Display Substrate Virtual Quadrilateral Sub-pixel Arrangement
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Solution Overview
Problem
Current display technologies face challenges in increasing resolution due to limitations in the precision of fine metal masks and evaporation processes, leading to graininess and distortion, especially when displaying characters and graphics with high pixel density.
Innovation Solution
A display substrate arrangement featuring alternately arranged first, second, and third sub-pixels forming virtual quadrilaterals, where sub-pixels with cut-off corners are used to create a more uniform distribution of brightness centers, allowing for higher resolution without physical sub-pixel movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sub-pixel sizes are reduced and pixel pitches are reduced to increase resolution, then display resolution is improved, but manufacturing precision requirements for FMM and evaporation process worsen
Solution Approach 1:
The invention divides the display area into multiple virtual pixels, each composed of multiple physical sub-pixels. This segmentation allows the physical sub-pixel structure to remain at a manufacturable size while creating higher-resolution virtual pixel structures through software processing, thereby achieving high resolution without requiring proportionally higher manufacturing precision
Solution Approach 2:
The invention uses multiple physical sub-pixels to represent a single virtual pixel, creating redundant copies of pixel information. This copying approach allows the physical sub-pixel dimensions to be larger and easier to manufacture while still achieving high effective resolution through computational processing of the copied pixel data
2Measurement precision
If sub-pixel rendering technology is used to simulate higher resolution with fewer sub-pixels, then display resolution is improved, but brightness center distribution uniformity worsens
Solution Approach 1:
The invention employs asymmetric arrangements of sub-pixels within virtual pixels, where sub-pixels are positioned at non-uniform intervals and with varying orientations. This asymmetric design allows for more flexible control of brightness center distribution, enabling uniform illumination across the display while maintaining high effective resolution through the rendered virtual pixel structure
Data Source
AI summary
A display substrate, a display device, a high-precision metal mask are provided. The display substrate includes first, second, third sub-pixels. In first direction, first and third sub-pixels are alternated to form first sub-pixel rows, second sub-pixels form second sub-pixel rows. In second direction, first and second sub-pixel rows are alternated, first direction is approximately perpendicular to second direction. Two first and two third sub-pixels in two adjacent rows and two adjacent columns form a 2*2 array, in the array, two first sub-pixels are in different rows and different columns, two third sub-pixels are in different rows and different columns, at least one of two first and two third sub-pixels is a pattern where corner is cut off, connection lines of centers of two first and two third sub-pixels form non-square virtual quadrilateral, and second sub-pixel is within virtual quadrilateral.