Patent ID: 9637371
Date: 2017-05-02
CPC Classifications: B81B,B81C,G01N,H05K

Claim:
1. A microshell membrane transducer structure, comprising: a MEMS region dispose over a substrate, the MEMS region including a MEMS structural layer defining at least one lower transducer capacitor plate; a flexible portion of an upper microshell layer disposed over the lower transducer capacitor plate, the flexible portion of the upper microshell layer configured as a flexible transducer membrane disposed over the underlying lower transducer capacitor plate; a cavity or open area being defined between the flexible transducer membrane and the lower transducer capacitor plate; and one or more upper release holes in the upper microshell layer; where the flexible portion of the upper microshell layer further comprises one or more out-of-plane decoupling structures disposed around an in-plane central portion of the flexible transducer membrane, an open area defined under each of the out-of-plane decoupling structures that is contiguous with a cavity or open area defined between the in-plane central portion of the flexible transducer membrane and the lower transducer capacitor plate.