A display type image sensor using thin-film photoelectric conversion elements that function as light emitting elements and light receiving elements so that the sensor can be used both as an active matrix display and as an image sensor, wherein pixels (PX) arranged in matrix each comprise: a first pixel portion (PXA) having a first conduction control circuit (SWA) supplied with a scan signal through a scan line (gate) and a first thin-film photoelectric conversion element (11A) which can emit and receive light and connects to a first interconnect (D21) and a second interconnect (D22) through the first conduction control circuit (SWA); and a second pixel portion (PXB) having a second conduction control circuit (SWB) supplied with a scan signal through the same scan line (gate) and a second thin-film photoelectric conversion element (11B) which can emit and receive light and connects to the first interconnect (D21) and a third interconnect (D23) through the second conduction control circuit (SWB).