MEMS MICROPHONE AND METHOD OF MANUFACTURING THE SAME

A MEMS microphone includes a substrate having a cavity, a back plate disposed over the substrate, the back plate having a plurality of acoustic holes, a diaphragm interposed between the substrate and the back plate, and being spaced apart from the substrate and the back plate, the diaphragm covering...

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Bibliographische Detailangaben
1. Verfasser:	SUN, Jong Won
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES MICROSTRUCTURAL TECHNOLOGY PERFORMING OPERATIONS PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTUREOR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS PUBLIC ADDRESS SYSTEMS TRANSPORTING
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Beschreibung
Zusammenfassung:	A MEMS microphone includes a substrate having a cavity, a back plate disposed over the substrate, the back plate having a plurality of acoustic holes, a diaphragm interposed between the substrate and the back plate, and being spaced apart from the substrate and the back plate, the diaphragm covering the cavity, forming an air gap between the back plate, and sensing an acoustic pressure to generate a displacement, and a plurality of anchors extending from an end portion of the diaphragm and along a circumference of the diaphragm, each of the anchors having a serpentine shape in a plan view and including a bottom portion making contact with an upper surface of the substrate to support the diaphragm from the substrate. Thus, the MEMS microphone may have adjustable area of the slit.