Patent ID: 8910523

Claim:
A capacitive accelerometer comprising: a substrate; and a first semiconductor layer disposed on the substrate, the first semiconductor layer comprising: a first mass; two first anchors located on at least one side of the first mass corresponding to a first axis; two first elastic members, each first elastic member being connected to the first mass and the corresponding first anchor in a manner of bending back and forth perpendicular to the first axis, for making the first mass move elastically along the first axis when a force is applied to the first mass in the first axis, and the bending times of the two first elastic members being different from each other; at least one first combo capacitor set connected to at least one side of the first mass corresponding to a second axis; at least one second anchor located on at least one side of the first mass corresponding to the second axis; a second elastic member connected to the first mass and the second anchor in a manner of bending back and forth perpendicular to the second axis, for making the first mass move elastically along the second axis when a force is applied to the first mass in the second axis; and at least one second combo capacitor set connected to at least one side of the first mass corresponding to the first axis; wherein the first axis is perpendicular to the second axis.