Patent ID: 6437965
Filing Date: 2002-08-20
Classification: B81B,H01G

Abstract:
An electronic device comprising:a substrate; and a micro-electromechanical system (MEMS) capacitor on said substrate and having -a plurality of selectable capacitance values, said MEMS capacitor comprising a lower capacitor electrode on said substrate, and a movable bridge comprising end portions connected to said substrate laterally adjacent said lower capacitor electrode, a conductive medial portion between said end portions defining an upper capacitor electrode suspended above said lower capacitor electrode and being movable between an upper position and a lower position by an electrostatic force generated between said lower and upper capacitor electrodes, the upper and lower positions providing respective low and high selectable capacitance values, said movable bridge further comprising at least one travel limiting portion between said end portions for engaging adjacent substrate portions to keep said upper capacitor electrode in a predetermined spaced relation from said lower capacitor electrode when in the lower position.