ACOUSTIC GENERATOR, ACOUSTIC GENERATION APPARATUS, PORTABLE TERMINAL, AND ELECTRONIC APPARATUS

Title:

ACOUSTIC GENERATOR, ACOUSTIC GENERATION APPARATUS, PORTABLE TERMINAL, AND ELECTRONIC APPARATUS

Document Type and Number:

WIPO Patent Application WO/2015/125370

Kind Code:

A1

Abstract:

[Problem] To provide an acoustic generator, a portable terminal, and an electronic apparatus, which have improved sound qualities. [Solution] An acoustic generator (1) of the present invention is provided with a piezoelectric element (11) having a piezoelectric body (11a), and a diaphragm (12) bonded to the piezoelectric element (11) with a bonding material therebetween, said acoustic generator having areas having different distances between the diaphragm (12) and the piezoelectric body (11a). Since this configuration achieves clear and sharp sound qualities, and has effects of increasing sound pressure, the acoustic generator having improved sound qualities can be achieved.

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Inventors:

MATSUOKA TOHRU (JP)

Application Number:

PCT/JP2014/081663

Publication Date:

August 27, 2015

Filing Date:

November 29, 2014

Export Citation:

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Assignee:

KYOCERA CORP (JP)

International Classes:

H04M1/03; H04R17/00

Foreign References:

JP5225518B1	2013-07-03
JPH0177096U	1989-05-24
JPH02111997U	1990-09-07
JP2012110018A	2012-06-07

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