Sensor Layer Electrode Layout for Non-Display Touch Input
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Solution Overview
Problem
Existing multimedia electronic devices face challenges in integrating effective touch-based input schemes that enhance user interaction with displayed images, particularly in areas that do not require image display or touch sensitivity.
Innovation Solution
The electronic device incorporates a sensor layer with a specific electrode and trace line configuration, including first and second electrode groups and trace lines, along with sensing units of varying sizes and shapes, to facilitate enhanced touch sensitivity and input capabilities in non-display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sensor layer is added to enable touch-based input in non-display areas, then touch sensitivity and input functionality are improved, but device complexity increases
Solution Approach 1:
The sensor layer is designed to serve multiple functions: providing touch-based input capability in non-display areas while also serving as a structural component of the display device. The electrode groups and trace lines are configured to detect touch inputs and transmit signals, making the sensor layer an integrated multi-functional element rather than a separate add-on.
Solution Approach 2:
The sensor layer is divided into multiple electrode groups (first electrode groups and second electrode groups) arranged in specific patterns. Each electrode group contains multiple electrodes that are electrically connected through trace lines, creating segmented sensing units that can independently detect touch inputs in different regions of the non-display area.
2Adaptability or versatility
If multiple electrode groups and trace lines are configured in the sensor layer, then input functionality is enhanced, but manufacturing complexity increases
Solution Approach 1:
Multiple electrodes within each electrode group are electrically connected through trace lines to form unified sensing elements. The first electrode groups and second electrode groups are integrated into a single sensor layer structure, combining multiple functional elements into one manufacturable component that can be produced using standard display manufacturing processes.
3Area of stationary object
If the sensor layer is integrated with the display layer, then space utilization is improved, but display performance may be compromised
Solution Approach 1:
The sensor layer is positioned in non-display areas where image quality is not critical, allowing touch input functionality to be added without compromising display performance in the display area. The electrode groups and trace lines are configured to minimize interference with light transmission paths while maximizing touch sensitivity in the non-display regions.
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.