Touch Display Panel Layout for Higher Aperture Ratio
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Solution Overview
Problem
The aperture ratio of on-screen touch display panels is not high due to wide light-shielding bars occupying large areas of light-emitting regions, affecting the contrast of the displayed image.
Innovation Solution
The display panel design includes separate arrangements of data and touch lines, with light-shielding bars divided into first and second bars covering data and touch lines respectively, reducing the overall width of the light-shielding bars and increasing the area of light-emitting regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light-shielding bars are used to cover data lines and touch lines, then electrical signal transmission is ensured, but the aperture ratio decreases due to wide light-shielding bars occupying large areas of light-emitting regions
Solution Approach 1:
The light-shielding bar is divided into a first light-shielding bar for covering the data line and a second light-shielding bar for covering the touch line. This segmentation allows each light-shielding bar to be optimized independently, reducing the total width occupied by light-shielding structures while maintaining electrical signal transmission functionality.
2Length of stationary object
If touch lines are integrated into the display panel for on-screen touch, then the thickness of the display device is reduced, but the aperture ratio decreases due to the need for light-shielding bars
Solution Approach 1:
The integrated light-shielding structure is segmented into first and second light-shielding bars that separately cover the data line and touch line. This segmentation reduces the total width of light-shielding regions, thereby increasing the aperture ratio while maintaining the thin-profile advantage of on-screen touch integration.
3Reliability
If light-shielding bars cover both data lines and touch lines, then signal transmission is protected, but the width of light-shielding bars increases occupying excessive area
Solution Approach 1:
The single light-shielding bar covering both data line and touch line is segmented into a first light-shielding bar for the data line and a second light-shielding bar for the touch line. This segmentation reduces the total width of light-shielding structures while maintaining signal transmission protection.
Solution Approach 2:
Different light-shielding bars are positioned at different locations: the first light-shielding bar covers the data line while the second light-shielding bar covers the touch line. This local quality approach allows each light-shielding bar to be optimized for its specific function, reducing overall width while maintaining signal transmission.
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.