Patent ID: 8564169

Claim:
An electrostatic induction generation device comprising: a first fixed electrode substrate having a first electret electrode, the first electret electrode having a first electret electrode finger and a second electret electrode finger; a second fixed electrode substrate having a second electret electrode, the second electret electrode having a third electret electrode finger and a fourth electret electrode finger; and a movable electrode substrate having: a movable electrode having a first side and a second side in a direction perpendicular to a movable direction of the movable electrode, the second side being opposed to the first side; a first electrode finger beam having the first side; a second electrode finger beam having the second side; and a first electrode finger and a second electrode finger that are formed from the first electrode finger beam to the second electrode finger beam; a holding frame formed separately from the movable electrode; a pair of electrode support beams connected with the movable electrode and the holding frame, wherein the movable electrode substrate is formed between the first fixed electrode substrate and the second fixed electrode substrate, the movable electrode is opposed to the first electret electrode and the second electret electrode, the first electrode finger is opposed to the first electret electrode finger and the third electret electrode finger, and the second electrode finger is opposed to the second electret electrode finger and the fourth electret electrode finger.