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US 8,897,473 B2Granted
Acoustic generator
AssigneeKYOCERA Corporation
InventorsShuichi Fukuoka, Noriyuki Kushima, Hiroyuki Kawamura, Hiroshi Ninomiya
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Abstract
Provided is an acoustic generator which has a high sound pressure at ultrahigh frequencies and which can suppress occurrence of large peak dips. An acoustic generator includes a film, a frame member disposed on an outer peripheral edge of the film, a piezoelectric element disposed on the film and inside the frame member, and a resin layer filled inside the frame member so as to cover the piezoelectric element.
Claims13
An acoustic generator, comprising:
- a film;
- a frame member disposed on an outer peripheral edge of the film;
- a plurality of piezoelectric elements disposed on the film and inside the frame member;
- and
- a resin layer disposed inside the frame member so as to cover the piezoelectrics elements,
- wherein a total thickness of a first piezoelectric element, a part of the film on which the first piezoelectric element is disposed, and a part of the resin layer on which the first piezoelectric element is disposed, is different from a total thickness of a second piezoelectric element, a part of the film on which the second piezoelectric element is disposed, and a part of the resin layer on which the second piezoelectric element is disposed.
3 more elements
Dependencies are inferred from the claim text.