Sandwich type large-area high-density flexible array sensor and preparation method thereof

Abstract

The invention relates to the field of sensors, and discloses a sandwich type large-area high-density flexible array sensor and a preparation method thereof. The sensor comprises an upper polar plate,a lower polar plate, and an array pressure-sensitive layer and an insulating adhesive layer arranged between the upper polar plate and the lower polar plate, wherein the upper polar plate and the lower polar plate are provided with corresponding array electrodes and wires, the array electrodes are of a row and column line structure, the electrodes in each column are connected through the wires, the position, corresponding to the array pressure-sensitive layer, of the insulating adhesive layer is hollowed out, and the preparation method comprises the following steps: preparing an upper polar plate and a lower polar plate by adopting a silk-screen printing process; preparing a pressure-sensitive composite material; printing an uncured pressure-sensitive composite material on the array electrode on one polar plate by adopting a silk-screen printing process to form an array pressure-sensitive layer; and adhering the upper polar plate and the lower polar plate through an insulating adhesive. The method is simple in process, high in efficiency and low in cost, and the prepared large-area high-density flexible array sensor is high in sensitivity, good in stability and large in pressure sensing range.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a sandwich-type large-area high-density flexible array sensor and a preparation method thereof. Background technique [0002] With the improvement of science and technology and modernization level, people have higher and higher requirements for pressure monitoring. It is no longer limited to pressure monitoring on regular rigid surfaces, and there are various forms. Ordinary rigid sensors can no longer meet people's actual needs. . Flexible pressure sensors can be bent or even folded at will, small in size, thin in thickness, flexible materials are basically non-toxic and harmless, and have good compatibility with the human body. A lot of research and application have been done. [0003] In recent years, with the rapid development of robotic bionic skin, flexible wearable devices and other fields, people's demand for large-area and high-density flexible sensor arrays has continued to inc...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the low utilization rate of materials and high production cost in the preparation of large-area flexible sensors by traditional photolithography technology in the prior art, and when large-area integration, if the array density is high, the efficiency will be too low, and the preparation For the problem of excessive difficulty, provide a sandwich type large-area high-density flexible array sensor and its preparation method, which is prepared by a full screen printing process, with simple process, high efficiency, and low cost, and the prepared large-area high-density flexible array sensor The array sensor has high sensitivity, good stability and large pressure sensing range

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