Invention Grant
- Patent Title: Ultrasonic transducer device with through-substrate via
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Application No.: US15345741Application Date: 2016-11-08
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Publication No.: US10335827B2Publication Date: 2019-07-02
- Inventor: Peter B. Johnson , Ira Oaktree Wygant
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Garner; Charles A. Brill; Frank D. Cimino
- Main IPC: H02N1/00
- IPC: H02N1/00 ; B06B1/02 ; A61B8/00

Abstract:
A Capacitive Micromachined Ultrasonic Transducer (CMUT) device includes at least one CMUT cell including a first substrate having a top side including a patterned dielectric layer thereon including a thick and a thin dielectric region. A membrane layer is bonded on the thick dielectric region and over the thin dielectric region to provide a movable membrane over a micro-electro-mechanical system (MEMS) cavity. A through-substrate via (TSV) includes a dielectric liner which extends from a bottom side of the first substrate to a top surface of the membrane layer. A top side metal layer includes a first portion over the TSV, over the movable membrane, and coupling the TSV to the movable membrane. A patterned metal layer is on the bottom side surface of the first substrate including a first patterned layer portion contacting the bottom side of the first substrate lateral to the TSV.
Public/Granted literature
- US20170050217A1 ULTRASONIC TRANSDUCER DEVICE WITH THROUGH-SUBSTRATE VIA Public/Granted day:2017-02-23
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