Touch Sensor Electrode Layout With Variable-Width Rows for Reliable Displays
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Solution Overview
Problem
Existing display devices face challenges in achieving improved reliability and display quality, particularly in the design of sensor electrodes and their connections, which affect the overall performance and functionality.
Innovation Solution
The display device incorporates a first sensor electrode row and a second sensor electrode row with varying widths and configurations, including bridge lines and alternate arrangements, to enhance connectivity and reliability, with specific portions of the second sensor electrode row connected to different pads or the same pad, and boundary lines with diagonal or straight edges to optimize electrode layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second sensor electrode row has a constant width, then the manufacturing process is simpler, but the connectivity and reliability between sensor electrodes is reduced
Solution Approach 1:
The second sensor electrode row employs varying width across different regions rather than a uniform width. Specifically, the electrode row has a first width in a first region and a second width in a second region, where the widths differ. This local variation optimizes electrical connectivity and signal reliability in different areas of the sensing region while maintaining manufacturing feasibility through a controlled patterning process.
2Reliability
If the second sensor electrode row has varying widths with multiple portions, then the connectivity and display quality are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The electrode row is designed with different widths in different regions to optimize local performance characteristics. The first portion has a width optimized for one function while the second portion has a width optimized for another function, allowing each region to perform its specific task with high efficiency while using standard manufacturing processes.
Solution Approach 2:
The second sensor electrode row is divided into multiple distinct portions (first portion and second portion) with different width characteristics. This segmentation allows each portion to be optimized independently for its specific function while being manufactured as part of the same electrode structure through coordinated patterning steps.
3Reliability
If the first sensor electrodes are connected through bridge lines, then the electrical connectivity is improved, but the device complexity increases due to additional connection structures
Solution Approach 1:
The bridge lines connecting adjacent first sensor electrodes are integrated with the second sensor electrode row structure. The connection structures are merged into the overall electrode pattern design, allowing electrical connectivity between sensor electrodes while minimizing additional discrete components and simplifying the overall device architecture.
Data Source
AI summary
The present disclosure relates to a display device including a first sensor electrode row including a plurality of first sensor electrodes and extending in a first direction in a sensing area and a second sensor electrode row extending in a second direction in the sensing area, wherein a width of the second sensor electrode row in the first direction is not constant, a first edge of the second sensor electrode row comprises a first boundary line and a second boundary line, and each of the first boundary line and the second boundary line crosses the first sensor electrode row.