Nanoparticle Color Filter Composition for Heat- and Light-Stable Sensors
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Solution Overview
Problem
Existing coloring compositions for image sensor color filters suffer from poor light resistance and heat resistance, necessitating improved photostability and heat stability.
Innovation Solution
A coloring composition for color filters comprising nanoparticles, such as titanium dioxide, with a colorant adsorbed on their surface, including compounds like perylene, diketopyrrolopyrrole, or azo compounds with carboxyl groups, enhancing photostability and heat stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coloring compositions are used in color filters, then manufacturing is simple, but photostability and heat stability are poor
Solution Approach 1:
The patent uses composite materials by combining colorants with nanoparticles (such as metal oxides or non-metal oxides) to create a coloring composition that achieves both improved photostability and heat stability while maintaining manufacturing feasibility. The composite structure allows the colorant to be supported by the nanoparticle, enhancing reliability without excessive complexity
Solution Approach 2:
The patent changes the chemical and physical parameters of the coloring composition by selecting specific colorant molecules with particular functional groups (such as carboxyl groups) that can interact with nanoparticle surfaces. This parameter optimization improves photostability and heat stability while keeping the composition manageable
2Reliability
If colorant is adsorbed on nanoparticle surface, then photostability and heat stability improve, but transmittance control becomes more difficult
Solution Approach 1:
The patent applies local quality by controlling the adsorption of colorant molecules at specific locations on the nanoparticle surface. By optimizing the distribution and orientation of colorant molecules locally on the nanoparticle surface, the patent achieves improved stability while maintaining precise control over the overall transmittance properties of the coloring composition
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 high transmittance and improved reliability, maintaining stability under heat and light conditions, ensuring effective optical properties and reduced light scattering.
Implementation Method 1
a colorant adsorbed on the surface of the nanoparticle
Data Source
AI summary
A coloring composition for a color filter, a method of manufacturing the same, and a color filter for an image sensor manufactured using the coloring composition for a color filter are provided. The coloring composition includes a coloring composite including: a nanoparticle including a metal oxide or a non-metal oxide; and a colorant adsorbed on a surface of the nanoparticle, wherein the colorant includes one selected from a perylene compound including a carboxyl group (—COOH) at the para position of a benzene ring, a diketopyrrolopyrrole compound including a carboxyl group (—COOH) at the para position of a benzene ring, and an azo compound including a carboxyl group (—COOH) at the para position of a benzene ring.