Multi-primary color display device pixel arrangement
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Solution Overview
Problem
Existing display devices using three primary colors (RGB) face limitations in color reproduction range and brightness, with attempts to expand this range through additional colors leading to increased data requirements and decreased aperture ratio, and visual issues such as reduced resolution and brightness.
Innovation Solution
A display device using pixels with sub-pixels of four or more primary colors, where (n−m+1) colors are included in every (n−m+1) pixels, with specific arrangements to minimize brightness differences and include colors like yellow and red to maintain high brightness and reduce visual disparities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If four or more primary colors are used to enlarge color reproduction range, then color reproduction range is improved, but number of data increases and aperture ratio decreases
Solution Approach 1:
The pixel is segmented into multiple sub-pixels, each displaying a different primary color. By dividing the pixel into sub-pixels with specific color assignments (e.g., red, green, blue, and yellow sub-pixels), the system can display a broader color reproduction range while managing data requirements through structured color distribution across segments.
Solution Approach 2:
Different sub-pixels within the same pixel are assigned different color properties to optimize local color reproduction. Each sub-pixel is optimized for its specific color, allowing the overall pixel to achieve enhanced color reproduction range while maintaining manageable data complexity through localized color specialization.
2Adaptability or versatility
If four or more primary colors are used to enlarge color reproduction range, then color reproduction range is improved, but aperture ratio decreases
Solution Approach 1:
The pixel aperture is segmented into multiple sub-pixel apertures, each optimized for its specific color. This segmentation allows the system to maintain a higher effective aperture ratio by ensuring that each sub-pixel contributes optimally to light transmission for its designated color, rather than requiring a single large aperture for all colors.
Solution Approach 2:
Each sub-pixel aperture is locally optimized for its specific color wavelength, allowing maximum light transmission efficiency for that color. This local optimization maintains the overall aperture ratio while enabling broader color reproduction, as each sub-pixel aperture is sized and positioned to maximize its contribution to the overall pixel area.
3Adaptability or versatility
If additional primary colors are added beyond RGB, then color reproduction range is enlarged, but brightness is reduced
Solution Approach 1:
Each sub-pixel is locally optimized for its specific color with appropriate color filters and emission characteristics. By ensuring that each sub-pixel maintains high brightness for its designated color through localized optimization of color filter transmission and sub-pixel emission properties, the overall pixel can achieve both expanded color reproduction range and maintained brightness.
Solution Approach 2:
The system changes the parameters of individual sub-pixels (color filter characteristics, emission wavelength, intensity) to optimize both color purity and brightness. By adjusting these parameters at the sub-pixel level, the system can maintain high brightness while expanding the overall color reproduction range through coordinated sub-pixel performance.
4Adaptability or versatility
If pixels are divided into multiple primary colors, then color reproduction range is improved, but visual problems such as reduced resolution are generated
Solution Approach 1:
The pixel is segmented into multiple sub-pixels that are closely spaced and optimized for their respective colors. This segmentation, when implemented with appropriate sub-pixel sizing and spacing, allows the system to maintain high resolution while providing expanded color reproduction capabilities through the coordinated display of multiple color sub-pixels.
Solution Approach 2:
Multiple sub-pixels displaying different primary colors are merged within a single pixel footprint to create a multi-color display element. This merging allows the system to maintain the spatial resolution of a single pixel while achieving broader color reproduction through the combined output of multiple color sub-pixels.
Data Source
AI summary
A display device which exhibits functional effects in which color separation between sub-pixels constituting a pixel is hardly recognized and white line display is easily recognized as one line, in enlargement of the color reproduction range in image display using multi-primary colors, and thereby improves display quality, and provides a liquid crystal display device including such a display device. The display device displays an image constituted by pixels each including sub-pixels of four or more colors, wherein the pixels constituting the display device mainly include a pixel arranging a sub-pixel of a color having the highest brightness value in a central region of the pixel.