Touch Control Structure with Conductive Bridges for Mesh Electrode Connectivity
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Solution Overview
Problem
Existing touch control structures face challenges in achieving high touch control accuracy and reliable connectivity between mesh electrodes, particularly in multi-layer on-cell touch panels.
Innovation Solution
The proposed touch control structure incorporates a plurality of first and second mesh electrodes arranged in rows and columns, respectively, with conductive bridges connecting adjacent second mesh blocks across first mesh electrodes, enhancing connectivity and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple mesh electrodes are used to improve touch control accuracy, then touch control accuracy is improved, but connectivity between mesh electrodes deteriorates
Solution Approach 1:
The patent introduces conductive bridges as intermediary elements that connect adjacent second mesh blocks across the first mesh electrodes. These conductive bridges serve as mediators that establish reliable electrical connectivity between mesh electrodes while preserving the mesh structure's touch sensing capabilities. The conductive bridges are positioned to cross over the first mesh electrodes, creating a reliable connection path without disrupting the overall mesh electrode architecture.
2Measurement precision
If mesh electrode density is increased to improve touch control accuracy, then touch control accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the second mesh electrodes into multiple discrete second mesh blocks that are consecutively connected in columns. This segmentation allows for independent positioning and connection of each block through conductive bridges, simplifying the manufacturing process. Instead of creating a continuous dense mesh, the segmented approach enables modular assembly where each block can be manufactured and positioned separately, reducing overall manufacturing complexity while maintaining touch control accuracy.
Data Source
AI summary
A touch control structure includes a plurality of first mesh electrodes respectively in a plurality of rows and a plurality of second mesh electrodes respectively in a plurality of columns. A respective one of the plurality of second mesh electrodes includes a plurality of second mesh blocks consecutively connected in a respective column. In at least a portion of the touch control structure having at least four of the plurality of second mesh blocks, inside an area defined by an active pen sensing range with reference to any point in the portion of the touch control structure, an electrode ratio of a first occupied area actually occupied by mesh lines of first mesh electrodes to a second occupied area actually occupied by mesh lines of second mesh electrodes is in a range of 0.8 to 1.2.