JP5991040B2 - Black photosensitive resin composition, black matrix and color filter - Google Patents

Description

  The present invention relates to a black photosensitive resin composition, a black matrix, and a color filter used for an optical color filter used in a color television, a liquid crystal color television, a camera and the like.

  The color filter is an indispensable component for colorization of liquid crystal display devices that have been applied in various fields in recent years. The color filter is a colored pixel such as red, green, or blue on a transparent substrate such as glass. Is provided. In general, a light-shielding portion (black matrix) is provided between the colored pixels in order to improve contrast and to prevent malfunction caused by light of TFT elements provided on the counter substrate in the liquid crystal display device.

  As a method for forming a black matrix, a method of etching a metal chromium thin film has been used. However, due to cost and environmental load problems, replacement with a photolithography method using a black photosensitive resin composition containing a light shielding material is possible. Progressing.

  Formation of the black matrix by the photolithography method using the black photosensitive resin composition is performed as follows. First, a black photosensitive resin composition coating film is formed by spin coating or slit coating. After drying and heat treatment as necessary, exposure processing is performed through a photomask having a predetermined pattern. Subsequently, a black matrix can be formed by removing an unexposed portion by a development process and performing a heat hardening process.

  As a light shielding material used in the black photosensitive resin composition, carbon black having excellent light shielding properties and cost performance is widely used. By maintaining the pigment concentration of carbon black in the solid content of the black photosensitive resin composition at a certain level or higher, a black matrix having a light shielding property equivalent to that of metal chromium in a practical film thickness range that does not impair the flatness of the color filter. It is possible to form.

  One of the characteristics other than the light shielding property required for the black matrix is insulation. This is to prevent the black matrix from being electrically connected to the transparent electrode and causing an unintended electric field to cause display defects.

  However, since carbon black is a conductor, when the pigment concentration is increased to a level necessary to maintain the light shielding property of the black matrix, the insulating property is remarkably lowered. That is, there is a problem that the light shielding property and the insulating property are traded off.

  As measures for solving the trade-off between light shielding properties and insulating properties, proposals have been made to provide insulating properties by coating carbon black with a resin and further performing an oxidation treatment (Patent Documents 1 and 2). ).

  However, in this method, since the density of the light-shielding agent in the black matrix, that is, the carbon black pigment is lowered by the resin coating, there is a problem that the light-shielding property when compared at the same pigment concentration is inferior to that without the coating. Increasing the pigment concentration of the black photosensitive resin composition can supplement the light shielding property, but in this case, the effect of the resin coating is reduced and the insulating property is lowered.

On the other hand, by using a black photosensitive resin composition obtained by mixing a dispersion of carbon black and a dispersion of an organic pigment used for forming colored pixels of a color filter, a proposal has been made to achieve both light shielding properties and insulating properties. (Patent Literature 3, Patent Literature 4).

  However, these organic pigments have a low light shielding property compared to carbon black, so that the amount added needs to be increased in order to improve the light shielding property. In this case, components such as dispersants and dispersion aids contained in the dispersion liquid of the organic pigment also increase. Therefore, considering that a certain amount of the photosensitive component is necessary in the black photosensitive resin composition, the light shielding property is improved. Has its own limits. Further, the compatibility between the dispersions is poor, and foreign matter may be generated.

  In contrast, a black photosensitive resin composition using a pigment dispersion in which carbon black and an organic pigment are simultaneously uniformly dispersed has been proposed (Patent Document 5). In this case, although the above problem is solved, it is very difficult to select a dispersant capable of uniformly dispersing both carbon black and organic pigment. Further, the insulating performance of the carbon black dispersion is highly dependent on the dispersant, and priority may be given to uniform dispersion with the organic pigment, which may impair the essential insulating performance.

  In this way, development aimed at achieving both light shielding and insulating properties in the black matrix is still in the developing stage. In order to compensate for the deterioration of the flatness of the color filter due to high definition, which has been studied energetically in recent years, it is required to make the black matrix thinner. In order to meet these demands, it is necessary to achieve both a light shielding property and an insulating property at a higher level than in the past. However, at present, no material has been obtained.

Japanese Patent No. 3543501 Japanese Patent No. 3893666 Japanese Patent Laid-Open No. 2005-215150 JP 2009-75446 A JP 2010-235739 A

  The present invention has been made in view of the above circumstances, and provides a black photosensitive resin composition capable of forming a black matrix having both high light shielding properties and insulating properties, and a black using the same. It is to provide a matrix and a color filter.

  As a means for solving the above problems, the invention according to claim 1 is a black photosensitive resin composition containing at least a light shielding material, a resin, a polymerizable monomer, a photopolymerization initiator, and a solvent, It contains carbon black and a dye as a light shielding material, the carbon black content is 40 to 50 weight percent in the solid content of the black photosensitive resin composition, and the dye content is the black photosensitive resin composition. 1 to 20 percent by weight in the solid content of the black photosensitive resin composition.

  Moreover, invention of Claim 2 contains a red dye and a blue dye as said dye, It is a black photosensitive resin composition of Claim 1 characterized by the above-mentioned.

  In the invention according to claim 3, C.I. I. Solvent Red 124, C.I. I. The black photosensitive resin composition according to claim 2, comprising Solvent Blue 87.

  Moreover, invention of Claim 4 contains the yellow dye and the purple dye as said dye, It is a black photosensitive resin composition of Claim 1 characterized by the above-mentioned.

  In the invention according to claim 5, C.I. I. Solvent Yellow 83 is C.I. I. The black photosensitive resin composition according to claim 4, comprising SolventViolet 36.

  Further, the invention described in claim 6 contains the compound represented by the chemical formula (1) as the photopolymerization initiator, and the black photosensitivity according to any one of claims 1 to 5. Resin composition.

