MEMS device having a metallization structure embedded in a dielectric structure with laterally offset sidewalls of a first portion and a second portion

MEMS device having a metallization structure embedded in a dielectric structure with laterally offset sidewalls of a first portion and a second portion

A microelectromechanical system (MEMS) structure and method of forming the MEMS device, including forming a first metallization structure over a complementary metal-oxide-semiconductor (CMOS) wafer, where the first metallization structure includes a first sacrificial oxide layer and a first metal co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Lin, Hung-Hua, Peng, Jung-Huei, Liu, Ping-Yin, Wu, Chang-Ming, Yu, Chung-Yi
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES
MICROSTRUCTURAL TECHNOLOGY
PERFORMING OPERATIONS
PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTUREOR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
SEMICONDUCTOR DEVICES
TRANSPORTING
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Zusammenfassung:A microelectromechanical system (MEMS) structure and method of forming the MEMS device, including forming a first metallization structure over a complementary metal-oxide-semiconductor (CMOS) wafer, where the first metallization structure includes a first sacrificial oxide layer and a first metal contact pad. A second metallization structure is formed over a MEMS wafer, where the second metallization structure includes a second sacrificial oxide layer and a second metal contact pad. The first metallization structure and second metallization structure are then bonded together. After the first metallization structure and second metallization structure are bonded together, patterning and etching the MEMS wafer to form a MEMS element over the second sacrificial oxide layer. After the MEMS element is formed, removing the first sacrificial oxide layer and second sacrificial oxide layer to allow the MEMS element to move freely about an axis.