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Photosensitive resin composition and spacer for liquid crystal panel

A photosensitive resin and liquid crystal panel technology, applied in optics, optomechanical equipment, nonlinear optics, etc., can solve problems such as pattern peeling, difficult to maintain developing time, shorten developing time, etc.

Active Publication Date: 2012-05-30
TOKYO OHKA KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spacers are formed on various substrates in this way, but if the adhesion of the spacers to the substrate is insufficient, for example, the pattern may peel off during development.
[0008] So far, the problem of making up for the lack of adhesion has been solved by shortening the development time. However, if the development time is short, foreign matter due to poor development, or CD value fluctuations due to tailing (tailing) shape, etc. will occur. question
Especially when the size of the substrate becomes large, it is difficult to maintain the development time at a constant value in the substrate, so that it is difficult to cope with the problem by shortening the development time

Method used

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  • Photosensitive resin composition and spacer for liquid crystal panel
  • Photosensitive resin composition and spacer for liquid crystal panel
  • Photosensitive resin composition and spacer for liquid crystal panel

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0105] [Method for preparing photosensitive resin composition]

[0106] The photosensitive resin of the present invention can be prepared by mixing (dispersing, kneading) the above-mentioned components with a mixer such as a three-roll mill, a ball mill, or a sand mill, and filtering with a filter such as a 5 μm membrane filter (membrane filter) as needed. combination.

[0107] [Formation method of spacer for liquid crystal panel]

[0108] Hereinafter, the method of forming the spacer for liquid crystal panels using the photosensitive resin composition of this invention is demonstrated.

[0109] First, use a contact transfer coating device such as a roll coater, a reverse coater, or a bar coater, or a spin coater (Spinner, spin coater), or a curtain coater (Curtain coater). Flow Coater) and other non-contact coating devices, the photosensitive resin composition is coated on the substrate where spacers need to be formed, and dried to remove the solvent.

[0110] Next, active...

Embodiment 1

[0119] (A) Components use (A-1) resin (mass average molecular weight: 9000) and dipentaerythritol hexaacrylate (DPHA), the (A-1) resin represented by the following formula (a-1-1) The molar ratio of the structural unit (a1) to the structural unit (a2) represented by the following formula (a-2-1) was 40:60.

[0120] [Chemical formulas a-1-1 and a-2-1]

[0121]

[0122] (B) Ingredients (B-1) Ethanone-1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]-1-(o-acetyloxime ) (manufactured by Ciba Specialty Chemicals Inc., IRGACURE OXE02).

[0123] (C) As a component, (C-1) N-phenyl-γ-aminopropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBM573) was used.

[0124] As a surfactant, BYK310 manufactured by BYK-Chemie Japan was used.

[0125] The above components were mixed with an organic solvent, stirred with a stirrer for 2 hours, and then filtered with a 5 μm membrane filter to prepare a photosensitive resin composition. The blending amount of each component i...

Embodiment 2

[0127] A photosensitive resin composition was prepared in the same manner as in Example 1 except that (C-2) N,N-dimethyl-3-aminopropyltrimethoxysilane was used as (C) component and the organic solvent was changed.

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PUM

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Abstract

The present invention provides a photosensitive resin composition which can form a liquid crystal panel used spacer with high adhesiveness and a liquid crystal panel used space formed by the photosensitive resin composition. The photosensitive resin composition comprises the following components: (A) a photopolymerizable compound, (B) a photopolymerization initiating agent and (C) an adhesion fortifier, the invention is characterized in that the component (C) is a silicone hydride compound comprising nitrogen atom group, and the number of hydrogen atom linked with the nitrogen atom is below 1; and the photosensitive resin composition is suitable for forming the liquid crystal panel used spacer.

Description

technical field [0001] The present invention relates to a photosensitive resin composition and a spacer for a liquid crystal panel, more specifically to a photosensitive resin composition suitable for forming a spacer arranged between two substrates of a liquid crystal panel, and the A spacer for liquid crystal panels formed of a photosensitive resin composition. Background technique [0002] In the liquid crystal panel of the liquid crystal display device, a liquid crystal material is sandwiched between two transparent substrates such as glass substrates. Therefore, a spacer must be formed between the two substrates to be able to fill the liquid crystal material. [0003] Conventionally, to form spacers, a method of spreading spacer beads over the entire substrate has been used. However, this method has the problem that the beads adhere to the pixel display portion, resulting in degradation of image contrast and display quality. Therefore, various methods of forming the sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/075G03F7/004G02F1/1339
CPCG03F7/0751G03F7/085
Inventor 森尾公隆武内弘明前田将俊
Owner TOKYO OHKA KOGYO CO LTD