〔化式（１）において、Ｘ^１、Ｘ^３、Ｘ^６は、それぞれ独立にＲ^１１、ＯＲ^１１、ＣＯＲ^１１、ＳＲ^１１、ＣＯＮＲ^１２Ｒ^１３又はＣＮを表し、Ｘ^２は置換基を有していてもよい炭素原子数１〜２０のアルキル基、置換基を有していてもよい炭素原子数６〜３０のアリール基、置換基を有していてもよい炭素原子数７〜３０のアリールアルキル基又は置換基を有していてもよい炭素原子数２〜２０の複素環基を表し、Ｘ^４及びＸ^５は、それぞれ独立に、Ｒ^１１、ＯＲ^１１、ＳＲ^１１、ＣＯＲ^１１、ＣＯＮＲ^１２Ｒ^１３、ＮＲ^１２ＣＯＲ^１１、ＯＣＯＲ^１１、ＣＯＯＲ^１１、ＳＣＯＲ^１１、ＣＯＳＲ^１１、ＣＯＳＲ^１１、ＣＳＯＲ^１１、ＣＮ、ハロゲン原子又は水酸基を表す。Ｒ^１１、Ｒ^１２及びＲ^１３は、それぞれ独立に、水素原子、置換基を有していてもよい炭素原子数１〜２０のアルキル基、置換基を有していてもよい炭素原子数６〜３０のアリール基、置換基を有していてもよい炭素原子数７〜３０のアリールアルキル基又は置換基を有していてもよい炭素原子数２〜２０の複素環基を表す。ａ及びｂはそれぞれ独立に、０〜３である。〕
また、請求項７に記載の発明は、請求項１〜６のいずれか１項に記載の黒色感光性樹脂組成物を用いて形成され、膜厚１．０μｍ当たりの光学濃度（ＯＤ値）が４．０／μｍ以上であり、体積抵抗率が１．０×１０^１２Ω・ｃｍ以上であることを特徴とするブラックマトリックスである。

[In the chemical formula (1), X ¹ , X ³ and X ⁶ each independently represent R ¹¹ , OR ¹¹ , COR ¹¹ , SR ¹¹ , CONR ¹² R ¹³ or CN, and X ² has a substituent. An optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 30 carbon atoms, and an optionally substituted aryl having 7 to 30 carbon atoms Represents an alkyl group or an optionally substituted heterocyclic group having 2 to 20 carbon atoms, and X ⁴ and X ⁵ each independently represent R ¹¹ , OR ¹¹ , SR ¹¹ , COR ¹¹ , CONR ^{12. R 13, NR 12 COR 11,} OCOR 11, COOR 11, SCOR 11, COSR 11, COSR 11, CSOR 11, CN, a halogen atom or a hydroxyl group. R ¹¹ , R ¹² and R ¹³ are each independently a hydrogen atom, an optionally substituted alkyl group having 1 to 20 carbon atoms, or an optionally substituted carbon atom having 6 to 6 carbon atoms. It represents a 30 aryl group, an optionally substituted arylalkyl group having 7 to 30 carbon atoms, or an optionally substituted heterocyclic group having 2 to 20 carbon atoms. a and b are each independently 0-3. ]
The invention described in claim 7 is formed using the black photosensitive resin composition described in any one of claims 1 to 6 , and has an optical density (OD value) per 1.0 μm film thickness. The black matrix is 4.0 / μm or more and has a volume resistivity of 1.0 × 10 ¹² Ω · cm or more.

  The invention according to claim 8 is a color filter comprising the black matrix according to claim 7.

  By using the black photosensitive resin composition of the present invention, it is possible to efficiently produce a black matrix having sufficient light shielding properties and good insulating properties even in a thin film that does not impair the flatness of the color filter. I can do it. Since the color filter of the present invention includes the black matrix having both light shielding properties and insulating properties as described above, the contrast of the liquid crystal display device can be increased and the reliability can be improved.

(Black photosensitive resin composition)
The black photosensitive resin composition of the present invention includes at least a light shielding material, a resin, a polymerizable monomer, a photopolymerization initiator, and a solvent, and includes carbon black and a dye as the light shielding material, and the carbon black content is the black color. It is 40 weight percent or more in the solid content of the photosensitive resin composition, and the content of the dye is 1 to 20 weight percent in the solid content of the black photosensitive resin composition. Hereinafter, each component which comprises the black photosensitive resin composition of this invention is demonstrated.

<Shading material>
<Carbon black>
As the carbon black used in the present invention, any of lamp black, acetylene black, thermal black, channel black, furnace black and the like may be used.

  The content of carbon black is 40 to 50 weight percent or more, preferably 42 to 48 weight percent in the solid content of the black photosensitive resin composition. When the content is 40% by weight or less, the black matrix formed using the black photosensitive resin composition has insufficient light shielding properties. On the other hand, when the content is 50 weight percent or more, the black matrix lacks insulation.

<Dye>
In the black photosensitive resin composition of the present invention, a dye is used to improve the light shielding property while suppressing the pigment concentration of carbon black within the above range. Dyes can be used alone, but in order to avoid the black display in the liquid crystal display device, it is necessary to use a mixture of complementary colors such as red and blue, or yellow and purple. desirable.

  Specific examples of the red dye include C.I. I. SolventRed 1, 2, 3, 4, 8, 16, 17, 18, 19, 23, 24, 25, 26, 27, 30, 33, 35, 41, 43, 45, 48, 49, 52, 68, 69, 72, 73, 83: 1, 84: 1, 89, 90, 90: 1, 91, 92, 106, 109, 110, 118, 119, 122, 124, 125, 127, 130, 132, 135, 141, 143, 145, 146, 149, 150, 151, 155, 160, 161, 164, 164: 1, 165, 166, 168, 169, 172, 175, 179, 180, 181, 182, 195, 196, 197, 198, 207, 208, 210, 212, 214, 215, 218, 222, 223, 225, 227, 229, 230, 233, 234, 235, 23 , 238,239,240,241,242,243,244,245,247,248, C. I. Acid Red 6, 11, 26, 60, 88, 111, 186, 215, C.I. I. Basic Red 1, 2, 13, 14, 22, 27, 29, 39, C.I. I. DirectRed 4, 23, 31, 75, 76, 79, 80, 81, 83, 84, 149, 224, C.I. I. SulfurRed 5, 6, 7, C.I. I. Reactive Red 8, 22, 46, 120, C.I. I. Disperse Red 4, 11, 54, 55, 58, 65, 73, 127, 129, 141, 196, 210, 229, 354, 356, and the like. Among them, C.I. excellent in solubility and heat resistance. I. Solvent Red 83, 92, 124 are preferably used, and C.I. I. Most preferably, SolventRed 124 is used.

