JPH1172611A - Production of pixel sheet having black matrix and photosensitive transfer sheet used for the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain a pixel sheet having black matrices of a high optical density and having the black matrices with which unequal densities are hardly observable in respective pixels. SOLUTION: This process for production consists in obtaining the pixel sheet 10 by forming the pixels on the surface of a light transmissible base 11 by a transfer method or coating application method. A photosensitive transfer sheet provided with an alkaline-soluble thermoplastic resin layer 15, a photosensitive resin layer 16 and a black resin layer 17 in this order on a tentative base 14 is superposed on the pixel surface and thereafter, the tentative base 14 is peeled to form the black resin layer 17, the photosensitive resin layer 16 and the thermoplastic layer 15 in this order on the pixel surface. After the photosensitive resin layer 16 is exposed imagewise, the thermoplastic resin layer 15, the photosensitive resin layer 16 of the unexposed region and the black resin layer 17 thereunder are removed. The black matrices 17B consisting of the black resin layer 17 are formed by removing the cured photosensitive resin layer 16. The pixel sheet having the black matrices 17B forming the pixels by the transfer method is produced after the formation of the black matrices 17B in the manner described above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a pixel sheet having a high optical density black matrix, and a photosensitive transfer sheet advantageously used in the method. In particular, the production method and the photosensitive transfer sheet of the present invention,
The present invention can be particularly suitably used for producing a color filter used for producing a color liquid crystal display or the like.

[0002]

2. Description of the Related Art Color filters conventionally used in color liquid crystal displays and the like include R, G, B (red, green, blue).
A black matrix is formed in the gap between each pixel for the purpose of improving display contrast and the like. Such a color filter is produced, for example, by forming a black matrix and then forming R, G, B (red, green, blue) pixels sequentially in the gaps by a photolithographic (photolithographic) method. As the black matrix, a method using a photosensitive resin in which a metal film such as chromium or a light-shielding pigment is dispersed is known. For example, a black matrix using a metal film such as chromium is formed by forming a metal film on a substrate by vapor deposition or the like, and then patterning the metal film by photolithography (photolithography) using a photoresist and an etching process. (For example, JP-A-3-274503). In addition, a black matrix using a photosensitive resin in which a light-shielding pigment or the like is dispersed is formed on a substrate by a method such as coating or printing a photosensitive resin layer in which a light-shielding pigment or the like is dispersed. (For example, JP-A-4-190362).

On the other hand, Japanese Patent Application Laid-Open No. Sho 62-9301 discloses that
A method of forming a black matrix by a self-alignment method (self-alignment method) using a photosensitive resin in which a light-shielding pigment or the like is dispersed has been disclosed, and has attracted attention in terms of cost and manufacturing steps. in this way,
A photosensitive resin layer in which a black light-shielding pigment such as carbon black is dispersed is provided on the substrate on which the R, G, and B pixels are formed so that the R, G, and B pixels function as a photomask. Next, exposure is performed from the back surface to form a black matrix in the gap between the pixels. The formation of the black matrix by the self-alignment method eliminates the need for the alignment step conventionally required, and the photosensitive resin for forming the black matrix is formed on the entire surface of the pixel region and the gap region between the pixels. Therefore, there is an advantage that white dropout hardly occurs.

The above self-alignment method is an advantageous method from the viewpoint of productivity. However, since the self-alignment method is formed by exposing a photosensitive resin layer in which a black light-shielding pigment or the like is dispersed, light from the photosensitive resin layer does not reach. The area near the unexposed surface elutes during development. For this reason, it has been difficult to produce a black matrix having a high optical density (for example, 3.5 or more). When a photosensitive resin layer in which the light-shielding pigment or the like is dispersed is formed on a substrate by a method such as coating or printing, and a pattern exposure-development process is used, black having a high optical density is also used for the same reason as described above. It is difficult to make a matrix. Therefore, as a method for producing a black matrix having a high optical density, a method of patterning and forming the metal film is mainly used.

JP-A-8-5829 discloses an alkali-soluble colored layer formed by applying an organic solvent solution of a polyimide precursor in which a light-shielding pigment or the like is dispersed on a glass substrate and drying the solution. An organic solvent solution of a positive photoresist is applied on the layer, dried, then exposed, developed with an alkali, and the photoresist layer remaining on the pixels of the colored layer is removed with an organic solvent to obtain a high optical density black matrix. A method for manufacturing a pixel sheet having the following is disclosed.

[0006]

It is possible to form a high optical density black matrix on a substrate by using the method described in the above-mentioned publication. Above is performed by a coating method. According to the study of the present inventors,
When the coating liquid for forming each pixel is applied on a substrate having a black matrix, there is a problem that uniform application is hindered by the convex portions of the already formed black matrix, and it is difficult to obtain pixels having a uniform density. It became clear.

An object of the present invention is to provide a manufacturing method which can easily obtain a pixel sheet having a black matrix having a high optical density and having little density variation (unevenness) in each pixel. Another object of the present invention is to provide a photosensitive transfer sheet that can be advantageously used in the method for producing a pixel sheet having the high optical density black matrix.

[0008]

Means for Solving the Problems The present invention provides the following (1) to
Method for producing a pixel sheet having a black matrix comprising the step (6): Method for producing a pixel sheet having a black matrix comprising the following steps (1) to (7): (1) On the surface of the light-transmitting support Laminating a photosensitive colored resin layer; (2) exposing the surface of the photosensitive colored resin layer imagewise;
Forming a pixel having the color of the colored resin layer by developing; (3) forming a pixel of a color other than the above by using a photosensitive colored resin having a color different from that of the photosensitive colored resin layer; (1)
(4) Further, if necessary, the step (3) is performed once or more to form a plurality of pixels of different colors on the light-transmitting support. Forming a pixel sheet to obtain a pixel sheet; (5) forming a photosensitive transfer sheet, in which an alkali-soluble thermoplastic resin layer, a photosensitive resin layer, and a black resin layer are sequentially laminated on a temporary support, on the pixel sheet, After overlapping so that the resin layer and the pixel surface are in contact with each other, the temporary support is peeled off to laminate a black resin layer, a photosensitive resin layer, and an alkali-soluble thermoplastic resin layer on the pixel surface of the pixel sheet in this order. Step: (6) After exposing the photosensitive resin layer of the pixel sheet imagewise, the alkali-soluble thermoplastic resin layer is removed by contacting with an alkaline aqueous solution, and the photosensitive resin layer in an unexposed region and the photosensitive resin layer are removed. (7) forming a black matrix made of a black resin between pixels by removing the exposed photosensitive resin layer by contacting it with warm water of 40 ° C. or higher to remove the exposed photosensitive resin layer. is there. Preferred embodiments of the production method of the present invention are as follows. 1) The above-mentioned photosensitive colored resin layer is laminated by superposing the photosensitive colored resin layer of the transfer sheet having the photosensitive colored resin layer on the surface of the light-transmitting support. 2) Lamination of the photosensitive colored resin layer is performed by applying and drying a coating solution for forming a photosensitive colored resin layer. In particular, the lamination of the photosensitive colored resin layers is preferably performed by a transfer method in order to make the coloring density of each pixel uniform. In forming the black matrix of the above-mentioned production method, an alkali-soluble thermoplastic resin layer, a photosensitive resin layer (preferably a water-soluble photosensitive resin layer) and a black colorant (preferably carbon black) are provided on the light-transmitting sheet. A photosensitive transfer sheet in which a black resin layer composed of an alkali-soluble binder is laminated in order can be advantageously used.

