Invention Grant
- Patent Title: Imaging devices having piezoelectric transducers
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Application No.: US15820319Application Date: 2017-11-21
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Publication No.: US11039814B2Publication Date: 2021-06-22
- Inventor: Sandeep Akkaraju , Haesung Kwon , Yusuf Haque , Janusz Bryzek
- Applicant: EXO IMAGING INC.
- Applicant Address: US CA Oakland
- Assignee: EXO IMAGING INC.
- Current Assignee: EXO IMAGING INC.
- Current Assignee Address: US CA Oakland
- Agency: Wilson Sonsini Goodrich & Rosati
- Main IPC: A61B8/00
- IPC: A61B8/00 ; B06B1/06 ; G01S7/52 ; H01L41/09 ; A61B8/08 ; A61B8/14 ; B06B1/02 ; G01S7/521 ; G01S15/89 ; H01L41/053 ; H01L41/08

Abstract:
An imaging system includes: a transceiver cell for generating a pressure wave and converting an external pressure wave into an electrical signal; and a control unit for controlling an operation of the transceiver cell. The transceiver cell includes: a substrate; at least one membrane suspending from the substrate; and a plurality of transducer elements mounted on the at least one membrane. Each of the plurality of transducer elements has a bottom electrode, a piezoelectric layer on bottom electrode, and at least one top electrode on the piezoelectric layer. Each of the plurality of transducer element generates a bending moment in response to applying an electrical potential across the bottom electrode and the at least one top electrode and develops an electrical charge in response to a bending moment due to the external pressure wave.
Public/Granted literature
- US20180153512A1 IMAGING DEVICES HAVING PIEZOELECTRIC TRANSDUCERS Public/Granted day:2018-06-07
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