Invention Application
- Patent Title: CIRCUIT AND METHOD FOR DRIVING ELECTROSTATIC MEMS
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Application No.: US15071096Application Date: 2016-03-15
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Publication No.: US20170269350A1Publication Date: 2017-09-21
- Inventor: Hyung KYU Lee , Alexander Payne , Michael Yeung
- Applicant: SILICON LIGHT MACHINES CORPORATION
- Applicant Address: US CA Sunnyvale
- Assignee: SILICON LIGHT MACHINES CORPORATION
- Current Assignee: SILICON LIGHT MACHINES CORPORATION
- Current Assignee Address: US CA Sunnyvale
- Main IPC: G02B26/00
- IPC: G02B26/00 ; H02N1/00

Abstract:
A circuit and method for driving electrostatic microelectomechanical systems (MEMS) are provided. In one embodiment, the circuit includes a first electrode in a movable element of the MEMS and a second electrode on a surface of a substrate of the MEMS over which the movable element is suspended, and a driver electrically coupled to the first and the second electrodes. The driver supplies a voltage differential between the first and second electrodes to vary an electrostatic force between the electrodes thereby moving the movable element. The driver is configured to supply a voltage pulse having a leading edge in which a first voltage intermediate between an initial, minimum voltage and a maximum voltage is maintained for a first time before rising to the maximum voltage timed to dampen oscillations of the movable element. Other embodiments are also described.
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