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Single-electrode touch sensor and preparation method thereof

A touch sensor, single-electrode technology, applied in instruments, electrical components, electronic switches, etc., can solve the problems of increased device manufacturing costs, difficulty in making electrodes, hindering the development of triboelectric generators, etc. simple structure

Active Publication Date: 2014-05-07
BEIJING INST OF NANOENERGY & NANOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will lead to an increase in the cost of device fabrication
At the same time, it is difficult for us to make electrodes on some friction materials, such as skin and air. These limitations greatly hinder the development of this triboelectric generator

Method used

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  • Single-electrode touch sensor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0090] Embodiment 1: Preparation of single sensing electrode touch sensor

[0091] A 10cm long×10cm wide×25μm thick Al foil was cut as an electrode layer, and a layer of polymer (PDMS) was fabricated as a triboelectric material on top of the electrode layer by spin coating. Connect the Al foil with a copper wire, and connect it to a resistor, and the other end of the resistor is grounded. The copper wire is also connected to a voltmeter. When the polymer layer PDMS is touched by hand, the voltmeter has a corresponding electrical signal output, indicating that it can convert mechanical energy into electrical energy for power generation. When the hand is separated from the polymer-layered PDMS, opposite electrical signals can be observed.

Embodiment 2

[0092] Example 2: Preparation of multi-electrode unit touch sensor

[0093]A plexiglass with a length of 10 cm x a width of 10 cm x a thickness of 1.59 mm was cut by a laser as a supporting element of the device. Using the method of magnetron sputtering, 16 transparent electrode unit (ITO) arrays with a length of 1 cm x a width of 1 cm were fabricated on the supporting element to form a sensing electrode layer. The 16 electrode units are respectively connected to the 16 resistors with 16 copper wires, and the other end of each resistor is grounded. At the same time, each resistor is connected in parallel with a voltage test device. A layer of polymer material polydimethylsiloxane PDMS is fabricated on the sensing electrode layer so that it completely covers the entire electrode array. When a finger touches the surface of the polymer material on the electrode unit, due to the difference in friction properties between the skin and the polymer layer, an electrical signal can be...

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Abstract

The invention discloses a single-electrode touch sensor and a preparation method thereof. The single-electrode self-driven touch sensor is built due to the fact that a touch action applier and materials of a touch layer have different frictional electrical properties. When the touch action applier conducts touch-separation or sliding or other actions on the touch layer, an electric signal generation mechanism of the touch sensor will be triggered, and an electric signal is automatically output outwards, so that the touch actions are recorded and fed back, and the functions of the sensor are achieved. The single-electrode touch sensor can record the touch actions in real time, has the advantages of being low in cost, self-driven, simple in structure and the like, and has the quite wide application prospect in intelligent electronic devices and main-machine interaction interfaces.

Description

technical field [0001] The invention relates to a touch sensor and a preparation method thereof, in particular to a single-electrode touch sensor and a preparation method thereof. Background technique [0002] The working principle of existing triboelectric generators is based on the mutual contact and separation of two different triboelectric materials. However, all reported triboelectric generators are based on the deposition of conductive metals on the surface of triboelectric thin film materials to achieve external output power. This will lead to an increase in device manufacturing cost. At the same time, it is difficult for us to make electrodes on some friction materials, such as skin and air. These limitations greatly hinder the development of this triboelectric generator. [0003] The touch sensor realizes the detection of touch by converting the signal of the touch device into a resistance or voltage output that has a linear or arbitrary functional relationship wi...

Claims

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Application Information

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IPC IPC(8): G06F3/041G06F3/045H02N1/04
CPCG06F3/041H02N1/04H03K17/96H03K2217/96066G06F2203/04103
Inventor 王中林杨亚张虎林
Owner BEIJING INST OF NANOENERGY & NANOSYST
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