wherein in the step of forming the black matrix, a liquid black resin composition patterned by any one of a lithographic plate, an intaglio plate, and a flexographic plate is printed on a transparent substrate via an intermediate transition body. A method for manufacturing a color filter substrate. 14. The method for manufacturing a color filter substrate according to claim 13, wherein the black resin composition is semi-cured while being transferred to the intermediate transition body, and then printed on a transparent substrate. 15. The method for producing a color filter substrate according to claim 13, wherein the liquid black resin composition is cured by radical polymerization. 16. The intermediate transition body has a rubber hardness of 60 to 90.
13. The method for producing a color filter substrate according to claim 12, wherein the color filter substrate has a silicone rubber surface having an angle of? 17. The above intermediate transfer compound has a phenyl group of 3-1.
17. A silicone rubber surface containing 5 mol%.
A manufacturing method of the color filter substrate according to the above. 18. The method for manufacturing a color filter substrate according to claim 12, wherein the cross section of the black matrix is in a semi-cylindrical shape. 19. The method for manufacturing a color filter substrate according to claim 12, wherein said black matrix has ink repellency. 20. The method for manufacturing a color filter substrate according to claim 12, wherein the means for applying the curable colored ink to the openings of the black matrix is an ink-jet method. 21. A color filter substrate manufactured by the manufacturing method according to claim 12. 22. A step of forming a black matrix composed of a black resin composition and having an edge angle of 95 ° or more on a transparent substrate, and applying a curable coloring ink to an opening of the black matrix to form a color filter. Forming a color filter substrate. 23. The method according to claim 22, wherein in the step of forming the black matrix, a liquid black resin composition patterned by any one of a lithographic plate, an intaglio plate, and a flexographic plate is printed on a transparent substrate via an intermediate transition body. A method for manufacturing a color filter substrate. 24. The method for manufacturing a color filter substrate according to claim 23, wherein the black resin composition is cured while being transferred to the intermediate transfer body and then printed on a transparent substrate. 25. The method for producing a color filter substrate according to claim 24, wherein the black resin composition transferred to the intermediate transition body and cured is printed on a transparent substrate via an adhesive layer. 26. The liquid black resin composition is semi-cured in a state of being filled in an intaglio plate, and then cured while the resin composition is transferred to an intermediate transition body. The method for manufacturing a color filter substrate according to claim 22, wherein the color filter substrate is printed. 27. The method for manufacturing a color filter substrate according to claim 22, wherein the liquid black resin composition is cured by radical polymerization. 28. The method according to claim 28, wherein the intermediate transition body has a rubber hardness of 60 to 90.
23. The method for manufacturing a color filter substrate according to claim 22, wherein the color filter substrate has a silicone rubber surface having an angle of? 29. The intermediate transfer compound has a phenyl group of 3-1.
29. A silicone rubber surface containing 5 mol%.
A manufacturing method of the color filter substrate according to the above. 30. The method according to claim 22, wherein the black matrix has ink repellency. 31. The color filter substrate according to claim 22, wherein the means for applying the curable colored ink to the openings of the black matrix is an ink jet method. 32. A color filter substrate manufactured by the manufacturing method according to claim 22.