Invention Grant
- Patent Title: Pressure sensor device and manufacturing method
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Application No.: US15647360Application Date: 2017-07-12
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Publication No.: US10386255B2Publication Date: 2019-08-20
- Inventor: Thoralf Kautzsch , Heiko Froehlich , Marco Haubold , Andre Roeth , Maik Stegemann , Mirko Vogt
- Applicant: Infineon Technologies Dresden GmbH
- Applicant Address: DE Dresden
- Assignee: Infineon Technologies Dresden GmbH
- Current Assignee: Infineon Technologies Dresden GmbH
- Current Assignee Address: DE Dresden
- Agency: Schiff Hardin LLP
- Priority: DE102016212693 20160712
- Main IPC: G01L9/00
- IPC: G01L9/00 ; G01L19/06 ; G01L19/14

Abstract:
A manufacturing method includes providing a semiconductor substrate having a pressure sensor structure; and forming, during a BEOL process (BEOL=back-end-of-line), a metal-insulator-stack arrangement on the semiconductor substrate, wherein the metal-insulator-stack arrangement is formed to comprise (1) a cavity adjacent to the pressure sensor structure and extending over the pressure sensor structure, and (2) a pressure port through the metal-insulator-stack arrangement for providing a fluidic connection between the cavity and an environmental atmosphere, wherein the pressure port has a cross-sectional area, which is smaller than 10% of a footprint area of the pressure sensor structure within the cavity.
Public/Granted literature
- US20180017456A1 PRESSURE SENSOR DEVICE AND MANUFACTURING METHOD Public/Granted day:2018-01-18
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