公开(公告)号：WO2022204629A1

公开(公告)日：2022-09-29

申请号：PCT/US2022/070517

申请日：2022-02-03

Applicant: QUALCOMM INCORPORATED

Inventor： HERRERA, Bernard ,  STROHMANN, Jessica Liu ,  XU, Changting ,  PANCHAWAGH, Hrishikesh Vijaykumar ,  DJORDJEV, Kostadin Dimitrov

IPC: H04R7/04 ,  H04R7/10 ,  H04R17/00 ,  G06F3/043 ,  H01L41/09

Abstract: Some disclosed devices may include a display stack, a cover layer proximate a first side of the display stack and a segmented transducer array proximate a second side of the display stack. The segmented transducer array may include a plurality of separate transducer segments. Each of the separate transducer segments may include a piezoelectric layer and a thin-film transistor (TFT) layer. The separate transducer segments may include transmitter transducer segments and receiver transducer segments. In some examples, a spacing between at least a first plurality of the transmitter transducer segments may correspond to a display stack and cover layer oscillation mode frequency in a range from 20 Hz to 20 kHz, from 15 kHz to 200 kHz or from 20 kHz to 400 kHz.

公开(公告)号：WO2021216383A1

公开(公告)日：2021-10-28

申请号：PCT/US2021/027840

申请日：2021-04-16

Applicant: QUALCOMM INCORPORATED

Inventor： LIANG, Yue ,  LU, Yipeng ,  PANCHAWAGH, Hrishikesh Vijaykumar ,  STROHMANN, Jessica Liu ,  XU, Changting

IPC: G06F3/041 ,  G06F3/043 ,  G06K9/00

Abstract: An example method of operation may include detecting a user touch in a first area based upon sensor data from one or more sensors of a first type, waking up one or more sensors of a second type configured to measure across some or all of the first area in response to the detecting, obtaining additional sensor data from the one or more sensors of the second type, and determining a location associated with the user touch based in part upon the sensor data from the one or more sensors of the second type.

公开(公告)号：WO2022039844A1

公开(公告)日：2022-02-24

申请号：PCT/US2021/040020

申请日：2021-06-30

Applicant: QUALCOMM INCORPORATED

Inventor： XU, Changting ,  YOON, Soon Joon ,  PEREZ SAAIBI, Camilo ,  PANCHAWAGH, Hrishikesh Vijaykumar ,  DJORDJEV, Kostadin Dimitrov

IPC: G01S15/18 ,  G01S7/52 ,  G01S15/89 ,  G06K9/00

Abstract: Some disclosed methods involve acquiring, via an ultrasonic sensor system, first (reference) ultrasonic signals at a first time and acquiring second ultrasonic signals via the ultrasonic sensor system at a second time. Such methods may involve determining, based at least in part on a comparison of the first ultrasonic signals and the second ultrasonic signals, whether one or more layers reside on the cover glass at the second time. If it is determined that the one or more layers reside on the cover glass at the second time, some methods may involve determining one or more signal characteristics corresponding to properties of the one or more layers and determining, based at least in part on the one or more properties, whether the one or more layers are compatible with the ultrasonic sensor system. If so, the method may involve calibrating the ultrasonic sensor system.