A display device comprising: a base layer; a backplane structure provided on the base layer, the backplane structure including pixel circuits and a sensor circuit; a pixel layer provided on the backplane structure, the pixel layer including light emitting elements respectively connected to a corresponding pixel circuit and a light receiving element connected to the sensor circuit; an encapsulation layer covering the pixel layer; a black matrix provided on the encapsulation layer, wherein the black matrix includes openings (OP1, OP2) overlapping the light emitting elements and the light receiving element; and a color filter (CF1, CF2) provided on the encapsulation layer and covering the black matrix, wherein the light emitting elements include light emitting layers, the light receiving element includes a light receiving layer, and the openings (OP1, OP2) of the black matrix overlap the light emitting layers and the light receiving layer wherein a pixel circuit disposed on a pixel row among the pixel circuits comprises: a first pixel transistor for receiving a voltage of a first power source from a first power line and generating a driving current supplied to one of the light emitting elements; characterised in that the display device also comprises: a second pixel transistor connected between a data line (Dj) and a first electrode of the first pixel transistor, the second pixel transistor including a gate electrode connected to a first scan line (S1i); and a third pixel transistor connected between a gate electrode of the first pixel transistor and an initialization power line, the third pixel transistor including a gate electrode connected to a second scan line (S2i), and wherein the sensor circuit disposed on the pixel row comprises: a first sensor transistor and a second sensor transistor, connected in series between a second power line to which the voltage of the first power source is supplied and a readout line (RXk); and a third sensor transistor connected between the initialization power line and the light receiving element. a base layer; a backplane structure provided on the base layer, the backplane structure including pixel circuits and a sensor circuit; a pixel layer provided on the backplane structure, the pixel layer including light emitting elements respectively connected to a corresponding pixel circuit and a light receiving element connected to the sensor circuit; an encapsulation layer covering the pixel layer; a black matrix provided on the encapsulation layer, wherein the black matrix includes openings (OP1, OP2) overlapping the light emitting elements and the light receiving element; and a color filter (CF1, CF2) provided on the encapsulation layer and covering the black matrix, wherein the light emitting elements include light emitting layers, the light receiving element includes a light receiving layer, and the openings (OP1, OP2) of the black matrix overlap the light emitting layers and the light receiving layer wherein a pixel circuit disposed on a pixel row among the pixel circuits comprises: a first pixel transistor for receiving a voltage of a first power source from a first power line and generating a driving current supplied to one of the light emitting elements; characterised in that the display device also comprises: a second pixel transistor connected between a data line (Dj) and a first electrode of the first pixel transistor, the second pixel transistor including a gate electrode connected to a first scan line (S1i); and a third pixel transistor connected between a gate electrode of the first pixel transistor and an initialization power line, the third pixel transistor including a gate electrode connected to a second scan line (S2i), and wherein the sensor circuit disposed on the pixel row comprises: a first sensor transistor and a second sensor transistor, connected in series between a second power line to which the voltage of the first power source is supplied and a readout line (RXk); and a third sensor transistor connected between the initialization power line and the light receiving element. a second pixel transistor connected between a data line (Dj) and a first electrode of the first pixel transistor, the second pixel transistor including a gate electrode connected to a first scan line (S1i); and a third pixel transistor connected between a gate electrode of the first pixel transistor and an initialization power line, the third pixel transistor including a gate electrode connected to a second scan line (S2i), and wherein the sensor circuit disposed on the pixel row comprises: a first sensor transistor and a second sensor transistor, connected in series between a second power line to which the voltage of the first power source is supplied and a readout line (RXk); and a third sensor transistor connected between the initialization power line and the light receiving element. a first sensor transistor and a second sensor transistor, connected in series between a second power line to which the voltage of the first power source is supplied and a readout line (RXk); and a third sensor transistor connected between the initialization power line and the light receiving element.