Active energy ray curable resin composition and spacer for display element and/or color filter protective film using same

A technology of active energy rays and curable resins, which is applied in the direction of optical filters, nonlinear optics, and photolithography on patterned surfaces, etc. It can solve the problem of poor elastic recovery rate and no record of spacers or color filters for display elements. Protective film and other problems, to achieve the effect of excellent toughness, excellent developability, high radiation sensitivity

Active Publication Date: 2019-12-17
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymer component, which is the main component of the composition, is excellent in developability and flexibility, but has the problem of poor elastic recovery required as a photo-spacer
[0009] Patent Document 4 discloses the use of a resin composition containing an epoxy carboxylate compound as an optical material, but there is no mention of using it for a spacer for a display element or a protective film for a color filter.

Method used

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  • Active energy ray curable resin composition and spacer for display element and/or color filter protective film using same
  • Active energy ray curable resin composition and spacer for display element and/or color filter protective film using same
  • Active energy ray curable resin composition and spacer for display element and/or color filter protective film using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1～1-3

[0158] [Preparation of reactive polycarboxylic acid compound (A)]

[0159] GTR-1800 (manufactured by Nippon Kayaku; epoxy equivalent 170g / eq) was added as epoxy resin (a) in the amount listed in Table 1, and acrylic acid (abbreviated as AA, Mw=72), and dimethylolpropionic acid (abbreviated as DMPA, Mw=134) was added as the compound (c) in the amount described in Table 1. 3 g of triphenylphosphine was added as a catalyst, and propylene glycol monomethyl ether monoacetate was added as a solvent so that the solid content would be 80% by weight of the reaction liquid. Reaction was carried out at 100° C. for 24 hours to obtain a reactive epoxy carboxylate compound (E) solution. The next reaction was performed with a solid content acid value (AV: mgKOH / g) of 5 or less as the reaction end point. In acid value measurement, it measures with a reaction solution, and converts it into the acid value by solid content.

[0160] Then, in the reactive epoxy carboxylate compound (E) solutio...

Embodiment 2-1

[0184] In the solution containing the reaction product obtained in the amount equivalent to 100 parts by weight (solid content) of Example 1-1 as a reactive polycarboxylic acid compound (A), add (B- 1) 100 parts by weight, 10 parts by weight of (C-1) as a photopolymerization initiator (C), and adding PGMEA and DEGDM as an organic solvent to obtain a desired solid content concentration, mixed as a surfactant (H) The composition (S-1) was prepared by filtering 0.3 parts by weight of (H-1) through a membrane filter with a pore diameter of 0.2 μm. It should be noted that the values ​​of the organic solvents in Table 2 are the mass ratios of PGMEA and DEGDM.

Embodiment 2-2～2-3 and comparative example 2-1～2-3

[0186] Except that the types and compounding amounts of each component were set as shown in Table 2, the same operation as in Example 2-1 was carried out to prepare samples of Examples 2-2 to 2-3 and Comparative Examples 2-1 to 2-3. combination. It should be noted that the values ​​of the organic solvents in Table 2 are the mass ratios of PGMEA and DEGDM.

[0187] Table 2

[0188]

[0189]

[0190] The following evaluations were performed about the compositions of Examples 2-1 to 2-3 and Comparative Examples 2-1 to 2-3, and spacers formed of coating films thereof. The evaluation results are summarized in Table 3.

[0191] (viscosity)

[0192] The viscosity (mPa·s) of each composition in 25 degreeC was measured using the E-type viscometer (Toki Sangyo Co., Ltd. make, TV-200).

[0193] (solid content concentration)

[0194] Accurately weigh 0.3 g of the composition in an aluminum dish, add about 1 g of diethylene glycol dimethyl ether, and then dry it on a hot plate at...

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Abstract

The present invention provides an active energy ray-curable resin composition capable of forming a spacer for a display element and a protective film for a color filter that are excellent in heat-resistant transparency, flatness, flexibility, and toughness, and a spacer for a display element and a protective film for a color filter. membrane. The resin composition of the present invention contains a reactive polyvalent carboxylic acid compound (A), a reactive compound (B) other than the compound (A), a photopolymerization initiator (C) and an organic solvent (D), and the compound (A ) By making at least the reaction product of epoxy resin (a) represented by the following general formula (1) and a compound (b) having one or more polymerizable ethylenically unsaturated groups and one or more carboxyl groups in one molecule with The polybasic acid anhydride (d) is further reacted and obtained. (where R 1 ~R 8 represents a hydrogen atom, etc., and G represents a glycidyl group. )

Description

technical field [0001] The present invention relates to an active energy ray curable resin composition, a spacer for a display element, and / or a color filter protective film. Background technique [0002] In materials for display devices, resin compositions containing a binder polymer, a photopolymerizable monomer, a photopolymerization initiator, and the like have been used. In recent years, as materials for display devices (materials for LCD, EL, PDP, FED (SED), rear-projection displays, electronic paper, or digital cameras, etc., especially display elements and materials around display elements), such as color liquid crystal Display devices (LCDs) are rapidly spreading. In general, a color liquid crystal display device adopts the following structure: a color filter is opposed to an electrode substrate such as a TFT substrate, and a gap of about 1 μm to about 10 μm is provided, a liquid crystal compound is filled in the gap, and a sealing material is used around it. seal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/027G02B5/20G02F1/1339
CPCG03F7/027G03F7/0388G02F1/133519G02F1/13398G02B5/20G03F7/0007G03F7/0048
Inventor 山本和义小渊香津美
Owner NIPPON KAYAKU CO LTD
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