Display Panel Light-Shielding Segmentation for Higher Aperture Ratio
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Solution Overview
Problem
The aperture ratio of current on-screen touch display panels is not high due to wide light-shielding bars occupying large areas of sub-pixel light-emitting regions, affecting the contrast of the displayed image.
Innovation Solution
The display panel is designed with a light-shielding matrix layer that includes separate first and second light-shielding bars covering data and touch lines, respectively, dividing sub-pixel light-emitting regions into first and second sub-light-emitting regions, reducing the total width of the light-shielding bars and increasing the area ratio of light-emitting regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wide light-shielding bars are used to cover data lines and touch lines, then electrical signal transmission is ensured, but aperture ratio decreases
Solution Approach 1:
The light-shielding matrix is segmented into three separate types of light-shielding bars: first light-shielding bars covering data lines, second light-shielding bars covering touch lines, and third light-shielding bars covering scan lines. This segmentation allows each bar type to be optimized independently, reducing the total light-shielding area while maintaining electrical signal transmission reliability for both data and touch lines.
2Reliability
If light-shielding bars cover both data lines and touch lines, then signal transmission is protected, but light-emitting region area is reduced
Solution Approach 1:
The patent separates the light-shielding function into distinct bar types positioned at different locations: first light-shielding bars at data line positions, second light-shielding bars at touch line positions, and third light-shielding bars at scan line positions. This spatial segmentation ensures that each signal transmission path is protected by its own dedicated light-shielding structure, minimizing the total area occupied by light-shielding bars while maintaining comprehensive signal protection.
3Reliability
If light-shielding bars are positioned at data lines and touch lines, then electrical signals are shielded, but contrast is affected
Solution Approach 1:
By segmenting the light-shielding matrix into separate bar types positioned precisely at data lines, touch lines, and scan lines, the patent minimizes the total light-shielding area while maintaining effective electrical signal shielding. This reduces the obstruction to light emission, thereby improving display contrast compared to using wide combined light-shielding bars.
Data Source
AI summary
A display device and a display panel thereof are provided by embodiments of the present application, wherein the display panel includes a plurality of pixel regions distributed in a light-shielding matrix, each of the pixel regions includes at least three sub-pixel light-emitting regions; and the display panel includes data lines, touch lines, and a light-shielding matrix layer. The present application solves a technical problem that an aperture ratio of a display panel is not high in the prior art, and contrast of a displayed image of the display panel is affected.