Patent ID: 11898918
Assignee: NEXTINPUT, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A microelectromechanical (“MEMS”) force sensor for providing temperature coefficient of offset (TCO) compensation, comprising:
a sensor substrate configured to receive an applied force, wherein the sensor substrate comprises a top surface and a bottom surface opposite thereto;
a package substrate;
a solder bump that connects the sensor substrate to the package substrate;
a sensing element arranged on the bottom surface of the sensor substrate, wherein the sensing element is configured to convert a strain on the bottom surface of the sensor substrate to an electrical signal that is proportional to the strain, wherein:
the sensing element comprises a piezoelectric element; and
the piezoelectric element is sandwiched between the solder bump and the sensor substrate; and

a compensation layer arranged on the top surface of the sensor substrate, wherein the compensation layer has a thermal coefficient of expansion that is different than a thermal coefficient of expansion of the sensor substrate.