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CN-122018233-A - Colored photosensitive resin composition and color filter

CN122018233ACN 122018233 ACN122018233 ACN 122018233ACN-122018233-A

Abstract

The application provides a coloring photosensitive resin composition and a color filter, and relates to the technical field of liquid crystal display. The total mass of the raw materials of the coloring photosensitive resin composition is calculated as 100%, and the coloring photosensitive resin composition comprises 40-60% of a colorant, 2.5-4.5% of an alkali-soluble resin, 2-3.5% of an acrylate monomer, 0.05-0.1% of a photopolymerization initiator, 0.02-0.03% of an auxiliary agent and 35-52% of a solvent, wherein the colorant comprises 8.3-9.8% of an aluminum phthalocyanine Dye, 17.7-18.5% of Y and 26-28.3% of G-Dye based on the total mass of the raw materials of the coloring photosensitive resin composition. The application can maintain better photosensitivity and developing performance through the cooperative optimization configuration of each component. Ensures the full solidification of the exposed area and the thorough dissolution of the unexposed area, and avoids the problems of non-contour line part residue and flaking.

Inventors

  • YANG TAO
  • ZHANG HONGYU

Assignees

  • 阜阳欣奕华新材料科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260228

Claims (10)

  1. 1. The coloring photosensitive resin composition is characterized by comprising, by taking the total mass of raw materials of the coloring photosensitive resin composition as 100%, 40-60% of a colorant, 2.5-4.5% of an alkali-soluble resin, 2-3.5% of an acrylate monomer, 0.05-0.1% of a photopolymerization initiator, 0.02-0.03% of an auxiliary agent and 35-52% of a solvent; wherein the colorant comprises 8.3-9.8% of aluminum phthalocyanine Dye, 17.7-18.5% of Y150 and 26-28.3% of G-Dye calculated by taking the total mass of raw materials of the coloring photosensitive resin composition as 100%.
  2. 2. The colored photosensitive resin composition of claim 1, wherein the aluminum phthalocyanine dye has a chemical formula: ; Wherein A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4 each independently comprises one or more of F, cl and Br.
  3. 3. The colored photosensitive resin composition according to claim 2, wherein the process for producing an aluminum phthalocyanine dye comprises: Mixing phthalonitrile, anhydrous aluminum chloride, 1, 8-diazabicyclo [5.4.0] undec-7-ene and n-amyl alcohol to obtain first slurry, heating and refluxing the first slurry, then cooling the first slurry, mixing the first slurry heated and refluxed with methanol and water to obtain green slurry, and sequentially drying, crushing, dispersing and dissolving the green slurry to obtain the aluminum phthalocyanine dye.
  4. 4. The colored photosensitive resin composition according to claim 3, wherein at least one of the following conditions is satisfied: a. The mass ratio of the phthalonitrile to the anhydrous aluminum chloride to the 1, 8-diazabicyclo [5.4.0] undec-7-ene to the n-amyl alcohol is 2.5-3:1:15:2.5-3; b. the temperature of the heating reflux is 133-138 ℃ and the time is 4.9-5.1h; c. The end temperature of the first cooling is 28-32 ℃; d. after the crushing, the granularity of the particles is not more than 0.2 mu m; e. the dispersing and dissolving includes mixing the green slurry once subjected to the drying and the crushing with a dispersing agent and propylene glycol methyl ether; Wherein the dispersant comprises a methacrylate.
  5. 5. The colored photosensitive resin composition according to claim 1, wherein the G-Dye production method comprises: Mixing tetrafluoro phthalonitrile, potassium carbonate and acetonitrile to obtain a first solution, performing second cooling, and stirring with phenyl parahydroxybenzoate and acetonitrile to obtain an intermediate; And mixing the intermediate with zinc chloride and benzyl cyanide, reacting, washing, separating solid from liquid, and drying to obtain the G-Dye.
  6. 6. The colored photosensitive resin composition according to claim 5, wherein at least one of the following conditions is satisfied: f. the mass ratio of the tetrafluoro phthalonitrile to the potassium carbonate to the acetonitrile is 1.5-1.8:0.5:24-25; g. the end temperature of the second cooling is 2 ℃; h. the stirring time is 7.8-8.3h; i. The mass ratio of the intermediate to the zinc chloride to the benzyl cyanide is 0.7:0.15-0.2:0.5, the reaction temperature is 160-180 ℃ and the reaction time is 4.9-5.2h.
  7. 7. The colored photosensitive resin composition according to claim 1, wherein the alkali-soluble resin has a molecular weight of 10000 to 50000 and an acid value of 100 mgkoh/g; Or alternatively, the first and second heat exchangers may be, The alkali-soluble resin has a molecular weight of not more than 10000 and an acid value of not more than 50 mgKOH/g.
  8. 8. The colored photosensitive resin composition of claim 1, wherein the photopolymerization initiator comprises an oxime ester initiator; the oxime ester initiator comprises PBG-345 and/or PBG-327.
  9. 9. The colored photosensitive resin composition according to any one of claims 1 to 8, wherein at least one of the following conditions is satisfied: c. The acrylic ester monomer comprises at least one of methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, sec-butyl methacrylate and tert-butyl methacrylate; d. the auxiliary agent comprises F-554 and/or KBM-503M; e. the solvent includes PGMEA and/or PGDA.
  10. 10. A color filter, comprising the colored photosensitive resin composition according to any one of claims 1 to 9 as a raw material.