Further, the present invention provides a method for producing a pixel sheet having a black matrix comprising the following steps (1) to (7): (1) a black resin layer and a photosensitive resin A step of laminating the layers in this order; (2) After exposing the photosensitive resin layer imagewise, the photosensitive resin layer in an unexposed area and the black resin layer thereunder are removed by contacting with an alkaline aqueous solution. (3) forming a black matrix made of a black resin by removing the exposed photosensitive resin layer by contacting it with warm water of 40 ° C. or higher; (4) forming a light-transmitting support having a black matrix on (5) laminating a photosensitive transfer sheet having a photosensitive colored resin layer so that the photosensitive colored resin layer and the black matrix surface are in contact with each other; Forming a pixel having the color of the colored resin layer by imagewise exposing the surface of the photosensitive colored resin layer and developing; (6) a photosensitive material having a color different from that of the photosensitive colored resin layer. Pixels of colors other than those described above are formed using
(7) Further, if desired, the step (6) is performed one or more times to form a region defined by the black matrix on the light-transmitting support. Forming pixels of a plurality of colors different from each other. Preferred embodiments of the production method of the present invention are as follows. 1) The photosensitive transfer sheet, in which the photosensitive resin layer and the black resin layer are laminated in this order on the temporary support, is laminated on the temporary support. This is performed by superposing the resin layer and the surface of the light-transmitting support so that they are in contact with each other, and then peeling off the temporary support. 2) In the lamination of the photosensitive resin layer and the black resin layer, a coating solution for forming a black resin layer is applied to the surface of the light-transmitting support, dried, and then a coating solution for forming a photosensitive resin layer is applied and dried. It is done by things. In particular, the lamination of the photosensitive resin layer and the black resin layer is preferably performed by a transfer method in order to obtain a uniform and high optical density. In forming the black matrix of the above-mentioned production method, a black resin comprising a photosensitive resin layer (preferably a water-soluble photosensitive resin layer), a black colorant (preferably carbon black) and an alkali-soluble binder is provided on a temporary support. A photosensitive transfer sheet in which the layers are sequentially laminated can be advantageously used.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A method for producing a pixel sheet having a black matrix according to the present invention and a photosensitive transfer sheet advantageously used in the method will be described in detail. The method for producing a pixel sheet having a black matrix according to the present invention can be performed, for example, as follows. FIG.
This will be described in detail with reference to FIG.

As shown in FIG. 1 (A-1), a photosensitive transfer sheet having a photosensitive red resin layer 12R for forming red pixels is first superimposed on the surface of a light-transmitting support 11, and The photosensitive red resin layer 12R is transferred. The photosensitive red resin layer 12R is formed by coating a coating solution containing a photosensitive red resin layer forming material (generally comprising a red pigment and a photosensitive resin) on the light transmitting support 11 without using the photosensitive transfer sheet. And dried. Next, as shown in (A-2), the photosensitive red resin layer 1
The surface of the 2R is exposed through a red pixel photomask 13 (imagewise exposure). Further, as shown in (A-3), the exposed photosensitive red resin layer 12R is developed to form a red pixel 12RP. Then, as shown in (A-4), the formation of the green and blue pixels is the same as the above (A-4) except that the photosensitive red resin layer is changed to the corresponding photosensitive green resin layer or photosensitive blue resin layer. -1) to (A-3)
Is performed by repeating the above steps. In this way, the green and blue pixels 12GP,
A 12BP is formed, and a pixel sheet 10 in which red, green, and blue pixels are formed on a light-transmitting support is obtained.

The above-mentioned pixels are generally formed in three colors as described above, but may be two kinds having different colors from each other, or may be four kinds or more. As the light-transmitting support,
For example, a soda glass plate having a silicon oxide film on the surface,
A known glass plate such as a low expansion glass plate, a non-alkali glass plate, and a quartz glass plate or a plastic film is used. When placing three types of pixels, red, green, and blue,
Any arrangement such as a mosaic type, a triangle type, and a four-pixel arrangement type may be used.

Next, as shown in FIG. 2 (A-5),
The temporary support 1 is provided on the surface of the pixel sheet 10 having pixels.
4, a photosensitive transfer sheet provided with an alkali-soluble thermoplastic resin layer 15, a photosensitive resin layer 16 (preferably a water-soluble photosensitive resin layer), and a black resin layer 17 in this order, is laminated. And the three layers are transferred as shown in (A-6), whereby a black resin layer, a water-soluble photosensitive resin layer and an alkali-soluble thermoplastic resin layer are formed on the pixel side surface of the pixel sheet. Form in order. (A-
As shown in 6), the black matrix mask 18
To expose the above three layers to cause a photoreaction in the photosensitive resin layer 16. Next, the removal of the alkali-soluble thermoplastic resin layer 15 and the removal of the photosensitive resin layer 16 in the unexposed area and the black resin layer 17 thereunder are performed. The photosensitive resin layer is generally water-soluble, and the alkali-soluble thermoplastic resin layer and the black resin layer are dissolved in an alkaline aqueous solution, so that the alkali-soluble thermoplastic resin layer, the photosensitive resin layer in the unexposed area and the black The resin layer can be removed at once with an alkaline aqueous solution. Of course, the removal may be performed in order.
Further, the photosensitive resin may be soluble in an organic solvent instead of being soluble in water. By the above removal, as shown in (A-7), a black resin layer having a cured photosensitive resin layer 16C on the surface is formed. Then, the cured photosensitive resin layer is removed with warm water to form a black matrix 17B composed of a black resin layer (A-8). Pixel sheet (color filter) having black matrix in this way
Is obtained.

The method for producing a pixel sheet having a black matrix according to the present invention can be carried out, for example, as follows. This will be described in detail with reference to FIGS.

As shown in FIG. 3 (B-1), a photosensitive resin layer 36 and a black resin layer 37 are sequentially provided on a temporary support 34 on the surface of a light-transmitting support 31. After the transfer sheet 30 is stacked, the temporary support 34 is peeled off, and (B-
By transferring these two layers as shown in 2), a black resin layer 37 and a water-soluble photosensitive resin layer 36 are formed in this order on the surface of the light-transmitting support 31. (B-2)
As shown in FIG.
The above two layers are exposed to light through 8 to cause a photoreaction on the photosensitive resin layer 36. Photosensitive resin layer 36 and black resin layer 37
Can be formed by applying a coating solution for forming a photosensitive resin layer on the light-transmitting support 31, drying the coating solution for forming a black resin layer, and then drying. Further, instead of the photosensitive transfer sheet 30, the photosensitive transfer sheet 20 used in (A-5) may be used. Next, the photosensitive resin layer 36 in the unexposed region and the black resin layer 37 thereunder are removed. The photosensitive resin layer is generally water-soluble, and the black resin layer is dissolved in an alkaline aqueous solution, so that the photosensitive resin layer and the black resin layer in the unexposed area can be removed at once with an alkaline aqueous solution. Of course, the removal may be performed in order. Further, the photosensitive resin may be soluble in an organic solvent instead of being soluble in water. By the above removal, as shown in (B-3), a black resin layer having the water-soluble photosensitive resin layer 36C cured on the surface is formed on the light-transmitting sheet-like support 31. Then, the cured water-soluble photosensitive resin layer is removed with warm water or the like to form a black matrix 37B composed of a black resin layer (B-4).