  Specific examples of blue dyes include C.I. I. Solvent Blue 2, 3, 4, 5, 7, 18, 25, 26, 35, 36, 37, 38, 43, 44, 45, 48, 51, 58, 59, 59: 1, 63, 64, 67, 68, 69, 70, 78, 79, 83, 94, 97, 98, 100, 101, 102, 104, 105, 111, 112, 122, 124, 128, 129, 132, 136, 137, 138, 139, 143, C. I. Acid Blue 22, 25, 40, 78, 92, 113, 129, 167, 230, C.I. I. BasicBlue 3, 7, 9, 17, 41, 66, C.I. I. DirectBlue 71, 78, 98, 106, 108, 192, 201, C.I. I. DirectBlue 71, 78, 98, 106, 108, 192, 201, C.I. I. SulfurBlue 2, 3, 7, 9, 13, 15, C.I. I. VatBlue 6, 14, 26, 30, C.I. I. Reactive Blue 1, 2, 7, 19, C.I. I. DisperseBlue 3, 24, 79, 82, 87, 106, 125, 165, 183 and the like can be mentioned. Among these, C.I. excellent in heat resistance. I. Solvent Blue 70, 87, 94 or C.I. I. Preferably, BasicBlue 7 is used, and C.I. I. Most preferably, SolventBlue 87 is used.

  Specific examples of yellow dyes include C.I. I. Solvent Yellow 2, 3, 7, 12, 13, 14, 16, 18, 19, 21, 25, 25: 1, 27, 28, 29, 30, 33, 34, 36, 42, 43, 44, 47, 56, 62, 72, 73, 77, 79, 81, 82, 83, 83: 1, 88, 89, 90, 93, 94, 96, 98, 104, 107, 114, 116, 117, 124, 130, 131, 133, 135, 141, 143, 145, 146, 157, 160: 1, 161, 162, 163, 167, 169, 172, 174, 175, 176, 179, 180, 181, 182, 183, 184, 185, 186, 187, 189, 190, 191, C.I. I. Acid Yellow 17, 23, 25, 36, 38, 42, 44, 72, 78, C.I. I. Basic Yellow 11, 23, 25, 28, 41, C.I. I. Direct Yellow 26, 27, 28, 33, 44, 50, 86, 142, C.I. I. Sulfur Yellow 4, C.I. I. Vat Yellow 2, 12, 20, 33, C.I. I. Reactive Yellow 1, 2, 4, 14, 16, C.I. I. Disperse Yellow 3, 4, 5, 7, 23, 33, 42, 60, 64 etc. are mentioned. Among them, C.I. excellent in solubility and heat resistance. I. Solvent Yellow 83 is preferably used.

  Specific examples of the purple dye include C.I. I. SolventViolet 2, 8, 9, 11, 13, 14, 21, 21: 1, 26, 31, 36, 37, 38, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59, 60, 61, C.I. I. BasicViolet 1, 3, 18, 39, 66, C.I. I. DirectViolet 51, C.I. I. Sulfur Violet 2, 3, 4, C.I. I. VatViolet 1, 3, 9, 13, 15, 16, C.I. I. Reactive Violet 2, 4, C.I. I. DisperseViolet 1, 6, 12, 26, 27, 28 etc. are mentioned. Among them, C.I. excellent in solubility and heat resistance. I. SolventViolet 36 is preferably used.

  In addition to the above, an orange dye, a green dye, or the like can be used in combination in order to improve the light-shielding property or improve the color tone of black display.

  Specific examples of the orange dye include C.I. I. Solvent Orange 1, 2, 3, 4, 5, 7, 11, 14, 20, 23, 25, 31, 40: 1, 41, 45, 54, 56, 58, 60, 62, 63, 70, 75, 77, 80, 81, 86, 99, 102, 103, 105, 106, 107, 108, 109, 110, 111, 112, 113, C.I. I. Direct Orange 26, 29, 34, 37, 72, C.I. I. Vat Orange 2, 5, 11, 15, 18, 20, C.I. I. Reactive Orange 1, 4, 7, 13, 16, 20, C.I. I. Disperse Orange 13, 29, 30 etc. are mentioned.

  Specific examples of the green dye include C.I. I. Solvent Green 1, 3, 4, 5, 7, 28, 29, 32, 33, 34, 35, C.I. I. AcidGreen 25, 27, C.I. I. BasicGreen 3, 4, C.I. I. DirectGreen 26, 28, C.I. I. SulfurGreen 2, 3, 6, C.I. I. VatGreen 3, 5, 8 etc. are mentioned.

  The content of the dye is 1 to 20 weight percent or more, preferably 2 to 15 weight percent in the solid content of the black photosensitive resin composition. When the content is 1% by weight or less, the effect of improving the light shielding property due to the addition of the dye cannot be obtained. On the other hand, when the content is 20% by weight or more, the solubility of the dye is insufficient, and crystal precipitation may occur.

<Resin>
Resins include acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate, and other alkyl acrylates or alkyl methacrylates, cyclic cyclohexyl acrylate or methacrylate, hydroxyethyl acrylate or methacrylate, styrene, etc. Among these, a resin having a molecular weight of about 5000 to 100,000, which is synthesized using about 3 to 5 types of monomers, can be preferably used.

