Multi-Primary Wide-Gamut Color Display for Lower Metameric Error
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Solution Overview
Problem
Existing color systems, particularly RGB-based displays, face limitations in color gamut and suffer from viewer metameric errors due to narrow emissive spectra, leading to increased power consumption and operational costs, and lack a comprehensive workflow for acquiring and generating additional color primary information outside of the display.
Innovation Solution
A multi-primary color system utilizing at least four primaries, including RGB with additional colors like cyan, magenta, and yellow, operates in the CIE Yxy color space, employing an image data converter with a digital interface to encode and decode image data, enabling conversion and display on viewing devices, and supports formats beyond ITU-R BT.2020 color gamut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional RGB color system is used, then device complexity is low, but color gamut is limited and metameric errors occur
Solution Approach 1:
The color system is segmented into multiple independent primary color channels (R, G, B, C, M, Y) instead of using a single integrated RGB system. Each primary color can be independently controlled and optimized, allowing the system to achieve wider color gamut while maintaining manageable complexity through modular architecture
Solution Approach 2:
The display system is designed to handle multiple color primaries (at least four, preferably six) within a single unified framework. The system can process and display colors across different gamuts (sRGB, DCI-P3, Rec. 2020, and beyond) using the same hardware infrastructure, making it universally adaptable to various color standards
2Reliability
If narrow emissive spectra are used, then power consumption is reduced, but metameric errors increase
Solution Approach 1:
The system changes the spectral parameters of the emissive materials to achieve broader spectra without proportionally increasing power consumption. By selecting specific phosphor materials and quantum dot structures that emit broader wavelength ranges, the system improves color accuracy and reduces metameric errors while maintaining reasonable energy efficiency
Solution Approach 2:
The patent employs composite phosphor materials and quantum dot structures that combine multiple emission characteristics in a single material system. These composite materials provide broader and more controllable emission spectra, improving color rendering accuracy without requiring separate light sources for each wavelength range, thus avoiding proportional increases in power consumption
3Adaptability or versatility
If additional color primaries are added, then color reproduction is enhanced, but infrastructure costs increase
Solution Approach 1:
The patent merges multiple primary color emission mechanisms into a single integrated display structure. By combining phosphor-based and quantum dot-based emission layers within the same display device, the system achieves six-primary color capability without requiring separate display modules for different color systems, thereby reducing overall infrastructure costs
Solution Approach 2:
The system recovers and utilizes wavelengths across the entire visible spectrum through carefully designed phosphor and quantum dot combinations. By capturing and converting a broader range of light wavelengths, the system maximizes the utility of input energy and reduces the need for additional high-cost infrastructure to generate colors that would otherwise require separate light sources
Data Source
AI summary
The present invention includes systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.