Touch Window Ground Electrode ESD Discharge Path
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Solution Overview
Problem
Touch windows experience electrical signal interference due to static electricity or ESD, leading to reduced accuracy and reliability in input operations.
Innovation Solution
A touch window design featuring a ground electrode on the cover substrate, connected to a circuit substrate through an open area, which prevents static electricity and ESD by providing a discharge path, thereby reducing signal interference and enhancing accuracy and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch window is installed on a display surface, then user input capability is enabled, but static electricity and ESD cause electrical signal interference
Solution Approach 1:
A ground electrode is introduced as an intermediary element between the touch window and the circuit substrate. This ground electrode provides a dedicated path for static electricity and ESD to discharge, preventing these electrical disturbances from interfering with the touch signal and circuit operations.
Solution Approach 2:
The patent converts the harmful static electricity and ESD into a beneficial discharge path through the ground electrode. By providing a controlled route for these electrical disturbances to safely exit through the open area, the system transforms potential signal interference into a harmless discharge mechanism that protects the touch window's reliability.
2Reliability
If the ground electrode is disposed along the edge of the cover substrate, then static electricity prevention is improved, but the structure becomes more complex
Solution Approach 1:
The ground electrode is segmented into a specific edge-disposed configuration rather than covering the entire substrate. This segmentation allows the ground electrode to be positioned only where it is most effective (along the edges where static electricity accumulates), reducing material usage and simplifying the overall structure while maintaining optimal static electricity prevention.
Solution Approach 2:
The ground electrode is strategically positioned along the edges of the cover substrate where static electricity and ESD are most likely to accumulate. This local quality approach concentrates the anti-static function precisely where it is needed most, rather than uniformly distributing it across the entire substrate, thereby optimizing effectiveness while minimizing structural complexity.
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 ground electrode effectively prevents static electricity and ESD from entering the touch window, improving the accuracy and reliability of touch inputs by discharging electrical signals, thus minimizing signal interference.
Implementation Method 1
The ground electrode is electrically connected to the ground connecting part through the open area. The ground electrode prevents static electricity or ESD in the touch window. That is, the static electricity or ESD moves along a path of the ground electrode
Data Source
AI summary
Disclosed is a touch window. The touch window includes a cover substrate; a ground electrode on the cover substrate; and a circuit substrate on the cover substrate, including a ground connecting part connected with the ground electrode and an open area to expose the ground connecting part, wherein the ground electrode is electrically connected to the ground connecting part through the open area.