  In addition, as a resin in which an unsaturated double bond is added to a part of an acrylic resin, a compound such as the above acrylic resin, isocyanate ethyl acrylate having at least one vinyl group and an isocyanate group, or methacryloyl isocyanate is reacted. The photosensitive copolymer having an acid value of 50 to 150 can be preferably used from the viewpoints of heat resistance, developability and the like.

  Furthermore, bisphenol A type epoxy resin, bisphenol F type epoxy resin, novolak type epoxy resin, polycarboxylic acid glycidyl ester, polyol polyglycidyl ester, aliphatic or alicyclic epoxy resin, amine epoxy resin, triphenolmethane type epoxy resin, Ordinary photopolymerizable resins such as epoxy (meth) acrylate obtained by reacting an epoxy resin such as a dihydroxybenzene type epoxy resin and (meth) acrylic acid, or a cardo resin can also be used.

<Polymerizable monomer>
Examples of the photopolymerizable monomer include ethylene glycol (meth) acrylate, diethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, and polypropylene glycol. Di (meth) acrylate, hexane di (meth) acrylate, neopentyl glycol di (meth) acrylate, glycerin di (meth) acrylate, glycerin tri (meth) acrylate, glycerin tetra (meth) acrylate, tetratrimethylolpropane tri (meth) Acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta ( Data) acrylate, dipentaerythritol hexa (meth) acrylate and the like, these components are used alone or as a mixture.

  Various modified (meth) acrylates, urethane (meth) acrylates, and the like can also be used. Among these, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, and dipentaerythritol hexa (meth) acrylate, which have a small double bond equivalent and can achieve high sensitivity, are preferably used.

  As content of a photopolymerizable monomer, it is preferable that it is 5 to 20 weight% in solid content of a black photosensitive resin composition, More preferably, it is the range of 10 to 15 weight%. When the content of the photopolymerizable monomer is within this range, the sensitivity and development speed of the black photosensitive resin composition can be adjusted to a level suitable for production. When the content of the photopolymerizable monomer is 5% by weight or less, the sensitivity of the black photosensitive resin composition is insufficient.

<Photopolymerization initiator>
In order to compensate for the decrease in sensitivity due to the addition of the dye, it is preferable to use an oxime ester compound that can achieve high sensitivity as the photopolymerization initiator.

  Specific examples of the oxime ester compound include 2- (O-benzoyloxime) -1- [4- (phenylthio) phenyl] -1,2-octanedione, 1- (O-acetyloxime) -1- [9. -Ethyl-6- (2-methylbenzoyl) -9H-carbazol-3-yl] ethanone (both manufactured by BASF Japan Ltd.), and the like. It is preferable to use a compound.

X ¹ is particularly preferably a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-group, from the viewpoint of ease of synthesis, sensitivity, solubility, and storage stability when contained in a photosensitive coloring composition. Such as butyl group, isobutyl group, t-butyl group, n-amyl group, isoamyl group, t-amyl group, n-hexyl group, 2-ethylhexyl group and other alkyl groups having 10 or less carbon atoms, cyclopentyl group, cyclohexyl group, etc. Such as cyclic alkyl group, methoxymethyl group, ethoxymethyl group, ethoxyethyl group, 2- (1-methoxypropyl) group, 2- (1-ethoxypropyl) group, etc. It is an alkyl group having 10 or less carbon atoms and having one ether bond in the methylene chain.

X ³ is particularly preferably hydrogen, or a methyl group, an ethyl group, an n-propyl group, or an isopropyl group from the viewpoint of ease of synthesis, sensitivity, solubility, and storage stability when contained in a photosensitive coloring composition. , N-butyl group, isobutyl group, t-butyl group, n-amyl group, isoamyl group, t-amyl group, n-hexyl group and the like, such as alkyl groups having 6 or less carbon atoms, cyclopentyl group, cyclohexyl group, etc. 6 or less cyclic alkyl groups, methoxymethyl groups, ethoxymethyl groups, ethoxyethyl groups, 2- (1-methoxypropyl) groups, 2- (1-ethoxypropyl) groups, etc., which have 6 or less carbon atoms and are in the methylene chain An alkyl group having one ether bond.

X ⁶ is particularly preferably a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-group, from the viewpoint of ease of synthesis, sensitivity, solubility, and storage stability when contained in a photosensitive coloring composition. C 6 or less alkyl group such as butyl group, isobutyl group, t-butyl group, n-amyl group, isoamyl group, t-amyl group, n-hexyl group, etc., C 6 or less carbon group such as cyclopentyl group, cyclohexyl group, etc. A cyclic alkyl group, a methoxymethyl group, an ethoxymethyl group, an ethoxyethyl group, a 2- (1-methoxypropyl) group, a 2- (1-ethoxypropyl) group, etc. having 6 or less carbon atoms and an ether bond in the methylene chain It is an alkyl group having one.

X ² is particularly preferably a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-group, from the viewpoint of ease of synthesis, sensitivity, solubility, and storage stability when contained in a photosensitive coloring composition. C 6 or less alkyl group such as butyl group, isobutyl group, t-butyl group, n-amyl group, isoamyl group, t-amyl group, n-hexyl group, etc., C 6 or less carbon group such as cyclopentyl group, cyclohexyl group, etc. A cyclic alkyl group, a methoxymethyl group, an ethoxymethyl group, an ethoxyethyl group, a 2- (1-methoxypropyl) group, a 2- (1-ethoxypropyl) group, etc. having 6 or less carbon atoms and an ether bond in the methylene chain It is an alkyl group having one.

X ⁴ and X ⁵ are particularly preferably hydrogen, a methyl group, an ethyl group, or an n-propyl group from the viewpoints of ease of synthesis, sensitivity, solubility, and storage stability when contained in a photosensitive coloring composition. , An isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, an n-amyl group, an isoamyl group, a t-amyl group, an n-hexyl group and the like.

  Specific examples of the photopolymerization initiator represented by the chemical formula (1) include a compound represented by the chemical formula (2).

