Photosensitive resin composition, cushion for display panel and display panel

A technology of photosensitive resin and liquid crystal display panel, which is applied in the field of photosensitive resin composition, and can solve problems such as difficulty in obtaining spacer shape and film thickness

Inactive Publication Date: 2007-02-21
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for existing materials, at 1,500J / m 2 It is difficult to obtain sufficient spacer shape and film thickness at the exposure amount below
[0010] In addition, the requirements for the controllability of the shape and film thickness of the spacer have become increasingly strict in recent years, and there are still fluctuations in resolution due to process changes in forming the spacer, viscosity of the composition solution that changes with time, and film thickness. Thick Stability Related Issues

Method used

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  • Photosensitive resin composition, cushion for display panel and display panel
  • Photosensitive resin composition, cushion for display panel and display panel
  • Photosensitive resin composition, cushion for display panel and display panel

Examples

Experimental program
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Embodiment

[0165] Examples and comparative examples are shown below to explain the present invention more specifically, but the present invention is not limited to these examples.

Synthetic example 1

[0167] In a flask equipped with a cooling tube and a stirrer, 7 parts by weight of 2,2'-azobis(2,4-dimethylvaleronitrile) and 200 parts by weight of propylene glycol monomethyl ether acetate were added. Then add 20 parts by weight of styrene, 16 parts by weight of methacrylic acid, and 18 parts by weight of methacrylic acid tricyclic [5.2.1.0 2，6] Decane-8-yl ester and 40 parts by weight of 3-(methacryloyloxymethyl)-3-ethyloxetane were replaced with nitrogen, and then slowly stirred. The temperature of the solution was raised to 70°C, and the temperature was maintained for 5 hours to obtain a polymer solution containing copolymer [A-1]. The solid content concentration of the obtained polymer solution was 33.0% by weight, and the weight average molecular weight of the polymer was 24,000 (the weight average molecular weight was measured using GPC (gel permeation chromatography) HLC-8020 (manufactured by Toray)), and polystyrene was used. Molecular weight converted to ethylene).

Synthetic example 2

[0169] In a flask equipped with a cooling tube and a stirrer, 7 parts by weight of 2,2'-azobis(2,4-dimethylvaleronitrile) and 200 parts by weight of propylene glycol monomethyl ether acetate were added. Then add 20 parts by weight of styrene, 16 parts by weight of methacrylic acid, and 18 parts by weight of methacrylic acid tricyclic [5.2.1.0 2，6 ] Decane-8-yl ester and 40 parts by weight of 3-(methacryloxymethyl)-2-trifluoromethyloxetane were replaced with nitrogen, and then slowly stirred. The temperature of the solution was raised to 70°C, and the temperature was maintained for 5 hours to obtain a polymer solution containing a copolymer [A-2]. The solid content concentration of the obtained polymer solution was 33.0% by weight, and the weight average molecular weight of the polymer was 23,200 (the weight average molecular weight was measured using GPC (gel permeation chromatography) HLC-8020 (manufactured by Toray)), and polystyrene was used. Molecular weight converted to ethyl...

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Abstract

The invention provides a photosensitive resin composition having a satisfactory process margin, capable of giving a satisfactory spacer shape and thickness with an exposure energy of 1,500J/m<2>, and capable of forming spacers for a display panel excellent in adhesion, rubbing resistance and heat resistance and excellent also in spacer shape and long-term stability. The photosensitive resin composition contains a copolymer of an unsaturated carboxylic acid and/or an unsaturated carboxylic acid anhydride, a specific monomer having an oxetanyl group, a polymerizable compound having an ethylenically unsaturated bond, and a photopolymerization initiator containing a specific o-acyloxime type carbazole compound as an essential component.

Description

Technical field [0001] The present invention relates to a photosensitive resin composition, a spacer for a display panel, and a display panel. In more detail, the present invention relates to a photosensitive resin composition suitable for use as a material for forming spacers used in display panels such as liquid crystal display panels and touch screen panels, and spacers for display panels formed from the composition And a display panel provided with the spacer. Background technique [0002] Hitherto, in liquid crystal display panels, in order to keep the space between two substrates, that is, the cell gap constant, spacer particles such as glass beads and plastic beads having a predetermined particle diameter are generally used. These spacer particles are randomly scattered on transparent substrates such as glass substrates. Therefore, if there are spacer particles in the pixel formation area, the ingestion of the spacer particles (write り込み) will occur, which is affected by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/027G02F1/1339G03F7/16G03F7/20G03F7/26
Inventor 一户大吾志保浩司
Owner JSR CORPORATIOON
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