Shielding Wire for Touch Control Substrate Peripheral Interference
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Solution Overview
Problem
Existing touch panels suffer from non-uniform capacitance distribution in the peripheral region due to mutual capacitance between signal traces and display elements, leading to degraded performance.
Innovation Solution
Incorporating a shielding wire in the peripheral region between signal traces and the touch control region to mitigate interference and promote uniform capacitance distribution, with the shielding wire being electrically connected to grounding devices for enhanced shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal traces are provided in the peripheral region to provide control signals and communicate touch control signals, then the touch panel can function properly, but non-uniform capacitance distribution occurs in the periphery of the touch panel
Solution Approach 1:
A shielding wire is introduced as an intermediary element between the signal traces and the touch control region. This shielding wire acts as a mediator that blocks or reduces the electromagnetic interference and mutual capacitance effects from the signal traces, thereby preventing non-uniform capacitance distribution in the touch control region while allowing the signal traces to continue providing control signals.
2Measurement precision
If the touch control region is enlarged to increase touch resolution, then touch control accuracy is improved, but the impact of non-uniform capacitance distribution from the periphery increases
Solution Approach 1:
The shielding wire serves as a protective intermediary that extends along the periphery, creating an electromagnetic shield that prevents the enlarged touch control region from being affected by non-uniform capacitance distribution. This allows the touch control region to be expanded for higher resolution without suffering from peripheral capacitance interference.
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 solution effectively reduces mutual capacitance and achieves more uniform capacitance distribution, thereby improving touch control accuracy and maintaining product performance without increasing production costs or complexity.
Implementation Method 1
a shielding wire provided in the peripheral region, configured to shield interference of signal traces to the touch control region
Data Source
AI summary
A touch control substrate, a method for fabricating the same, and a touch control display device are provided. The touch control substrate includes a touch control region and a peripheral region surrounding the touch control region. Signal traces and a shielding wire are provided in the peripheral region, the shielding wire being configured to shield interference of the signal traces to the touch control region.