All kinds of special display requirements, including military displays, are classified into the same category generally. They have common characteristics, such like special specifications, strict quality requirements, and long-term supply. Typical applications in this field such as 3D displays, ultra-high brightness displays for projection, or as parallel image transfer, or ultra-narrow viewing angle displays, etc. Of course, there are also have applications like special vehicles, military NVIS or special spectral displays, etc.