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Alignment film release agent composition and film stripping technology

A technology of alignment film and film release agent, which is applied in the field of electronic polymer film release chemicals, can solve the problems of large steric hindrance of polyimide, reduction of attack amide bonds, poor peeling effect of PI film, etc., and achieve the reduction of alkali metal Effect of hydroxide content

Active Publication Date: 2019-03-08
JIANGYIN JIANGHUA MICROELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optional range of alkali in CN1693439A in the embodiment includes sodium hydroxide, tetrabutylammonium hydroxide and tetraethylammonium hydroxide, and the defect of quaternary ammonium salt as the basic component of the release agent composition is that although basic Strong, but the N+ structure is surrounded by -CH3, its steric hindrance effect is large, and the structure of polyimide itself has a large steric hindrance, the probability of the quaternary ammonium salt basic functional group attacking the amide bond is greatly reduced, affecting the molecular reaction Activity, poor peeling effect on PI film after heat treatment

Method used

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  • Alignment film release agent composition and film stripping technology
  • Alignment film release agent composition and film stripping technology

Examples

Experimental program
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Effect test

Embodiment 1-8

[0037] The composition (by weight percentage) of the alignment film release agent composition of embodiment 1-8 sees the following table:

[0038]

[0039] In the above table, the ABC components are:

[0040] A represents an alkaline component, A1 is potassium hydroxide, A2 is sodium phosphate, A3 is hydrazine hydrate, A4 is tetramethylammonium hydroxide, and A5 is morpholine;

[0041] B represents an aprotic polar solvent, B1 is N-methylpyrrolidone, B2 is dimethylsulfoxide, and B3 is N,N-dimethylformamide;

[0042] C represents an organic alcohol solvent, C1 is ethylene glycol, and C2 is 1,2,4-butanetriol.

Embodiment 1

[0043] Adopt the aprotic polar solvent and the organic alcohol solvent of identical composition in embodiment 1-4, be convenient to form contrast, the basic component of embodiment 1 adopts potassium hydroxide and morpholine to form, the basic component of embodiment 2 Divided into independent morpholine, the basic component of embodiment 3 adopts hydrazine hydrate and morpholine to form, and the basic component of embodiment 4 adopts potassium hydroxide, tetramethyl ammonium hydroxide to change and form with morpholine become.

Embodiment 5

[0044] The alkaline component of Example 5 is formed by combining potassium hydroxide, sodium phosphate, tetramethylammonium hydroxide and morpholine.

[0045] The composition of the basic components in Examples 6-8 is the same, the difference lies in the composition of the aprotic polar solvent and the organic alcohol solvent.

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Abstract

The invention discloses an alignment film release agent composition. A main component is an alkaline component, an aprotic polar solvent, an organic alcohol solvent and water. The alkaline component contains morpholine and / or a morpholine derivative with a morpholine ring secondary amine group. The morpholine and / or the morpholine derivative with the secondary amine group is introduced in the alignment film release agent composition, and a morpholine molecular structure has the secondary amine group, so water solution thereof has strong basicity, an alkali metal hydroxide can be partially or completely substituted, content of the alkali metal hydroxide in the release agent composition is reduced, and a bottom layer ITO and a metal layer are not damaged. Water content in the alignment filmrelease agent composition is high, and it is helpful to improve a safety factor in an alignment film stripping process. The invention further discloses a film stripping technology of the alignment film release agent composition.

Description

technical field [0001] The invention relates to the technical field of electronic polymer release chemicals, in particular to an alignment film release agent composition and a release process. Background technique [0002] Alignment film, also known as liquid crystal alignment film layer, is made of insulating material polyimide, and its function is to provide a carrying platform for liquid crystal molecules to be arranged in an orderly manner. The PI film is a film layer with a specific pattern uniformly formed on the CF or TFT substrate. After rubbing, the PI film has a uniform orientation and pre-tilt angle. There are often abnormalities in the production process of CF or TFT substrates, and the process of removing and re-coating the PI film is usually required, that is, the PI-rework process. The traditional PI-rework process uses dry etching and uses He plasma and O2 plasma bombardment to etch the PI film, which is not only expensive, but also has high operational risk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/04C11D7/06C11D7/16C11D7/26C11D7/32C11D7/34C11D7/50C11D7/60G02F1/1337
CPCC11D7/04C11D7/06C11D7/16C11D7/261C11D7/3209C11D7/3263C11D7/3281C11D7/34C11D7/5009G02F1/133723
Inventor 徐杨邵勇朱龙陈林承明忠周勰殷福华赵文虎
Owner JIANGYIN JIANGHUA MICROELECTRONICS MATERIAL