Nitrogen Cyclic Compound Color Conversion Film for Display Backlight
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Solution Overview
Problem
Existing light emitting diodes (LEDs) face challenges in controlling color rendition, leading to a deteriorated color gamut, and quantum dot-based solutions suffer from safety concerns, low efficiency, instability against oxygen and water, and high production costs.
Innovation Solution
A cyclic compound containing nitrogen, represented by Chemical Formula 1, is used in a color conversion film, dispersed in a resin matrix, to enhance fluorescence efficiency and light fastness, achieving improved color gamut and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dots are used to produce green and red colors, then color gamut can be improved, but safety problems arise due to cadmium-based quantum dots and production costs increase
Solution Approach 1:
The patent replaces expensive and hazardous quantum dots with organic fluorescent compounds that are safer, cheaper to produce, and can be synthesized through straightforward chemical reactions. These organic compounds achieve comparable color conversion performance without the safety and cost issues of quantum dots.
2Illumination intensity
If quantum dots are used to produce green and red colors, then color gamut can be improved, but production costs increase due to difficulty in constantly maintaining size
Solution Approach 1:
The patent employs organic fluorescent compounds that can be synthesized through conventional chemical methods with precise control over molecular structure and properties. This approach eliminates the need for complex quantum dot size control processes, significantly reducing manufacturing costs while maintaining color accuracy.
3Ease of manufacture
If existing LED methods are used to mix phosphors, then production is simple, but color control is difficult and color rendition deteriorates
Solution Approach 1:
The patent utilizes organic fluorescent compounds where the emission wavelength can be precisely tuned by modifying molecular structure parameters such as substituent groups on the boron-dipyrromethene core. This allows independent optimization of color properties while maintaining straightforward film fabrication processes.
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 emits green light with high fluorescence efficiency in the short wavelength region, providing excellent brightness and color gamut while maintaining light fastness, thus overcoming the limitations of traditional LED technologies and quantum dot-based solutions.
Implementation Method 1
a compound represented by Chemical Formula 1, which emits green light with high fluorescence efficiency
Data Source
AI summary
The present specification relates to a cyclic compound containing nitrogen, and a color conversion film, a backlight unit, and a display apparatus, including the same.