Touch Layer Opening Wiring for Accurate Input Near Sensor Areas
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Solution Overview
Problem
The formation of an opening in a touch layer can cause a break in the touch line, leading to inaccurate recognition of user input such as touch or hovering inputs.
Innovation Solution
An electronic device is designed with a wire for electrical connection between touch electrodes around the opening, and a compensation pattern is formed to improve sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an opening is formed in the touch layer to expose a sensor, then the sensor can be visually exposed to the outside, but the touch line around the opening is broken and touch electrode loss occurs
Solution Approach 1:
A wire is introduced as an intermediary element to restore electrical connection between touch electrodes that are separated by the opening. The wire acts as a mediator that bridges the gap created by the opening, ensuring continuous electrical connectivity while allowing the opening to remain for sensor exposure.
Solution Approach 2:
The touch electrode structure is segmented into multiple parts around the opening, with each segment connected through the wire. This segmentation allows the touch layer to accommodate the opening while maintaining overall electrical continuity through the wire connections.
2Reliability
If a wire is formed around the opening to connect touch electrodes, then electrical connection is restored, but device complexity increases
Solution Approach 1:
The wire is positioned locally around the opening only where electrical connection is needed, rather than adding wiring throughout the entire touch layer. This localized approach restores electrical connectivity while minimizing the increase in overall device complexity.
3Ease of manufacture
If the touch line is broken around the opening, then the opening can be formed for sensor exposure, but touch input accuracy is reduced
Solution Approach 1:
The wire serves as a mediator that restores electrical connectivity between touch electrodes separated by the opening, ensuring that touch input accuracy is maintained despite the presence of the opening for sensor exposure.
Solution Approach 2:
The electrical conductivity parameter is maintained through the wire connection, ensuring that the electrical properties of the touch layer remain continuous despite the physical interruption caused by the opening.
Data Source
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AI summary
According to various embodiments of the present invention, an electronic device may comprise a touch layer in which a sensor may be disposed below a designated area, wherein the touch layer comprises: a first touch line including a first touch electrode and a second touch electrode arranged in a first direction in the designated area; a second touch line including a third touch electrode and a fourth touch electrode arranged in a second direction while crossing the first touch line in the designated area; a first opening formed in the area where the first touch line and the second touch line cross each other; and a first connection wiring disposed in the peripheral portion of the first opening and connecting the first touch electrode and the second touch electrode to each other. Various other embodiments are also possible.