Invention Grant
US08692441B2 Method for forming an ultrasonic transducer, and associated apparatus
有权
用于形成超声换能器的方法及相关装置
- Patent Title: Method for forming an ultrasonic transducer, and associated apparatus
- Patent Title (中): 用于形成超声换能器的方法及相关装置
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Application No.: US13907046Application Date: 2013-05-31
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Publication No.: US08692441B2Publication Date: 2014-04-08
- Inventor: David Dausch , Scott H. Goodwin
- Applicant: Research Triangle Institute
- Applicant Address: US NC Research Triangle Park
- Assignee: Research Triangle Institute
- Current Assignee: Research Triangle Institute
- Current Assignee Address: US NC Research Triangle Park
- Agency: Womble Carlyle Sandridge & Rice, LLP
- Main IPC: H01L41/047
- IPC: H01L41/047 ; H01L41/053 ; H01L41/107 ; H03H9/15 ; B31D3/00

Abstract:
A method is provided for forming a piezoelectric ultrasonic transducer apparatus having a first electrode deposited on a dielectric layer disposed on a primary substrate. A piezoelectric material is deposited between the first electrode and a second electrode, to form a transducer device. At least the piezoelectric material is patterned such that a portion of the first electrode extends laterally outward therefrom. The primary substrate and the dielectric layer are etched to form a first via extending to the laterally outward portion of the first electrode, and a first conductive material is deposited to substantially fill the first via and form an electrically-conductive engagement with the laterally outward portion of the first electrode. The primary substrate is etched to define a second via extending therethrough, wherein the second via is laterally spaced apart from the first via. An associated method and apparatus are also provided.
Public/Granted literature
- US20130270967A1 METHOD FOR FORMING AN ULTRASONIC TRANSDUCER, AND ASSOCIATED APPARATUS Public/Granted day:2013-10-17
Information query
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