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Red colored photosensitive resin composition and color filter comprising the same

A technology of photosensitive resin and composition, which is applied in optical filters, photosensitive materials for optomechanical equipment, optics, etc., and can solve the problems of reduced pattern linearity, reduced curing degree of colored photosensitive resin composition, poor processability, etc. problems, and achieve the effects of improved heat resistance and chemical resistance, and excellent color reproducibility

Pending Publication Date: 2019-09-17
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the concentration of the colorant is increased as described above, the degree of curing of the colored photosensitive resin composition decreases, so pattern linearity decreases and pattern sinking occurs
In addition, when a colored photosensitive resin composition is used to form a pattern for an image sensor, there are problems of poor processability such as an inverted taper phenomenon in which the lower area of ​​the formed pattern is smaller than its upper area

Method used

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  • Red colored photosensitive resin composition and color filter comprising the same
  • Red colored photosensitive resin composition and color filter comprising the same
  • Red colored photosensitive resin composition and color filter comprising the same

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0137] Preparation Example 1: Synthesis of Red Pigment Liquid Composition (A-1)

[0138] Pigment dispersion solution containing 40 parts by weight of C.I. Pigment Red 254 as a pigment, 24 parts by weight of BYK2001 (DISPER BYK: purchased from BYK, solid content: 46 % by weight) as a dispersant and 136 parts by weight of propylene glycol methyl ether acetate as a solvent.

preparation Embodiment 2

[0139] Preparation Example 2: Synthesis of Red Pigment Liquid Composition (A-2)

[0140] A pigment dispersion solution containing 40 parts by weight of brominated diketopyrrolopyrrole ( Red S 3620CF, available from BASF) as a pigment, 24 parts by weight of BYK2001 (DISPER BYK: available from BYK, solid content: 46% by weight) as a dispersant and 136 parts by weight of propylene glycol methyl ether acetate as a solvent.

preparation Embodiment 3

[0141] Preparation Example 3: Synthesis of Red Pigment Liquid Composition (A-3)

[0142] Pigment dispersion solution containing 40 parts by weight of C.I. Pigment Red 177 as a pigment, 24 parts by weight of BYK2001 (DISPER BYK: purchased from BYK, solid content: 46 % by weight) as a dispersant and 136 parts by weight of propylene glycol methyl ether acetate as a solvent.

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Abstract

The invention relates to a red colored photosensitive resin composition and a color filter comprising the same. The red colored photosensitive resin composition comprises a red coloring agent, an alkali-soluble resin, a photo-polymerizable polymer, a photo initiator, and a solvent. The red coloring agent comprises a red pigment and a red dye. The red dye (magenta dye) has a maximal absorption wavelength of 500 nm to 600 nm in a visible light range in methanol and has solubility of 5% or less in Propylene Glycol 1-Monomethyl Ether 2-Acetate (PGMEA). The photo initiator is based on oxime and can generate free methyl radials after light irradiation. The composition has light (380-450 nm) transmittance of 15% or more in an xyz chromaticity coordinate measured by a C2 light source, in the xyz chromaticity coordinate, the chromaticity coordinate (x,y) x:0.300 and y:0.600 is green, x:0.150 and y:0.060 is blue, and the red coordinate has an sRGB covering rate of 98% or more.

Description

technical field [0001] The present invention relates to a red photosensitive resin composition and a color filter containing the composition. Background technique [0002] Color filters are widely used in imaging devices, liquid crystal displays, etc., and the range of applications is rapidly expanding. [0003] Color filters for use in color liquid crystal displays or imaging devices are manufactured in such a way that for each color a series of processes is repeated, involving the use of colorants containing colorants corresponding to each of red, green, and blue The colored photosensitive resin composition of the black matrix pattern is uniformly spin-coated, heated and dried (hereinafter also referred to as "pre-baking") to form a coating film, and then the coating film is exposed and developed, and any Thermal curing (hereinafter also referred to as "post-baking") is optionally performed, thereby forming pixels corresponding to each color. [0004] Since image display...

Claims

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Application Information

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IPC IPC(8): G03F7/004G03F7/027G02B5/20
CPCG03F7/004G03F7/027G02B5/20G03F7/105G03F7/031G03F7/0007
Inventor 裴辰哲金奉奎柳廷昊
Owner DONGWOO FINE CHEM CO LTD