上記化式（２）で表される光重合開始剤を用いることにより、染料を添加した際にも高感度を維持することが可能である。開始剤の含有量は、前記黒色感光性樹脂組成物の固形分中１〜２０重量％であることが好ましく、より好ましくは２〜１５重量％の範囲である。光重合開始剤の含有量が１重量％以下である場合、黒色感光性樹脂組成物の感度が不足する。一方、光重合開始剤の含有量が２０重量％以上である場合、ブラックマトリックスのパターン線幅が太りすぎてしまう。

By using the photopolymerization initiator represented by the above chemical formula (2), high sensitivity can be maintained even when a dye is added. The content of the initiator is preferably 1 to 20% by weight, more preferably 2 to 15% by weight in the solid content of the black photosensitive resin composition. When the content of the photopolymerization initiator is 1% by weight or less, the sensitivity of the black photosensitive resin composition is insufficient. On the other hand, when the content of the photopolymerization initiator is 20% by weight or more, the pattern line width of the black matrix becomes too thick.

  In the black photosensitive resin composition of the present invention, other photopolymerization initiators can be used in combination with the photopolymerization initiator represented by the chemical formula (1). Other photopolymerization initiators include 4-phenoxydichloroacetophenone, 4-t-butyl-dichloroacetophenone, diethoxyacetophenone, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1 [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl)- Acetophenone compounds such as butan-1-one, benzoin compounds such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzyldimethyl ketal, benzophenone, benzoylbenzoic acid, methyl benzoylbenzoate, 4-phenylbenzene Benzophenone compounds such as zophenone, hydroxybenzophenone, acrylated benzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3 ', 4,4'-tetra (t-butylperoxycarbonyl) benzophenone, thioxanthone, 2- Thioxanthone compounds such as chlorothioxanthone, 2-methylthioxanthone, isopropylthioxanthone, 2,4-diisopropylthioxanthone, 2,4-diethylthioxanthone, 2,4,6-trichloro-s-triazine, 2-phenyl-4,6- Bis (trichloromethyl) -s-triazine, 2- (p-methoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -S-triazine, 2 -Piperonyl-4,6-bis (trichloromethyl) -s-triazine, 2,4-bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphth-1-yl) -4,6-bis (Trichloromethyl) -s-triazine, 2- (4-methoxy-naphth-1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2,4-trichloromethyl- (piperonyl) -6- Triazines such as triazine, 2,4-trichloromethyl (4'-methoxystyryl) -6-triazine, bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide, 2,4,6-trimethylbenzoyldiphenylphosphine Phosphine compounds such as oxide, 9,10-phenanthrenequinone, camphorquinone, ethyl anthraquino Quinone compounds such as borate compounds, carbazole compounds, imidazole compounds, titanocene compounds and the like. These photopolymerization initiators can be used alone or in combination of two or more at any ratio as required. The content of the other photopolymerization initiator is preferably 0.1 to 5% by weight, more preferably 0.2 to 1% by weight in the solid content of the black photosensitive resin composition.

<Solvent>
Solvents include methanol, ethanol, ethyl cellosolve, ethyl cellosolve acetate, diglyme, cyclohexanone, ethylbenzene, xylene, isoamyl acetate, n amyl acetate, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether, propylene glycol mono Ethyl ether acetate, diethylene glycol, diethylene glycol monomethyl ether, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetate, triethylene glycol, Liethylene glycol monomethyl ether, triethylene glycol monomethyl ether acetate, triethylene glycol monoethyl ether, triethylene glycol monoethyl ether acetate, liquid polyethylene glycol, dipropylene glycol monomethyl ether, dipropylene glycol monomethyl ether acetate, dipropylene glycol monoethyl ether , Dipropylene glycol monoethyl ether acetate, lactic acid ester, ethyl ethoxypropionate and the like.

<Other additives>
The black photosensitive resin composition of the present invention can be used in combination with a surfactant for further improving the coating property, a silane coupling agent for improving the adhesion to the substrate, and the like.

  Examples of the surfactant include fluorine surfactants such as perfluoroalkyl phosphates and perfluoroalkyl carboxylates, anionic surfactants such as higher fatty acid alkali salts, alkyl sulfonates, and alkyl sulfates, and higher amines. Cationic surfactants such as halogenates and quaternary ammonium salts, nonionic surfactants such as polyethylene glycol alkyl ethers, polyethylene glycol fatty acid esters, sorbitan fatty acid esters and fatty acid monoglycerides, amphoteric surfactants, silicone surfactants Surfactants such as agents can be used, and these may be used in combination.

As silane coupling agents, vinyl silanes such as vinyltrimethoxysilane and vinyltriethoxysilane, epoxy silanes such as 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, and 3-glycidoxypropyldimethoxysilane, Methacrylsilanes such as 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, N-2- (aminoethyl) -3-aminopropylmethyldimethoxysilane, 3-aminopropyltrimethoxysilane, N- Aminosilanes such as phenyl-3-aminopropyltrimethoxysilane, 3-mercaptopropylmethyldimethoxysilane, mercaptosilanes such as 3-mercaptopropyltrimethoxysilane, 3-isocyanatopropyltrieth Isocyanate silanes such as Shishiran like. (Black matrix)
The black matrix of the present invention is formed using the black photosensitive resin composition, has an optical density (OD value) per film thickness of 1.0 μm of 4.0 / μm or more, and has a volume resistivity of 1.0. × 1012 Ω · cm or more. Since the black matrix of the present invention has a high OD value even in a thin film of about 1.0 μm, it does not impair the flatness of the color filter while maintaining sufficient light shielding performance. In addition, since the volume resistivity is as high as 1.0 × 10 12 Ω · cm or higher, it is possible to prevent liquid crystal alignment defects caused by conduction between the black matrix and the transparent electrode.

