RADIOGRAPHIC IMAGING DEVICE, RADIOGRAPHIC IMAGING SYSTEM, CONTROL METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

摘要

The present invention may suppress feedthrough components in video imaging, Namely, TFT driving waveforms are plurally overlapped, and an integration period of capacitors C of amplification circuits is set so as to encompass a generation period of a feedthrough component (OFF), a generation period of a feedthrough component (ON), and a period in which charges (a signal component) are read out from storage capacitors of pixels by ON states of the TFTs. A number of driving waveforms to be overlapped is determined in accordance with a frame rate, the integration period and a reset period, or the like.

主权项

1. A radiation imaging device comprising:
a radiation detector including
a plurality of scan lines disposed in parallel, anda plurality of pixels disposed in a matrix pattern, each pixel including a sensor portion that generates charges in response to irradiated radiation and a switching element that is controlled to ON state or OFF state in accordance with a state of a control signal flowing along a particular scan line, wherein switching elements read out the charges generated by the sensor portions; a plurality of amplifier sections, disposed in correspondence with the pixels of the radiation detector, each amplifier section being provided with an integrating capacitor that integrates the charges and a reset section that resets charges in the integrating capacitor, the plurality of amplifier sections amplifying electronic signals based on the charges read out from the corresponding pixels by the switching elements by a predetermined amplification ratio, a setting section that sets an integration period of the integrating capacitors, the integration period encompassing
a first integration period for integrating a feedthrough component generated by a first of the switching elements of a first of the pixels being put into the OFF state by a control signal flowing through a particular scan line, anda second integration period for integrating a feedthrough component generated by a second of the switching elements of a second of the pixels, in which a timing for reading out the charges are a plurality of cycles later than the first pixel based on a frame rate, being put into the ON state and the charges read out from the second pixel due to this ON state; and a control section is configured to put the first switching element into the OFF state and to put the second switching element into the ON state within the integration period set by the setting section.