As shown in (B-5), a photosensitive transfer sheet having a photosensitive red resin layer 32R for forming red pixels is formed on the surface of the light-transmitting support 31 having the black matrix 37B on the black matrix side. The photosensitive red resin layer 32R is transferred in a superimposed manner. Next, as shown in (B-6), the surface of the photosensitive red resin layer 32R is exposed through a red pixel photomask 33 (imagewise exposure). Further, as shown in (B-7), the exposed photosensitive red resin layer 32R is developed to form red pixels 32RP between black matrices. Then, the steps of (B-5) to (B-7) are also performed except that the formation of the green and blue pixels is performed except that the photosensitive red resin layer is changed to the corresponding photosensitive green resin layer or photosensitive blue resin layer. Is performed in the same manner as described above. Thus, the light-transmitting sheet-like support 3
1 are further formed with green and blue pixels 32GP and 32BP, and a pixel sheet in which red, green and blue pixels are formed in gaps between black matrices on a light-transmitting sheet-like support having a black matrix ( That is, a color filter) is obtained (B-8).

The above-mentioned exposure is generally performed using ultraviolet rays (UV), and the type of light is appropriately selected according to the photosensitivity of the photosensitive resin layer.

In the method for producing a pixel sheet having a black matrix (useful for a color filter) according to the present invention, when forming a black matrix after forming pixels on a light-transmitting support, it is already formed. To prevent the optical density from becoming uneven due to unevenness of the pixel,
It is formed by transfer. At the time of transfer, a transfer sheet provided with an alkali-soluble thermoplastic resin layer below the photosensitive resin layer so as to absorb the change in the unevenness is used. When the black matrix is formed first, since it is provided on a light-transmitting support having no unevenness, it can be formed not only by the above-mentioned transfer method but also by a coating method. However, when pixels are formed on the black matrix, density unevenness is likely to occur during coating, and it is necessary to perform the transfer method. However, in order to obtain a pixel having a uniform density and a uniform black matrix having a high optical density, it is preferable to perform both by a transfer method. That is, a black resin layer and a photosensitive resin layer (or further an alkali-soluble thermoplastic resin layer) are formed by transfer on the light-transmitting support or the light-transmitting support having pixels as described above, and developed. By forming a black resin layer having a cured photosensitive resin layer on the surface (as shown in (A-7) or (B-3)), and then removing the cured photosensitive resin layer It is preferably made. The black resin layer is
During development, the surface is not dissolved because it is protected by the cured photosensitive resin layer, so that a layer having a desired high optical density can be obtained. In the present invention, the formation of the black resin layer and the photosensitive resin layer (or further, the alkali-soluble thermoplastic resin layer) is preferably performed using a transfer sheet. Such a transfer sheet is generally formed by forming a water-soluble photosensitive resin layer or the like on the sheet, then applying a coating liquid for forming a black resin layer thereon, and drying. Therefore, the black resin layer is the uppermost layer in the transfer sheet,
Since it is not further applied thereon, it has the same optical density as it was formed, and there are few defects such as white spots in the layer. In addition, since it is the uppermost layer, there is an advantage that a defect can be easily found in a layer. When a black resin layer is formed by the coating method, a photosensitive resin layer, etc., is further applied thereon, causing various defects, and the defects are formed to the black matrix through the final process or a considerable number of processes. There is a problem that if you do not find it you can not find it. The optical density of the finally obtained black resin layer (black matrix) of the present invention is preferably 2.5 to 4.0, and particularly preferably 3.0 to 4.0.
4.0 is preferred. The optical density is a value defined by the Y value in the CIE display system (that is, -log (Y / 100)).

Materials used in the method for producing a pixel sheet having a black matrix according to the present invention will be described in detail. For the formation of the above black matrix, a photosensitive transfer sheet in which an alkali-soluble thermoplastic resin layer, a photosensitive resin layer, and a black resin layer composed of a black colorant and an alkali-soluble binder are sequentially provided on a temporary support (Especially used when forming a black matrix on a pixel); or on a light-transmitting sheet,
A photosensitive transfer sheet provided with a photosensitive resin layer and a black resin layer composed of a black colorant and an alkali-soluble binder in order is used. When the black matrix is formed directly on the light-transmitting support, each layer may be formed by a coating method as described above. In forming each pixel, a known transfer sheet or coating liquid for forming each pixel can be used.

As the temporary support for the photosensitive transfer material,
Having good peelability with a photosensitive resin or an alkali-soluble thermoplastic resin layer, being chemically and thermally stable,
Further, it is preferable to be made of a flexible substance. Specifically, a thin sheet of Teflon, polyethylene terephthalate, polycarbonate, polyethylene, polypropylene or the like or a laminate thereof is preferable. In order to obtain good releasability, it is general that no surface treatment such as glow discharge is performed and no undercoat such as gelatin is provided. The thickness of the temporary support is suitably from 5 to 300 μm, especially from 20 to 1 μm.
50 μm is preferred.

The photosensitive resin layer may be a water-soluble photosensitive resin layer or an alkali-soluble photosensitive resin layer, but is preferably a water-soluble photosensitive resin layer. In forming the water-soluble photosensitive resin layer, generally, a water-soluble negative-type photosensitive resin that hardens the light irradiation portion and becomes insoluble in water is used. Examples of the water-soluble or alkali-soluble photosensitive resin include (1) a water-soluble negative photosensitive diazo resin, (2) a photosensitive resin composition comprising an azide compound and a binder, (3) a cinnamic acid photosensitive resin and (4) And a) a photosensitive resin composition comprising a dichromate and a binder.

As the water-soluble negative photosensitive diazo resin (1), US Pat.
No. 415, a reaction product of a diazonium salt with an organic condensing agent containing a reactive carbonyl group such as formaldehyde. In particular, a condensate of a diazophenylamine-p-diazonium salt and formaldehyde is preferred. Furthermore, Japanese Patent Publication No. 49-4800
No. 1, JP-B-49-45322 and JP-B-4
The photosensitive diazo resin described in 9-45323 can be mentioned. These photosensitive diazo resins are water-soluble. It is preferred to use a binder with the diazonium salt. Examples of the binder include water-soluble polymers such as polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylamide, hydroxymethyl cellulose, and gelatin. The photosensitive diazo resin is preferably contained in the water-soluble photosensitive resin layer in a range of 5 to 50% by weight. When the content of the photosensitive diazo resin is less than 5% by weight, the photosensitivity is improved, but it is liable to change with time and lacks stability. Particularly, 8 to 20% by weight is preferable. The binder is preferably contained in the water-soluble photosensitive resin layer in a range of 50 to 95% by weight.

The photosensitive resin composition comprising an azide compound and a binder (2) is disclosed in British Patent No. 1235281.
And JP-A-1495861, JP-A-51-3
No. 2331 and JP-A-51-36128, a photosensitive resin composition comprising an azide compound and a water-soluble or alkali-soluble polymer, and JP-A-51-5.
No. 102, JP-A-50-84302 and JP-A-53-12984, and examples thereof include photosensitive resin compositions comprising an azide compound and a polymer. The cinnamic acid type photosensitive resin of (3) is disclosed in
Photosensitive polyesters disclosed in JP-A-2-96696 and British Patent Nos. 1112277 and 131
No. 3390, No. 1341004 and No. 13777
No. 47, polyvinyl cinnamate. Various salts can be used as the dichromic acid in the photosensitive resin composition comprising the dichromate (4) and a binder, and an ammonium salt is particularly preferable. Examples of the binder include water-soluble binders such as gelatin, casein, polyvinyl alcohol, and water-soluble nylon. Particularly, polyvinyl alcohol, gelatin, and water-soluble nylon are preferable. The dichromic acid is preferably contained in the range of 0.1 to 30% by weight based on the binder.

