IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0637419
(2000-08-11)
|
우선권정보 |
JP-0227954 (1999-08-11); JP-0227955 (1999-08-11); JP-0052613 (2000-02-28) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
103 인용 특허 :
11 |
초록
▼
An electret capacitor microphone is constituted by a surface conductive diaphragm, a fixed electrode provided opposite to the diaphragm at a regular interval and a solid state device for converting, into an electric signal, a voice given to the diaphragm with a change in an electrostatic capacity be
An electret capacitor microphone is constituted by a surface conductive diaphragm, a fixed electrode provided opposite to the diaphragm at a regular interval and a solid state device for converting, into an electric signal, a voice given to the diaphragm with a change in an electrostatic capacity between the diaphragm and the fixed electrode. The microphone comprises a dielectric casing having a bottomed hollow portion for accommodating the diaphragm, the fixed electrode and the solid state device. Since the casing itself is dielectric, it does not deed to accommodate a special dielectric or a board for the solid state device but can be directly provided in the hollow portion. Therefore, the microphone can be very small-sized and thinned. The hollow portion of the casing has a stepped portion and the diaphragm or the fixed electrode is fixed onto the stepped portion. The hollow portion of the casing has a rectangular cross section and the external shape of the casing is rectangular, the parts can easily be provided in the hollow portion, an unnecessary space can be omitted, and a size can be reduced.
대표청구항
▼
An electret capacitor microphone is constituted by a surface conductive diaphragm, a fixed electrode provided opposite to the diaphragm at a regular interval and a solid state device for converting, into an electric signal, a voice given to the diaphragm with a change in an electrostatic capacity be
An electret capacitor microphone is constituted by a surface conductive diaphragm, a fixed electrode provided opposite to the diaphragm at a regular interval and a solid state device for converting, into an electric signal, a voice given to the diaphragm with a change in an electrostatic capacity between the diaphragm and the fixed electrode. The microphone comprises a dielectric casing having a bottomed hollow portion for accommodating the diaphragm, the fixed electrode and the solid state device. Since the casing itself is dielectric, it does not deed to accommodate a special dielectric or a board for the solid state device but can be directly provided in the hollow portion. Therefore, the microphone can be very small-sized and thinned. The hollow portion of the casing has a stepped portion and the diaphragm or the fixed electrode is fixed onto the stepped portion. The hollow portion of the casing has a rectangular cross section and the external shape of the casing is rectangular, the parts can easily be provided in the hollow portion, an unnecessary space can be omitted, and a size can be reduced. unley et al.; US-4802227, 19890100, Elko et al.; US-4811404, 19890300, Vilmur et al.; US-4833719, 19890500, Carme et al.; US-4837832, 19890600, Fanshel; US-4847897, 19890700, Means; US-4862506, 19890800, Landgarten et al.; US-4878188, 19891000, Ziegler et al.; US-4908855, 19900300, Ohga et al.; US-4910718, 19900300, Horn; US-4910719, 19900300, Thubert; US-4928307, 19900500, Lynn; US-4930156, 19900500, Norris; US-4932063, 19900600, Nakamura; US-4937871, 19900600, Hattori; US-4947356, 19900800, Elliott et al.; US-4951954, 19900800, MacNeill; US-4955055, 19900900, Fujisaki et al.; US-4956867, 19900900, Zarek et al.; US-4959865, 19900900, Stettiner et al.; US-4963071, 19901000, Larwin et al.; US-4965834, 19901000, Miller; US-4977600, 19901200, Ziegler; US-4985925, 19910100, Langberg et al.; US-4991433, 19910200, Warnaka et al.; US-5001763, 19910300, Moseley; US-5010576, 19910400, Hill; US-5018202, 19910500, Takahashi et al.; US-5023002, 19910600, Schweizer et al.; US-5029218, 19910700, Nagayasu; US-5046103, 19910900, Warnaka et al.; US-5052510, 19911000, Gossman; US-5070527, 19911200, Lynn; US-5075694, 19911200, Donnangelo et al.; US-5086385, 19920200, Launey et al.; US-5086415, 19920200, Takahashi et al.; US-5091954, 19920200, Sasaki et al
※ AI-Helper는 부적절한 답변을 할 수 있습니다.