Ionic flexible touch sensor

Abstract

The invention discloses an ionic flexible touch sensor. A sensor comprises a plurality of conducting layers, a plurality of insulating layers and two packaging layers. The mutiple conducting layers are arranged in a laminated manner. One insulating layer is arranged between every two conducting layers in a laminated manner and the two packaging layers are respectively packaged on the upper surfaceand the lower surface of the conducting layers arranged in the laminated manner; wherein the conductive layer is made of an ionic conductive flexible gel material, and the insulating layer and the packaging layer are respectively made of an insulating high-molecular polymer material. The ionic flexible touch sensor can be integrated with a contact position measurement module and a contact pressure/tensile force detection module. A complete set of complete structural design and manufacturing technical solution of the ionic flexible touch sensor is provided, and a product has the advantages ofhigh optical transparency, deep flexibility, low manufacturing cost, high position measurement resolution, high sensitivity and the like.

Description

technical field [0001] The invention relates to the technical field of flexible electronics, in particular to the material and device structure design of an ion-type flexible touch screen. Background technique [0002] The controller touch screens in the current market are mostly made of glass-based indium tin oxide (ITO). This kind of controller touch screen is rigid and transparent; this technology coats ITO on PET and thin glass, and through the conductive Sex as a conductive layer to make resistive touch screens as well as capacitive touch screens. [0003] In the market, flexible electronics unicorn companies such as Royole Technology have risen, and electronic devices such as folding mobile phones have been launched. The market for flexible electronic materials is very hot. However, flexible touch screens are still the blue ocean for the development of electronic material technology. [0004] The existing core technology of flexible touch screen is mainly transparent...

AI Technical Summary

Problems solved by technology

The ITO glass screen is rigid and fragile, and its light transmittance is less than 80%. Due to light wave interference, the color turns yellow. In terms of material sources, indium tin oxide is a rare earth material. With the increasing use of mobile phones and other electronic devices Large, the stock of this material is getting less and less, and the price is rising; the market needs to develop alternative flexible touch screen materials and designs to replace existing technologies

Among them, carbon-based conductive films such as graphene and carbon nanotubes have complex manufacturing processes and limitations in flexibility; in addition, because carbon-based materials have different background colors, such as carbon nanotube conductive films slightly With dark cyan, it will bring color cast to the OLED screen below; further, if the degree of film coating cannot guarantee a high degree of uniformity, the degree of color cast will be aggravated

Zinc oxide conductive film is colorless, transparent and has high light transmittance. It is a cheap wide-bandgap semiconductor material. It is currently used on solar panels in the market. However, the cost of large-scale industrial production of zinc oxide conductive film is relatively high. Technical application bottleneck, uniformity is difficult to guarantee; and like the previous transparent conductive film, it has the same limitation for the realization of flexibility

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