Patent ID: 7462834

Claim:
A radiation image pickup apparatus, comprising: a plurality of conversion elements for directly or indirectly converting a radiation ray to an electric signal, wherein each of the plurality of conversion elements comprises a first electrode and a second electrode; a plurality of first switches, wherein each of the plurality of first switches comprises one end and an other end and wherein each one end of the plurality of first switches is connected to corresponding ones of the second electrodes of the plurality of the conversion elements, the plurality of first switches together with the corresponding ones of the plurality of conversion elements constituting pixels and being arranged in a matrix; a plurality of readout lines, wherein each one of the plurality of readout lines defines a column and is connected to the other ends of the plurality of first switches of the pixels that are associated with the column; a plurality of scanning lines for scanning, wherein each one of the plurality of scanning lines defines a row and is used to control the plurality of first switches of the pixels that are associated with the row; a plurality of second switches, wherein each of the plurality of second switches comprises one end and an other end and wherein each one end of the plurality of second switches is connected to each of the plurality of readout lines, the other end of the second switch being supplied with a bias voltage for resetting the pixels; a reset line for controlling the plurality of second switches; a bias generation section which is connected between each first electrode of the plurality of conversion elements and each other end of the plurality of second switches, a readout section which is connected to the plurality of readout lines and reads out electric charge by converting the electric charge to a voltage, a scanning section which is connected to the plurality of scanning lines and scans the plurality of scanning lines; and a power control section for controlling the readout section, the bias generation section, the plurality of scanning lines and the reset line, and for causing, in a standby state, a situation where an operation of the readout section is interrupted, the first and second plurality of switches are on and the bias generation section is in operation.