Patent ID: 9711711
Date: 2017-07-18
CPC Classifications: H01L,H02N,Y10T

Claim:
1. A piezoelectric energy harvester device, comprising: a rectangular substrate comprising a cantilevered structure having a rectangular proof mass portion defined by holes through the substrate along three sides of the proof mass portion and supported for free pivotal movement relative to a rectangular anchor portion by a hinge portion defined by a thinned portion of the substrate along a fourth side of the proof mass portion at a juncture of the proof mass portion with the anchor portion; elongated strips of piezoelectric energy harvesting units formed in side-by-side spaced positions on the hinge portion, the elongated strips being aligned parallel to or perpendicular to a stress direction of the free pivotal movement; contact pads formed on the substrate in spaced positions along sides of the anchor portion; and lead lines formed on the substrate respectively connecting the elongated strips with the contact pads.