Color Conversion Composition with Alicyclic Resin
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Solution Overview
Problem
Existing color conversion compositions for displays and lighting devices fail to enhance both color reproducibility and durability, with organic luminescent materials exhibiting limited durability and insufficient color purity when used in light-emitting bodies, lighting devices, and liquid crystal displays.
Innovation Solution
A color conversion composition comprising an organic luminescent material with a full width at half maximum of 10-50 nm and a resin with an alicyclic structure, where the resin has a cycloolefin structure and a glass transition temperature between 80°C and 130°C, along with a tertiary amine, catechol derivative, or nickel compound, to achieve enhanced color reproducibility and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the peak wavelength of emission spectrum is shifted to enhance color purity, then color reproducibility is improved, but durability is insufficient
Solution Approach 1:
The patent uses a composite material system consisting of organic luminescent material dispersed in a resin matrix. The resin serves as a protective medium that enhances durability while the organic luminescent material provides color conversion functionality. This composite structure allows both color reproducibility and durability to be achieved simultaneously.
Solution Approach 2:
The patent controls the peak wavelength and full width at half maximum parameters of the organic luminescent material to optimize color purity. By carefully selecting and adjusting these parameters, the invention achieves enhanced color reproducibility while maintaining durability through the protective resin environment.
2Measurement precision
If organic luminescent materials are used for color conversion, then color reproducibility can be enhanced, but durability is not sufficient for light-emitting bodies and displays
Solution Approach 1:
The resin acts as an intermediary medium between the organic luminescent material and the external environment. It protects the luminescent material from degradation factors such as oxygen, moisture, and mechanical stress, thereby enhancing durability while allowing the material to maintain its color conversion properties.
Solution Approach 2:
The combination of organic luminescent material and resin creates a composite structure where the resin provides mechanical protection and environmental stability, enabling the luminescent material to function reliably for extended periods in practical applications.
3Adaptability or versatility
If blue light emission is converted to green or red light emission, then white light can be obtained from blue light source, but color purity and color gamut are insufficient
Solution Approach 1:
The patent employs different organic luminescent materials with specific peak wavelengths and narrow full width at half maximum values for different color conversion purposes. By selecting materials with optimized local spectral properties, the invention achieves high color purity in both green and red emission regions while maintaining the ability to generate white light.
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 color reproducibility and durability, enabling the creation of light-emitting bodies, lighting devices, and displays with enhanced color purity and longevity by effectively converting incident light into longer wavelengths, producing vivid colors with a larger color gamut.
Implementation Method 1
an organic luminescent material (A) having a full width at half maximum of a peak of 10 nm or larger and 50 nm or smaller, the peak indicating a maximum radiant intensity in an emission spectrum
Data Source
AI summary
A color conversion composition is configured to convert incident light into light having a wavelength longer than that of the incident light. The color conversion composition includes: an organic luminescent material (A) having a full width at half maximum of a peak of 10 nm or larger and 50 nm or smaller, the peak indicating a maximum radiant intensity in an emission spectrum; and a resin (B) having an alicyclic structure, a ratio of a repeating unit having the alicyclic structure in the resin being 50% by weight or higher in a total amount of the resin.