Patent ID: 11885705
Assignee: INFINEON TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A capacitive pressure sensor arrangement comprising:
a first rigid electrode structure, a second rigid electrode structure, a first deflectable membrane structure, a second deflectable membrane structure and a third deflectable membrane structure in a vertically spaced configuration,
wherein the first rigid electrode structure is sandwiched between the first and second deflectable membrane structure, wherein the second rigid electrode structure is sandwiched between the second and third deflectable membrane structure, wherein the first, second and third deflectable membrane structures each comprise a deflectable portion, wherein the deflectable portions of the first, second and third deflectable membrane structures are mechanically coupled to each other and are mechanically decoupled from the first and second rigid electrode structures,
wherein the first deflectable membrane structure and the first rigid electrode structure form a first sensing capacitor, wherein the first rigid electrode structure and the second deflectable membrane structure form a second sensing capacitor, wherein the second deflectable membrane structure and the second rigid electrode structure form a third sensing capacitor, and wherein the second rigid electrode structure and the third deflectable membrane structure form a fourth sensing capacitor.