Title:
電子装置及び電気音響変換器
Document Type and Number:
Japanese Patent JP5099605
Kind Code:
B2
Abstract:
The invention provides an electronic device and an electro-acoustic transducer thereof. The electronic device includes a main body and an electro-acoustic transducer carried by the main body. The electro-acoustic transducer includes a first electret diaphragm, a second electret diaphragm and a plate. The first electret diaphragm generates vibrations according to a first electrical signal and the second electret diaphragm generates vibrations according to a second electrical signal. The plate includes a plurality of holes formed thereon and is disposed between the first electret diaphragm and the second electret diaphragm. Additionally, the electronic device further includes a decorative layer formed on the first or the second electret diaphragm.
Inventors:
Lee Fengqing
Chung Zhong
Chung Zhong
Application Number:
JP2009158160A
Publication Date:
December 19, 2012
Filing Date:
July 02, 2009
Export Citation:
Assignee:
Hongda International Electronics Co., Ltd.
International Classes:
H04R19/02; H04R19/01
Domestic Patent References:
| JP51032528U | ||||
| JP53006637U | ||||
| JP2006174125A | ||||
| JP58120399A | ||||
| JP2006254391A | ||||
| JP2004186732A | ||||
| JP2007104521A | ||||
| JP2007295059A | ||||
| JP52006522A | ||||
| JP54127317A | ||||
| JP50090320A | ||||
| JP64071400A |
Attorney, Agent or Firm:
Mamoru Ushiki
Masayoshi Yoshida
Shimizu Sakaematsu
Masayoshi Yoshida
Shimizu Sakaematsu