The formation of the water-soluble photosensitive resin layer is carried out by applying an aqueous solution of the photosensitive resin on a temporary support and drying it. The formation of the alkali-soluble photosensitive resin layer is carried out by applying a solution of the photosensitive resin in an organic solvent on a temporary support and drying it.

A black resin layer is formed on the photosensitive resin layer. The black resin layer includes a black colorant and an alkali-soluble binder. Examples of the alkali-soluble binder include polymers having a carboxylic acid group in a side chain, for example, JP-A-59-44615 and JP-B-54-34327.
JP, JP-B-58-12577, JP-B-54-
Methacrylic acid copolymers, acrylic acid copolymers, itaconic acid copolymers, crotonic acid copolymers as described in JP-A-25957, JP-A-59-53836 and JP-A-59-71048. Examples thereof include a polymer, a maleic acid copolymer, and a partially esterified maleic acid copolymer. Further, a cellulose derivative having a carboxylic acid group in a side chain can also be mentioned. In addition, those obtained by adding a cyclic acid anhydride to a polymer having a hydroxyl group can also be preferably used. In particular, a copolymer of benzyl (meth) acrylate and (meth) acrylic acid or a multi-component copolymer of benzyl (meth) acrylate and (meth) acrylic acid and other monomers described in US Pat. No. 4,139,391 is used. Can be mentioned. As the binder, a water-soluble polymer can be used in addition to the alkali-soluble binder polymer. For example, polyvinyl pyrrolidone, polyethylene oxide and polyvinyl alcohol can be mentioned. The content of the binder in the black resin layer is preferably in the range of 10 to 80% by weight, particularly 20 to 7% by weight.
0% by weight is preferred. If it is less than 10% by weight, the adhesiveness of the black resin layer is too large, and if it exceeds 80% by weight, the strength of the formed layer is reduced.

As the above-mentioned black colorant, the following pigments or dyes are used alone or in combination so as to enable black coloring. As the coloring agent, red, green,
Known pigments and dyes of blue, yellow, purple, magenta, cyan, and black can be used. Preferred examples thereof include carmine 6B (C.I.
0), phthalocyanine green (CI. 7426)
0), phthalocyanine blue (C.I. 74160),
Mitsubishi Carbon Black MA-100, Perylene Black (BASF K0084, K0086), Cyanine Black, # 1201 Lionol Yellow (CI.210
90), Lionol Yellow GRO (CI. 2109)
0), Shimura-First Yellow 8GF (CI.2
1105), benzidine yellow 4T-564D (C.I.
I. 21095), Shimura Fast Red 4015
(CI. 12355), Lionol Red 7B440
1 (CI. 15850), Fast Gen Blue TG
RL (C.I. 74160), Lionol Blue SM
(CI26150), Mitsubishi Carbon Black MA-
100, Mitsubishi Carbon Black # 40, Victoria Pure Blue (C.I. 42595), Auramine O (C.I.
I. 41000), carotene brilliant flavin (CI basic 13), rhodamine 6GCP
(CI. 45160), Rhodamine B (CI. 45
170), Safranin OK 70: 100 (CI.50)
240), Erioglaucine X (CI. 4208)
0), First Black HB (CI. 2615)
0), C.I. I. Pigment Red 97, C.I. I. Pigment Red 122, C.I. I. Pigment Red 1
49, C.I. I. Pigment Red 168, C.I. I. Pigment Red 177, C.I. I. Pigment Red 180, C.I. I. Pigment Red 192, C.I. I.
Pigment Red 215, C.I. I. Pigment Green 7, C.I. I. Pigment Green 36, C.I. I.
Pigment Blue 15: 1, C.I. I. Pigment Blue 15: 4, C.I. I. Pigment Blue 15: 6,
C. I. Pigment Blue 22, C.I. I. Pigment Blue 60, C.I. I. Pigment Blue 64, C.I.
I. Pigment Yellow 139, C.I. I. Pigment yellow 83, C.I. I. Pigment Violet 23 and the like. In addition, metal powder, white pigment, fluorescent pigment, and the like can be used. These coloring materials may be used alone or in combination of two or more so that the hue becomes black.

Preferred combinations of black colorants include:
A combination of a red and blue pigment mixture having a complementary color relationship with each other and a yellow and purple pigment mixture having a complementary color relationship with each other, or a combination of the above mixture and a black pigment further added or a blue and purple color A combination of black pigments can be mentioned. Carbon black is preferred as the black pigment. The content of the colorant in the black resin layer is preferably in the range of 1 to 70% by weight.

The black resin layer may contain an alkali-insoluble polymer (eg, alcohol-soluble nylon, epoxy resin) as long as the alkali-solubility is not reduced in order to improve various properties (eg, improvement in film strength). Good. The black resin layer can contain a monomer that undergoes addition polymerization upon irradiation with light having an ethylenically unsaturated double bond in order to improve the durability of the resulting black matrix. Examples of the monomer that undergoes addition polymerization by irradiation with light having an ethylenically unsaturated double bond include compounds having at least one addition-polymerizable ethylenically unsaturated group in the molecule and having a boiling point of 100 ° C. or higher at normal pressure. Can be mentioned. Monofunctional acrylates and monofunctional methacrylates such as polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate and phenoxyethyl (meth) acrylate; polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, trimethylol Ethane triacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate,
Neopentyl glycol di (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, hexanediol di (meth) acrylate , Trimethylolpropane tri (acryloyloxypropyl) ether, tri (acryloyloxyethyl) isocyanurate, tri (acryloyloxyethyl) cyanurate, glycerin tri (meth) acrylate; trimethylolpropane, glycerin and other polyfunctional alcohols to ethylene oxide and propylene Examples include polyfunctional acrylates and polyfunctional methacrylates, such as those obtained by adding oxides and then (meth) acrylated. Can. Furthermore, Japanese Patent Publication No. 48-41
Urethane acrylates described in JP-A-708-708, JP-B-50-6034 and JP-A-51-37193; JP-A-48-64183,
Polyester acrylates described in JP-A-9-43191 and JP-B-52-30490; examples include polyfunctional acrylates and methacrylates such as epoxy acrylates which are reaction products of an epoxy resin and (meth) acrylic acid. it can. Among these, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and dipentaerythritol penta (meth) acrylate are preferred. Monomers that undergo addition polymerization upon irradiation with light having an ethylenically unsaturated double bond may be used alone or as a mixture of two or more. The monomer content of the black resin layer is generally 0 to 90% by weight. , 10 to 40% by weight. If it is less than 5% by weight, the strength of the image is reduced, and if it exceeds 90% by weight, the adhesiveness of the black resin layer becomes excessive, which is not preferable.

When the above-mentioned monomer is used for obtaining a high-density image, a photopolymerization initiator may be contained in the black resin layer. As the photopolymerization initiator, US Pat.
No. 60, the acyloin ether compound described in U.S. Pat. No. 2,448,828, U.S. Pat.
No. 2512, α-hydrocarbon-substituted aromatic acyloin compounds, U.S. Pat. Nos. 3,046,127 and 2,951,758, polynuclear quinone compounds, and U.S. Pat. No. 3,549,367. A combination of a triarylimidazole dimer and a p-aminoketone, a benzothiazole compound and a trihalomethyl-s-triazine compound described in JP-B-51-48516, and a trihalomethyl compound described in U.S. Pat. No. 4,239,850. -S-triazine compounds and trihalomethyloxadiazole compounds described in U.S. Pat. No. 4,221,976 can be exemplified.
Particularly, trihalomethyl-s-triazine, trihalomethyloxadiazole and triarylimidazole dimer are preferable. The content of the photopolymerization initiator in the black resin layer is generally 0.5 to 20% by weight, preferably 1 to 15% by weight. If the amount is less than 0.5% by weight, the light sensitivity and the strength of the image are low.

