AN X-RAY IMAGE SENSOR WITH COLUMN ADC STRUCTURES AND THE SIGNAL PROCESSING METHOD THEREOF

摘要

The present invention relates to an x-ray image sensor with a column ADC structure and a signal processing method thereof. The present invention includes: an x-ray sensor array unit having multiple x-ray cells receiving x-rays arranged in an array structure; a current source which receives a reset signal and an optical signal of each of the x-ray sensor cells from the x-ray sensor array unit through each column signal line and converts them into electrical analog signals; a free amp which amplifies the analog signals; and a plurality of CDS blocks storing the analog signals individually.