Divided Touch Sensor Layout for Boundary Signal Detection
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Solution Overview
Problem
Existing multimedia electronic devices face challenges in efficiently and intuitively processing touch-based inputs due to limitations in sensor design and driver configurations, leading to suboptimal performance and user experience.
Innovation Solution
The electronic device incorporates a sensor with a defined sensing area and peripheral area, featuring a plurality of electrodes arranged in specific directions and boundary lines, with a sensor driver that outputs symmetrical transmit signals to these electrodes, utilizing trace lines and contacts to enhance input detection and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sensor with divided sensing area and symmetrical electrode arrangement is used, then touch input processing efficiency and intuitiveness are improved, but device complexity increases due to multiple electrodes, trace lines, and contacts
Solution Approach 1:
The sensing area is divided into multiple regions with different boundary lines (first boundary line, second boundary line, third boundary line) that extend in different directions. This segmentation allows independent control and optimization of different sensing regions, improving touch input processing efficiency while managing complexity through modular design
Solution Approach 2:
The sensor employs asymmetrical electrode arrangements where first electrodes extend in a first direction and second electrodes extend in a second direction intersecting the first direction. The boundary lines are positioned at different locations and orientations, creating an asymmetrical layout that optimizes touch detection across different areas of the sensing region
2Measurement precision
If multiple boundary lines and divided sensing areas are implemented, then measurement precision of touch inputs is improved, but manufacturing precision requirements increase
Solution Approach 1:
Different boundary lines are positioned at specific locations within the sensing area based on local detection requirements. The first boundary line extends in a first direction, the second boundary line extends in a second direction, and the third boundary line extends in a third direction, allowing each region to be optimized for its specific function while maintaining overall precision
Solution Approach 2:
The sensor utilizes multiple directions (first direction, second direction intersecting the first, third direction) for arranging electrodes and boundary lines. This multi-dimensional approach allows precise touch detection by analyzing signals from multiple orientations, improving measurement precision while distributing manufacturing tolerances across different spatial dimensions
Data Source
AI summary
An electronic device includes a sensor in which a sensing area and a peripheral area proximate to the sensing area are defined, and a sensor driver driving the sensor. The sensor includes first electrodes disposed in the sensing area and arranged along a first direction, and second electrodes arranged along a second direction intersecting the first direction. A boundary extending along the second direction is defined in the sensing area. The sensor driver simultaneously outputs a plurality of boundary transmit signals to a plurality of boundary electrodes disposed in a boundary area including the boundary among the plurality of first electrodes.