Wide-range flexible pressure sensor and preparation method thereof

Abstract

The invention relates to a wide-range flexible pressure sensor and a preparation method thereof, the wide-range flexible pressure sensor comprises an upper-layer flexible substrate, a lower-layer flexible substrate, a patterned electrode layer, a high-sensitivity resistance sensitive layer, an elastic support layer and a flexible packaging layer, the patterned electrode layer is printed and fixed on the surface of the lower-layer flexible substrate, the high-sensitivity resistance sensitive layer is printed and fixed on the surface of the upper-layer flexible substrate, and the elastic support layer is printed and fixed on the surface of the lower-layer flexible substrate. The elastic supporting layer and the flexible packaging layer are located between the upper-layer flexible substrate and the lower-layer flexible substrate, and a gap is formed between the upper-layer flexible substrate and the lower-layer flexible substrate. According to the wide-range flexible device, pressure enhanced sensing detection with the maximum range of 1000N is realized through the design of the hole microstructure and the special bulge structure, and meanwhile, the wide-range flexible device also has good curved / planar conformal attachment detection and relatively good linear output. Integrated forming is achieved through the flexible additive manufacturing technology, so that good adhesion, binding force and stability among all the layers are guaranteed, the preparation technology is simple, cost is low, and batch production and preparation are easy.

Description

technical field [0001] The invention relates to the technical field of preparation of flexible pressure sensors, in particular to a large-scale flexible pressure sensor and a preparation method thereof. Background technique [0002] With the rapid development of flexible sensing technology, it is widely used in the Internet of Things, smart wear, medical health, consumer electronics, smart cars, human-computer interaction and other fields. In recent years, flexible pressure sensors based on flexible sensing technology have made great progress in sensitivity, hysteresis, thickness, etc., but the pressure detection range of flexible pressure sensors needs to be further expanded in some market application scenarios. At present, conventional flexible pressure sensors The maximum detection range is about 100N, which is difficult to meet the needs of large-scale application scenarios. In order to meet this challenge, the present invention provides a large-scale flexible pressure ...

AI Technical Summary

Problems solved by technology

In recent years, flexible pressure sensors based on flexible sensing technology have made great progress in terms of sensitivity, hysteresis, thickness, etc., but the pressure detection range of flexible pressure sensors in some market application scenarios needs to be further expanded. Currently, conventional flexible pressure sensors The maximum detection range is about 100N, which is difficult to meet the needs of large-scale application scenarios

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