Due to China's high dependence on Japan, South Korea, the United States, Italy, Germany and other countries in terms of electromechanical, chemical, optical instruments, transportation equipment and rubber plastics, it is more vulnerable to the impact of the escalation of the epidemic. The shutdown of foreign enterprises, the shutdown of logistics and the reduction of exports will directly impact the upstream raw materials supply end of LED display industry, and some materials may rise in price. At the same time through the material supply and price changes indirectly impact the production and sales of screen enterprises in the industrial chain. The worsening epidemic situation in Japan and South Korea has caused a global shortage of semiconductor raw materials and core components, as well as a rise in manufacturing costs, which has impacted the global semiconductor industry chain. As China is an important global supplier of semiconductor materials and equipment, it will have a direct impact on the domestic LED display industry.