Pixel Structure Layout to Reduce Head-Shaking Display Artifacts
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Solution Overview
Problem
In display technology, adjacent subpixels with the same polarity in adjacent columns cause head-shaking patterns, especially in low Pixel Per Inch (PPI) displays, leading to greenish edges during ¼ white-block image display.
Innovation Solution
A pixel structure where subpixels in the same column have the same color and are electrically coupled to the same data line, with gate lines arranged between adjacent rows and columns of subpixels, and a driving method that enables gate lines sequentially to control subpixels, reducing polarity-related issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If two gate lines are arranged between two adjacent rows of subpixels with adjacent columns having the same polarity, then the display structure is simple and easy to manufacture, but head-shaking patterns occur and greenish edges appear in low PPI displays
Solution Approach 1:
The patent applies asymmetry by arranging subpixels with alternating polarities in adjacent columns rather than having the same polarity. Specifically, odd-numbered columns have one polarity while even-numbered columns have the opposite polarity, breaking the symmetric pattern that causes head-shaking artifacts. This asymmetric polarity distribution eliminates the interference patterns while maintaining a relatively simple gate line structure.
Solution Approach 2:
The patent implements local quality by assigning different polarity characteristics to different column regions. Each column's polarity is locally determined by its column index (odd or even), creating spatially varying electrical properties that prevent the formation of head-shaking patterns. This local differentiation of polarity quality resolves the display artifacts without requiring complex global restructuring.
2Device complexity
If subpixels in adjacent columns have the same polarity to simplify the data line configuration, then the device complexity is reduced, but image quality deteriorates due to head-shaking patterns
Solution Approach 1:
The patent uses asymmetry in polarity assignment where adjacent columns have opposite polarities instead of the same polarity. This asymmetric arrangement prevents the formation of head-shaking patterns by ensuring that subpixels with the same polarity are not adjacent, thereby improving image quality while keeping the data line configuration relatively simple through systematic polarity alternation.
Solution Approach 2:
The patent segments the display into columns with alternating polarity groups. By dividing the display into odd-numbered columns with one polarity and even-numbered columns with the opposite polarity, it creates distinct segments that prevent interference patterns. This segmentation approach maintains manageable data line complexity while significantly improving image quality.
3Ease of manufacture
If a conventional gate line arrangement is used with two gate lines between adjacent rows, then the manufacturing process is simplified, but display artifacts appear in low PPI products
Solution Approach 1:
The patent applies asymmetry by implementing alternating polarity patterns in adjacent columns, which prevents the formation of head-shaking artifacts. This asymmetric polarity distribution ensures consistent display quality across different PPI levels while maintaining a simple two-gate-line arrangement between adjacent rows, thus preserving ease of manufacture.
Solution Approach 2:
The patent implements local quality control by assigning specific polarity characteristics to each column based on its position (odd or even). This local differentiation ensures that display quality remains consistent and artifact-free across the entire display area, particularly in low PPI products, without complicating the overall gate line manufacturing process.
Data Source
AI summary
A pixel structure, a driving method and a display substrate are provided. The pixel structure includes a pixel module, a plurality of gate lines and a plurality of data lines. The pixel module includes subpixels having A colors, where A is an integer greater than or equal to 3. The pixel module includes subpixels arranged in rows and columns, two gate lines are arranged between two adjacent rows of subpixels, two columns of subpixels are arranged between two data lines, and in two columns of subpixels, at least two subpixels having a same color and electrically coupled to the two gate lines are electrically coupled to a same data line. In the present disclosure, an edge is grayish in a case that a ¼ white-block image is displayed, so an abnormality in image quality is not easy to perceive as compared with the related art.