发明公开
- 专利标题： ACOUSTICAL TRANSDUCER WITH REDUCED PARASITIC CAPACITANCE AND METHOD OF MANUFACTURING SAME
- 专利标题（中）： 可以减少寄生电容及其制造方法音响变换器
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申请号： EP01906974.9申请日： 2001-02-05
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公开(公告)号： EP1254586A2公开(公告)日： 2002-11-06
- 发明人: COLLINS, James, Steven
- 申请人： Knowles Electronics, LLC
- 申请人地址： 1151 Maplewood Drive Itasca, Illinois 60143 US
- 专利权人： Knowles Electronics, LLC
- 当前专利权人： Knowles Electronics, LLC
- 当前专利权人地址： 1151 Maplewood Drive Itasca, Illinois 60143 US
- 代理机构： Dunlop, Brian Kenneth Charles
- 优先权： US500202 20000208
- 国际公布： WO01060117 20010816
- 主分类号： H04R19/01
- IPC分类号： H04R19/01
摘要：
An acoustical transducer including a case and a support member, diaphragm, and backplate located within the case. The diaphragm is connected to the support member and is capable of vibrating. The backplate is mounted to the support member and is spaced a distance from the diaphragm to provide a gap between the backplate and the diaphragm. An electret material on the backplate cooperates with the diaphragm to develop a signal which is transmitted to an amplifier. By having an assembly wherein the backplate does not contact the diaphragm, the capacitance of the assembly is reduced.
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