The present invention is a radiographic apparatus, the automatic exposure control method comprising the same and the radiation detector, and relates to a radiographic imaging method, particularly to a radiographic apparatus including the same and a radiation detector having an automatic exposure control function, control the automatic exposure than It relates to a method and a radiography method.
Radiation detector according to an embodiment of the present invention, the photoconductive layer to absorb the radiation that has passed through the subject to generate a charge; An upper electrode formed on said photoconductive layer; High-voltage supply unit for applying a high voltage to the upper electrode; Charge collecting unit for collecting the electric charges to said photoconductive layer located on the bottom; Circuit connected to the charge collection section which extracts the charge data in the charge collection section; And it is electrically connected to the upper electrode may include an automatic exposure control unit which measures the current generated in the photoconductive layer, in response to the current generates a control signal for controlling the radiation amount of the radiation.