Triarylmethane Dye Coloring Curable Resin for Color Filter
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Solution Overview
Problem
Color filters using pigment dispersion systems face issues such as scattering due to coarse pigment particles and poor dispersion stability, leading to difficulties in improving contrast and brightness, especially in applications like liquid crystal display devices and image sensors.
Innovation Solution
A coloring curable resin composition incorporating a triarylmethane dye with a specific structure, along with a resin and a polymerization initiator, is used to form a cured film with enhanced heat resistance and durability, particularly suitable for blue filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a pigment dispersion system is used as a colorant, then the color filter can be manufactured with conventional methods, but scattering occurs due to coarse pigment particles and viscosity increases due to poor dispersion stability
Solution Approach 1:
The invention changes the fundamental parameter of the colorant from pigment (insoluble particles) to dye (soluble molecular form). This parameter change eliminates particle size issues and dispersion stability problems while maintaining manufacturability through conventional coating and curing processes.
Solution Approach 2:
The invention replaces the mechanical dispersion system (pigment particles physically dispersed in resin) with a molecular dissolution system (dye molecules dissolved in resin). This substitution eliminates the need for mechanical dispersion processes and eliminates scattering issues inherent in particle-based systems.
2Ease of manufacture
If a pigment dispersion system is used as a colorant, then the color filter can be manufactured with conventional methods, but contrast and brightness improvement becomes difficult
Solution Approach 1:
The invention changes the colorant from pigment to dye, fundamentally altering how color is achieved. Dyes provide superior color purity and saturation without the light scattering effects of pigment particles, thereby improving brightness and contrast while maintaining ease of manufacture through conventional processes.
3Ease of manufacture
If conventional coloring curable resin compositions are used, then the color filter can be produced, but heat resistance and durability in sputtering process are insufficient
Solution Approach 1:
The invention uses a composite resin system combining specific base resins (polyester, acrylic, or vinyl chloride) with the triarylmethane dye. This composite material formulation provides both the manufacturability of conventional resin systems and the superior heat resistance and sputtering durability required for modern display applications.
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 improved heat resistance and durability in sputtering processes, enhancing the color characteristics and performance of color filters in various display devices.
Implementation Method 1
a coloring curable resin composition comprising: a colorant represented by Formula (1), Formula (2), or Formula (3); a resin; a polymerizable compound; and a polymerization initiator
Data Source
AI summary
The present invention provides a colored curable resin composition that exhibits good heat resistance and durability in a sputtering process, a cured film, a color filter, a method for manufacturing a color filter, a solid-state image device, an image display device, a compound, and a cation. The colored curable resin composition contains a colorant represented by Formula (1), Formula (2), or Formula (3), a resin, a polymerizable compound, and a polymerization initiator. In Formula (1), R101 and R102 each independently represent a hydrogen atom or a substituent, R103 to R106 each independently represent a hydrogen atom, an alkyl group, an aryl group, or a heteroaryl group, R107 to R111 each independently represent a hydrogen atom or a substituent, n1 to n4 each independently represent an integer of 0 to 4, n5 represents an integer of 0 to 6, X represents an anion or is not present, and at least one of R101, . . . , or R111 includes an anion; and in the case where R101 and R102 represent hydrogen atoms, R103 represents an aryl group having a substituent at at least the ortho-position.