DR (Digital Radiography) is a technology that directly converts X-ray image information into digital signals by using one-dimensional or two-dimensional X-ray detectors under the control of a computer with image processing function. In DR technology, the detection equipment currently used is a flat panel detector. Flat panel detector is a device that can convert X-rays into electrical signals, which can quickly collect X-ray images and digitally transmit them to a computer for processing and display. Compared with the traditional film method, DR technology has higher sensitivity, wider dynamic range and faster imaging speed, and can provide clearer and more accurate X-ray images. Flat panel detectors are widely used in medical image diagnosis, industrial nondestructive testing and other fields, providing better diagnostic and testing tools for doctors and engineers.