Touch Substrate Electrode Blocks for Signal-Noise Ratio
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Solution Overview
Problem
Current touch screens exhibit low sensitivity due to inadequate signal-noise ratio and capacitance change, which affects their touch efficiency and precision.
Innovation Solution
A touch substrate design featuring electrode blocks with insulated first and second electrode groups arranged crosswise, connected by metal bridges, increasing fringe field capacitance and signal-noise ratio through enhanced electrode configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional touch sensor configurations are used, then device complexity is reduced, but touch sensitivity and signal-noise ratio deteriorate
Solution Approach 1:
The touch sensor is divided into multiple electrode blocks, each containing first and second electrode groups arranged in different directions. This segmentation allows each electrode group to independently detect touch signals along its respective direction, improving overall touch sensitivity and signal-noise ratio while maintaining manageable device complexity through modular architecture
Solution Approach 2:
The patent introduces multi-directional electrode groups (first electrode group in one direction, second electrode group in another direction) within each electrode block. This dimensional approach enables detection of touch signals from multiple orientations simultaneously, enhancing touch sensitivity without proportionally increasing device complexity through efficient spatial utilization
2Measurement precision
If electrode blocks with multiple electrode groups are used, then signal-noise ratio improves, but manufacturing complexity increases
Solution Approach 1:
Multiple electrode groups (first and second electrode groups) are merged within unified electrode blocks, sharing common structural support and insulation layers. This merging approach enables simultaneous detection along multiple directions while reducing overall manufacturing complexity compared to implementing separate sensor systems for each direction
Solution Approach 2:
Each electrode block contains multiple electrode groups that serve multiple functions: detecting touch signals in different directions, providing redundancy for improved signal-noise ratio, and enabling comprehensive touch detection across the display surface. This multi-functionality reduces the need for separate specialized components, simplifying manufacturing
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design improves touch sensitivity by increasing the signal-noise ratio and fringe field capacitance, leading to higher precision and efficiency in touch screen performance.
Implementation Method 1
increasing fringe field capacitance and signal-noise ratio through enhanced electrode configurations
Data Source
AI summary
A touch substrate, a touch screen, and an electronic device are provided. The touch substrate includes a touch layer. The touch layer includes at least two electrode blocks having a first electrode group and a second electrode group. The first electrode group includes at least two first electrodes arranged in a first direction and/or a second direction, and the second electrode group includes at least two second electrodes arranged in the first direction and/or the second direction.