Curable Composition for Color Filter Deep Curing
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Solution Overview
Problem
Conventional color filter production methods face challenges in achieving deep curing properties and pattern shape quality due to limitations in resin reactivity and pigment dispersion.
Innovation Solution
A curable composition comprising a pigment, a resin with specific structural units represented by Formulas 1, 4, and 5, and a photopolymerization initiator, which enhances deep curing properties and pattern shape by improving reactivity and dispersibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional photosensitive compositions are used for color filter production, then the basic curing function is achieved, but deep curing properties and pattern shape quality are insufficient
Solution Approach 1:
The patent changes the chemical parameters of the resin by introducing specific structural units (Formula 1 with ester or amide linkages, Formula 4 with aromatic hydrocarbon groups, and Formula 5 with urethane or carbamate linkages). These parameter changes in resin structure improve both the reactivity for deep curing and the dispersibility for pattern shape quality, resolving the contradiction between curing depth and pattern precision.
Solution Approach 2:
The patent creates a composite resin system combining multiple structural units (Formulas 1, 4, and 5) within the same resin molecule. This composite structure integrates the benefits of different functional groups: the ester/amide linkages enhance reactivity, the aromatic groups improve dispersibility, and the urethane/carbamate linkages contribute to both properties, achieving simultaneous improvement in deep curing and pattern shape quality.
2Quantity of substance
If high pigment concentration is used to improve color filter performance, then color strength is enhanced, but reactivity and dispersibility deteriorate
Solution Approach 1:
The patent changes the resin structure parameters by incorporating aromatic hydrocarbon groups (Formula 4) that provide enhanced dispersibility through pi-pi interactions and hydrophobic effects. This structural modification allows the resin to maintain stable dispersion of high pigment concentrations, preventing aggregation and maintaining composition stability even when pigment content is increased for better color performance.
3Reliability
If resin reactivity is increased to improve deep curing, then curing depth is enhanced, but pattern shape quality may deteriorate
Solution Approach 1:
The patent applies local quality by creating resin structures with different functional regions: Formula 1 provides reactive ester/amide linkages for deep curing, while Formula 4 provides aromatic groups that enhance dispersibility and pattern definition. This localized functional distribution within the resin molecule allows different parts of the resin to contribute to different requirements, achieving both deep curing and pattern shape quality simultaneously.
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 achieves excellent deep curing properties and pattern shape quality, enabling efficient crosslinking reactions even at high pigment concentrations and improving adhesiveness and dispersion stability.
Implementation Method 1
a photopolymerization initiator
Data Source
AI summary
Provided are a curable composition including a pigment, a resin having a structural unit represented by Formula 1, and a photopolymerization initiator; as well as a cured product obtained by curing the curable composition, a color filter including the cured product, a method for producing the color filter, and a solid-state imaging element or an image display device, each of which including the color filter. R1 to R3 each independently represent a hydrogen atom or an alkyl group, X1 represents —COO—, —CONR—, or an arylene group, R4 represents a divalent linking group, L1 represents a group represented by Formula 2 or 3, R5 represents an (n+1)-valent linking group, X2 represents an oxygen atom or —NRA—, RA represents a hydrogen atom, an alkyl group, or an aryl group, and n represents an integer of 1 or more.