It is preferable that the black resin layer further contains a thermal polymerization inhibitor in addition to the above components. Examples of thermal polymerization inhibitors include hydroquinone, p-methoxyphenol, di-
t-butyl-p-cresol, pyrogallol, t-butylcatechol, benzoquinone, 4,4′-thiobis (3
-Methyl-6-t-butylphenol), 2,2'-methylenebis (4-methyl-6-t-butylphenol), 2-mercaptobenzimidazole, phenothiazine and the like.

Further, known additives such as a plasticizer, a surfactant and a solvent can be added to the black resin layer, if necessary.

The coating solution for forming the black resin layer can be obtained, for example, by dispersing a mixture of the above-described black colorant and an alkali-soluble binder (optionally, an organic solvent) and then mixing other materials.

The photosensitive transfer sheet for forming the photosensitive resin layer and the black resin layer used in the present invention is obtained by forming a photosensitive resin layer on a temporary support by coating, and then forming the black resin layer on the photosensitive resin layer. It can be obtained by providing a resin layer by coating. Alternatively, it can be obtained by forming an alkali-soluble thermoplastic resin layer by coating on a temporary support, and then providing a photosensitive resin layer and a black resin layer as described above. The same can be applied to the case where a photosensitive resin layer, a black resin layer and the like are directly provided on the light-transmitting support. The thickness of the black resin layer is preferably in the range of 0.5 to 3 μm.

The black resin layer (light-shielding film) can be provided on the temporary support by a known method. For example, it can be formed by applying a solution of the above-mentioned black resin layer forming material using an applicator such as a spinner, a wiper, a roller coater, a curtain coater, a knife coater, a wire bar coater, an extruder and the like, and then drying. Examples of the solvent used for preparing the coating liquid for forming a black resin layer include methyl ethyl ketone, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, cyclohexanone, cyclohexanol, ethyl lactate, methyl lactate, and caprolactam.

In the present invention, when a black matrix is formed on a pixel sheet, an alkali-soluble thermoplastic resin is formed between a temporary support and a photosensitive resin layer.
Use a photosensitive transfer sheet. The resin constituting the alkali-soluble thermoplastic resin preferably has a substantial softening point of 80 ° C. or less. Examples of the alkali-soluble thermoplastic resin having a softening point of 80 ° C. or lower include a saponified product of ethylene and an acrylate copolymer, a saponified product of styrene and a (meth) acrylate copolymer, and vinyltoluene and (meth) acrylic. At least one selected from a saponified acid ester copolymer, a poly (meth) acrylate, and a saponified product such as a (meth) acrylate copolymer such as butyl (meth) acrylate and vinyl acetate. However, the organic polymer having a softening point of about 80 ° C. or lower according to “Plastic Performance Handbook” (edited by the Japan Plastics Industry Federation, All Japan Plastics Molding Federation, published by the Industrial Research Institute, issued on October 25, 1968). Among them, those soluble in an alkaline aqueous solution can be used. In addition, even in the case of an organic polymer substance having a softening point of 80 ° C. or higher, various plastics compatible with the polymer substance are added to the organic polymer substance to lower the substantial softening point to 80 ° C. or lower. Is also possible. Further, in order to control the adhesive force with the temporary support in these organic polymer substances, the material has a substantial softening point of 8%.
It is possible to add various polymers, supercooled substances, adhesion improvers or surfactants, release agents, etc. within a range not exceeding 0 ° C. Specific examples of preferred plasticizers include polypropylene glycol, polyethylene glycol, dioctyl phthalate, diheptyl phthalate, dibutyl phthalate, tricresyl phosphate, cresyl diphenyl phosphate biphenyl diphenyl phosphate. The thickness of the thermoplastic resin layer is 6
μm or more is preferred. When the thickness of the thermoplastic resin layer is 5 μm or less, it is difficult to completely absorb the unevenness of the underlayer of 1 μm or more. The upper limit is generally about 100 μm or less, preferably about 50 μm or less, from the viewpoint of developability and production suitability.

In the steps (A-6) and (B-2) of the method for producing an image sheet having a black matrix according to the present invention, the photosensitive resin layer provided on the black resin layer (or an alkali Light is irradiated onto the soluble thermoplastic resin layer through a photomask to expose the photosensitive resin layer, and a light source used for exposure is selected according to the photosensitivity of the light-shielding photosensitive resin layer. For example, a known light source such as an ultra-high pressure mercury lamp, a xenon lamp, a carbon arc lamp, an argon laser, etc. can be used.

Next, the removal of the alkali-soluble thermoplastic resin layer and the removal of the photosensitive resin layer in the unexposed area and the black resin layer thereunder will be described. As described above, when forming a black matrix after forming pixels, a photosensitive transfer sheet in which an alkali-soluble thermoplastic resin layer, a photosensitive resin layer, and a black resin layer are sequentially provided on a temporary support is used. . Due to the cushioning properties of the alkali-soluble thermoplastic resin layers, these layers can be formed on the pixels with good adhesion. In the present invention, the removal of the alkali-soluble thermoplastic resin layer and the removal of the photosensitive resin layer in the unexposed area and the black resin layer thereunder are simultaneously performed. That is, the alkali-soluble thermoplastic resin layer and the black resin layer are soluble in an alkaline aqueous solution, and the photosensitive resin layer is water-soluble or alkali-soluble. Two layers are removed.

As described above, when pixels are formed after the formation of the black matrix, a photosensitive transfer sheet in which a photosensitive resin layer and a black resin layer are sequentially provided on a temporary support is used or coated. Form each layer. Also in this case, the photosensitive resin layer in the unexposed area and the black resin layer thereunder are simultaneously removed.

As the treatment liquid used for removing the alkali-soluble thermoplastic resin layer, a dilute aqueous solution of an alkaline substance is used. Further, a treatment liquid to which a small amount of an organic solvent miscible with water is added is used. Is also good. Suitable alkaline substances include alkali metal hydroxides (eg, sodium hydroxide, potassium hydroxide), alkali metal carbonates (eg, sodium carbonate, potassium carbonate), alkali metal bicarbonates (eg, sodium bicarbonate) , Potassium bicarbonate), alkali metal silicates (eg, sodium silicate, potassium silicate), alkali metal metasilicates (eg, sodium metasilicate, potassium metasilicate),
Examples include triethanolamine, diethanolamine, monoethanolamine, morpholine, tetraalkylammonium hydroxides (eg, tetramethylammonium hydroxide) or trisodium phosphate. The concentration of the alkaline substance is 0.01% by weight to 3%.
0% by weight, and the pH is preferably from 8 to 14. Suitable organic solvents miscible with water include methanol, ethanol, 2-propanol, 1-propanol, butanol, diacetone alcohol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol mono-n-butyl ether. ,
Benzyl alcohol, acetone, methyl ethyl ketone,
Examples include cyclohexanone, ε-caprolactone, γ-butyrolactone, dimethylformamide, dimethylacetamide, hexamethylphosphoramide, ethyl lactate, methyl lactate, ε-caprolactam, and N-methylpyrrolidone. The concentration of the organic solvent miscible with water is
0.1 to 30% by weight is common. The treatment liquid may contain a surfactant. As the surfactant, an alkyl naphthalene sulfonate having a low foaming property is particularly preferable. The treatment liquid is particularly preferably an aqueous solution of ethylene glycol mono n-butyl ether and sodium carbonate, or an aqueous solution of benzyl alcohol, sodium carbonate, sodium hydroxide, and sodium butylnaphthalenesulfonate. Removal of the alkali-soluble thermoplastic resin layer,
This layer is immersed in the above-mentioned processing solution or sprayed with the processing solution. By appropriately preparing this treatment liquid, the three or two layers can be removed.

