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

Claim 14:
15. A force-haptic system, comprising:
a sensor chip configured to receive an applied force, the sensor chip connected to a sensing surface and comprising at least one sensing element and an integrated circuit;
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 and electrically and mechanically connected to the sensor chip and the haptic actuator, wherein the integrated circuit is configured to process an electrical signal received from the at least one sensing element and to output the electrical excitation signal; and
wherein the piezoelectric haptic actuator comprises:
a thin film piezoelectric substrate having top and bottom surfaces;
top and bottom electrodes disposed on the top and bottom surfaces of the thin film piezoelectric substrate, respectively;
a passivation layer disposed on the top electrode;
a via configured to provide an electrical connection to the bottom electrode;
a semiconductor substrate and a dielectric layer, wherein the dielectric layer is arranged between the semiconductor substrate and the bottom electrode; and
a plurality of pad openings configured to provide electrical and mechanical connection between the haptic actuator and the circuit board.