Display Panel Mesh Electrode Bridge Segmentation
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Solution Overview
Problem
Existing touch panels, particularly on-cell touch panels, face issues with black spots caused by conductive bridges connecting adjacent touch electrodes, leading to visual and functional impairments.
Innovation Solution
The proposed display panel incorporates a touch control structure with a plurality of first and second mesh electrodes, where adjacent mesh blocks are electrically connected through conductive bridges with specific mesh line configurations, minimizing the area and number of slopes where mesh blocks connect to conductive bridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive bridges are used to electrically connect adjacent mesh blocks, then electrical connectivity is improved, but black spots occur causing visual impairments
Solution Approach 1:
The conductive bridge is segmented into multiple separate conductive portions rather than a single continuous structure. Each conductive portion connects to the mesh block through separate contact points, dividing the original single connection into multiple smaller connections. This segmentation reduces the total area of the conductive bridge that appears as black spots while maintaining electrical connectivity through multiple pathways.
Solution Approach 2:
The patent introduces a multi-layer structure where conductive bridges are positioned at different heights (z-dimension) relative to the mesh blocks. By utilizing vertical stacking and different layer levels, the conductive connections are made in three-dimensional space rather than a single plane, reducing the visual impact on the display surface while ensuring electrical connectivity.
2Object-affected harmful factors
If mesh line area is reduced to minimize black spots, then visual quality is improved, but electrical conductivity may be compromised
Solution Approach 1:
Multiple separate conductive portions are electrically connected to form an integrated conductive bridge structure. By combining multiple small conductive elements into a unified functional bridge, the patent achieves both reduced visual impact (smaller individual areas) and maintained electrical conductivity (collective connectivity through multiple pathways).
Solution Approach 2:
The conductive bridge structure combines multiple conductive materials or layers with different properties. By using composite conductive structures, the patent achieves optimized electrical conductivity while minimizing the visible area, as different materials can be strategically placed to provide conductivity where needed while remaining invisible or minimally visible.
Data Source
AI summary
A display panel is provided. The display panel includes a touch control structure. The touch control structure includes a plurality of first mesh electrodes and a plurality of second mesh electrodes. A respective one of the plurality of first mesh electrodes includes a plurality of first mesh blocks consecutively electrically connected along a first direction. A respective one of the plurality of second mesh electrodes includes a plurality of second mesh blocks consecutively electrically connected along a second direction. Two adjacent second mesh blocks of the plurality of second mesh blocks are electrically connected to each other through a respective second conductive bridge. The respective second conductive bridge includes a plurality of second single mesh lines spaced apart from each other, and in a same layer as the plurality of first mesh blocks and the plurality of second mesh blocks.