Touch Display Panel Concave-Convex Pixel Arrangement
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Solution Overview
Problem
Manufacturing high-resolution in-cell touch liquid crystal panels is complex and costly, and existing structures often compromise transmittance and aperture ratio, leading to issues like reduced display quality and color offset.
Innovation Solution
A touch display panel design featuring a substrate with scan and data lines, pixel units with strip electrodes in a concave-convex arrangement, and touch electrodes and lines configured to minimize through-hole interference, enhancing transmittance and aperture ratio while reducing color offset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch lines and through holes are arranged between adjacent pixel units, then touch functionality is achieved, but transmittance and aperture ratio decrease
Solution Approach 1:
The patent moves the touch line arrangement from the horizontal dimension (between pixel columns) to the vertical dimension (between pixel rows), allowing touch functionality to be achieved while minimizing interference with the horizontal pixel electrode arrangement and improving overall transmittance
Solution Approach 2:
The patent applies different electrode configurations to different regions: pixel electrodes use strip shapes for light transmission, while touch electrodes use interdigitated comb structures localized in specific regions, optimizing both display quality and touch functionality in their respective zones
2Adaptability or versatility
If touch lines and through holes are arranged between pixel units, then touch functionality is achieved, but color offset occurs
Solution Approach 1:
The patent uses asymmetric interdigitated touch electrode configurations where the comb teeth are positioned and dimensioned differently to compensate for optical path differences, thereby reducing color offset while maintaining touch sensitivity
Solution Approach 2:
By arranging touch electrodes vertically between pixel rows rather than horizontally between pixel columns, the patent separates touch functionality from the color-critical horizontal pixel structure, minimizing color offset
3Reliability
If through holes are used to connect touch electrodes and touch lines, then electrical connection is achieved, but black domain lines occur and display effect deteriorates
Solution Approach 1:
The patent embeds the touch electrode structure within the pixel structure boundaries, with touch electrodes positioned in the gaps between pixel electrodes rather than requiring separate through-hole connections, thereby eliminating black domain lines while maintaining electrical connectivity
Solution Approach 2:
The patent extracts the touch electrode connection method from the traditional through-hole approach and replaces it with surface-level interdigitated comb structures that connect via conductive layers, eliminating the need for deep through holes that cause display defects
Data Source
AI summary
The disclosure provides a touch display panel and a display device. The touch display panel includes a substrate, a plurality of scan lines, a plurality of data lines, pixel units, touch electrodes and a plurality of touch lines. Pixel electrodes in each pixel unit include a plurality of strip electrodes, and two adjacent pixel units form a unit group including a first pixel unit and a second pixel unit. The first pixel unit includes a first part and a second part. The second pixel unit includes a third part and a fourth part. The first pixel unit and the second pixel unit are in concave-convex fit arrangement. Each touch line is electrically connected to a corresponding touch electrode via a through hole located between the second part and the fourth part.