Flexible capacitive-type pressure sensor and preparation method therefor

Abstract

The invention provides a flexible capacitive-type pressure sensor, and the sensor comprises an upper electrode, a lower electrode, and a composite dielectric layer disposed between the upper electrodeand the lower electrode. The composite dielectric layer comprises a first structure layer connected with the upper electrode, a second structure layer connected with the lower electrode, and a deformable layer disposed between the first structure layer and the second structure layer. The deformable layer has a topological structure. Compared with the prior art, the senor structure based on the 3Dprinting technology precisely controls the size and distribution of holes in a pressure-sensitive material, and improves the dynamic range and linearity of the sensor. The setting of the deformable structure of the composite dielectric layer enables the characteristics of the dielectric strain effect to be fully utilized, thereby improving the dielectric strain coefficient of the dielectric material, and further improving the sensitivity of the sensor.

Description

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AI Technical Summary

Benefits of technology

This new type of device uses three dimensional (3D) printers that create precise holes within it's materials for better performance or more accurate measurements compared with previous methods like laser drilling techniques. By controlling these dimensions accurately, this device has improved ability to measure small changes caused by external factors such as temperature variations over time without losing accuracy due to thermal expansion issues affecting its functioning properly.

Problems solved by technology

Technological Problem addressed in this patented technical paper describes different ways how to improve flexibility and durability of electronic components such as touch screens used at various locations like outdoors without being visible due to their opaque nature. Existing methods involve increasing rigidity and reducing weight, making them difficult to use in practical situations where there may also be environmental concerns associated with disposables containing harmful chemical agents. There is an urgent demand for improved flexible pressure sensor technology capable of detecting smaller pressures within wide ranges despite having excellent mechanical performance and usages potential.

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