Core-Shell Dye Resin Composition for Durable CMOS Color Filters
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Solution Overview
Problem
Existing pigment-based photosensitive resin compositions for color filters in liquid crystal displays and CMOS image sensors face limitations in luminance, contrast ratio, and durability due to the size of pigment particles, and dyes used for improved performance suffer from inferior light and heat resistance.
Innovation Solution
A core-shell dye comprising a core represented by Chemical Formula 1 or 2 and a shell surrounding it, with specific structural and compositional characteristics, is incorporated into a photosensitive resin composition, enhancing molar extinction coefficient and reducing fluorescence quantum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pigment particles are used in photosensitive resin composition, then manufacturing process is simple, but luminance and contrast ratio are limited due to particle size
Solution Approach 1:
The invention extracts the problematic particle size issue by transitioning from pigment particles to molecular-level dye compounds. The dye molecules are incorporated into the photosensitive resin at the molecular level, eliminating the particle size limitation that constrains luminance and contrast ratio performance in conventional pigment-based systems.
Solution Approach 2:
The invention changes the fundamental parameter of the colorant from particulate (pigment) to molecular (dye). This parameter change enables the color filter to achieve superior luminance and contrast ratio by utilizing the molecular-scale interaction between dye molecules and the photosensitive resin, rather than relying on light scattering from particles.
2Illumination intensity
If dye is used instead of pigment to reduce particle size, then luminance and contrast ratio improve, but light resistance and heat resistance deteriorate
Solution Approach 1:
The invention creates a composite system where the dye molecule is integrated with the photosensitive resin matrix through chemical bonding. This composite structure combines the high optical performance of dyes with the durability of the resin matrix, achieving both improved luminance/contrast ratio and maintained light resistance through the synergistic interaction between dye and resin.
Solution Approach 2:
The photosensitive resin acts as an intermediary that bridges the dye molecules to the substrate and provides a protective matrix. The resin matrix absorbs excess energy and dissipates heat, protecting the dye molecules from direct photodegradation while maintaining the optical benefits of the dye-based colorant.
3Manufacturing precision
If dye is used to achieve fine pattern for image sensor, then pattern size reduces to 2 μm or less, but durability and chemical resistance deteriorate
Solution Approach 1:
The invention applies local quality by ensuring that the dye molecules are specifically positioned and bonded within the photosensitive resin matrix at the desired pattern locations. The chemical bonding creates localized durable structures that maintain chemical resistance even at the reduced pattern sizes required for image sensors, rather than relying on physical particle placement.
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 improves luminance, contrast ratio, and chemical resistance of color filters and CMOS image sensors, offering improved dye coloring strength and durability.
Implementation Method 1
high light absorption efficiency
Implementation Method 2
low fluorescence quantum efficiency
Data Source
AI summary
Provided are a core-shell dye that includes a core including a compound represented by a specific chemical formula and a shell surrounding the core, a photosensitive resin composition including the same, a photosensitive resin film manufactured using the photosensitive resin composition, a color filter including the photosensitive resin film, and a CMOS image sensor including the color filter.