Capacitive fingerprint sensor and sensing panel thereof

Abstract

A capacitive fingerprint sensor and a sensing panel are provided. The capacitive fingerprinting sensor includes a sensing circuit, a level switch, an output switch. The sensing circuit has a first capacitor providing a sensing voltage according to a first sensing driving signal. A control terminal of the level switch is coupled to the sensing circuit to receive the sensing voltage, a first terminal thereof receives a high voltage level, and a second terminal thereof provides a sensing determination signal. A control terminal of the output switch receives a second sensing driving signal, a first terminal thereof is coupled to the second terminal of the level switch to receive the sensing determination signal, and a second terminal thereof is coupled to a data line. The sensing determination signal is provided through the level switch to avoid a parasitic capacitance on a trace influencing a voltage level of the sensing determination signal.

Dependencies are inferred from the claim text.