Light detecting device, electro-optical device, and electronic equipment

摘要

PROBLEM TO BE SOLVED: To provide a light detector capable of accurately detecting the intensity of target light regardless of ambient temperature, an electro-optic device including the light detector, and an electronic apparatus including the electro-optic device.;SOLUTION: A light detector 300 includes: a sensor circuit 310 in which a main sensor 310A for outputting a first electrical current corresponding to the intensity of incident light and a secondary sensor 310B for outputting a second electrical current corresponding to the intensity of disturbance light are serially electrically connected; and a difference current detector circuit 340 for detecting a difference current taken out from a node Q when a voltage is applied to both ends of the sensor circuit 310. Assuming that the voltage to be applied to both ends to the sensor circuit 310 is a first voltage and the voltage of the node Q is a second voltage, the light detector 300 detects the intensity of target light in accordance with a difference current obtained when the second voltage takes on a predetermined reference voltage value.;COPYRIGHT: (C)2008,JPO&INPIT