Invention Grant
- Patent Title: Microelectromechanical device, method for manufacturing a microelectromechanical device, and method for manufacturing a system on chip using a CMOS process
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Application No.: US16861669Application Date: 2020-04-29
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Publication No.: US11078072B2Publication Date: 2021-08-03
- Inventor: Thoralf Kautzsch , Steffen Bieselt , Heiko Froehlich , Andre Roeth , Maik Stegemann , Mirko Vogt
- Applicant: Infineon Technologies Dresden GmbH & Co. KG
- Applicant Address: DE Dresden
- Assignee: Infineon Technologies Dresden GmbH & Co. KG
- Current Assignee: Infineon Technologies Dresden GmbH & Co. KG
- Current Assignee Address: DE Dresden
- Agency: Design IP
- Priority: DE102017206412.9 20170413
- Main IPC: H01L21/00
- IPC: H01L21/00 ; B81B7/02 ; B81B5/00 ; B81C1/00

Abstract:
A method for manufacturing a microelectromechanical systems (MEMS) device, includes forming a cavity in a bulk semiconductor substrate; defining a movably suspended mass in the bulk semiconductor substrate by one or more trenches extending from a main surface area of the bulk semiconductor substrate to the cavity; arranging a cap structure on the main surface area of the bulk semiconductor substrate; and forming a capacitive structure. Forming the capacitive structure includes arranging a first electrode structure on the movably suspended mass; and providing a second electrode structure at the cap structure such that the first electrode structure and the second electrode structure are spaced apart in a direction perpendicular to the main surface area of the bulk semiconductor substrate.
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