A light-sensing apparatus comprising: a light-sensing circuit comprising: a light-sensing transistor (10,20,T p) configured to sense light; a switching transistor (T sel) connected in series with the light-sensing transistor and configured to output data; a first gate line (Gate_Tsel) connected to a gate of the switching transistor; a data line (DATA) connected to a source of the switching transistor; a driving voltage line (V DD) connected to a drain of the light-sensing transistor; and a second gate line (Gate_Tp) connected to a gate of the light-sensing transistor; wherein the light sensing transistor (10,20,Tp) and the switching transistor (T sel) are connected in series without a capacitor connected between the light sensing transistor and the switching transistor, the light sensitive circuit has a gate driver arranged to apply, during a standby time, a low voltage to the switching transistor (T sel) via the first gate line (Gate_ T sel) and a high voltage to the light-sensing transistor (10,20,Tp) via the second gate line (Gate_Tp), and when data is output, to apply the high voltage to the switching transistor via the first gate line (Gate_T sel) and the low voltage to the light-sensing transistor via the second gate line (Gate_Tp), characterised in that the light-sensing transistor (10,20,T p) is a light-sensitive oxide semiconductor transistor including a light-sensitive oxide semiconductor as a channel layer (15,22), and the gate driver is configured to supply a constant operating voltage to the drain of the light-sensing transistor from the driving voltage line (V DD) so that the operating voltage is maintained constant during a standby time in which data is not output from the light sensing circuit and during the time in which data is output by the light sensing circuit. a light-sensing circuit comprising: a light-sensing transistor (10,20,T p) configured to sense light; a switching transistor (T sel) connected in series with the light-sensing transistor and configured to output data; a first gate line (Gate_Tsel) connected to a gate of the switching transistor; a data line (DATA) connected to a source of the switching transistor; a driving voltage line (V DD) connected to a drain of the light-sensing transistor; and a second gate line (Gate_Tp) connected to a gate of the light-sensing transistor; a light-sensing transistor (10,20,T p) configured to sense light; a switching transistor (T sel) connected in series with the light-sensing transistor and configured to output data; a first gate line (Gate_Tsel) connected to a gate of the switching transistor; a data line (DATA) connected to a source of the switching transistor; a driving voltage line (V DD) connected to a drain of the light-sensing transistor; and a second gate line (Gate_Tp) connected to a gate of the light-sensing transistor; wherein the light sensing transistor (10,20,Tp) and the switching transistor (T sel) are connected in series without a capacitor connected between the light sensing transistor and the switching transistor, the light sensitive circuit has a gate driver arranged to apply, during a standby time, a low voltage to the switching transistor (T sel) via the first gate line (Gate_ T sel) and a high voltage to the light-sensing transistor (10,20,Tp) via the second gate line (Gate_Tp), and when data is output, to apply the high voltage to the switching transistor via the first gate line (Gate_T sel) and the low voltage to the light-sensing transistor via the second gate line (Gate_Tp), characterised in that the light-sensing transistor (10,20,T p) is a light-sensitive oxide semiconductor transistor including a light-sensitive oxide semiconductor as a channel layer (15,22), and the gate driver is configured to supply a constant operating voltage to the drain of the light-sensing transistor from the driving voltage line (V DD) so that the operating voltage is maintained constant during a standby time in which data is not output from the light sensing circuit and during the time in which data is output by the light sensing circuit.