Patent ID: 11914781
Assignee: CIRRUS LOGIC INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A touch-sensitive user input device comprising:
a first electrode layer comprising a first plurality of electrodes;
a second electrode layer comprising a second plurality of electrodes;
an insulating layer disposed between the first electrode layer and the second electrode layer; and
at least one piezoelectric transducer,
wherein an electrode of the at least one piezoelectric transducer is electrically coupled to the first plurality of electrodes of the first electrode layer,
wherein the touch-sensitive user input device further comprises drive/sense circuitry operable to:
sense a position of a user input on the touch-sensitive user input device based on a change in a capacitance of the first and/or second electrode layer;
sense a force or pressure of a user input on the touch-sensitive user input device based on a signal output by the at least one piezoelectric transducer; and
output a haptic output signal to the at least one piezoelectric transducer.