Hybrid flexible touch sensor

Abstract

The invention discloses a hybrid flexible touch sensor. The sensor is composed of a shielding layer, a flexible substrate, a plane interdigital electrode, an insulation spacer layer, an elastic dielectric layer, and a contact layer; the shielding layer, the flexible substrate, the insulation spacer layer, the elastic dielectric layer and the contact layer are orderly arranged from bottom to top; the insulation spacer layer is a frame structure, the plane interdigital electrode is adhered on the flexible substrate and located in an inner frame of the insulation spacer layer; the thickness of the insulation spacer layer is 0.01mm-0.06mm thicker than that of the plane interdigital electrode. The electrode of a capacitor part adopts an interdigital electrode structure; compared with the traditional parallel-plate type capacitive touch sensor, the touch sensor abandons a floating electrode, thereby facilitating the flexibility and the miniaturization of the touch sensor; the capacitive andresistive complementary structure is adopted, and the resistive structure is used as an expansion structure of the capacitive structure so that the measurement range can be enlarged.

Description

technical field [0001] The invention belongs to the technical field of tactile sensors, in particular to a hybrid flexible tactile sensor. Background technique [0002] At present, with the advancement of science and technology and the improvement of people's living standards, service robots are gradually integrating into various fields of life. Similar to the tactile neurons of human fingers, tactile sensors, as a key part of robot fingers to perceive external physical information, can help robots Perceiving the physical characteristics of external objects in various complex environments can also assist the manipulator to complete expected actions. In addition, the sense of touch also plays a pivotal role in the research of bionic skin. For this reason, it has become the mainstream trend to develop a fully flexible electronic skin that can be worn on a large area. In order for the manipulator to better grasp and manipulate objects, the tactile sensor on the manipulator mus...

AI Technical Summary

Problems solved by technology

However, the conductive performance of conductive rubber mainly depends on the amount of conductive particles. The more conductive particles, the better the conductive performance. Sensitivity of rubber-made tactile sensors

In addition, whether it is a capacitive or resistive touch sensor, its measurement range is not too large, which greatly limits the working range of the manipulator.

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