Pressure Touch Panel Ring Electrode Segmentation
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Solution Overview
Problem
Traditional touch-sensitive panels and screens can only detect the position of an object touching the surface and struggle to accurately infer pressure values, leading to poor accuracy and potential misjudgment in pressure detection.
Innovation Solution
A pressure and touch-sensitive panel incorporating an elastic and dielectric element with a ring force-sensitive electrode, connected to a touch-sensitive processing apparatus, which emits driving signals and measures pressure-sensitive values to calculate the position and strength of pressure exerted on the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional capacitive touch sensitive panels are used to detect touch position, then the position detection function is achieved, but the pressure detection accuracy is poor and misjudgment occurs
Solution Approach 1:
The touch sensitive panel is segmented into multiple independent force sensitive electrodes (first, second, third, and fourth electrodes) positioned at different locations. Each electrode independently detects pressure information from different regions, allowing the system to distinguish between actual pressure touches and false triggers, thereby improving both measurement precision and reliability
Solution Approach 2:
An elastic and dielectric element is introduced as an intermediary component between the touch surface and the force sensitive electrodes. This element transmits pressure forces to the electrodes while providing electrical insulation, enabling accurate pressure detection without direct electrical contact and reducing misjudgment
2Loss of information
If capacitive increase detection is used to infer pressure, then pressure information can be obtained, but the accuracy is poor and easy to be misjudged
Solution Approach 1:
The patent replaces the traditional capacitive detection method with a direct mechanical pressure detection approach using force sensitive electrodes. These electrodes directly measure pressure forces through electrical signals generated by pressure application, providing more accurate and reliable pressure information without relying on indirect capacitive changes
Solution Approach 2:
The force sensitive electrodes serve multiple functions: they detect pressure magnitude, determine touch position, and distinguish between different types of touches. This multi-functionality ensures complete pressure information is captured with high accuracy, eliminating the limitations of single-function capacitive detection
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
Enables accurate detection of pressure position and strength, improving the accuracy of pressure sensing beyond traditional capacitive touch-sensitive panels by using a ring force-sensitive electrode and a touch-sensitive processing apparatus to analyze changes in capacitance.
Implementation Method 1
at least one elastic and dielectric element
Implementation Method 2
detect the capacitive increase produced by the area increase of the external object
Implementation Method 3
at least one elastic and dielectric element
Implementation Method 4
measuring circuit to measure pressure sensitive measured values of the driving signal induced by the ring force sensitive electrode
Data Source
AI summary
The present invention provides a pressure and touch sensitive panel, comprising: at least one elastic and dielectric element; and an enclosed force sensitive electrode located by one side of the elastic and dielectric element. The enclosed force sensitive electrode comprises multiple electrical wiring points for connecting to a touch sensitive processing apparatus for the pressure and touch sensitive panel.