Color Mirror Substrate with Quantum Dot Wavelength Conversion
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Solution Overview
Problem
Display devices with color mirror properties face issues such as failure to display desired colors and reduced display quality due to the implementation of color mirror features in OLED or LCD devices.
Innovation Solution
A color mirror substrate is developed, comprising a transparent substrate with wavelength conversion patterns and mirror patterns, where the wavelength conversion patterns include quantum dots with a core, shell, and ligand, and electron transport patterns are interposed between the wavelength conversion and mirror patterns, enhancing the adhesive strength and allowing for desired color implementation through metal self-patterning processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If color mirror property is implemented in OLED or LCD display devices, then mirror effect is achieved, but display quality deteriorates and desired colors cannot be displayed
Solution Approach 1:
The substrate is divided into multiple regions with different mirror properties. First mirror patterns are formed with initial mirror properties, then wavelength conversion patterns are selectively formed on specific regions to create second mirror patterns with different color properties. This segmentation allows different areas to have different mirror effects without compromising overall display quality.
Solution Approach 2:
Different regions of the substrate are given different local properties through selective formation of wavelength conversion patterns. Regions with wavelength conversion patterns exhibit different mirror colors (e.g., gold, black) compared to regions without such patterns. This local differentiation enables desired color implementation while maintaining mirror effects, resolving the contradiction between ease of manufacture and manufacturing precision.
2Adaptability or versatility
If wavelength conversion patterns are added to achieve desired colors, then color display capability is improved, but device structure becomes more complex
Solution Approach 1:
The wavelength conversion patterns are merged with the existing mirror pattern structure. The wavelength conversion layers are formed directly on the substrate in regions where second mirror patterns are desired, integrating the color conversion function with the mirror structure rather than adding separate components. This merging approach enhances color display capability while minimizing structural complexity.
Solution Approach 2:
The wavelength conversion patterns serve multiple functions: they convert wavelengths to achieve desired mirror colors (gold, black, etc.) and simultaneously maintain the mirror reflective properties. This multi-functionality allows a single structural element to provide both color conversion and mirror effects, improving adaptability without proportionally increasing device complexity.
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 solution improves display quality by enabling the implementation of mirror properties with desired colors, such as gold or black mirrors, by using quantum dots, thereby enhancing the overall performance of color mirror display devices.
Implementation Method 1
Each wavelength conversion pattern may include a wavelength conversion particle. In example embodiments, the wavelength conversion particle may include a quantum dot.
Data Source
AI summary
A color mirror substrate may include a transparent substrate, a plurality of wavelength conversion patterns arranged on the transparent substrate, and a plurality of mirror patterns, ones of the mirror patterns stacked on respective ones of the wavelength conversion patterns. Each wavelength conversion pattern may include a wavelength conversion particle with a quantum dot. In the color mirror display device, a mirror property having a desired color may be implemented. For example, a gold mirror or a black mirror may be implemented by using various types of quantum dots.