Pixel Arrangement Structure for Display Substrate Grayscale Uniformity
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Solution Overview
Problem
High-resolution display devices require precise manufacturing processes, increasing difficulty and cost due to the need for smaller pixels and tighter spacing, and existing sub-pixel composition optimization technologies face challenges in maintaining display quality, particularly in simulating high pixel resolution with reduced sub-pixels.
Innovation Solution
A pixel arrangement structure with alternately arranged first and second sub-pixels, where geometric centers of sub-pixels in a row or column form straight lines, and a specific ratio of distances between sub-pixel centers optimizes grayscale distribution, improving uniformity and reducing graininess and non-smoothness, thereby enhancing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the size of pixels and spacing between pixels are reduced to improve resolution, then display resolution is improved, but manufacturing precision requirements increase and manufacturing difficulty and cost increase
Solution Approach 1:
The invention divides a pixel into multiple sub-pixels (first sub-pixels, second sub-pixels, third sub-pixels) with different functions. The first sub-pixels provide color display, while the second and third sub-pixels are used for grayscale rendering and sharing among adjacent pixels. This segmentation allows the system to achieve high resolution without requiring all sub-pixels to be manufactured with extremely high precision, as some sub-pixels can be larger and less precise while still contributing to the overall high-resolution display through algorithmic rendering.
Solution Approach 2:
The invention changes the parameter distribution of sub-pixels within a pixel group, specifically setting different sizes for different sub-pixels (first, second, and third sub-pixels have different areas). By optimizing the area ratios and spatial arrangement of these sub-pixels, the system achieves high resolution display效果 while reducing the manufacturing precision requirements for individual sub-pixels, particularly for the grayscale sub-pixels that can be larger and less precisely positioned.
2Ease of manufacture
If sub-pixel count is reduced to simplify manufacturing, then manufacturing difficulty and cost are reduced, but display quality may deteriorate
Solution Approach 1:
The invention uses grayscale sub-pixels (second and third sub-pixels) that can be shared and copied across multiple adjacent color pixels. Instead of having dedicated grayscale sub-pixels for each pixel, the same grayscale sub-pixels serve multiple pixels through sub-pixel rendering algorithms. This copying approach reduces the total number of sub-pixels needed, simplifying manufacturing while maintaining display quality through computational imaging techniques that reconstruct the full-resolution image from the reduced sub-pixel set.
Solution Approach 2:
The grayscale sub-pixels (second and third sub-pixels) serve multiple functions: they provide grayscale rendering for their own pixel group, serve as shared resources for adjacent color pixels, and enable various display modes (color, grayscale, intermediate modes). This multi-functionality allows the display to maintain high quality across different operating modes while using fewer total sub-pixels, thereby simplifying manufacturing without compromising display quality.
Data Source
AI summary
A pixel arrangement structure, a display substrate and a display device. The pixel arrangement structure includes: a plurality of first sub-pixels and a plurality of sub-pixel groups arranged in an array, wherein the plurality of first sub-pixels and the plurality of sub-pixel groups are alternately arranged along a first direction to form pixel rows, and are alternately arranged along a second direction intersected with the first direction to form pixel columns; each of the plurality of sub-pixel groups includes a second sub-pixel, a third sub-pixel and another second sub-pixel sequentially arranged along the first direction; in the same pixel row, a ratio of a distance between the geometric centers of each second sub-pixel and the adjacent third sub-pixel to a distance between the geometric centers of each first sub-pixel and the third sub-pixel in the adjacent sub-pixel group is greater than or equal to ¼ and less than ½.