Color Filter Substrate Edge Pixel Aperture Uniformity
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Solution Overview
Problem
Non-rectangular display devices face issues with display quality at the edges due to border lines, either causing color deviation with smooth lines or step-like structures with segmented lines, which deteriorate the overall image quality.
Innovation Solution
A color filter substrate with edge pixels divided by a border line, where each edge pixel includes standard and to-be-adjusted subpixels, with additional light-shielding layers or apertures to ensure identical aperture ratios, resulting in a smooth border line and prevention of color deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a smooth border line is used to ensure display quality at the edge, then the border line is smooth and continuous, but the subpixels of edge pixels have different aperture ratios causing color deviation
Solution Approach 1:
The patent applies local quality by introducing additional light-shielding layers or apertures specifically at the display portions of to-be-adjusted subpixels, making each subpixel's effective light-receiving area uniform while preserving the overall smooth border line shape. This localized modification ensures that edge subpixels have the same aperture ratio as standard subpixels without altering the smooth contour of the display region border.
2Manufacturing precision
If a segmented border line with small segments is used to provide identical aperture ratios, then all subpixels have identical aperture ratios, but step-like structures are formed deteriorating display quality
Solution Approach 1:
Instead of segmenting the border line into visible steps, the patent applies local quality modifications within the existing smooth border line framework. By adding light-shielding layers or apertures only at specific subpixel locations, the patent achieves uniform aperture ratios without creating visible step-like structures on the border line itself.
3Manufacturing precision
If additional light-shielding layers or apertures are added to to-be-adjusted subpixels, then identical aperture ratios are achieved, but device structure becomes more complex
Solution Approach 1:
The patent segments the light-shielding function by introducing additional light-shielding layers or apertures only at the display portions of to-be-adjusted subpixels, rather than modifying the entire light-shielding layer structure. This localized segmentation achieves uniform aperture ratios while minimizing the overall structural complexity.
Data Source
AI summary
A color filter substrate, a display panel and a display device are provided. The color filter substrate includes a plurality of edge pixels. Each edge pixel includes a plurality of subpixels. Each subpixel is divided by the border line into a display portion at the display region and a non-display portion beyond the display region. The non-display portion is covered with a light-shielding layer. The plurality of subpixels includes a standard subpixel and a plurality of to-be-adjusted subpixels. For each to-be-adjusted subpixel, an additional light-shielding layer is provided at the display portion of the to-be-adjusted subpixel, or the light-shielding layer covering the non-display portion of the to-be-adjusted subpixel is provided with at least one aperture.