Electronic device with electret electro-acoustic transducer

(19)

(11)

EP 2 369 855 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	04.04.2012 Bulletin 2012/14

(43)	Date of publication A2:
	28.09.2011 Bulletin 2011/39

(21)	Application number: 11162045.6

(22)	Date of filing: 02.09.2009

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International Patent Classification (IPC):

H04R 19/01^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

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Priority:

31.10.2008 TW 097141921

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	09169282.2 / 2182737

(71)	Applicant: HTC Corporation
	Taoyuan County 330 (TW)

(72)	Inventors:
	Cheng, Yi Tsung Taoyuan City (TW) Lee, Fang Ching Taoyuan City (TW) Hsieh, Chih Chao Taoyuan City (TW)

(74)	Representative: Kirschner, Klaus Dieter et al
	Puschmann Borchert Bardehle Patentanwälte Partnerschaft Bajuwarenring 21 82041 Oberhaching 82041 Oberhaching (DE)

(54)	Electronic device with electret electro-acoustic transducer

(57) An electronic device is provided. The electronic device includes a housing and an electro-acoustic transducer disposed on the inner surface of the housing. The electro-acoustic transducer includes an electret diaphragm, a conductive layer and at least one spacer. The conductive layer is formed on the inner surface of the housing. The electret diaphragm is stacked on the conductive layer and has a film body and an electrode layer. The film body has static charges and the electrode layer is formed on the film body. The spacer is positioned between the electret diaphragm and the conductive layer to keep a predetermined distance between the electret diaphragm and the conductive layer.

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