China to capture the liquid crystal display (LCD) key material core technology
Abstract: 95% of the global market for liquid crystal display (LCD) manufacturing is dominated by Japanese and Korean enterprises, and China has been relying on imports. Reporters on July 12 interview learned that the Beijing University of Chemical Industry Photopolymerization Technology Research Center has successfully developed the LCD production with black matrix (BM) material key technology, is expected to break the market for nearly 40 years to maintain the monopoly.
LCD display (LCD) manufacturing key materials 95% of the global market by the Japanese and Korean enterprises occupy, China has been dependent on imports. Reporters on July 12 interview learned that the Beijing University of Chemical Industry Photopolymerization Technology Research Center has successfully developed the LCD production with black matrix (BM) material key technology, is expected to break the market for nearly 40 years to maintain the monopoly.
The technology by the Beijing University of Chemical Technology Polymerization Technology Research Center and Jiangsu Bo Yan Electronic Technology Co., Ltd. in cooperation with the development of China Petroleum and Chemical Industry Association identified the main indicators of similar products, similar to the high-impedance BM, which is more than Foreign products, reached the world leading level.
According to the project leader, Beijing University of Chemical Technology Professor Nie Jun, BM is a key material in LCD manufacturing, involving many technical problems, including oligomer structure design and screening, synthesis process to determine and optimize the active monomer screening and control , Color fineness control and stability, product formulation design and optimization. At present, the major international production enterprises are Japan TOK, Nippon Steel Chemical and Mitsubishi Chemical, China has not yet been able to produce, but also the lack of adequate technical staff reserves and key equipment.
The main innovation of this technology is to break through the BM material design and preparation of key technologies to complete the preparation of high impedance BM and general purpose BM. They studied the effects of resin structure and molecular size and morphology on the development properties and resolution, the modified structure of carbon paste, the apparent morphology and the theoretical correlation of the stability and optical properties of the preparation process. Sensitivity and high-resolution photographic system construction, nano-carbon slurry stabilization preparation technology, completed a series of BM material development work.
Among them, the general-purpose BM for the unique products, can correspond to three different mainstream equipment.
Due to different exposure machine parameters are different, the corresponding process and the requirements of the BM also has a big difference, there are few at the same time to meet the two different production processes BM. "We have developed a common BM can meet the three mainstream applications of the process requirements, not only eliminates the need for product line switching, but also reduces the purchase of raw materials, with high technical content and good application "Nie Jun said," and high impedance BM is also achieved high shading performance and high electrical insulation, which in the LCD industry more and more attention.We have this product has exceeded the level of foreign companies, to achieve The international leading position. "
Beijing University of Chemical Technology and Jiangsu Bo Yan Electronic Technology Co., Ltd. and the other six units won the national key research and development program "microelectronics processing with high-end ultra-pure chemicals," a special project will be completed with an annual output of 100 tons of black matrix production line On, with an annual output of 1,000 tons production line construction, in order to achieve large-scale production.
At present, the market demand for high light transmission density (OD) products is also very strong (BM thickness = manufacturer requirements / unit thickness BM OD value). The high impedance of the surface resistance of the product is mainly used to achieve the new color paste to enhance the surface impedance at the same time, also led to the OD decreased. Therefore, in achieving high impedance effect at the same time, enhance the BM's OD value, is the next step in the direction of efforts.