CAPACITIVE MEMS PRESSURE TRANSDUCER AND RELATED MANUFACTURING PROCESS

MEMS pressure transducer (1) including: a semiconductor body (2); a lower dielectric region (4,6), arranged above the semiconductor body (2); a fixed electrode region (12) and a lower anchoring region (14), which are formed by conductive material, are arranged on the lower dielectric region (4,6) and are laterally separated from each other; a membrane (55) of conductive material, which is suspended above the fixed electrode region (12), so as to delimit a cavity (39) upwardly, the fixed electrode region (12) facing the cavity, the membrane (55) being deformable as a function of pressure and forming a variable capacitor together with the fixed electrode region (12); and an upper anchoring region (37") of conductive material, which laterally delimits the cavity (39) and is interposed, in direct contact, between the membrane (55) and the lower anchoring region (14).