China LED chip core equipment analysis
For a long time, because the LED industry's chip and its manufacturing core technologies are in the hands of a few foreign companies, which makes the domestic LED industry show an overall level is not high at the same time, have to rely on imported foreign chip manufacturing equipment, leading to high product prices, Affect its promotion and application. TFT LCD screens are characterized by good development, high screen, strong sense of layering, and bright colors, but there are also relatively power consumption and low cost. TFT screen technology legendary the development of mobile phone color screens. Many of them support 65536 color displays, and even have 160,000 color displays. With a very high screen TFT, the visual advantage is important. Tft Lcd Display,The Lcd Display,9.7 Inch Industrial Lcd Display,Lvds Tft Display ESEN Optoelectronics Technology Co., Ltd, , https://www.esenlcd.com
In 2009, the LED lighting chip equipment project in Nanhai, Foshan, Guangdong Province was developed by the research and development team of Prof. Gan Zhiyin of Huazhong University of Science and Technology. It also reached an agreement for cooperation in production, research, and development with Zhaoxin Group, Nanhai District, Foshan City, Guangdong Province, and began trial production of the prototype and industrialization of the project. The budget of this project is about 500 million yuan, and the first phase is 80 million yuan. It is the first Chinese company to break the foreign technology monopoly, and the world’s fourth mass production LED lighting chip core equipment manufacturing project, which will mean restricting the Chinese LED lighting industry. The bottleneck of the core equipment is expected to achieve localization. After the products are industrialized, they will enable the domestic semiconductor lighting industry to truly grasp the technological initiative and will also greatly reduce the investment cost of LED chip production.
With the characteristics of high efficiency, energy saving and environmental protection, the LED industry has achieved rapid development in China. By 2015, the scale of the LED industry is expected to reach 500 billion yuan, and the vast majority of MOCVD equipment in recent years depends on imports, and the market is monopolized by European and American companies. MOCVD equipment procurement has seen “crazy†growth in the past two years. In the past two years, the growth rate of MOCVD equipment in China has ranked first in the world. The total installed capacity of MOCVD in mainland China was only about 150 units by 2010, and it has reached 909 units as of November 2012. .
The successful localization of MOCVD equipment means that the technology monopolized by foreign countries will be broken for a long time. Many domestic LED companies will bid farewell to the complete dependence on foreign products and shorten the gap with the world. The domestic LED industry independent industrial ecological chain will also be more perfect.
Technical characteristics
TFT technology was developed in the 1990s. It uses new materials and new processes for fine semiconductor all-electronic manufacturing technology. It is the basis of liquid crystal (LC), inorganic and organic thin-film electroluminescence (EL and OEL) flat panel displays. It is a variety of films made on non-single materials such as glass or plastic products (of course also on the surface) through methods and chemical reaction forming processes, and a large number of micro-integrated circuits (LSIC) are produced through the processing of the films. Non-single crystal crystals can achieve cost reduction, which is an extension of traditional small integration to large area, function, and direction. Manufacturing TFTs that control the switching performance of pixels (LC or OLED) on large glass or plastic products has a higher technical content than manufacturing complete ICs on silicon wafers. The required production equipment and production technology surpass the production of large-scale integration of semiconductors, which is the luster of modern technology. The main features are:
(1) Large area: The first generation of large-area glass products (300mm×400mm) TFT-LCD-production line was put into production at the beginning of the nineties, and the area of eye glass has been expanded to 60mm×80mm in 2000), as well as 950mm×1200mm glass The design will also run.
(2) High integration: The size of the 1.3-inch TFT chip used for the projection of liquid crystal is one million for GA. The resolution is SXGA (1280×100×1280×1000×1280×1000×1280×1000×16.1 inch TFT screen amorphous film) 50nm, and TAB ON GLASS and SYSTEM ON GLASS technology, its IC integration, The technical requirements for equipment and supplier technology are more difficult than traditional LSI.
(3) Powerful function: TFT as a matrix selection solution provides the light valve characteristics of liquid crystal. TFT-LCD is the first Liquid Crystal Display in human history whose display quality exceeds that of CRT. The function will be more powerful, which is unmatched by traditional small integrated circuits.
(4) Design: Glass products and plastic products have fundamentally solved the problem of large semiconductors and opened up potential applications for the application of small semiconductors.
(5) Ingenious process: In addition to the use of vapor phase, chemical vapor deposition (chemical vapor deposition) MCVD (molecular chemical vapor deposition) and other processes to form films, laser flame technology has also begun to be applied traditionally, not only making amorphous films, polycrystalline films, but also Single crystal films can be manufactured. Can make silicon film, can also make other II-VI group and III-V group semiconductor thin film.
(6) Wide range of application fields. Liquid crystal display based on TFT technology is a rich industry in the information society, and the technology can also be applied to the rapid growth of thin-film organic electroluminescence (TFT-OLED) flat panel Display Screen shots. .