Instead of removing the three or two layers at the same time, only the photosensitive resin layer may be developed first. In that case,
When the photosensitive resin layer is water-soluble, it may be performed with water or an aqueous solution containing an alkaline compound, a surfactant and the like. The removal of the photosensitive resin layer is performed by immersing the layer in the liquid or spraying the liquid. The removal of the black resin layer alone can be performed using the treatment liquid used for removing the alkali-soluble thermoplastic resin layer or a solution in which the materials shown in the treatment liquid are appropriately mixed. The removal of the black resin layer is performed by immersing this layer in the liquid or spraying the liquid.

It is necessary to remove the cured photosensitive resin layer on the black resin layer so as not to adversely affect the lower black resin layer. When the photosensitive resin layer is water-soluble, it is generally removed by warm water (including hot water; 40 to 100 ° C.). Further, it is also preferable to use the above-mentioned surfactant.
An organic solvent may be used. It is also possible to insert a washing step after the above-mentioned development processing.

When the black resin layer contains a polymerizable monomer, the black resin layer can be heat-treated after the developing step. Thereby, the durability of the black resin layer can be improved.

A known transfer sheet or coating solution for forming each pixel can be used. The transfer sheet for forming each pixel is preferably a sheet in which an alkali-soluble thermoplastic resin layer, an oxygen blocking layer, and a photosensitive colored resin layer are provided on a temporary support. As the temporary support and the alkali-soluble thermoplastic resin layer, those used in the above-described photosensitive transfer sheet for forming a black matrix can be used. The photosensitive colored resin layer can be formed by appropriately using the colorant, the polymerizable monomer, and the alkali-soluble binder. The oxygen barrier layer is a layer made of polyvinyl alcohol, polyvinylpyrrolidone, or the like and having low oxygen permeability. The coating liquid can be prepared mainly by dissolving the photosensitive colored resin layer forming material in an organic solvent. Hereinafter, the present invention will be described in more detail based on examples,
The present invention is not limited to these.

[0044]

【Example】

Example 1 On a temporary support of a 100 μm-thick polyethylene terephthalate film, a coating solution having the following composition H1 was applied and dried to form a thermoplastic resin layer having a dry film thickness of 20 μm.

<Composition H1 of Coating Solution for Forming Thermoplastic Resin Layer> Methyl methacrylate / 2-ethylhexyl acrylate / benzyl methacrylate / methacrylic acid copolymer (copolymer composition ratio (molar ratio) = 55 / 11.7 / 4. 5 / 28.8, weight average molecular weight = 80000) 15.0 parts by weight Polypropylene glycol diacrylate 6.5 parts by weight (average molecular weight = 822) tetraethylene glycol dimethacrylate 1.5 parts by weight p-toluenesulfonamide 0.5 Parts by weight Benzophenone 1.0 parts by weight Methyl ethyl ketone 30.0 parts by weight

Next, a coating liquid for forming a photosensitive resin layer having the following composition B1 was applied on the thermoplastic resin layer and dried to form a photosensitive resin layer layer having a dry film thickness of 1.6 μm. <Composition B1 of coating solution for forming photosensitive resin layer> Polyvinyl alcohol (PVA205 manufactured by Kuraray Co., Ltd., saponification degree: 80%) 173.2 parts by weight Formalin condensate of p-diazophenylamine 17.3 parts by weight Fluorine Surfactant 8 parts by weight Distilled water 2800 parts by weight

On a temporary support having the thermoplastic resin layer and the photosensitive resin layer, a coating solution for forming a black resin layer having the following composition 1 is applied and dried to obtain a black resin having a dry film thickness of 1.0 μm. A layer was formed.

<Composition 1 of coating solution for forming black resin layer> Benzyl methacrylate / methacrylic acid copolymer (molar ratio = 70/30, intrinsic viscosity = 0.12) 10.06 parts by weight dipentaerythritol hexaacrylate 06 parts by weight Carbon black 17.00 parts by weight Hydroquinone monomethyl ether 0.01 parts by weight F177P (surfactant manufactured by Dainippon Ink Co., Ltd.) 0.07 parts by weight Propylene glycol monomethyl ether acetate 40.00 parts by weight Methyl ethyl ketone 125. 00 parts by weight

Further, a cover sheet of polypropylene (12 μm thick) was pressed on the black resin layer to prepare a photosensitive transfer sheet for forming a black matrix.

(Preparation of photosensitive transfer sheet for forming each pixel)
On a temporary support of a polyethylene terephthalate film having a thickness of 75 μm, a coating solution having the following composition A was applied and dried to form a thermoplastic resin layer having a dry film thickness of 20 μm.

<Composition A of Coating Solution for Forming Thermoplastic Resin Layer> Methyl methacrylate / 2-ethylhexyl acrylate / benzyl methacrylate / methacrylic acid copolymer (copolymer composition ratio (molar ratio) = 55 / 11.7 / 4. 5 / 28.8, weight average molecular weight = 80000) 4.5 parts by weight Styrene / acrylic acid copolymer (copolymer composition ratio (molar ratio) = 7/3 weight average molecular weight = 8000) 10.5 parts by weight BPE- 500 (polyfunctional acrylate manufactured by Shin-Nakamura Chemical Co., Ltd.) 7.0 parts by weight F177P (fluorinated surfactant manufactured by Dainippon Ink Co., Ltd.) 0.26 parts by weight methanol 30.6 parts by weight methyl ethyl ketone 18.6 Parts by weight 1-methoxy-2-propanol 9.3 parts by weight

Next, the following composition B was formed on the thermoplastic resin layer.
And dried to a dry film thickness of 1.6 μm.
An m-thick oxygen barrier layer was provided. <Composition B of coating solution for forming oxygen barrier layer> Polyvinyl alcohol (PVA205, manufactured by Kuraray Co., Ltd., saponification degree: 80%) 13 parts by weight Polyvinylpyrrolidone (PVP, K-30, manufactured by GAF Corporation) 6 parts by weight Methanol 173 parts by weight distilled water 211.4 parts by weight

Three temporary supports having the thermoplastic resin layer and the oxygen barrier layer were prepared, and on each of the oxygen barrier layers,
A coating solution for forming each of the red (R), green (G), and blue (B) layers shown in Table 1 below is applied and dried, and a colored photosensitive film having a dry film thickness of 2 μm (R, G, B) is formed. A photosensitive resin layer was formed, and three types of photosensitive colored resin sheets were produced. Further, a polypropylene (thickness: 12) is formed on the photosensitive colored resin layer.
μm).

