Integrated Pressure-Sensitive Touch Panel Electrode Design
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Solution Overview
Problem
The manufacturing process for pressure-sensitive touch panels is complex and costly due to the need for a separate process for adding a pressure sensor after the touch sensor is manufactured, which is not compatible with the touch sensor's process.
Innovation Solution
A pressure-sensitive touch panel design where the touch sensor and pressure sensor share electrode layers and materials, with a dielectric layer between the electrodes, allowing for simultaneous patterning and integration without additional processing steps, simplifying the manufacturing process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure sensor is added after the touch sensor is manufactured using a separate process, then the pressure-sensitive touch panel achieves pressure sensing capability, but the manufacturing process becomes complex and manufacture cost increases
Solution Approach 1:
The patent merges the pressure sensor and touch sensor into a single integrated structure where the pressure sensor's electrodes and dielectric layer share the same layer structure as the touch sensor. This combining approach eliminates the need for separate manufacturing processes and reduces overall device complexity while maintaining pressure sensing capability
Solution Approach 2:
The electrode layers and dielectric structures serve dual functions: they form part of the touch sensor structure for touch detection and simultaneously constitute the pressure sensor structure for pressure sensing. This multi-functionality allows a single manufacturing process to produce both sensing capabilities
2Reliability
If a pressure sensor is added after the touch sensor is manufactured using a separate process, then the pressure-sensitive touch panel achieves pressure sensing capability, but manufacture cost increases
Solution Approach 1:
The patent merges the pressure sensor and touch sensor into a single integrated structure where the pressure sensor's electrodes and dielectric layer share the same layer structure as the touch sensor. This combining approach eliminates the need for separate manufacturing processes and reduces overall device complexity while maintaining pressure sensing capability
Solution Approach 2:
The electrode layers and dielectric structures serve dual functions: they form part of the touch sensor structure for touch detection and simultaneously constitute the pressure sensor structure for pressure sensing. This multi-functionality allows a single manufacturing process to produce both sensing capabilities
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 integrated design enables pressure sensing by varying self-capacitance based on pressure, simplifying the manufacturing process and reducing costs while maintaining effective pressure touch operation.
Implementation Method 1
When the pressure-sensitive touch panel is subjected to pressure, the dielectric layer of the pressure sensor may be deformed, a self-capacitance of the pressure sensor may be varied therewith
Implementation Method 2
the dielectric layer is formed of an elastic insulation material
Data Source
AI summary
A pressure-sensitive touch panel, a method for manufacturing the pressure-sensitive touch panel, and a touch display screen are provided. The pressure-sensitive touch panel includes a substrate and a touch sensor and a pressure sensor arranged on the substrate. The touch sensor includes a first electrode and a second electrode, and the pressure sensor includes an upper electrode, a lower electrode and a dielectric layer arranged between the upper electrode and the lower electrode. The upper electrode and the first electrode are arranged in the same layer and formed of the same material, the lower electrode and the second electrode are arranged in the same layer and formed of the same material, and the dielectric layer is formed of an elastic insulation material.