{
  "$type": "site.standard.document",
  "description": "A piezoelectric device includes: a substrate having a vibrating region and a non-vibrating region that surrounds the vibrating region; a first electrode provided across the vibrating region and the non-vibrating region; a second electrode disposed in the vibrating region to be separate from the…",
  "path": "/patents/1382428",
  "publishedAt": "2026-05-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H10N30/871",
    "SEIKO EPSON CORPORATION"
  ],
  "textContent": "A piezoelectric device includes: a substrate having a vibrating region and a non-vibrating region that surrounds the vibrating region; a first electrode provided across the vibrating region and the non-vibrating region; a second electrode disposed in the vibrating region to be separate from the first electrode; a piezoelectric body provided across the substrate, the first electrode, and the second electrode; and a third electrode that is disposed on the piezoelectric body and overlaps with at least the first electrode and the second electrode in the vibrating region when viewed in a thickness direction of the substrate.",
  "title": "PIEZOELECTRIC DEVICE AND ULTRASONIC DEVICE"
}