Touch Device Conductive Axis Electrostatic Shielding
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Solution Overview
Problem
Conventional touch devices require an extra shielding layer to prevent signal interference, which increases thickness, manufacturing cost, and complexity.
Innovation Solution
A touch device design where the first conductive axes, with openings for second conductive units and bridging structures, function both as touch position sensors and a shielding layer, eliminating the need for an additional shielding layer by connecting to grounding potential for electrostatic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an extra shielding layer is added to prevent signal interference, then the anti-interference ability is improved, but the integral thickness and device complexity increase
Solution Approach 1:
The first conductive axis is designed to perform dual functions: serving as both the touch sensing electrode and the electrostatic shielding layer. By making the conductive axis multi-functional, the patent eliminates the need for a separate shielding layer, thereby reducing thickness while maintaining anti-interference capability
Solution Approach 2:
The patent merges the shielding function with the touch sensing function by integrating the first conductive axis to serve both purposes. This combination of functions into a single component reduces the overall number of layers and decreases the integral thickness of the touch device
2Reliability
If an extra shielding layer is added to prevent signal interference, then the anti-interference ability is improved, but the manufacturing cost increases
Solution Approach 1:
The first conductive axis is designed to perform dual functions: serving as both the touch sensing electrode and the electrostatic shielding layer. By making the conductive axis multi-functional, the patent eliminates the need for a separate shielding layer, thereby reducing manufacturing cost through fewer materials and simplified production processes
Solution Approach 2:
The patent merges the shielding function with the touch sensing function by integrating the first conductive axis to serve both purposes. This combination reduces manufacturing cost by eliminating the need for additional shielding layer materials and simplifying the manufacturing process
3Reliability
If an extra shielding layer is added to prevent signal interference, then the anti-interference ability is improved, but the manufacturing process becomes more complicated
Solution Approach 1:
The first conductive axis is designed to perform dual functions: serving as both the touch sensing electrode and the electrostatic shielding layer. By making the conductive axis multi-functional, the patent eliminates the need for a separate shielding layer, thereby simplifying the manufacturing process and reducing process complexity
Solution Approach 2:
The patent merges the shielding function with the touch sensing function by integrating the first conductive axis to serve both purposes. This combination simplifies the manufacturing process by reducing the number of manufacturing steps and eliminating the need to manufacture and assemble a separate shielding layer
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
This design reduces the integral thickness and manufacturing costs of touch devices while maintaining anti-interference functionality, simplifying the manufacturing process and improving signal detection accuracy.
Implementation Method 1
the first conductive axis is connected to a grounding potential or a fixed potential, so as to conduct electrostatic shielding for the second conductive units
Data Source
AI summary
The present disclosure provides a touch device comprising at least one first conductive axis, a plurality of second conductive units, a plurality of bridging structures and an insulating layer. The first conductive axis has a plurality of openings in which the second conductive units are located respectively. There is a space existed between each of the second conductive units and the corresponding first conductive axis. Each of the majority of the bridging structures are electrically connected to every two adjacent second conductive units in two adjacent first conductive axes. The insulating layer is located between the bridging structure and the first conductive axis. The insulating layer has a plurality of holes exposing the second conductive units respectively, and the bridging structures connect to the second conductive through the holes. In addition, the disclosure also provides an electrostatic shielding method of touch device.