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Method for integrating microelectromechanical devices with electronic circuitry

Patent ·
OSTI ID:871797

A method for integrating one or more microelectromechanical (MEM) devices with electronic circuitry. The method comprises the steps of forming each MEM device within a cavity below a device surface of the substrate; encapsulating the MEM device prior to forming electronic circuitry on the substrate; and releasing the MEM device for operation after fabrication of the electronic circuitry. Planarization of the encapsulated MEM device prior to formation of the electronic circuitry allows the use of standard processing steps for fabrication of the electronic circuitry.

Research Organization:
SANDIA CORP
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
US 5798283
OSTI ID:
871797
Country of Publication:
United States
Language:
English

References (3)

Polysilicon integrated microsystems: technologies and applications journal August 1996
A smart accelerometer with on-chip electronics fabricated by a commercial CMOS process journal March 1992
A surface micromachined silicon accelerometer with on-chip detection circuitry journal October 1994