Invention Grant
- Patent Title: Staggered torsional electrostatic combdrive and method of forming same
- Patent Title (中): 交错扭转静电梳齿及其形成方法
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Application No.: US10076296Application Date: 2002-02-13
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Publication No.: US06758983B2Publication Date: 2004-07-06
- Inventor: Robert A. Conant , Jocelyn T. Nee , Kam-Yin Lau , Richard S. Muller
- Applicant: Robert A. Conant , Jocelyn T. Nee , Kam-Yin Lau , Richard S. Muller
- Main IPC: H01L2100
- IPC: H01L2100

Abstract:
A staggered torsional electrostatic combdrive includes a stationary combteeth assembly and a moving combteeth assembly with a mirror and a torsional hinge. The moving combteeth assembly is positioned entirely above the stationary combteeth assembly by a predetermined vertical displacement during a combdrive resting state. A method of fabricating the staggered torsional electrostatic combdrive includes the step of deep trench etching a stationary combteeth assembly in a first wafer. A second wafer is bonded to the first wafer to form a sandwich including the first wafer, an oxide layer, and the second wafer. A moving combteeth assembly is formed in the second wafer. The moving combteeth assembly includes a mirror and a torsional hinge. The moving combteeth assembly is separated from the first wafer by the oxide layer. The oxide layer is subsequently removed to release the staggered torsional electrostatic combdrive.
Public/Granted literature
- US20030019832A1 Staggered torsional electrostatic combdrive and method of forming same Public/Granted day:2003-01-30
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