公开(公告)号：US20240094850A1

公开(公告)日：2024-03-21

申请号：US18159817

申请日：2023-01-26

Applicant: Infineon Technologies AG

Inventor： Emanuel STOICESCU ,  Matthias EBERL ,  Costin BATRINU ,  Klaus ELIAN

IPC: G06F3/041 ,  G06F3/043 ,  G06F3/044

CPC classification number: G06F3/04186 ,  G06F3/043 ,  G06F3/044 ,  G06F2203/04105

Abstract: A touch sensor includes a touch structure including a touch interface and an inner interface arranged opposite to the touch interface; a capacitive ultrasonic transmitter arranged inside an enclosed interior volume and configured to transmit an ultrasonic transmit wave towards the touch structure; a capacitive ultrasonic receiver arranged inside the enclosed interior volume and configured to receive at least one ultrasonic reflected wave produced from the ultrasonic transmit wave via internal reflection; a coupling medium that fills an area between the inner interface and the capacitive ultrasonic receiver, wherein an external force applied to the touch interface is configured to impart an internal pressure onto the capacitive ultrasonic receiver through the coupling medium; and a sensor circuit configured to convert the at least one ultrasonic reflected wave into a measurement signal and detect the external force based on the measurement signal.

公开(公告)号：US20210310890A1

公开(公告)日：2021-10-07

申请号：US17348940

申请日：2021-06-16

Applicant: Infineon Technologies AG

Inventor： Emanuel STOICESCU ,  Matthias BOEHM ,  Stefan JAHN ,  Erhard LANDGRAF ,  Michael WEBER ,  Janis WEIDENAUER

IPC: G01L19/14 ,  H01L23/053 ,  G01L19/00 ,  H01L21/56 ,  H01L23/24 ,  H01L23/495 ,  H01L23/60 ,  H01L23/00

Abstract: A pressure sensor device includes a semiconductor die having a die surface that includes a pressure sensitive area; and a bond wire bonded to a first peripheral region of the die surface and extends over the die surface to a second peripheral region of the die surface, wherein the pressure sensitive area is interposed between the second peripheral region and the first peripheral region, wherein the bond wire comprises a crossing portion that overlaps an area of the die surface, and wherein the crossing portion extends over the pressure sensitive area that is interposed between the first and the second peripheral regions.

公开(公告)号：US20240264703A1

公开(公告)日：2024-08-08

申请号：US18164152

申请日：2023-02-03

Applicant: Infineon Technologies AG

Inventor： Emanuel STOICESCU ,  Erhard LANDGRAF

IPC: G06F3/043 ,  B06B3/04 ,  G06F3/041

CPC classification number: G06F3/0433 ,  B06B3/04 ,  G06F3/0418 ,  B06B2201/40

Abstract: An ultrasonic touch sensor includes a touch structure configured to receive a touch; a transmitter arrangement configured to transmit one or more ultrasonic transmit waves toward the touch structure; a receiver arrangement configured to receive ultrasonic reflected waves produced by reflections of the one or more ultrasonic transmit waves and generate a plurality of measurement signals representative of the ultrasonic reflected waves; and a measurement circuit configured to measure a degree of variation of a plurality of measurement signals, compare the degree of variation with a detection threshold, and determine whether a no-touch event or a touch event has occurred at the touch structure based on whether the degree of variation satisfies the detection threshold.

公开(公告)号：US20240192809A1

公开(公告)日：2024-06-13

申请号：US18469010

申请日：2023-09-18

Applicant: Infineon Technologies AG

Inventor： Emanuel STOICESCU ,  Matthias EBERL ,  Mohanraj SOUNDARA PANDIAN ,  Klaus ELIAN ,  Costin BATRINU

IPC: G06F3/043 ,  G06F3/041

CPC classification number: G06F3/043 ,  G06F3/0416

Abstract: An ultrasonic touch sensor includes a touch structure having a touch surface with a plurality of sensitive areas, a pixel array of capacitive ultrasonic transducers, and a sensor circuit. Each pixel includes a respective ultrasonic transmitter and a respective ultrasonic receiver and is configured to monitor for a touch at a respective first sensitive area and at a respective second sensitive area. Moreover, each pixel is configured to generate a measurement signal that is representative of a first respective ultrasonic reflected wave reflected by the touch interface at the respective first sensitive area or that is representative of a second respective ultrasonic reflected wave reflected by the touch interface at the respective second sensitive area. The sensor circuit is configured to determine whether the measurement signal of a respective pixel corresponds to the respective first sensitive area or to the respective second sensitive area associated with the respective pixel.

公开(公告)号：US20190113412A1

公开(公告)日：2019-04-18

申请号：US16159918

申请日：2018-10-15

Applicant: Infineon Technologies AG

Inventor： Emanuel STOICESCU ,  Matthias BOEHM ,  Stefan JAHN ,  Erhard LANDGRAF ,  Michael WEBER ,  Janis WEIDENAUER

IPC: G01L19/14 ,  G01L19/00 ,  H01L21/56 ,  H01L23/24 ,  H01L23/495 ,  H01L23/60 ,  H01L23/00

Abstract: A pressure sensor device includes a semiconductor die of the pressure sensor device and a bond wire of the pressure sensor device. A maximal vertical distance between a part of the bond wire and the semiconductor die is larger than a minimal vertical distance between the semiconductor die and a surface of a gel covering the semiconductor die.

