After more than ten years of hard work in the production of liquid crystal materials in China, it has gradually formed a considerable scale of industry, from complete imports to partial exports, with an annual sales volume of about 12 tons. Although it has developed rapidly, its share in the world liquid crystal materials market is very small, and it still cannot keep up with the needs of the world LCD development. Although the research and development of liquid crystal materials in China has started since the early 1970s, due to the limitation of the overall technical equipment level and investment funds of the domestic LCD industry, the liquid crystal industry has not been included in the key scientific and technological projects by the state, and the research funding is seriously insufficient. And the shortage of talent limits the development of the industry. So far, research and development of liquid crystal display devices and liquid crystal materials are still dominated by TN type and medium and low grade STN types. In terms of liquid crystal materials, due to the limitations of the overall technical equipment level of the domestic LCD industry, although many research institutes have invested in research and development of liquid crystal displays or liquid crystal materials, in addition to the breakthrough in the synthesis of perfluorophenylene-based liquid crystal compounds of Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences In addition to achievements, there is a big gap between foreign materials development and applied research compared with foreign countries. Especially in STN, TFT-LCD supporting liquid crystal materials research and development work is very slow, compared with Japan, Germany and the United States and the United States, at least eight to ten years behind, making China lack of competitiveness in the world liquid crystal display industry market. At present, there are relatively few varieties of medium and high-grade products in China, which still cannot meet the needs of the domestic market. It is urgent to increase the research and development efforts, especially the liquid crystal materials for STN-LCD. The domestic market has already shown demand status, and it is urgent to occupy as soon as possible; medium and high-grade liquid crystal material technology The content is high, and the price and profit are relatively high.