Touch sensor and preparation method thereof
AssigneeNuovo Film, Inc.
InventorsKai Jiang, Hakfei Poon
Life of this patent
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Abstract
A touch sensor comprises a substrate, and a conductive thin film, the conductive thin film comprising an emitting layer, a receiving layer, and a piezoelectric layer sandwiched between the emitting layer and the receiving layer; the conductive thin film is provided with a conductive pattern region and a conductive channel region. By sandwiching a piezoelectric layer between an emitting layer and a receiving layer, the touch sensor integrates a touch feedback function, the structural technology is simple, and the cost is low.
Claims8
A preparation method for a touch sensor, comprising the following steps:
- coating an emitting layer on a substrate, and drying and curing the emitting layer;
- coating a piezoelectric layer on the emitting layer, and drying and curing the piezoelectric layer;
- coating a receiving layer on the piezoelectric layer, and drying and curing the receiving layer;
- polarizing the piezoelectric layer;
- and
- etching the receiving layer, the piezoelectric layer and the emitting layer into patterns by a laser process, a photolithography process and a screen printing process.
A preparation method for a touch sensor, comprising the following steps:
- providing a substrate, coating an emitting layer on the substrate, and drying and curing the emitting layer;
- providing an auxiliary substrate, coating a receiving layer on the auxiliary substrate, and drying and curing the receiving layer;
- coating a piezoelectric layer on the receiving layer or the emitting layer, and drying and curing the piezoelectric layer;
- adhering the emitting layer or the receiving layer not coated with the piezoelectric layer to the piezoelectric layer by a conductive adhesive, and removing the auxiliary substrate;
- polarizing the piezoelectric layer;
- and
- etching the receiving layer, the piezoelectric layer and the emitting layer into patterns by a laser process, a photolithography process and a screen printing process.
Dependencies are inferred from the claim text.