公开(公告)号：US20240393906A1

公开(公告)日：2024-11-28

申请号：US18790099

申请日：2024-07-31

Applicant: Infineon Technologies AG

Inventor： Costin BATRINU ,  Emanuel STOICESCU ,  Gheorghe-Iulian CHIVU ,  Victor-Valentin MOCANU

IPC: G06F3/043 ,  G06F3/041

Abstract: An ultrasonic touch sensor includes a touch structure including a touch surface configured to receive a touch, a signal generator configured to generate an excitation, a capacitive ultrasonic transmitter configured to transmit an ultrasonic transmit wave toward the touch structure based on the excitation signal while the touch surface is submerged under the water, a capacitive ultrasonic receiver configured to receive an ultrasonic reflected wave produced by a reflection of the ultrasonic transmit wave at the touch structure while the touch surface is submerged under the water and generate a measurement signal representative of the ultrasonic reflected wave, and a measurement circuit configured to perform a comparison based on the measurement signal and a threshold, and determine whether a no-touch event or a touch event has occurred at the touch surface while the touch surface is submerged under the water based on whether the measurement signal satisfies the threshold.

公开(公告)号：US20240359212A1

公开(公告)日：2024-10-31

申请号：US18638045

申请日：2024-04-17

Applicant: Infineon Technologies AG

Inventor： Klaus ELIAN ,  Daniel OBERMEIER ,  Emanuel STOICESCU

IPC: B06B1/02 ,  B06B1/06

CPC classification number: B06B1/0292 ,  B06B1/0207 ,  B06B1/0622 ,  B06B2201/51 ,  B06B2201/55

Abstract: An ultrasonic device is provided. The ultrasonic device includes at least one micromachined ultrasonic transducer (MUT) and processing circuitry electrically coupled to the at least one MUT. The at least one MUT and the processing circuitry are packed in an embedded wafer level ball grid array (eWLB) package. An acoustic coupling medium for acoustic coupling of the at least one MUT to an external application surface is formed on the at least one MUT.

公开(公告)号：US20240184407A1

公开(公告)日：2024-06-06

申请号：US18468999

申请日：2023-09-18

Applicant: Infineon Technologies AG

Inventor： Costin BATRINU ,  Gheorghe-Iulian CHIVU ,  Emanuel STOICESCU

IPC: G06F3/043

CPC classification number: G06F3/0436 ,  G06F2203/04107

Abstract: An ultrasonic touch sensor includes a touch structure configured to receive a touch; a transmitter configured to transmit an ultrasonic transmit wave toward the touch structure; a receiver configured to receive ultrasonic reflected waves produced by a plurality of reflections of the ultrasonic transmit wave and generate a measurement signal representative of the ultrasonic reflected waves; and a measurement circuit configured to: acquire a first plurality of digital samples of the measurement signal during a first observation window that corresponds to a first ultrasonic reflected wave produced by a reflection of the ultrasonic transmit wave at the touch interface, acquire a second plurality of digital samples of the measurement signal during a second observation window that is subsequent in time to the first observation window, and determine whether a no-touch event or a touch event has occurred based on the first and the second plurality of digital samples.

公开(公告)号：US20240184406A1

公开(公告)日：2024-06-06

申请号：US18469019

申请日：2023-09-18

Applicant: Infineon Technologies AG

Inventor： Costin BATRINU ,  Emanuel STOICESCU ,  Gheorghe-Iulian CHIVU ,  Victor-Valentin MOCANU

IPC: G06F3/043 ,  G06F3/041

CPC classification number: G06F3/043 ,  G06F3/0416

Abstract: An ultrasonic touch sensor includes a touch structure including a touch surface configured to receive a touch, a signal generator configured to generate an excitation, a capacitive ultrasonic transmitter configured to transmit an ultrasonic transmit wave toward the touch structure based on the excitation signal while the touch surface is submerged under the water, a capacitive ultrasonic receiver configured to receive an ultrasonic reflected wave produced by a reflection of the ultrasonic transmit wave at the touch structure while the touch surface is submerged under the water and generate a measurement signal representative of the ultrasonic reflected wave, and a measurement circuit configured to perform a comparison based on the measurement signal and a threshold, and determine whether a no-touch event or a touch event has occurred at the touch surface while the touch surface is submerged under the water based on whether the measurement signal satisfies the threshold.

公开(公告)号：US20190250059A1

公开(公告)日：2019-08-15

申请号：US16271090

申请日：2019-02-08

Applicant: Infineon Technologies AG

Inventor： Victor POPESCU-STROE ,  Emanuel STOICESCU ,  Matthias BOEHM ,  Constantin CRISU ,  Uwe FAKESCH ,  Stefan JAHN ,  Erhard LANDGRAF ,  Janis WEIDENAUER ,  Bernhard WINKLER

IPC: G01L27/00 ,  G01L19/04

CPC classification number: G01L27/005 ,  G01L19/04

Abstract: Examples provide for an apparatus, method, and computer program for comparing the output of sensor cells in an arrangement of sensor cells in an area A, including a set of at least two measurement units. A measurement unit includes at least two sensor cells, wherein at least one sensor cell of at least one measurement unit includes a sensitive sensor cell, which is sensitive with respect to a measured quantity. The sensor cells are intermixed with each other. The apparatus further includes means for selecting output signals of sensor cells of the arrangement and means for determining a measured quantity or determining an intact sensor cell by comparing output signals of different measurement units.