Staggered Display Substrate Layout for Uniform Virtual Pixels
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Solution Overview
Problem
Conventional display technologies face challenges in achieving high resolution due to nonuniform distribution of brightness centers of virtual pixels, leading to graininess and distortion in displays.
Innovation Solution
A display substrate design with first, second, and third sub-pixels arranged in specific alternating patterns, forming virtual quadrilaterals with varying distances and symmetry axes, allowing for uniform brightness center distribution without pixel repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sub-pixel sizes are reduced and pixel pitches are reduced to increase resolution, then manufacturing precision requirements increase beyond current production capabilities
Solution Approach 1:
The patent transitions from a traditional grid arrangement to a staggered arrangement where sub-pixels are offset in alternating rows. This dimensional reorganization allows virtual pixel brightness centers to be uniformly distributed without requiring further reduction in physical sub-pixel dimensions, thus achieving higher resolution while maintaining manufacturability
Solution Approach 2:
The patent uses sub-pixel rendering technology where virtual pixels are created by combining light from multiple physical sub-pixels. This copying approach allows the display to simulate higher resolution than the physical pixel count would normally permit, resolving the contradiction between resolution and manufacturing precision
2Measurement precision
If sub-pixel rendering technology is used to simulate higher resolution, then aperture ratio is improved, but brightness centers of virtual pixels become nonuniformly distributed causing graininess and distortion
Solution Approach 1:
The patent introduces asymmetric offset patterns in the staggered arrangement, where even and odd rows are shifted by different amounts relative to each other. This controlled asymmetry in the physical arrangement compensates for the asymmetry in virtual pixel brightness distribution, eliminating graininess and distortion while maintaining the benefits of sub-pixel rendering
Solution Approach 2:
The patent applies different offset distances to different rows (even rows offset by first distance, odd rows offset by second distance). This local differentiation in arrangement parameters allows precise control over virtual pixel brightness center distribution, ensuring uniformity across the entire display while maintaining high resolution
Data Source
AI summary
Display substrate, display device, high-precision metal mask are provided. Display substrate includes: first, second, and third sub-pixels; in first direction, first and third sub-pixels are alternately arranged to form first sub-pixel rows, second sub-pixels form second sub-pixel rows; in second direction, first and second sub-pixel rows are alternately arranged; two first and two third sub-pixels in two adjacent rows and two adjacent columns form 2*2 array; in the array, two first sub-pixels are in different rows and in different columns, so are the two third sub-pixels, connection lines of centers of two first and two third sub-pixels form virtual quadrilateral, second sub-pixel is within virtual quadrilateral; for multiple distances from centers of two first and two third sub-pixels corresponding to same virtual quadrilateral to center of second sub-pixel, at least two distances are different. Brightness centers of virtual pixels have more uniform distribution.