  As a board | substrate which forms a black matrix, what has a certain amount of transmittance | permeability with respect to visible light is preferable, More preferably, what has the transmittance | permeability of 80% or more is preferable. Examples thereof include various glass substrates such as quartz glass, borosilicate glass, and aluminosilicate glass, and various plastic substrates such as polyester resin and polyolefin resin.

  The black matrix is formed as follows. A coating film of the black photosensitive resin composition is formed on the substrate by a coating method such as spray coating, spin coating, slit coating, or roll coating.

  The film thickness of the black matrix is preferably 0.8 to 1.2 μm, more preferably 0.9 to 1.1 μm. When the thickness of the black matrix is 0.8 μm or less, the light shielding property is insufficient. On the other hand, when the film thickness of the black matrix is 1.2 μm or more, the flatness of the color filter is impaired, and liquid crystal alignment defects are likely to occur.

  After removing the residual solvent in the coating film by drying under reduced pressure and pre-baking treatment, exposure is performed through a photomask having a predetermined pattern. As the exposure light source, a conventionally known light source such as an ultrahigh pressure mercury lamp, a xenon lamp, or a carbon arc lamp can be used.

Next, it develops using the developing solution which consists of alkaline aqueous solution. Examples of the developer comprising the alkaline aqueous solution include a potassium carbonate aqueous solution, a sodium carbonate aqueous solution, or a sodium hydrogen carbonate aqueous solution, and those obtained by adding an appropriate sea surface activator to these aqueous solutions. A predetermined black matrix pattern can be formed on the substrate by washing with water, drying and baking after development.

<Color filter>
The color filter of the present invention comprises the black matrix.
In the color filter of the present invention, since the black matrix is a thin film, the flatness after forming colored pixels is good. For this reason, when used in a liquid crystal display device, good display characteristics can be obtained without causing liquid crystal alignment failure.

  The color filter of the present invention is formed as follows. On the substrate on which the black matrix is formed, a coating film of a colored photosensitive resin composition containing a color material corresponding to each colored pixel of the color filter is formed. After drying, exposure is performed through a photomask having a pattern corresponding to the opening of the black matrix. After the unexposed portion is removed by development processing, the colored pixels can be formed in the opening portion of the black matrix by baking. By performing a series of operations using a colored photosensitive resin composition containing, for example, red, green, and blue color materials, a color filter having red, green, and blue pixels can be manufactured.

  EXAMPLES Hereinafter, although an Example etc. are given and this invention is demonstrated further in detail, this invention is not limited to these Examples.

  The black photosensitive resin composition No. used in the examples and comparative examples as follows. 1-No. 9 was adjusted. Table 1 shows the blending ratio of the color materials.

＜黒色感光性樹脂組成物Ｎｏ．１の調整＞
ビスフェノールフルオレン型エポキシ樹脂 ３．６１ｇ
（新日鐵化学社製「Ｖ２５９‐ＭＥ」固形分５６．１％）
ジペンタエリスリトールペンタ／ヘキサアクリレート混合物 １．０５ｇ
（日本化薬社製「ＫＡＹＡＲＡＤ ＤＰＨＡ」）
光重合開始剤 化式（２） ０．７０ｇ
カーボンブラック ３２．３１ｇ
プロピレングリコールモノメチルアセテート分散液
（固形分２６．０％、固形分中の顔料濃度７５．０重量％）
Ｃ．Ｉ．ＳｏｌｖｅｎｔＲｅｄ１２４ ９．１３ｇ
（クラリアントジャパン社製「Ｓａｖｉｎｙｌ Ｆｉｒｅ Ｒｅｄ ３ＧＬＳ」）
シクロヘキサノン溶液（固形分１０．０％）
Ｃ．Ｉ．ＳｏｌｖｅｎｔＢｌｕｅ８７ ３６．２１ｇ
（有本化学工業社製「Ｐｌａｓｔ Ｂｌｕｅ ８５８０」）
シクロヘキサノン溶液（固形分２．５％）
プロピレングリコールモノメチルエーテルアセテート １６．９９ｇを加えてよく攪拌し、
黒色感光性樹脂組成物Ｎｏ．１の １００．００ｇ
（固形分１４．０％、カーボンブラック顔料濃度４５．０重量％、
染料濃度１３．０重量％）を得た。

<Black photosensitive resin composition No. Adjustment of 1>
Bisphenol fluorene type epoxy resin 3.61g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g
Carbon black 32.31g
Propylene glycol monomethyl acetate dispersion (solid content: 26.0%, pigment concentration in solid content: 75.0% by weight)
C. I. SolventRed124 9.13g
("Savinyl Fire Red 3GLS" manufactured by Clariant Japan)
Cyclohexanone solution (solid content 10.0%)
C. I. SolventBlue87 36.21g
("Plast Blue 8580" manufactured by Arimoto Chemical Industry Co., Ltd.)
Cyclohexanone solution (solid content 2.5%)
Add 16.99 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 1 of 100.00g
(Solid content 14.0%, carbon black pigment concentration 45.0% by weight,
A dye concentration of 13.0% by weight) was obtained.

<Black photosensitive resin composition No. Adjustment of 2>
Bisphenol fluorene type epoxy resin 2.71 g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g Carbon black 35.90 g
Propylene glycol monomethyl acetate dispersion
(Solid content 26.0%, pigment concentration in solid content 75.0% by weight)
C. I. SolventRed124 7.00g
("Savinyl Fire Red 3GLS" manufactured by Clariant Japan)
Cyclohexanone solution (solid content 10.0%)
C. I. SolventBlue87 27.99g
("Plast Blue 8580" manufactured by Arimoto Chemical Industry Co., Ltd.)
Cyclohexanone solution (solid content 2.5%)
Add 24.65 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 2 100 g (solid content 14.0%, carbon black pigment concentration 50.0% by weight, dye concentration 10.0% by weight) was obtained.

