Patent · US Expired

Mechanism to prevent actuation charging in microelectromechanical actuators

US7214995B2 · kind B2 · utility

8Cited by
0References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 30, 2004
Grant dateMay 8, 2007
Priority date
Expiry dateJul 26, 2025

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01H2059/0018
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

According to one embodiment a microelectromechanical (MEMS) switch is disclosed. The MEMS switch includes a top movable electrode, and an actutaion electrode with an undoped polysilicon stopper region to contact the top movable electrode when an actuation current is applied. The undoped polysilicon stopper region prevents actuation charging that accumulates over time in a unipolar actuation condition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.