Based on LCOS display technology, it has the characteristics of high resolution, low power consumption, small size, and easy installation; It can be combined with LED, laser and other light sources and applied to projection devices with 4K and 8K resolutions and brightness of thousands or tens of thousands of lumens. Integrating projection fusion technology can present large screen display applications with lossless image quality of hundreds or thousands of inches. Applicable scenarios include emergency command halls, outdoor large screen displays, etc.