<Black photosensitive resin composition No. Adjustment of 3>
Bisphenol fluorene type epoxy resin 4.54g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g Carbon black 28.72 g
Propylene glycol monomethyl acetate dispersion (solid content 26.0%,
(Pigment concentration in solid content: 75.0% by weight)
C. I. SolventRed124 11.20g
("Savinyl Fire Red 3GLS" manufactured by Clariant Japan)
Cyclohexanone solution (solid content 10.0%)
C. I. SolventBlue87 44.78g
("Plast Blue 8580" manufactured by Arimoto Chemical Industry Co., Ltd.)
Cyclohexanone solution (solid content 2.5%)
Add 9.01 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 3 100 g (solid content 14.0%, carbon black pigment concentration 40.0% by weight, dye concentration 16.0% by weight) was obtained.

<Black photosensitive resin composition No. Adjustment of 4>
Bisphenol fluorene type epoxy resin 3.61 g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g Carbon black 32.31 g
Propylene glycol monomethyl acetate dispersion
(Solid content 26.0%, pigment concentration in solid content 75.0% by weight)
C. I. SolventRed83 9.13g
("Aizen Spiron Red BEH made by Hodogaya Chemical Co., Ltd."
Special ") cyclohexanone solution (solid content 10.0%)
C. I. SolventBlue87 36.21g
("Plast Blue 8580" manufactured by Arimoto Chemical Industry Co., Ltd.)
Cyclohexanone solution (solid content 2.5%)
Add 16.99 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 4 100 g (solid content 14.0%, carbon black pigment concentration 45.0% by weight, dye concentration 13.0% by weight) was obtained.

<Black photosensitive resin composition No. Adjustment of 5>
Bisphenol fluorene type epoxy resin 3.59g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g Carbon black 32.31 g
Propylene glycol monomethyl acetate dispersion
(Solid content 26.0%, pigment concentration in solid content 75.0% by weight)
C. I. Solvent Yellow 83 9.13g
("Savinyl Yellow RLSN" manufactured by Clariant Japan)
Cyclohexanone solution (solid content 10.0%)
C. I. SolventViolet 36 18.26g
(“Kayset Violet AR” manufactured by Nippon Kayaku Co., Ltd.)
Cyclohexanone solution (solid content 5.0%)
Add 34.96 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 5 100 g (solid content 14.0%, carbon black pigment concentration 45.0 wt%, dye concentration 13.0 wt%) was obtained.

<Black photosensitive resin composition No. Adjustment of 6>
Bisphenol fluorene type epoxy resin 4.84g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 0.98g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.65 g Carbon black 23.33 g
Propylene glycol monomethyl acetate dispersion
(Solid content 26.0%, pigment concentration in solid content 75.0% by weight)
C. I. SolventRed124 12.96g
("Savinyl Fire Red 3GLS" manufactured by Clariant Japan)
Cyclohexanone solution (solid content 10.0%)
C. I. SolventBlue87 51.85g
("Plast Blue 8580" manufactured by Arimoto Chemical Industry Co., Ltd.)
Cyclohexanone solution (solid content 2.5%)
Add 5.39 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 6 100 g (solid content 13.0%, carbon black pigment concentration 35.0% by weight, dye concentration 20.0% by weight) was obtained.

<Black photosensitive resin composition No. 7 adjustment>
Bisphenol fluorene type epoxy resin 1.54g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g Carbon black 39.49 g
Propylene glycol monomethyl acetate dispersion
(Pigment concentration in solid content 26.0% solid content 75.0% by weight)
C. I. SolventRed124 5.62g
("Savinyl Fire Red 3GLS" manufactured by Clariant Japan)
Cyclohexanone solution (solid content 10.0%)
C. I. SolventBlue87 22.32g
("Plast Blue 8580" manufactured by Arimoto Chemical Industry Co., Ltd.)
Cyclohexanone solution (solid content 2.5%)
Add 29.28 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 7 100 g (solid content 14.0%, carbon black pigment concentration 55.0% by weight, dye concentration 8.0% by weight) was obtained.

<Black photosensitive resin composition No. Adjustment of 8>
Bisphenol fluorene type epoxy resin 4.53g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g Carbon black 37.33 g
Propylene glycol monomethyl acetate dispersion
(Solid content 26.0%, pigment concentration in solid content 75.0% by weight)
Add 56.42 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 8 100 g (solid content 14.0%, carbon black pigment concentration 52.0% by weight) was obtained.

<Black photosensitive resin composition No. 9 adjustment>
Bisphenol fluorene type epoxy resin 2.25g
(“V259-ME” manufactured by Nippon Steel Chemical Co., Ltd., solid content 56.1%)
Dipentaerythritol penta / hexaacrylate mixture 1.05g
(“KAYARAD DPHA” manufactured by Nippon Kayaku Co., Ltd.)
Photopolymerization initiator Chemical formula (2) 0.70 g Carbon black 32.31 g
Propylene glycol monomethyl acetate dispersion
(Solid content 26.0%, pigment concentration in solid content 75.0% by weight)
C. I. PigmentRed254 6.46g
Propylene glycol monomethyl acetate dispersion (solid content 20.0%, pigment concentration in solid content 70.0% by weight)
C. I. PigmentBlue 15: 6 6.46g
Propylene glycol monomethyl acetate dispersion (solid content 20.0%, pigment concentration in solid content 70.0% by weight)
Add 50.78 g of propylene glycol monomethyl ether acetate and stir well.
Black photosensitive resin composition No. 9 100 g (solid content 14.0%, carbon black pigment concentration 45.0 wt%, red / blue pigment concentration 13.0 wt%) was obtained.

<Formation of black matrix>
<Preparation of Black Matrix Substrates 1a-9a>
The above black photosensitive resin composition No. 1 was spin-coated on a glass substrate (“EAGLE XG” manufactured by Corning). 1 coating film was formed. After drying, it was pre-baked on a hot plate at 90 ° C. for 1 minute. Next, the ultraviolet light was irradiated to the coating film of the black photosensitive resin composition using the ultra high pressure mercury lamp (illuminance 26mW / cm < ² >). After the exposure, development was performed with a 2.5 wt% aqueous sodium carbonate solution, and baking was performed in a clean oven at 200 ° C. for 20 minutes to prepare a black matrix substrate 1a. The same operation was repeated for the black photosensitive resin composition No. 2-No. 9, black matrix substrates 2a to 9a were produced.