Description

Colored photosensitive resin composition and color filter Technical Field The application relates to the technical field of liquid crystal display, in particular to a coloring photosensitive resin composition and a color filter. Background In the manufacture of color filters for liquid crystal displays, conventional pigment-based systems have reduced display quality due to light scattering problems, and thus dye-based and pigment-dye mixed systems have been introduced to improve optical performance. However, when the dye is used as a colorant, the molecular structure of the dye is easy to excite strong fluorescence under illumination, and especially in a full black state, the phenomenon can obviously improve the background brightness, so that the contrast ratio of the optical filter is weakened, and finally the visual effect of the display is damaged. As display technology moves toward higher resolution, the demand for higher concentrations in color filters is increasing, which requires that the colorant content in the color composition must be increased. However, the increase in the concentration of the colorant causes a chain reaction that the sensitivity of the composition decreases to decrease the exposure efficiency, and the deterioration of the solubility in the developing process directly affects the formation quality of the pixel contour. Specifically, the material in the non-contour line region is difficult to dissolve sufficiently, and often adheres to the substrate surface as undissolved residues or flaked matter, and further causes defects such as color shift. Such problems not only cause the optical quality degradation of the color filter, but also obviously reduce the yield in the production process, and increase the manufacturing cost and the technical difficulty. In view of the above, there is a need in the art for improvements. Disclosure of Invention The application aims to provide a coloring photosensitive resin composition and a color filter, which are used for solving the problems. In order to achieve the above purpose, the application adopts the following technical scheme: The application provides a coloring photosensitive resin composition, which comprises, by taking the total mass of the coloring photosensitive resin composition as 100%, 40-60% of a coloring agent, 2.5-4.5% of an alkali-soluble resin, 2-3.5% of an acrylic ester monomer, 0.05-0.1% of a photopolymerization initiator, 0.02-0.03% of an auxiliary agent and 35-52% of a solvent; Wherein the colorant comprises 8.3-9.8% of aluminum phthalocyanine Dye, 17.7-18.5% of Y150 and 26-28.3% of G-Dye calculated by taking the total mass of raw materials as 100%. Optionally, the aluminum phthalocyanine dye has a chemical formula: ; Wherein A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4 each independently comprises one or more of F, cl and Br. Optionally, the preparation method of the aluminum phthalocyanine dye comprises the following steps: Mixing phthalonitrile, anhydrous aluminum chloride, 1, 8-diazabicyclo [5.4.0] undec-7-ene and n-amyl alcohol to obtain first slurry, heating and refluxing the first slurry, then cooling the first slurry, mixing the first slurry heated and refluxed with methanol and water to obtain green slurry, and sequentially drying, crushing, dispersing and dissolving the green slurry to obtain the aluminum phthalocyanine dye. Optionally, the mass ratio of the phthalonitrile to the anhydrous aluminum chloride to the 1, 8-diazabicyclo [5.4.0] undec-7-ene to the n-amyl alcohol is 2.5-3:1:15:2.5-3. Optionally, the temperature of the heating reflux is 133-138 ℃ and the time is 4.9-5.1h. Optionally, the end temperature of the first cooling is 28-32 ℃. Optionally, after the comminuting, the particles have a size of no more than 0.2 μm. Optionally, the dispersing and dissolving comprises mixing the green slurry once subjected to the drying and the crushing with a dispersing agent and propylene glycol methyl ether. Wherein the dispersant comprises a methacrylate. Optionally, the preparation method of the G-Dye comprises the following steps: Mixing tetrafluoro phthalonitrile, potassium carbonate and acetonitrile to obtain a first solution, performing second cooling, and stirring with phenyl parahydroxybenzoate and acetonitrile to obtain an intermediate; And mixing the intermediate with zinc chloride and benzyl cyanide, reacting, washing, separating solid from liquid, and drying to obtain the G-Dye. Optionally, the mass ratio of the tetrafluoro phthalonitrile to the potassium carbonate to the acetonitrile is 1.5-1.8:0.5:24-25. Optionally, the end temperature of the second cooling is 2 ℃. Optionally, the stirring time is 7.8-8.3h. Optionally, the mass ratio of the intermediate to the zinc chloride to the benzyl cyanide is 0.7:0.15-0.2:0.5, the reaction temperature is 160-180 ℃ and the reaction time is 4.9-5.2h. Alternatively, the alkali-soluble resin has a molecular weight of 10000-50000 and an acid value of