Touch Device Shielding Layer and Grounding Wire
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional touch devices are prone to misoperation due to external signal interference, particularly from peripheral connection wires, which can cause inaccurate detection of touch locations.
Innovation Solution
A touch device with a shielding layer surrounding the sensing electrode structure and a grounding wire connected to the shielding layer to shield signal interference, combined with peripheral connection wires electrically connected to the sensing electrode structure, improving sensitivity and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peripheral connection wires are used to electrically connect the sensing electrode structure to the external detection circuit, then the touch device can transmit capacitance change signals, but external signal interference causes misoperation and reduces detection accuracy
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the peripheral connection wires and external electromagnetic signals. This shielding layer acts as a mediator that blocks harmful external signals from reaching the connection wires, while allowing the functional signal transmission to proceed uninterrupted. The shielding layer is connected to ground through a grounding wire, providing a safe path for interfering signals to be dissipated, thus protecting the touch device operation without affecting the intended signal transmission function.
2Measurement precision
If the sensing electrode structure is exposed without shielding, then the device structure remains simple, but capacitance change signals are easily interfered with causing inaccurate touch location detection
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the peripheral connection wires and external electromagnetic signals. This shielding layer acts as a mediator that blocks harmful external signals from reaching the connection wires, while allowing the functional signal transmission to proceed uninterrupted. The shielding layer is connected to ground through a grounding wire, providing a safe path for interfering signals to be dissipated, thus protecting the touch device operation without affecting the intended signal transmission function.
3Measurement precision
If shielding components are added to protect against interference, then detection accuracy improves, but the device structure becomes more complex
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the peripheral connection wires and external electromagnetic signals. This shielding layer acts as a mediator that blocks harmful external signals from reaching the connection wires, while allowing the functional signal transmission to proceed uninterrupted. The shielding layer is connected to ground through a grounding wire, providing a safe path for interfering signals to be dissipated, thus protecting the touch device operation without affecting the intended signal transmission function.
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 shields signal interference, reducing misoperation and enhancing the reliability of the touch device's operation by isolating the peripheral connection wires from external interference.
Implementation Method 1
a grounding wire electrically connected to the shielding layer
Implementation Method 2
a shielding layer surrounding periphery of the sensing electrode structure
Data Source
AI summary
The present disclosure relates to a touch technology, especially to a touch device and a manufacturing method thereof. The touch device comprises a sensing electrode structure, a shielding layer, a plurality of peripheral connection wires and a grounding wire. The shielding layer surrounds the periphery of the sensing electrode structure. The plurality of peripheral connection wires are located under the shielding layer and electrically connected to the sensing electrode structure. The grounding wire is electrically connected to the shielding layer. Thus, in accordance with the present disclosure, the touch device can shield external interference, and the reliability for operation of the touch circuit can be improved.