Patent ID: 8384041

Claim:
A radiographic sensing array comprising: a scintillator configured to emit light in response to reception of radiation; a plurality of optically sensitive pixels formed over a substrate arranged to form a light-sensitive area optically coupled to the scintillator, wherein each optically sensitive pixel comprises: a scan line oriented along a first direction of the array; a data line oriented along a second direction of the array; a bias line; a switching element comprising a first electrode, a second electrode connected to the data line, and a control electrode connected to the scan line; and a photosensitive element including at least first and second electrodes, the first electrode electrically connected to the bias line and the second electrode electrically connected to the first electrode of the transistor; and a plurality of calibration pixels, wherein each calibration pixel comprises: a scan line; a data line; a capacitive element coupled between the data line and the scan line, where the calibration pixels do not include photosensitive elements.