Curable Composition for Liquid Crystal Adhesion
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Solution Overview
Problem
Existing curable compositions for photolithographic and resin elution applications lack sufficient photolithographic and resin elution properties, necessitating a formulation that balances heat resistance, water resistance, and photolithographic performance.
Innovation Solution
A curable composition comprising water-soluble polyfunctional (meth)acrylates and (meth)acrylamides, combined with a photosensitive group-containing water-soluble polymer, which is cured using active energy rays to achieve enhanced photolithographic and resin elution properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-soluble polyfunctional (meth)acrylate and water-soluble polymer are used in existing curable compositions, then the composition can be formulated with water-soluble components, but the photolithographic properties and resin elution properties become insufficient
Solution Approach 1:
The patent changes the molecular weight parameter of the water-soluble polymer to 10,000-200,000 and controls the carboxyl group content at 0.1-10 mmol/g to achieve optimal balance between water solubility, photolithographic properties, and resin elution properties
Solution Approach 2:
The patent creates a composite curable composition combining water-soluble polyfunctional (meth)acrylate with specific water-soluble polymers (polyvinyl alcohol, carboxymethyl cellulose, or starch derivatives) to achieve synergistic effects that improve both photolithographic and resin elution properties while maintaining water solubility
2Reliability
If heat resistance and water resistance are enhanced in curable compositions, then durability is improved, but photolithographic properties deteriorate
Solution Approach 1:
The patent applies local quality by using polyfunctional (meth)acrylates with specific functional groups (hydroxyl, carboxyl, or amine groups) that provide localized reactivity zones, enabling simultaneous achievement of heat resistance, water resistance, and photolithographic properties through targeted molecular design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition exhibits excellent heat resistance, water resistance, and anti-liquid-crystal contamination properties, making it suitable for use in flat panel displays as an adhesive for liquid crystal applications.
Implementation Method 1
a curable composition comprising water-soluble polyfunctional (meth)acrylates and (meth)acrylamides, combined with a photosensitive group-containing water-soluble polymer, which is cured using active energy rays
Data Source
AI summary
Provided are: a curable composition having excellent photolithographic properties and resin elution properties; a cured product of the curable composition; and a curing method of the curable composition. The curable composition is characterized by including: (A) at least one selected from the group consisting of a water-soluble polyfunctional (meth)acrylates and water-soluble polyfunctional (meth)acrylamides; and (B) a photosensitive group-containing water-soluble polymer. The water-soluble polyfunctional (meth)acrylates are preferably compounds represented by Formula (I) below, and the water-soluble polyfunctional (meth)acrylamides are preferably compounds represented by Formula (II) below. In Formulae (I) and (II), R1 represents a hydrogen atom, a methyl group, or a halogen atom; X1 represents an alkylene group having 1 to 6 carbon atoms that is optionally substituted with a hydroxy group; A represents an n-valent organic group; R11 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; m represents a number of 1 to 30; n represents a number of 2 to 12; and t represents a number of 2 to 12.