Patent ID: 11869771
Assignee: STMICROELECTRONICS S.R.L.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The device according to claim 1, further comprises at least one second anchorage element of the passivation layer protruding in at least a second cavity in the semiconductor body at the first surface, the at least one second anchorage element fixes the passivation layer to the semiconductor body and comprises:
a third portion in the semiconductor body at a second distance from the first surface in the first direction, and the third portion having the first dimension; and
a fourth portion being superimposed with the third portion, extending in the semiconductor body from the first surface to the third portion and, the fourth portion having the second dimension, and
wherein the first anchorage element and the at least one second anchorage element are spaced apart from one another at the first surface of the semiconductor body by a third distance in the second direction.