The infrared focal plane array (IRFPA) device is a new generation of infrared detectors formed by introducing CCD technology into the infrared band. It is a key device in modern infrared imaging systems and is widely used in infrared imaging, infrared search and tracking systems, and missile navigators. , aerial surveillance and infrared countermeasures. IRFPA is built on multiple technologies such as materials, detector arrays, microelectronics, interconnects, packaging, and more.