Patent ID: 11914777
Assignee: NEXTINPUT, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC G  B  H | IPC B  G  H

Claim 7:
8. A force-haptic system, comprising:
a sensing surface configured to receive an external force;
a sensor chip connected to the sensing surface and configured to receive an applied force, the sensor chip comprising at least one sensing element and an integrated circuit;
an integrated circuit chip;
a haptic actuator connected to the sensing surface and configured to convert an electrical excitation signal into mechanical vibration, wherein the haptic actuator is a piezoelectric haptic actuator;
a circuit board below the sensing surface, wherein:
the sensor chip, the integrated circuit chip, and the haptic actuator are electrically and mechanically coupled to the circuit board;
the integrated circuit is configured to process an electrical signal received from the at least one sensing element; and
the integrated circuit chip is configured to output the electrical excitation signal; and

wherein the piezoelectric haptic actuator comprises:
a bulk piezoelectric substrate having top and bottom surfaces;
top and bottom electrodes disposed on the top and bottom surfaces of the bulk piezoelectric substrate, respectively;
top and bottom passivation layers disposed on the top and bottom electrodes, respectively;
a via configured to provide an electrical connection to the bottom electrode; and
a plurality of pad openings configured to provide electrical and mechanical connection between the haptic actuator and the circuit board.