Projection screens are produced with the development and needs of film technology and projection technology. From the birth of the world’s first projection screen in 1903 to today, the development history of the screen has been a whole hundred years, whether it is inherent quality or cloth material. , Or the appearance and structure of the projection screen has a qualitative leap. Projection screens are produced with the development and needs of film technology and projection technology. From the birth of the world’s first projection screen in 1903 to today, the development history of the screen has been a whole hundred years, whether it is inherent quality or cloth material. , Or the appearance and structure of the projection screen has a qualitative leap. In the history of the development of projection screens, people first projected images on clean white walls. Because the white walls were not very effective and could not be moved, the projection was greatly restricted. Therefore, the production of white plastic screens replaced the white walls and became the first A generation of real projection screens. The second-generation product of the projection screen is a glass bead screen, which adds a layer of very small glass beads on the surface of the screen. Because the glass bead itself has a function similar to light gathering and can reflect the incident light in the original direction, its gain is high. The white plastic screen is doubled, and the theoretical value reaches 2.0. The effect of displaying images in the viewing angle range is much higher than that of the white plastic screen. As a third-generation projection screen product, the metal screen has a considerable breakthrough compared with the previous two generations of projection screens. On the one hand, while the metal screen increases the screen gain, it also increases the viewing angle of the screen. At present, the theoretical value of gain of metal screens on the market is generally around 2.0, but the viewing angle is greatly increased compared with glass bead screens, reaching about 60 degrees. On the other hand, metal screens have made great progress in their ability to resist ambient light interference. In normal light environment, you can directly use the metal screen to watch the projection, and the effect is quite good. In addition, compared to the white plastic screen and the glass bead screen, the metal screen has a better three-dimensional effect. Using it to watch the three-dimensional projection, the effect is quite shocking. The core technology of the fourth-generation projection screen is the microcrystalline projection display technology. The projection screen with the introduction of microcrystalline projection display technology has made a breakthrough in color expression. First of all, the color is more saturated and vivid, and there is no color cast. Secondly, the contrast is increased, the black is deeper, the white is more transparent, the layers are richer, and the picture is very three-dimensional. In addition, the microcrystalline projection display technology screen has a very strong anti-interference light ability. Even in an environment with lights and windows, the projection screen is still clear and sharp, the colors are still bright, and the effect is almost plasma. Compared with the previous projection that can only be viewed in a closed room, the introduction of the microcrystalline projection display technology screen greatly improves the viewing environment for projection. Another point of the innovation of microcrystalline projection display technology is that it solves the problems of solar effect, hot spot effect, and Moir effect caused by high-gain screens during projection. Finally, the screen using the microcrystalline projection display technology also has a very big breakthrough in gain. From a low gain of 0.8 to a high gain of 10.0, users can choose a microcrystalline screen with corresponding brightness according to their actual situation.