Disclosed is a display device having an optical sensor with increased sensitivity. The display device is provided with: a display panel that includes a plurality of display pixel circuits (8) and a plurality of sensor pixel circuits (9a) in a display region (4); and a driver circuit (7) that supplies a driving signal to the sensor pixel circuits (9a). The sensor pixel circuits (9a) are each provided with: a light receiving element (PD1); a storage node (INT) that retains electrical charges corresponding to the light amount that entered the light receiving element (PD1); and a read-out switching element (M1) connected to the storage node (INT). The display device is further provided with a first switching element (T1) that is connected between the light receiving element (PD1) and the storage node (INT) and that operates in a saturation region, and a second switching element (T2) that resets the storage node (INT).