Electrode Group Trace Layout for Precise Touch Sensing
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Solution Overview
Problem
Existing multimedia electronic devices face challenges in integrating efficient and intuitive touch-based input schemes alongside traditional input methods, particularly in areas where display and sensor layers are integrated, leading to inefficiencies in touch sensitivity and display performance.
Innovation Solution
The electronic device incorporates a sensor layer with specific electrode configurations, including first and second electrodes and trace lines arranged in distinct directions, along with varying sensing units and electrode groups, to enhance touch sensitivity and display efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single electrode configuration is used in the sensor layer, then the device structure is simple, but touch sensitivity and response precision are insufficient
Solution Approach 1:
The sensor layer electrodes are divided into multiple first electrode groups and second electrode groups arranged in different directions. Each group can be independently controlled and sensed, enabling segmented touch detection that improves precision while maintaining manageable structural complexity through modular organization.
Solution Approach 2:
The patent introduces electrodes arranged in multiple directions (first direction and second direction intersecting at angles) to add dimensional complexity to the sensing capability. This multi-directional arrangement enables the sensor to detect touch inputs from various orientations, significantly improving touch sensitivity and response precision.
2Measurement precision
If electrode groups are densely arranged to improve sensing resolution, then touch input precision increases, but the area occupied by trace lines and non-sensing regions increases
Solution Approach 1:
The electrode structure is segmented into discrete first and second electrode groups with defined spacing. This segmentation allows for optimized trace line routing that connects to specific electrode groups without requiring continuous trace line coverage, thereby reducing the total trace line area while maintaining high sensing resolution through the segmented electrode arrangement.
3Illumination intensity
If the sensor layer uses complex electrode patterns to enhance display performance, then image quality improves, but manufacturing complexity increases
Solution Approach 1:
Different regions of the sensor layer have different electrode configurations optimized for local functions. The first and second electrode groups are arranged in specific patterns in different areas to optimize both touch sensing and display performance locally, rather than using a uniform complex pattern throughout. This localized optimization simplifies manufacturing by allowing region-specific processing.
Data Source
AI summary
An electronic device includes a display layer, and a sensor layer. A sensing area and a peripheral area are defined within the sensor layer. The sensor layer includes a plurality of first electrodes disposed in the sensing area, a plurality of first trace lines, a plurality of second electrode groups disposed in the sensing area, and a plurality of second trace lines electrically connected to the plurality of second electrode groups and overlapping the sensing area. The plurality of second electrode groups include a first-second electrode and a second-second electrode. The plurality of second trace lines include a plurality of first-second trace lines electrically connected to the first-second electrode and a second-second trace line electrically connected to the second-second electrode.