Merak3040 is a large-size CMOS flat panel detector with high performance, the processes used on Merak3040 are large-size and high-precision splicing technology and coupling technology d on large-area scintillator. Featured by low noise, high precision, high rate, low power consumption and parallel reading circuit, Merak3040 is able to capture all tiny details efficiently and bring accurate image information under relatively lower power consumption. It also supports performance optimization processing, ded image processing, 10G network image transmission and redundant backup design, and provides a more convenient and reliable method on image processing and transmitting. Merak3040 is widely used in high-end medical imaging and other fields with its excellent imaging performance.