Patent ID: 9625488
Date: 2017-04-18
CPC Classifications: B81C,G01P

Claim:
1. A preparation method for a variable area capacitive lateral acceleration sensor, wherein said method for preparing the variable area capacitive lateral acceleration sensor at least including the steps of: forming a plurality of first bar structure electrodes at recesses on a surface of a first substrate; forming a plurality of second bar structure electrodes at recesses on an upper surface and a lower surface of a second substrate; bonding the first substrate and a second substrate into a first bonded structure, causing the plurality of first bar structure electrodes on the first substrate and a plurality of second bar structure electrodes on the one surface of the second substrate to form capacitor structure, respectively, and the first substrate and the second substrate are electrically isolated; forming a movable seismic mass structure, a elastic beam structure and a anti-overloading structure on the second substrate of the bonded structure, and causing the plurality of the second bar structure electrodes to be positioned on the upper surface and the lower surface of the movable seismic mass structure, respectively; forming a plurality of third bar structure electrodes at recesses on a third substrate; bonding the third substrate and the second substrate where the movable seismic mass structure has been formed into a second bonded structure, causing the plurality of third bar structure electrodes on the third substrate and a plurality of second bar structure electrodes on the other surface of the second substrate to form capacitor structure, respectively, and the third substrate and the second substrate are electrically isolated; forming electrode lead via-holes at the first substrate or the third substrate of the second bonded structure, and preparing electrodes.