公开(公告)号：US11860272B2

公开(公告)日：2024-01-02

申请号：US18053583

申请日：2022-11-08

Applicant: Infineon Technologies AG

Inventor： Klaus Elian ,  Christoph Steiner ,  Horst Theuss ,  Matthias Eberl ,  Fabian Merbeler

IPC: G06F3/043 ,  G01S15/08

CPC classification number: G01S15/08 ,  G06F3/043

Abstract: An ultrasonic touch sensor includes: a covering having a contact face configured to receive a touch; a first ultrasonic transducer element; a first semiconductor chip comprising the first ultrasonic transducer element; a second ultrasonic transducer element; and an acoustic barrier formed between the first ultrasonic transducer element and the second ultrasonic transducer element.

公开(公告)号：US12157145B2

公开(公告)日：2024-12-03

申请号：US17865504

申请日：2022-07-15

Applicant: Infineon Technologies AG

Inventor： Klaus Elian ,  Matthias Eberl ,  Fabian Merbeler

IPC: B06B1/02 ,  B06B1/06 ,  G01H11/06 ,  H10N30/20

Abstract: A sensor system for attachment to a casing includes at least one sensor element, where the sensor element is configured for detecting an environment property of an environment which, with the sensor system attached to the casing, is situated on the opposite side of the casing with respect to the sensor system. The sensor system also includes an encapsulation layer, where the sensor element is embedded in the encapsulation layer, and where the encapsulation layer has a contact surface for attaching the sensor system to the casing.

公开(公告)号：US11886668B1

公开(公告)日：2024-01-30

申请号：US17938844

申请日：2022-10-07

Applicant: Infineon Technologies AG

Inventor： Matthias Eberl ,  Fabian Merbeler ,  Emanuel Stoicescu

IPC: G06F3/043 ,  G06F3/041

CPC classification number: G06F3/0436 ,  G06F3/0418

Abstract: A touch sensor includes: a transmitter configured to transmit an ultrasonic transmit wave towards a touch structure; a receiver configured to receive an ultrasonic reflected wave produced from the ultrasonic transmit signal being at least partially reflecting by the touch structure; a receiver circuit configured to convert the ultrasonic reflected wave into a measurement signal; the receiver circuit configured to generate an error value representative of a difference between a measured value of the measurement signal and a reference value; a programmable voltage source configured to provide a bias voltage to the transmitter or to the receiver; a controller configured to adjust the bias voltage based on the error value; a measurement circuit configured to measure the DC bias voltage and determine whether a no-touch event or a touch event has occurred at the touch structure based on at least one measurement of the bias voltage.