公开(公告)号：US20190005300A1

公开(公告)日：2019-01-03

申请号：US15636479

申请日：2017-06-28

Applicant: InvenSense, Inc.

Inventor： Bruno W. GARLEPP ,  James Christian SALVIA ,  Michael DANEMAN ,  Nikhil APTE ,  Julius Ming-Lin TSAI

IPC: G06K9/00 ,  B06B1/06 ,  G10K11/34

Abstract: A method for generating a composite image having an increased image pixel density by an array of ultrasonic transducers having a given spatial density is provided. The method comprises capturing a first set of pixels at an ultrasonic sensor using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of ultrasonic transducers of the ultrasonic sensor. The method further comprises capturing a second set of pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of ultrasonic transducers. The first beamforming pattern and the second beamforming pattern are different. Pixels of the second set of pixels correspond to positions between pixels of the first set of pixels. The method additionally comprises combining the first and second sets of pixels to form the composite image. An electronic device and a method of generating an image of a fingerprint are also provided.

公开(公告)号：US20170322290A1

公开(公告)日：2017-11-09

申请号：US15205743

申请日：2016-07-08

Applicant: InvenSense, Inc.

Inventor： Eldwin NG ,  Julius Ming-Lin TSAI ,  Nikhil APTE

IPC: G01S7/521 ,  A61B5/1172 ,  A61B8/00 ,  G01S15/89

CPC classification number: G01S7/521 ,  A61B5/1172 ,  A61B8/4483 ,  B06B1/0622 ,  B06B1/0688 ,  G01S15/89 ,  H01L41/047 ,  H01L41/0973

Abstract: A Piezoelectric Micromachined Ultrasonic Transducer (PMUT) device is provided. The PMUT includes a substrate and an edge support structure connected to the substrate. A membrane is connected to the edge support structure such that a cavity is defined between the membrane and the substrate, where the membrane is configured to allow movement at ultrasonic frequencies. The membrane includes a piezoelectric layer and first and second electrodes coupled to opposing sides of the piezoelectric layer. An interior support structure is disposed within the cavity and connected to the substrate and the membrane.