Patent ID: 11965852
Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A microelectromechanical sensor, comprising:
a base, comprising a substrate and a thermal insulating film on a flat top surface of the substrate, wherein the thermal insulating film comprises a bump and a thermal insulating cavity, the bump protrudes upward from the thermal insulating film, such that the thermal insulating cavity is formed within a boundary defined by an inner profile of the bump and the flat top surface, the flat top surface of the substrate and a bottom surface of the thermal insulating film are aligned and in contact on same plane;
a heater provided on the base, and the heater comprising a heating portion; and
a sensing electrode, configured to comply with a shape of the heater, the sensing electrode comprising a sensing portion, wherein the heater and the sensing electrode are adjacent and arranged in parallel at different layers along a stacking direction, and the sensing electrode is electrically insulated from the heater;
wherein, on a reference plane in the stacking direction, a projection of the sensing portion of the sensing electrode is entirely covered by a projection of the heating portion of the heater.