<Preparation of Black Matrix Substrates 1b-7b>
A metal chromium thin film was formed on a glass substrate (Corning “EAGLE XG”) by vapor deposition. After dry-cleaning using a UV cleaning apparatus, the black photosensitive resin composition No. 1 was formed on the chromium substrate. 1 coating film was formed. After drying, it was pre-baked on a hot plate at 90 ° C. for 1 minute. Next, using a super high pressure mercury lamp (illuminance of 26 mW / cm ² ), exposure and development are performed so that the chromium is partially exposed, and baking is performed in a clean oven at 200 ° C. for 20 minutes to form a black matrix substrate having a chromium electrode. Obtained. An aluminum electrode was formed on the substrate by vapor deposition to obtain a black matrix substrate 1b having a structure in which a black matrix was sandwiched between a chromium electrode and an aluminum electrode. The same operation was repeated for the black photosensitive resin composition No. 2-No. 9, black matrix substrates 2b to 9b were produced.

  Appearance and OD value of the obtained black matrix substrates 1a to 9a were evaluated. Further, the volume resistivity of the black matrix substrates 1b to 9b was evaluated. The results are shown in Table 1.

<Appearance evaluation>
The black matrix substrates 1a to 7a were observed with an optical microscope, and those with no appearance abnormality were marked with ◯ and those with appearance abnormality were marked with ◯.

<OD value evaluation>
The OD values of the black matrix substrates 1a to 7a were measured with an optical densitometer (“D200-II” manufactured by Macbeth). By dividing by the film thickness measured with a contact-type film thickness meter, the OD value per 1.0 μm film thickness was calculated.

<Volume resistivity evaluation>
A voltage of DC 5 V was applied between the chromium electrodes and the aluminum electrodes of the black matrix substrates 1b to 7b using a minute current measuring device (“237 type source / measure unit” manufactured by Keithley Instruments Co., Ltd.), and the current value was measured. The volume resistivity was calculated from the obtained current value.

In Examples 1 to 5 using the black photosensitive resin composition of the present invention, there was no poor appearance, the OD value per 1 μm was 4.0 / μm or more, and the volume resistivity was 1.0E + 12 Ω · cm or more. It was. On the other hand, Comparative Example 1 with a low carbon black pigment concentration had an OD value lower than 4.0 / μm, whereas Comparative Example 2 with a high carbon black pigment concentration had a volume resistivity of 1.0E + 12 Ω · cm or less. . Further, Comparative Example 3 in which the OD value was increased by increasing the carbon black pigment concentration without using a dye had a significantly low volume resistivity. Furthermore, abnormal appearance was observed in Comparative Example 4 where high OD was attempted by mixing the red / blue pigment dispersion.

  By using the black photosensitive resin composition of the present invention, the OD value per 1 μm is 4.0 / μm or more and the volume resistivity is 1.0E + 12 Ω · cm or more. A black matrix can be formed. By using a color filter provided with the black matrix, a liquid crystal display device with high contrast and good reliability can be manufactured.

Claims (8)

  A black photosensitive resin composition containing at least a light shielding material, a resin, a polymerizable monomer, a photopolymerization initiator, and a solvent, wherein the light shielding material contains carbon black and a dye, and the carbon black content is the black A black photosensitive resin, characterized in that it is 40 to 50 weight percent in the solid content of the photosensitive resin composition, and the content of the dye is 1 to 20 weight percent in the solid content of the black photosensitive resin composition. Composition.   The black photosensitive resin composition according to claim 1, wherein the dye contains a red dye and a blue dye.   As the red dye, C.I. I. Solvent Red 124, C.I. I. The black photosensitive resin composition according to claim 2, comprising Solvent Blue 87.   The black photosensitive resin composition according to claim 1, comprising a yellow dye and a purple dye as the dye.   As the yellow dye, C.I. I. Solvent Yellow 83 is C.I. I. The black photosensitive resin composition according to claim 4, comprising SolventViolet 36. The black photosensitive resin composition according to any one of claims 1 to 5, comprising a compound represented by the chemical formula (1) as the photopolymerization initiator.

[In the chemical formula (1), X ¹ , X ³ and X ⁶ each independently represent R ¹¹ , OR ¹¹ , COR ¹¹ , SR ¹¹ , CONR ¹² R ¹³ or CN, and X ² has a substituent. An optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 30 carbon atoms, and an optionally substituted aryl having 7 to 30 carbon atoms Represents an alkyl group or an optionally substituted heterocyclic group having 2 to 20 carbon atoms, and X ⁴ and X ⁵ each independently represent R ¹¹ , OR ¹¹ , SR ¹¹ , COR ¹¹ , CONR ^{12. R 13, NR 12 COR 11,} OCOR 11, COOR 11, SCOR 11, COSR 11, COSR 11, CSOR 11, CN, a halogen atom or a hydroxyl group. R ¹¹ , R ¹² and R ¹³ are each independently a hydrogen atom, an optionally substituted alkyl group having 1 to 20 carbon atoms, or an optionally substituted carbon atom having 6 to 6 carbon atoms. It represents a 30 aryl group, an optionally substituted arylalkyl group having 7 to 30 carbon atoms, or an optionally substituted heterocyclic group having 2 to 20 carbon atoms. a and b are each independently 0-3. ] It is formed using the black photosensitive resin composition of any one of Claims 1-6 , The optical density (OD value) per film thickness of 1.0 micrometer is 4.0 / micrometer or more, Volume resistance A black matrix having a rate of 1.0 × 10 ¹² Ω · cm or more.   A color filter comprising the black matrix according to claim 7.