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US07642575B2 Integrated electronic microphone having a perforated rigid back plate membrane 有权
具有穿孔刚性背板膜的集成电子麦克风

Integrated electronic microphone having a perforated rigid back plate membrane
Abstract:
The present invention provides an integrated electronic microphone formed as part of a semiconductor device, and a manufacturing method therefor. The microphone is formed with a sensing electrode as part of a sensing membrane, and the sensing electrode is connected to the gate of a sensing transistor to provide an output. The microphone may be operated in constant bias or constant charge mode.
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