US 11,442,571 B2 · Touch surface device

Abstract

A touch surface device, comprising at least: an element comprising a first face forming the touch surface and a second face opposite to the first face; an acoustic wave sensor including at least one portion of piezoelectric material disposed between two electrodes, the portion of piezoelectric material and both electrodes being structured by forming surface wavinesses as wrinkles, the sensor being secured to the second face of the element such that apexes or valleys of the wrinkles are in contact with the second face of the element; an electronic circuit coupled to the electrodes of the sensor and configured to identify, from an electric signal intended to be outputted from the electrodes of the sensor, at least one touch gesture made on the touch surface.

Claims13

Dependent claims

A touch surface device, comprising:

an element comprising a first face forming the touch surface and a second face opposite to the first face;
an acoustic wave sensor including at least one portion of piezoelectric material disposed between two electrodes, the portion of piezoelectric material and both electrodes having a wave shape including a plurality of wrinkles even when the sensor is not moving, the sensor being secured to the second face of the element such that apexes or valleys of the wrinkles are in contact with the second face of the element;
and
an electronic circuit coupled to the electrodes of the sensor and configured to identify, from an electric signal outputted from the electrodes of the sensor, at least one touch gesture made on the touch surface.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/899,762Filed 12 Jun 2020

Priority

FR 19 0681624 Jun 2019

Published

US 2020/0401262 A124 Dec 2020

Granted

13 Sep 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

G06F 3/0416
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: control or interface arrangements specially adapted for…
G06F 3/043
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: using propagating acoustic waves
H10N 30/072
Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base: by laminating or bonding of piezoelectric…
H10N 30/073
By laminating or bonding of piezoelectric or electrostrictive bodies: by fusion of metals or by adhesives

Touch surface device

Life of this patent

Touch surface device

Life of this patent

Abstract

Claims13