[0054]

[Table 1] Table 1: Composition of coating solution for forming photosensitive colored resin layer ── Red layer Green layer Blue layer ─────────────────────────────────── Benzyl methacrylate / 25.7 33.5 39.9 Methacryl Acid copolymer (molar ratio = 72/28, molecular weight = 30000) Dipentaerythritol hexaacryl 27.0 25.2 31.9 Rate (DPHA, manufactured by Nippon Kayaku Co., Ltd.) F177P (fluorinated surfactant, 0.17 0.19 0.19 Dai Nippon Ink) 2,4-bis (trichloromethyl) -1.31 0 1.52 6- [4- (N, N-diethoxycarbonylmethyl) -3-bromophenyl] s-triazine 2-trichloromethyl-5- (p- Styl 0 1.200 0 lyl) -1,3,4-oxadiazole phenothiazine 0.022 0.020 0 .026 Chromophthal Red A2B 27.0 --- --- Paliotor Yellow LY-1820 9.3 7.98 --- Monastrali Green 6Y --- 31.92 --- Heliogen Blue L6700F --- --- 25.6 Lionogen Violet VRL --- --- 0.8 Methoxypropylene glycol 310 310 310 Methyl ethyl ketone 460 460 460 ──────────────────────────────── ───

Using the photosensitive transfer sheet for forming a black matrix and the three types of photosensitive transfer sheets for forming a pixel obtained above, a pixel sheet and a pixel sheet with a black matrix (color filter) are prepared as follows. did. On a transparent glass substrate (thickness 1.1 mm), the photosensitive transfer sheet for forming the black matrix is
The coating sheet was peeled off, and the photosensitive black resin layer surface was pressed against the transparent glass substrate surface with a pressure of 0.8 kg / cm ² using a laminator (VP-II, manufactured by Taisei Laminator Co., Ltd.).
Lamination was performed under the conditions of heating at 130 ° C. and a transfer speed of 1.5 m / min. Subsequently, the temporary support was peeled off at the interface with the thermoplastic resin layer, and the temporary support was removed. Next, exposure (ultraviolet light) is performed through a predetermined photomask, and the thermoplastic resin layer is dissolved and removed with an alkali developing solution (TPD: an alkaline aqueous solution manufactured by Fuji Photo Film Co., Ltd.), the photosensitive resin layer is developed, and The black resin layer was simultaneously removed (etched) to form a black resin layer having a patterned surface-hardened photosensitive resin layer. Thereafter, the cured photosensitive resin layer on the patterned black resin layer was removed with hot water at 80 ° C. to form a black matrix on the glass substrate. The optical density of the obtained black matrix is
3.5, no under-etching phenomenon was observed, and 8
A fine line pattern of μm could be formed.

The photosensitive transfer sheet for red (R) pixel formation is peeled off the cover sheet on the black matrix side surface of the transparent glass substrate provided with the black matrix, and the photosensitive red resin layer surface is made of transparent glass. Laminator (VP-II, Taisei Laminator Co., Ltd.)
Was applied under the conditions of a pressure of 0.8 kg / cm ² and a heating of 130 ° C., and then the temporary support was peeled off at the interface with the thermoplastic resin layer to remove the temporary support. Next, exposure (ultraviolet light) is performed through a predetermined photomask, development is performed to remove the thermoplastic resin layer and the oxygen blocking layer, and to develop the photosensitive resin layer, thereby forming a patterned red resin layer (red pixel). Formed. Next, the green (G) pixel and the blue (B) pixel are also transferred to the green (G) pixel forming photosensitive transfer sheet or the blue (B) pixel similarly to the formation of the red pixel.
It was formed using a photosensitive transfer sheet for pixel formation. Thus, a color filter was obtained. The obtained black matrix had a high optical density as described above, and no image defects such as white spots were observed. No color unevenness was observed in the coloring of each pixel.

Example 2 A photosensitive transfer sheet for forming a black matrix was prepared in the same manner as in Example 1, except that a thermoplastic resin layer was not provided when the photosensitive transfer sheet for forming a black matrix was formed. Was prepared, and the subsequent steps were performed in the same manner to prepare a color filter. The obtained black matrix had a high optical density (3.5), and no image defects such as white spots were observed. No color unevenness was observed in the coloring of each pixel.

Example 3 A color filter was prepared in the same manner as in Example 1, except that the black matrix was formed by coating as described below.

On a transparent glass substrate (1.1 mm thick)
A coating liquid for forming a black resin layer having the following composition 1 was applied and dried to form a black resin layer having a dry film thickness of 1.0 μm. <Composition 1 of coating liquid for forming black resin layer> Benzyl methacrylate / methacrylic acid copolymer (molar ratio = 70/30, intrinsic viscosity = 0.12) 10.06 parts by weight Dipentaerythritol hexaacrylate 10.06 parts by weight Carbon black 17.00 parts by weight Hydroquinone monomethyl ether 0.01 parts by weight F177P (surfactant manufactured by Dainippon Ink Co., Ltd.) 0.07 parts by weight Propylene glycol monomethyl ether acetate 40.00 parts by weight Methyl ethyl ketone 125.00 parts by weight

Next, the following composition B1 was formed on the black resin layer.
A coating liquid for forming a photosensitive resin layer consisting of
A photosensitive resin layer having a dry film thickness of 1.6 μm was provided. <Composition B1 of coating solution for forming photosensitive resin layer> Polyvinyl alcohol (PVA205 manufactured by Kuraray Co., Ltd., saponification degree: 80%) 173.2 parts by weight Formalin condensate of p-diazophenylamine (manufactured by GAF Corporation) (PVP, K-30) 17.3 parts by weight Fluorinated surfactant 8 parts by weight Distilled water 2800 parts by weight

The obtained black matrix had a high optical density (3.5), and no image defects such as white spots were observed. No color unevenness was observed in the coloring of each pixel.

Example 4 Using the photosensitive transfer sheet for forming each pixel and the photosensitive transfer sheet for forming a black matrix of Example 1, a color filter was prepared as follows.

On the surface of the transparent glass substrate, the red (R)
The photosensitive transfer sheet for pixel formation is peeled off from the covering sheet, and the surface of the photosensitive red resin layer is applied to the surface of the transparent glass substrate at 0.8 kg / cm ² using a laminator (VP-II, manufactured by Taisei Laminator Co., Ltd.). Then, the temporary support was peeled off at the interface with the thermoplastic resin layer, and the temporary support was removed. Next, exposure (ultraviolet light) is performed through a predetermined photomask, development is performed to remove the thermoplastic resin layer and the oxygen blocking layer, and to develop the photosensitive resin layer, thereby forming a patterned red resin layer (red pixel). Formed. Next, the green (G) pixel and the blue (B) pixel are also formed using the green (G) pixel forming photosensitive transfer sheet or the blue (B) pixel forming photosensitive transfer sheet in the same manner as the formation of the red pixel. Formed.

On the pixel side surface of the transparent glass substrate (1.1 mm thick) on which each of the pixels was formed, the photosensitive transfer sheet for forming a black matrix and the covering sheet were peeled off, and the photosensitive black resin was removed. Laminator (VP-II, Taisei Laminator Co., Ltd.)
), And bonded at a pressure of 0.8 kg / cm ² , heating at 130 ° C., and a transfer speed of 1.5 m / min. Then, the temporary support is bonded at the interface with the thermoplastic resin layer. The temporary support was peeled off. Next, exposure (ultraviolet light) is performed through a predetermined photomask, and the thermoplastic resin layer is dissolved and removed with an alkali developing solution (TPD: an alkaline aqueous solution manufactured by Fuji Photo Film Co., Ltd.), the photosensitive resin layer is developed, and The black resin layer was simultaneously removed (etched) to form a black resin layer having a patterned surface-hardened photosensitive resin layer. Thereafter, the cured photosensitive resin layer on the patterned black resin layer was removed with hot water at 80 ° C., and a black matrix was formed on the pixels of the glass substrate to obtain a color filter. The optical density of the obtained black matrix was 3.5, and a fine line pattern of 8 μm could be formed. Further, neither image defects such as white spots nor coloring of each pixel showed uneven density.

