Touch Electrode Layout for Uniform Edge Sensing in Displays
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Solution Overview
Problem
Existing display devices face issues with non-uniform touch performance in the outer peripheral portions of the display area, leading to suboptimal user interaction.
Innovation Solution
The display device incorporates a design with first and second touch electrodes arranged in perpendicular directions, connected by bridge portions, and expanded touch electrodes in the outer peripheral region to enhance touch sensing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If touch electrodes are arranged at equal intervals with the same shape in the display area, then manufacturing is simplified and design requirements are met, but touch performance in the outer peripheral portion becomes non-uniform
Solution Approach 1:
The patent applies local quality by differentiating the shape of touch electrodes based on their position. Touch electrodes in the outer peripheral portion are designed with a first shape, while those in the non-outer peripheral portion use a second shape. This local differentiation ensures uniform touch sensing performance across the display area, resolving the contradiction between simplified manufacturing and performance uniformity.
2Manufacturing precision
If touch electrodes in the outer peripheral portion are expanded, then touch sensing performance is improved, but device complexity increases
Solution Approach 1:
The patent employs asymmetry by designing touch electrodes with different shapes for different regions. The outer peripheral touch electrodes have an expanded first shape, while inner touch electrodes have a second shape. This asymmetric design improves touch sensing performance in the outer peripheral portion without significantly increasing overall device complexity, as the shape differentiation follows a systematic pattern.
Data Source
AI summary
Provided is a display device. According to an aspect of the present disclosure, there is provided a display device. The display device includes a display panel including a display area and a non-display area. The display device further includes a plurality of first touch electrodes disposed in the display area and arranged in a first direction. The display device further includes a plurality of second touch electrodes disposed in the display area and arranged in a second direction perpendicular to the first direction. The display device further includes a bridge portion disposed between the plurality of first touch electrodes and including a first touch connection line configured to connect the plurality of first touch electrodes.