Xanthene Compound Photosensitive Resin for Color Filter Luminance
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Solution Overview
Problem
Existing color filters manufactured using pigment-type photosensitive resin compositions face limitations in luminance and contrast ratio due to pigment particle size, and xanthene-based compounds exhibit low solubility and poor heat resistance in organic solvents.
Innovation Solution
A compound represented by Chemical Formula 1, with specific substituents, is used to form a photosensitive resin composition that includes an acrylic polymer, improving solubility and luminance, and a color filter is manufactured using this composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pigment-type photosensitive resin composition is used, then color filter can be manufactured, but luminance and contrast ratio are limited due to pigment particle size
Solution Approach 1:
The patent changes the chemical structure parameters of the xanthene compound by introducing specific substituents (R1-R4 groups including cycloalkyl, aryl, heteroaryl groups and ester functionalities) to improve solubility and eliminate the need for pigment particles, thereby enhancing luminance without particle size limitations
Solution Approach 2:
The patent creates a composite photosensitive resin composition by combining the modified xanthene compound with specific polymers and photopolymerization initiators, achieving both improved solubility and enhanced luminance performance while maintaining color filter functionality
2Quantity of substance
If xanthene-based compound is used, then colorant function is achieved, but solubility in organic solvents is low
Solution Approach 1:
The patent applies local quality modification by introducing specific functional groups (ester groups, cycloalkyl groups, aryl groups) at specific positions (R1-R4) of the xanthene core structure, enhancing solubility in organic solvents while maintaining the overall molecular stability and colorant function
Solution Approach 2:
The patent changes the physical-chemical parameters of the xanthene compound by modifying substituent groups to achieve optimal balance between solubility and stability, allowing the compound to dissolve well in organic solvents while maintaining reliability
3Temperature
If xanthene-based compound is used, then colorant function is achieved, but heat resistance is poor
Solution Approach 1:
The patent introduces thermally stable groups (cycloalkyl groups, aryl groups, heteroaryl groups) at specific positions of the xanthene structure, providing local thermal stability that enhances overall heat resistance while maintaining compound integrity
Solution Approach 2:
The patent combines the modified xanthene compound with thermally stable polymers and additives in the photosensitive resin composition, creating a composite system that maintains heat resistance while achieving improved solubility and luminance
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 compound enhances the solubility and performance of the photosensitive resin composition, resulting in a color filter with improved luminance and contrast ratio, and maintains heat resistance.
Implementation Method 1
The compound represented by Chemical Formula 1 may have maximum absorbance in a wavelength range of about 500 nm to about 600 nm
Implementation Method 2
a photopolymerizable compound
Data Source
AI summary
A compound, an acrylic polymer formed by a copolymerization reaction of the compound with an ethylenic unsaturated monomer, photosensitive resin composition including the compound being represented by Chemical Formula 1 and a color filter: