• 专利标题:   Micro electromechanical system (MEMS) device e.g. MEMS microphone has membrane that is extended over cavity of support and is partially reinforced by graphene.
  • 专利号:   US2015381078-A1, DE102015211866-A1, KR2016002397-A, CN105228076-A, US9641949-B2, KR1775220-B1, CN105228076-B
  • 发明人:   MASSONER J, MASONE J
  • 专利权人:   MASSONER J, INFINEON TECHNOLOGIES AG, INFINEON TECHNOLOGIES AG
  • 国际专利分类:   H02N001/00, B81B003/00, B81B007/02, B81C001/00, H04R019/02, G01L009/00, H04R019/01, H04R031/00, H04R019/00, H04R007/10
  • 专利详细信息:   US2015381078-A1 31 Dec 2015 H02N-001/00 201603 Pages: 9 English
  • 申请详细信息:   US2015381078-A1 US320466 30 Jun 2014
  • 优先权号:   US320466

▎ 摘  要

NOVELTY - The device (100) has a support such as dielectric spacer (116) having a cavity (128) and a membrane that is extended over the cavity of the support and is partially reinforced by graphene. The membrane comprises poly silicon and a suspension area of the membrane is reinforced by graphene. The support is arranged on a back plate unit between adjacent conductive perforated back plate portions. A first electrode arranged in contact with back plate unit and a second electrode arranged in contact with the membrane. The conductive back plate unit is arranged to extend over the substrate. USE - Micro electromechanical system device such as MEMS microphone for implementing sensors and acoustic actuators. ADVANTAGE - The graphene layer is electrically conductive and the enhanced construction improves the variable capacity sensor. The change of pressure of the environment of the MEMS pressure sensor will lead to a displacement of the membrane that can be sensed capacitively. The graphene for generates microphone membranes of very high compliance and large fracture strength, thus allowing a design of highly sensitive microphones being robust against large stroke displacement. The membrane sticking is prevented during the manufacturing process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for manufacturing a MEMS device. DESCRIPTION OF DRAWING(S) - The drawing shows the cross-sectional view of a MEMS device. MEMS microphone (100) Dielectric spacer (116) Graphene layers (120,121) Arrow (126) Support cavity (128)