Core-Shell Dye Photosensitive Resin for Color Filter Luminance
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Solution Overview
Problem
Conventional photosensitive resin compositions for color filters in liquid crystal display devices face limitations in achieving high luminance and contrast ratio due to the size of pigment particles, which affects the resolution and durability of the color filters, especially in image sensors where smaller pattern sizes and improved light resistance are required.
Innovation Solution
A compound represented by Chemical Formula 1, which forms a core-shell dye with a specific shell structure, is incorporated into a photosensitive resin composition, enhancing luminance and contrast ratio by improving durability and solubility, and is used in combination with a binder resin, photopolymerizable monomer, and photopolymerization initiator to create a color filter with improved spectral characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pigment particles are used in photosensitive resin composition, then durability and light resistance are improved, but luminance and contrast ratio are limited due to particle size
Solution Approach 1:
The patent changes the physical state of the colorant from particulate (pigment) to molecular (dye), fundamentally altering the parameter of particle size to near-zero dimensions. This enables the colorant to provide both high durability through chemical bonding with the resin and high luminance through uniform molecular distribution and optimal light absorption characteristics.
Solution Approach 2:
The patent creates a composite photosensitive resin composition integrating the dye molecule with binder resin, photopolymerizable monomer, and photopolymerization initiator. This composite structure ensures the dye is uniformly distributed and chemically bonded within the cured resin matrix, simultaneously achieving high durability, high luminance, and excellent pattern characteristics.
2Object-affected harmful factors
If pigment particles are used in photosensitive resin composition, then light resistance is improved, but pattern resolution and contrast ratio are limited
Solution Approach 1:
The patent transforms the colorant from particulate form with finite size to molecular form with negligible size, enabling pattern resolution at the limit of optical diffraction. The molecular-scale colorant can be uniformly distributed even in sub-micrometer patterns, achieving high contrast ratio and excellent pattern characteristics while maintaining light resistance through chemical bonding.
3Illumination intensity
If dye is used instead of pigment, then luminance and contrast ratio are improved, but durability and light resistance deteriorate
Solution Approach 1:
The patent uses photopolymerization as an intermediary process to chemically bond the dye molecule to the binder resin and photopolymerizable monomer. This chemical bonding mechanism serves as a mediator that anchors the dye molecules firmly within the cured resin matrix, preventing dye migration, fading, and degradation, thereby achieving high durability and light resistance while maintaining the high luminance benefits of molecular colorants.
Solution Approach 2:
The patent creates a composite photosensitive resin system where the dye is integrated with binder resin, photopolymerizable monomer, and photopolymerization initiator. The photopolymerization process forms a crosslinked network structure that chemically incorporates the dye molecules, creating a unified composite material with enhanced durability, light resistance, and optical performance simultaneously.
4Reliability
If conventional pigment-based photosensitive resin composition is used, then durability is maintained, but color coordinate retention and spectral characteristics are insufficient
Solution Approach 1:
The patent changes the colorant from particulate pigment to molecular dye, fundamentally altering the interaction mechanism with light. The molecular structure of the dye enables precise spectral characteristics and excellent color coordinate retention through uniform distribution and consistent light absorption, while chemical bonding with the resin matrix maintains durability.
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 core-shell dye composition achieves high luminance and contrast ratio while maintaining durability, as evidenced by increased thermal stability and improved color coordinate retention, outperforming conventional pigment-based compositions in both performance and longevity.
Implementation Method 1
a photopolymerization initiator, and a solvent
Implementation Method 2
enhancing luminance and contrast ratio by improving durability and solubility
Data Source
AI summary
A compound represented by a specific chemical formula, a core including the compound represented by the specific chemical formula, and a core-shell dye including a shell surrounding the core, a photosensitive resin composition including the compound represented by the specific chemical formula, and a color filter manufactured using the photosensitive resin composition are disclosed.