IMAGE SENSOR AND X-RAY IMAGE SENSING MODULE INCLUDING THE SAME

摘要

PURPOSE: An image sensor and an X-ray image sensing module with the same are provided to obtain high quality X-ray digital images by applying a CDS(Correlation Double Sampling) method to each of single pixels which are operated mutually and asynchronously. CONSTITUTION: A charge sensing amplifier(200) amplifies electric charges detected by a detector(110). The charge sensing amplifier includes a first capacitor(C1), a first switching unit(SW1), a second capacitor(C2), and a second switching unit(SW2). The first capacitor is connected between an input terminal and an amplification terminal. The first switching unit is connected between the input terminal and the amplification terminal. The second capacitor is connected between the amplification terminal and an output terminal. The second switching unit is connected between the output terminal and a reference voltage terminal. [Reference numerals] (110) Detector; (210) Amplifier; (220) Delay unit;