Mixed RGBW and RGBY Pixel Array for Chrominance Quality
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Solution Overview
Problem
Conventional RGBW displays suffer from dark yellow issues and lack improved chrominance quality, while RGBY displays offer better yellow color but at the cost of RGBW's benefits, and five-color displays are complex and costly to manufacture.
Innovation Solution
Incorporating both RGBY and RBGB pixels into the image device, with specific sub-pixel arrangements and ratios, to address the dark yellow problem and enhance chrominance quality while maintaining white balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If RGBW pixels are used, then brightness and contrast are improved, but chrominance quality deteriorates (dark yellow issue)
Solution Approach 1:
The patent combines RGBW pixels (for brightness) with RGBY pixels (for chrominance quality) in a mixed pixel array. This merging allows the display to simultaneously achieve high brightness from RGBW pixels and accurate color reproduction from RGBY pixels, resolving the contradiction between brightness enhancement and chrominance quality degradation.
2Manufacturing precision
If RGBY pixels are used, then chrominance quality is improved, but brightness and contrast benefits are lost
Solution Approach 1:
The patent merges RGBY pixels with RGBW pixels in a hybrid pixel arrangement. The RGBY pixels provide superior chrominance quality and yellow color accuracy, while the RGBW pixels contribute enhanced brightness and contrast. This combination allows the display to achieve both improved chrominance quality and maintained brightness performance.
3Manufacturing precision
If five color sub-pixels are added, then chrominance quality is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent combines two different four-color pixel types (RGBW and RGBY) rather than implementing a single five-color pixel type. This approach achieves improved chrominance quality through the complementary strengths of both pixel types while avoiding the manufacturing complexity and cost increases associated with five-color sub-pixel implementations.
Data Source
AI summary
The invention provides an image device with improved chrominance quality. The image device includes a plurality of RGBW pixels, a plurality of RGBY pixels, and a plurality of RBGB pixels. Each RGBW pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel. Each RGBY pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a yellow sub-pixel. Each RBGB pixel includes a red sub-pixel, a green sub-pixel, and two blue sub-pixels. The RGBW pixels, RGBY pixels, and RBGB pixels are mixed in the image device. The image device of the present invention can solve the problem of dark yellow in the conventional RGBW display while achieving a white balance status. As a result the chrominance quality is improved.