Patent ID: 8415636

Claim:
A method for inspecting a two-dimensional array X-ray detector that comprises: a converting film that is sensitive to X-rays and outputs a charge signal corresponding to an incident X-ray amount; a common electrode that is formed on a surface of the converting film and supplies bias voltage to the converting film; a plurality of pixel electrodes that are arranged on a surface of the converting film in a matrix corresponding to the pixels, the surface being on a side opposite to the common electrode; a plurality of storage capacitors that are respectively connected to the pixel electrodes and store charge signals; switching elements that are respectively connected to the pixel electrodes; a gate driver that, upon reading of the signals, sequentially turns on the respective switching elements through gate bus lines; and a data collection part that reads the charge signals stored in the respective storage capacitors through data bus lines, the method comprising: a bias voltage step of repeating supply of the bias voltage through the common electrode and a stop of the supply a plurality of times; a dark current value measuring step of measuring pixel values of the respective pixels in a state where X-rays are not irradiated; a defective pixel identifying step of identifying defective pixels on a basis of the pixel values of the respective pixels, the pixel values being measured in the dark current value measuring step; and a determination step of, on a basis of a total number of the defective pixels identified in the defective pixel identifying step or a size of a defective pixel block, determining whether or not the two-dimensional array X-ray detector is usable.