Elastic Member for Pressure Sensor Stability
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Solution Overview
Problem
Existing electronic devices with electrostatic pressure sensors face challenges in accurately sensing pressure values due to environmental factors, changes in elasticity of the elastic layer, and variations in the inter-electrode layer gap, leading to inconsistent performance.
Innovation Solution
An electronic device configuration with a pressure sensor setup that includes a first and second conductive plate, an elastic member, and a processor that determines pressure levels and adjusts threshold values, ensuring accurate sensing regardless of environmental factors and layer changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrostatic type pressure sensor is used to sense pressure based on capacitance change, then pressure sensing function is achieved, but adhesive strength is weakened due to environmental factors such as atmospheric pressure, temperature, humidity, and external impact
Solution Approach 1:
The patent introduces an elastic member positioned between the pressure sensor and the display panel to cushion and absorb the impact of environmental factors such as atmospheric pressure, temperature changes, humidity, and external impact. This elastic member acts as a buffer that maintains stable adhesive strength between the pressure sensor and the display panel despite varying environmental conditions, thereby resolving the contradiction between reliability and harmful environmental factors.
2Measurement precision
If the pressure sensor is directly adhered to the display panel, then pressure sensing is enabled, but performance degrades due to changes in elasticity of the elastic layer and inter-electrode layer gap
Solution Approach 1:
The patent introduces an elastic member as an intermediary component between the pressure sensor and the display panel. This elastic member mediates the mechanical interaction, maintaining consistent elasticity and inter-electrode layer gap despite external pressures or temperature changes. By positioning the elastic member in this intermediate location, the system achieves stable pressure sensing accuracy while compensating for compositional changes in the elastic layer and layer gap.
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 enables the electronic device to accurately sense pressure values and maintain performance consistency across varying environmental conditions and material changes, enhancing user interaction and device reliability.
Implementation Method 1
an elastic member comprising an elastic material interposed between the second conductive plate and the mid-plate
Implementation Method 2
The electrostatic type pressure sensor can sense a pressure based on a change in capacitance formed between two electrodes in response to a user's pressure. The capacitance may be increased as a distance between the two electrodes approaches is decreased due to the user's pressure.
Data Source
AI summary
The present disclosure relates to an electronic device and a method capable of allowing a pressure sensor to accurately sense a pressure value regardless of environmental factors, a change in elasticity of an elastic layer, and a change in an inter-electrode layer gap, wherein the method may include determining, using the pressure sensor, a pressure level while there is no external pressure against the front plate and adjusting at least one threshold level for the electronic device to use when there is an external pressure against the front plate, based at least in part on the determined pressure level.