CAPACITIVE TOUCH SENSOR

摘要

The present disclosure provides a capacitive touch sensor for an electronic device. The touch sensor has a trace carrier having a sensing surface, a connecting surface, and a number of electrically conductive traces on the trace carrier. The traces form a sensing pattern on the sensing surface and pass from the sensing surface to the connecting surface. The sensor also includes a capacitive sensing circuit operable to electrically couple to the traces at the connecting surface of the trace carrier, and to sense a capacitance change. A touch position on the sensing surface is determined dependent upon the sensed capacitance change.

主权项

1. A capacitive touch sensor, comprising:
a trace carrier having a sensing surface and a connecting surface; a plurality of electrically conductive traces on the trace carrier, each trace of the plurality of electrically conductive traces forming a sensing pattern on the sensing surface and each trace of the plurality of electrically conductive traces passing from the sensing surface to the connecting surface; and a capacitive sensing circuit operable to:
electrically couple to the plurality of electrically conductive traces at the connecting surface of the trace carrier;sense a capacitance change using a first trace of the plurality of electrically conductive traces; anddetermine a touch position on the sensing surface dependent upon the sensed capacitance change.