Thermosetting film forming composition having photo-alignment property

一种光取向性、热固化的技术，应用在光学、滤光片、非线性光学等方向，能够解决不能获得取向性等问题，达到高耐溶剂性的效果

Active Publication Date: 2012-12-19
NISSAN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the conventional thermosetting or photocuring acrylic resins have appropriate transparency and solvent resistance, even if the outer coating formed of such acrylic resins is subjected to rubbing treatment or polarized UV irradiation, it cannot be obtained. full orientation

Method used

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  • Thermosetting film forming composition having photo-alignment property
  • Thermosetting film forming composition having photo-alignment property
  • Thermosetting film forming composition having photo-alignment property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 6 and comparative example 1～ comparative example 3

[0161] Each composition of Examples 1 to 6 and Comparative Examples 1 to 3 was prepared with the composition shown in Table 1, and solvent resistance, orientation, heat resistance, and transmittance were evaluated for each composition.

[0162] [Table 1]

[0163]

[0164] ※The (A) component in Comparative Example 2 is the number of g of the solution of P1

[0165] [Evaluation of solvent resistance]

[0166] After coating each composition of Example 1 to Example 6 and Comparative Example 1 to Comparative Example 3 on a silicon wafer using a spin coater, it was prebaked on a hot plate at a temperature of 80°C for 120 seconds to form a film Coating film with a thickness of 1.1 μm. The film thickness was measured using F20 manufactured by FILMETRICS. This coating film was post-baked on a hot plate at a temperature of 130° C. for 5 minutes to form a cured film with a film thickness of 1.0 μm.

[0167] After immersing this cured film in CHN or NMP for 60 seconds, it was dried...

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Abstract

Disclosed is a material that, after formation of a heat-cured film, exhibits high solvent resistance, superior photo-alignment capabilities for polymerizable liquid crystals, sufficient heat resistance and a high level of transparency. During heat-cured film formation, the material can also be dissolved in glycol solvents, ketone solvents or lactic acid ester solvents that can be used in color filter overcoat preparation. Specifically disclosed is a composition forming a heat-cured film having photo-alignment properties that contains a compound, which is component (A), having photo-alignment properties and a hydroxy group hydroxy group, melamine-formaldehyde resin, which is component (B), and a cross-linking agent, which is component (C).

Description

technical field [0001] The present invention relates to a composition for forming a thermally cured film having photo-alignment property, and a cured film formed from the composition. More specifically, the present invention relates to a composition for forming a thermosetting film having high transparency, liquid crystal orientation ability, high solvent resistance, and heat resistance among thermosetting films, and applications of the thermosetting film. The composition for forming a thermally cured film having photo-alignment property of the present invention is particularly suitable for a color filter overcoat agent for forming a built-in retardation layer in a liquid crystal display and having an alignment function of a polymerizable liquid crystal. Background technique [0002] In general, optical devices such as liquid crystal display elements, organic EL (electro luminescent) elements, and solid-state imaging elements are provided with a protective film to prevent th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/28G02B5/20G02B5/30G02F1/1337
CPCG02F2001/133519G02F1/133711G02F1/13363C08L61/28G02F1/133788C09K2323/02G02F1/133519C08L101/02G02B5/20G02F1/1337
Inventor 畑中真近藤光正
Owner NISSAN CHEM CORP
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