Patent ID: 11898989
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A MEMS device, comprising:
a first semiconductor body having a first surface of the first semiconductor body;
a second semiconductor body having a first surface of the second semiconductor body facing the first surface of the first semiconductor body;
a first spacer element and a second spacer element, each between the first surface of the first semiconductor body and the first surface of the second semiconductor body, the first and second semiconductor bodies at a distance apart from one another;
a first duct between the first and second semiconductor bodies and between the first and second spacer elements, the first duct having a main extension direction and a first opening and a second opening opposite to one another in the main extension direction;
a first particulate sensor including a first emitter unit configured to generate acoustic waves in the first duct, and a first particulate-detection unit configured to detect a particulate present in the first duct, the first emitter unit on the first semiconductor body and the first particulate-detection unit on the second semiconductor body, the first emitter unit and the first particulate-detection unit facing one another through the first duct in a direction that transvers the main extension direction; and
a first gas sensor on one of the first semiconductor body or the second semiconductor body, facing the first duct and configured to detect a gas in air present in the first duct.