Colored photosensitive resin composition, color filter and display device having the same

A technology of photosensitive resin and composition, applied in the direction of photosensitive materials, instruments, optics, etc. for opto-mechanical equipment, can solve problems such as poor orientation, difficulty, and poor voltage retention rate, and achieve excellent characteristics, voltage retention rate and Excellent brightness

Active Publication Date: 2018-07-27
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are difficulties in maintaining the voltage retention ratio above a certain level while maintaining such high brightness and high colorability
Specifically, when a halogenated copper phthalocyanine pigment such as C.I. Pigment Green 36 or C.I. Pigment Green 7 is used as the green main pigment of one of the three primary colors (red, green, blue; RGB) of the color filter substrate, Difficulty balancing high contrast and high brightness
In addition, in order to solve these problems, when the halogenated zinc phthalocyanine pigment is used, the voltage retention rate is only 90% or less, and improvement is required
[0006] In addition, in order to solve such a problem of poor voltage retention, a method of adding an epoxy group-containing compound or the like is known (Patent Document 1), but there are limitations in that problems such as display unevenness and poor orientation due to the type of pigment occur.

Method used

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  • Colored photosensitive resin composition, color filter and display device having the same
  • Colored photosensitive resin composition, color filter and display device having the same
  • Colored photosensitive resin composition, color filter and display device having the same

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0117] Synthesis example 1. Synthesis of alkali-soluble resin (B-1)

[0118] 120 parts by weight of propylene glycol monomethyl ether acetate, 80 parts by weight of propylene glycol monomethyl ether, azobisisobutyronitrile (Azobisisobutyronitrile, AIBN) 2 parts by weight, 13 parts by weight of acrylic acid, 10 parts by weight of benzyl methacrylate, 57 parts by weight of 4-methylstyrene, 20 parts by weight of methyl methacrylate, 3 parts by weight of n-dodecyl mercaptan parts by weight, and carry out nitrogen replacement. Thereafter, the temperature of the reaction solution was raised to 110° C. while stirring, and the reaction was carried out for 6 hours. The acid value of the solid content of the alkali-soluble resin synthesized in this way was 100.2 mgKOH / g, and the weight average molecular weight Mw measured by GPC was about 15,110.

manufacture example

[0119] Manufacture of pigment dispersion composition

[0120]

[0121] Using a bead mill, 12.0 parts by weight of C.I. Pigment Green 62 as a pigment, 4 parts by weight of LPN-6919 (manufactured by BYK) as a pigment dispersant, and 84 parts by weight of propylene glycol methyl ether acetate as a solvent Each part was mixed / dispersed for 12 hours to prepare a pigment dispersion liquid M1.

[0122]

[0123] Using a bead mill, 12 parts by weight of C.I. Pigment Green 63 as a pigment, 4 parts by weight of LPN-6919 (manufactured by BYK) as a pigment dispersant, and 84 parts by weight of propylene glycol methyl ether acetate as a solvent were mixed / Dispersion was carried out for 12 hours to prepare a pigment dispersion liquid M2.

[0124]

[0125] Using a bead mill, 12 parts by weight of C.I. Pigment Green 7 as a pigment, 4 parts by weight of LPN-6919 (manufactured by BYK) as a pigment dispersant, and 84 parts by weight of propylene glycol methyl ether acetate as a solvent w...

Embodiment 1

[0132] 15.43 parts by weight of the above , 12.50 parts by weight of , 12.47 parts by weight of the resin of , 4.64 parts by weight of KAYARAD DPHA (manufactured by Nippon Kayaku), 1.40 parts by weight of OXE-02 (manufactured by BASF Corporation) and 53.56 parts by weight of propylene glycol monomethyl ether acetate were mixed to prepare a colored photosensitive resin composition.

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Abstract

The invention provides a colored photosensitive resin composition, a color filter and a display device having the same. The colored photosensitive resin composition is characterized by comprising a coloring agent, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent. The above coloring agent comprises more than one pigment selected from C. I. Pigment Green 62 and C. I. Pigment Green 63; the photopolymerization initiator contains an oxime ester photopolymerization initiator.

Description

technical field [0001] The present invention relates to a colored photosensitive resin composition, a color filter formed from the composition, and a display device including the same. Background technique [0002] Color filters are widely used in various display devices such as imaging elements and liquid crystal displays (LCDs), and the range of applications thereof is rapidly expanding. The color filters used in the above-mentioned imaging elements, liquid crystal display devices, etc. are formed of coloring patterns of three colors of red (Red), green (Green) and blue (Blue), or are formed of yellow (Yellow), magenta (Magenta ) and cyan (Cyan) coloring patterns of three colors are formed. [0003] Each colored pattern of the above-mentioned color filter is generally formed using a colored photosensitive resin composition containing a colorant such as a pigment or a dye, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/027C08F212/12C08F220/06C08F220/14C08F220/18G02B5/22G02F1/1335
CPCG02F1/133514G03F7/027G02B5/223C08F212/12C08F220/06C08F220/14C08F220/1807G03F7/105G03F7/031G03F7/004G03F7/0007G02B5/20
Inventor 池仁爱金奉奎安大熙
Owner DONGWOO FINE CHEM CO LTD
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