Mixed RGBW RGBY RBGB Pixel Array for Chrominance Quality
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Solution Overview
Problem
Conventional RGBW displays suffer from a deficiency in dark yellow color representation, leading to suboptimal chrominance quality, while RGBY displays lack the benefits of RGBW displays and five-color displays are costly and have low brightness and contrast.
Innovation Solution
Incorporating a combination of RGBW, RGBY, and RBGB pixels in an image device, where RGBY pixels address the dark yellow issue and RBGB pixels offset chrominance changes, thereby improving chrominance quality and achieving white balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If RGBW pixels are used, then brightness and contrast are improved, but dark yellow color representation deteriorates
Solution Approach 1:
The display is segmented into different pixel types (RGBW pixels, RGBY pixels, and RBGB pixels) with specific functions. RGBW pixels handle general lighting and contrast, RGBY pixels specifically address yellow color representation, and RBGB pixels compensate for chrominance changes. This segmentation allows each pixel type to optimize for its specific function without compromising overall performance.
Solution Approach 2:
Different regions of the display use different pixel configurations optimized for specific purposes. Areas requiring excellent yellow representation use RGBY pixels, while areas needing high brightness and contrast use RGBW pixels, and chrominance compensation is applied locally where needed. This local optimization resolves the contradiction by allowing each region to have the quality it needs.
2Object-affected harmful factors
If RGBY pixels are added to fix dark yellow, then chrominance quality improves, but white balance becomes unstable
Solution Approach 1:
RBGB pixels serve as a counterweight to the chrominance changes introduced by RGBY pixels. The RBGB pixels with their specific red, green, and blue configurations compensate for the yellow shift caused by RGBY pixels, thereby maintaining white balance stability while still benefiting from improved yellow representation.
Solution Approach 2:
The display dynamically adjusts the parameters and mixing ratios of different pixel types (RGBW, RGBY, RBGB) to maintain optimal white balance. By changing the relative usage proportions of these pixel types based on image content and lighting conditions, the system achieves both improved yellow representation and stable white balance.
3Object-affected harmful factors
If five-color sub-pixels are used, then color representation improves, but cost increases and brightness and contrast decrease
Solution Approach 1:
The patent creates a universal pixel system where RGBW, RGBY, and RBGB pixels can work together to achieve multiple functions: excellent color representation, high brightness, and good contrast. This multi-functional approach replaces the need for separate five-color pixel systems, reducing complexity while maintaining performance.
Solution Approach 2:
The invention merges the advantages of RGBW pixels (brightness and contrast), RGBY pixels (yellow color representation), and RBGB pixels (chrominance compensation) into a unified pixel system. This combination achieves five-color capability without the complexity and brightness loss of traditional five-color displays, as the pixels are merged into a coordinated system rather than separate components.
Data Source
AI summary
An image device with improved chrominance quality 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. At least one row or at least one column comprises sub-pixels of having a same first color. The RGBW pixels, RGBY pixels, and RBGB pixels are mixed in the image device. The image device 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.