Flexible pressure sensing array prepared by utilizing laser cutting manner

Abstract

The invention discloses a flexible pressure sensing array prepared by utilizing a laser cutting manner. The flexible sensing array is composed of a plurality of sensing units connected in parallel, each of the sensing units is a five-layer superimposed structure, and the five-layer superimposed structure separately includes a substrate film, a column electrode, a laser-cut hollow-out piezoresistive film, a row electrode and a protective film from bottom to top, the column electrode is printed on the substrate film, an electrode of the row electrode is printed on the protective film, the laser-cut hollow-out piezoresistive film is sandwiched between the substrate film printed with the column electrode and the protective film printed with the row electrode, and the substrate film and the protective film are bonded together by glue; and in order to reduce crosstalk between the sensing units, a part of the piezoresistive film between the sensing units utilizes laser resection, and a part of connection is remained between the sensing units to keep a relative position and an overall shape unchanged. The flexible pressure sensing array enables the crosstalk to be reduced without increasing assembly complexity, solves the conflict of the crosstalk and the assembly complexity, and can be simultaneously applied to real-time graphical pressure distribution display.

Description

technical field [0001] The invention relates to the technical field of flexible sensors, in particular to a flexible pressure sensing array prepared by laser cutting. Background technique [0002] With the rapid development of wearable devices, flexible sensing technology has attracted the attention of industry and academia. Flexible electronic devices have great application potential in fields such as medical health, bionic haptics, energy, computing, and display. The flexible pressure sensing array has multiple sensing units in the same area, which can reduce the impact of the data offset of a single sensing unit on the entire measurement result, which is conducive to improving the measurement accuracy, and can be compatible with irregular surfaces such as human skin. fit. Moreover, by measuring the pressure at multiple points on the plane, the measurement data can be multiplied, and the measurement results can reflect the spatial distribution of the pressure, which is c...

AI Technical Summary

Problems solved by technology

[0003] Although the flexible pressure sensing array has many advantages, due to the small distance between the sensing units, it is easy to interfere with each other when collecting pressure signals, resulting in large crosstalk in the existing flexible pressure sensing array, and the accuracy of the collected pressure signals is low.

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