Display Panel Edge Pixel Aperture Gradients for Zigzag Reduction
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Solution Overview
Problem
Conventional special-shaped display panels exhibit a zigzag pattern and color differences at the edge due to rectangular pixel arrangements, leading to a reduced visual effect and user experience.
Innovation Solution
The display substrate features an irregular edge portion with edge pixel units having gradually varying light transmission rates, and a first light-shielding pattern is introduced to create multiple transition sub-steps, reducing the size of protruding steps and smoothing transitions, thereby minimizing the zigzag appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If rectangular pixel arrangements are used in special-shaped display panels, then the manufacturing process is simple, but the edge exhibits zigzag pattern and color differences
Solution Approach 1:
The pixel arrangement is segmented into different types based on position: inner pixels with standard aperture ratios and edge pixels with gradually varying aperture ratios. This segmentation allows the edge pixels to be optimized for smooth transitions while inner pixels maintain standard specifications, resolving the contradiction between manufacturing simplicity and edge smoothness.
Solution Approach 2:
Different aperture ratios are applied locally to different pixel units based on their position. Edge pixel units have aperture ratios that differ from inner pixel units, with the edge pixels having gradually varying aperture ratios to achieve smooth edge transitions. This local differentiation resolves the contradiction by allowing standard manufacturing processes for most pixels while optimizing edge quality.
2Ease of manufacture
If edge pixel units have uniform aperture ratios, then the manufacturing process is simplified, but color differences appear among edge pixels
Solution Approach 1:
The aperture ratios are made locally adaptive based on pixel position. While inner pixels maintain uniform aperture ratios for manufacturing simplicity, edge pixels have locally differentiated aperture ratios that vary gradually to compensate for geometric distortions, thereby achieving color uniformity without sacrificing overall manufacturing simplicity.
Solution Approach 2:
The aperture ratio parameter is changed progressively across edge pixel units rather than being uniform. This parameter variation compensates for the geometric effects at the edge, ensuring that all edge pixels display colors uniformly despite their different positions and orientations, thus resolving the contradiction between manufacturing simplicity and color precision.
3Adaptability or versatility
If the display panel has a special shape (circular, semicircular, octagon), then the adaptability to different surroundings is improved, but the edge pixels exhibit reduced visual effect
Solution Approach 1:
The pixel units at the edge are given special local properties with gradually varying aperture ratios tailored to their specific positions on the special-shaped boundary. This local optimization ensures that regardless of the overall special shape (circular, semicircular, octagon), the edge pixels maintain high visual quality and uniform color display, resolving the contradiction between environmental adaptability and edge visual quality.
Data Source
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AI summary
A display substrate, a display panel, and a display apparatus are provided, aiming to solve the issue of appearance of zigzag, and of the color difference among pixels, at the edge of display panels. The display substrate comprises a display region (2), and the display region (2) has an irregular edge portion including a plurality of edge pixel units (3), adjacent to a light-shielding region (1); and the plurality of edge pixel units (3) have gradually varying light transmission rates along the irregular edge portion.