1, display position: the color screen display position is the LED light in the image; The black screen is mainly the light displaying the image;

2. Different light sources: the color screen did not remove the color filter and backlight, and did not adjust the polarizer and aperture ratio, while the black screen removed the color filter and backlight, and optimized and adjusted the polarizer and aperture ratio, so that the light source could provide the energy needed for resin curing in a shorter time.