Patent ID: 8497461

Claim:
A light sensor circuit, comprising: a first transistor connected between a first reference voltage and a second power source; a second transistor connected between a gate electrode and a second electrode of the first transistor, the second transistor including a gate transistor receiving a first control signal from the gate electrode; a third transistor connected between the first reference voltage and the first transistor, the third transistor including a gate electrode receiving a second control signal; a fourth transistor connected between the second power and the first transistor, the fourth transistor including a gate electrode receiving an inverted second control signal; a light receiving element connected between the second reference voltage and the third reference voltage; a fifth transistor connected between the second reference voltage and a cathode of the light receiving element, the fifth transistor including a gate electrode receiving the first control signal; a first capacitor connected between the cathode of light receiving element and the third reference voltage; a sixth transistor connected between the cathode of the light receiving element and a first electrode of the first capacitor, the sixth transistor including a gate electrode receiving a third control signal; and a second capacitor connected between the gate electrode of the first transistor and a first electrode of the first capacitor.