Example 5 A color filter was prepared in the same manner as in Example 4, except that the photosensitive colored resin layer for pixels was formed by coating as described below.

On the surface of the transparent glass substrate, R, G, and B pixels each having a thickness of 2 μm were formed using each coating solution of each coating composition for forming a photosensitive layer shown in Table 2 below.

[0067]

[Table 2] Table 2: Composition of photosensitive layer forming coating solution for forming pixels ───── R layer G layer B layer ベ ン ジ ル Benzyl methacrylate / 60.0 60.0 60.0 Methacrylic acid copolymer (Molar ratio = 73/27 Viscosity = 0.12) Pentaerythritol 43.2 43.2 43.2 Tetraacrylate Michler's ketone 2.4 2.4 2.4 2- (o-chlorophenyl 2.5 2.5 2.5 Diphenylimidazole dimer Irgasin Red BPT (red) 5.4 --- --- Sudan blue (blue) --- 5.2 --- Copper phthalocyanine (green) --- --- 5.6 Carbon black (black) --- --- --- Methyl cellosolve acetate 560 560 560 Methyl ethyl ketone 280 280 280 ───────────────────────── ────────── A color filter was thus obtained, and the obtained black matrix had a high optical density (3.5), and no image defects such as white spots were observed. No unevenness in density was observed in the coloring.

Comparative Example 1 A color filter was prepared in the same manner as in Example 3, except that the photosensitive colored resin layer for pixels was formed by coating in the same manner as in Example 4. The resulting black matrix has a high optical density (3.5)
However, image defects such as white spots are seen,
In addition, density unevenness was observed in the coloring of each pixel.

[0069]

According to the production method of the present invention, it is possible to easily obtain a pixel sheet with a black matrix having a high optical density black matrix and pixels having almost no density unevenness. The obtained pixel sheet is particularly useful as a color filter. The photosensitive transfer sheet of the present invention can be used particularly advantageously in the above method.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an example of a method for producing a multicolor image sheet with a black matrix of the present invention.

FIG. 2 is a view for explaining a step following FIG. 1;

FIG. 3 is a view for explaining another example of the method for producing a multicolor image sheet with a black matrix of the present invention.

FIG. 4 is a view for explaining a step following FIG. 3;

[Explanation of symbols]

 11, 31 light-transmitting support 12R, 32R photosensitive red resin layer 12RP, 32RP red pixel 12GP, 32GP green pixel 12BP, 32BP blue pixel 13 red pixel photomask 10 pixel sheet 14 temporary support 15 alkaline soluble Thermoplastic resin layer 16, 36 Photosensitive resin layer 17, 37 Black resin layer 18, 38 Black matrix mask 16C, 36C Cured water-soluble photosensitive resin layer 17B, 37B Black matrix

Claims (8)

[Claims] 1. A method for producing a pixel sheet having a black matrix comprising the following steps (1) to (7): (1) a step of laminating a photosensitive colored resin layer on the surface of a light-transmitting support; 2) exposing the surface of the photosensitive colored resin layer imagewise;
Forming a pixel having the color of the colored resin layer by developing; (3) forming a pixel of a color other than the above by using a photosensitive colored resin having a color different from that of the photosensitive colored resin layer; (1)
(4) Further, if necessary, the step (3) is performed once or more to form a plurality of pixels of different colors on the light-transmitting support. Forming a pixel sheet to obtain a pixel sheet; (5) forming a photosensitive transfer sheet, in which an alkali-soluble thermoplastic resin layer, a photosensitive resin layer, and a black resin layer are sequentially laminated on a temporary support, on the pixel sheet, After overlapping so that the resin layer and the pixel surface are in contact with each other, the temporary support is peeled off to laminate a black resin layer, a photosensitive resin layer, and an alkali-soluble thermoplastic resin layer on the pixel surface of the pixel sheet in this order. Step: (6) After exposing the photosensitive resin layer of the pixel sheet imagewise, the alkali-soluble thermoplastic resin layer is removed by contacting with an alkaline aqueous solution, and the photosensitive resin layer in an unexposed region and the photosensitive resin layer are removed. Step to remove the side of the black resin layer; and (7) exposed to form a black matrix consisting of black resin between pixels by which the photosensitive resin layer into contact with hot water above 40 ° C. to remove. 2. The method according to claim 1, wherein the lamination of the photosensitive colored resin layer is performed by superposing the photosensitive colored resin layer of a photosensitive transfer sheet having a photosensitive colored resin layer on the surface of a light-transmitting support. 3. A method for producing a pixel sheet having a black matrix according to item 1. 3. The method for producing a pixel sheet having a black matrix according to claim 1, wherein the lamination of the photosensitive colored resin layer is performed by applying and drying a photosensitive colored resin layer forming coating solution. 4. A photosensitive transfer sheet in which an alkali-soluble thermoplastic resin layer, a photosensitive resin layer, and a black resin layer comprising a black colorant and an alkali-soluble binder are sequentially laminated on a temporary support. 5. A method for producing a pixel sheet having a black matrix comprising the following steps (1) to (7): (1) a black resin layer and a photosensitive resin layer on the surface of the light-transmitting support; (2) a step of exposing the photosensitive resin layer imagewise and then contacting an alkaline aqueous solution to remove the unexposed region of the photosensitive resin layer and the black resin layer therebelow. (3) a step of forming a black matrix made of a black resin by removing the exposed photosensitive resin layer by contacting it with warm water of 40 ° C. or higher; (4) applying a photosensitive material having a black matrix to a light-transmitting support; Stacking a photosensitive transfer sheet having a photosensitive colored resin layer so that the photosensitive colored resin layer and the black matrix surface are in contact with each other, and laminating a photosensitive colored resin layer; Forming a pixel having a color of the colored resin layer by exposing the surface of the colored resin layer imagewise and developing; (6) photosensitive coloring having a color different from the photosensitive colored resin layer described above; Pixels of colors other than those described above are formed using resin as described in (4) above.
(7) Further, if desired, the step (6) is performed one or more times to form a region defined by the black matrix on the light-transmitting support. A step of forming pixels of a plurality of different colors. 6. A photosensitive transfer sheet in which a photosensitive resin layer and a black resin layer are laminated in this order on a temporary support is prepared by laminating the photosensitive resin layer and the black resin layer on a temporary support. 6. The method for producing a pixel sheet having a black matrix according to claim 5, wherein the method is performed by overlapping the black resin layer and the surface of the light-transmitting support so that the temporary support is peeled off. 7. The lamination of the photosensitive resin layer and the black resin layer is such that a coating solution for forming a black resin layer is applied to the surface of the light-transmitting support, dried, and then a coating solution for forming a photosensitive resin layer is applied. The method for producing a pixel sheet having a black matrix according to claim 5, which is performed by drying. 8. A photosensitive transfer sheet in which a photosensitive resin layer and a black resin layer comprising a black colorant and an alkali-soluble binder are sequentially laminated on a temporary support.