MICROELECTROMECHANICAL MICROPHONE WITH MEMBRANE TRENCH REINFORCEMENTS AND METHOD OF FABRICATION
A microelectromechanical (MEMS) microphone with membrane trench reinforcements and method of fabrication is provided. The MEMS microphone includes a flexible plate and a rigid plate mechanically coupled to the flexible plate. The MEMS microphone includes a stoppage member affixed to the rigid plate...
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| creator | Rasmussen, Kurt Ravnkilde, Jan Akiyama, Jotaro Mortensen, Dennis Ginnerup, Morten Rombach, Pirmin Liu, Cheng-Yen |
| description | A microelectromechanical (MEMS) microphone with membrane trench reinforcements and method of fabrication is provided. The MEMS microphone includes a flexible plate and a rigid plate mechanically coupled to the flexible plate. The MEMS microphone includes a stoppage member affixed to the rigid plate and extending perpendicular relative to a surface of the rigid plate opposite the surface of the flexible plate. The stoppage member limits motion of the flexible plate. The rigid plate includes a reverse bending edge that include a first lateral etch stop that includes a first corner radius and a second lateral etch stop that includes a second corner radius. The first corner radius is more than 100 nanometers and the second corner radius is more than 25 nanometers. Further, a lateral step width between the first corner radius and the second corner radius is less than around 4 micrometers. |
| format | Patent |
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The MEMS microphone includes a flexible plate and a rigid plate mechanically coupled to the flexible plate. The MEMS microphone includes a stoppage member affixed to the rigid plate and extending perpendicular relative to a surface of the rigid plate opposite the surface of the flexible plate. The stoppage member limits motion of the flexible plate. The rigid plate includes a reverse bending edge that include a first lateral etch stop that includes a first corner radius and a second lateral etch stop that includes a second corner radius. The first corner radius is more than 100 nanometers and the second corner radius is more than 25 nanometers. Further, a lateral step width between the first corner radius and the second corner radius is less than around 4 micrometers.</description><language>eng</language><subject>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</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20211111&DB=EPODOC&CC=US&NR=2021347635A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20211111&DB=EPODOC&CC=US&NR=2021347635A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Rasmussen, Kurt</creatorcontrib><creatorcontrib>Ravnkilde, Jan</creatorcontrib><creatorcontrib>Akiyama, Jotaro</creatorcontrib><creatorcontrib>Mortensen, Dennis</creatorcontrib><creatorcontrib>Ginnerup, Morten</creatorcontrib><creatorcontrib>Rombach, Pirmin</creatorcontrib><creatorcontrib>Liu, Cheng-Yen</creatorcontrib><title>MICROELECTROMECHANICAL MICROPHONE WITH MEMBRANE TRENCH REINFORCEMENTS AND METHOD OF FABRICATION</title><description>A microelectromechanical (MEMS) microphone with membrane trench reinforcements and method of fabrication is provided. 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The MEMS microphone includes a flexible plate and a rigid plate mechanically coupled to the flexible plate. The MEMS microphone includes a stoppage member affixed to the rigid plate and extending perpendicular relative to a surface of the rigid plate opposite the surface of the flexible plate. The stoppage member limits motion of the flexible plate. The rigid plate includes a reverse bending edge that include a first lateral etch stop that includes a first corner radius and a second lateral etch stop that includes a second corner radius. The first corner radius is more than 100 nanometers and the second corner radius is more than 25 nanometers. Further, a lateral step width between the first corner radius and the second corner radius is less than around 4 micrometers.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | 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 |
| title | MICROELECTROMECHANICAL MICROPHONE WITH MEMBRANE TRENCH REINFORCEMENTS AND METHOD OF FABRICATION |
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