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US 2007/0177747 A1Published application
Piezoelectric acoustic element, acoustic device, and portable terminal device
AssigneeNEC Corporation
InventorsYasuharu Onishi, Yasuhiro Sasaki, Nozomi Toki
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Abstract
A piezoelectric acoustic element 1 of the present invention comprising a hollow casing 5 having a opening 3, a piezoelectric element 7 that is disposed in said casing 5 and bends when a voltage is applied thereto, and diaphragm 8 provided at the opening 3 of said casing 5; wherein said piezoelectric element 7 and said diaphragm 8 are joined through a vibration transmitting member 9.
Claims11
A piezoelectric acoustic element using a piezoelectric element as a vibration source, comprising:
- a hollow casing having at least one opening;
- a piezoelectric element that is disposed in said casing and bends when a voltage is applied thereto;
- and
- a diaphragm provided at the opening of said casing;
- wherein said piezoelectric element and said diaphragm are joined through a vibration transmitting member.
2 more elements
Dependencies are inferred from the claim text.