Photoresist is an important supporting material in the field of semiconductor chip and flat panel display processing. Yongguang Chemical has set up a production base in Suzhou, serving customers in mainland China, and providing strong support for the semiconductor and display device industry in mainland China. In addition, Yongguang Chemical's negative photoresist is also unique in its ability to serve the special process of LED chip manufacturing.
In recent years, the semiconductor industry in mainland China has developed rapidly. It is expected that by 2010, Greater China will provide 70% of the total number of integrated circuits required by the global information industry. Therefore, mainland China is a leading global semiconductor material supplier. The land of contention.
Expand market areas according to local conditions
Yongguang Chemical is headquartered in Taiwan, and its electronic chemistry division mainly uses Taiwan as a research and development base, and has achieved remarkable results in the field of photoresist. Taiwan is the center of global integrated circuit foundry, which enables Yongguang to cooperate with the world's leading integrated circuit manufacturers, to communicate smoothly with customers, and to test products on customers' production lines.
Sun Zheren, deputy general manager of sales of Yongguang (Suzhou) Optoelectronic Materials Co., Ltd., said in an interview with China Electronics News that in China, Yongguang Chemical has adopted different development strategies for the characteristics of different regions of the mainland. As East China is the main gathering place for IC manufacturing in mainland China, Yongguang takes Shanghai as the center and aims at the needs of high-end processes, and jointly develops applicable and advantageous products with customers. In the South China market, customers in this area are characterized by operations. Highly flexible and highly mobile, it tends to have a mature maturity of photoresist products in the market development, mainly to meet the recent needs of customers, so that mass production can be achieved quickly.
The supply of materials is closely related to the degree of industrial concentration. For a material supplier, setting up a factory requires investing huge amounts of money and worrying about technology outflows. Therefore, in areas where the market is not large enough or the industrial technology is not mature, material suppliers often set up sales points to serve customers first, and then consider setting up factories locally when they can reach economic scale. However, from the perspective of the semiconductor industry, if there is no good material supplier in the local area, it will not be able to produce a cost-effective product to expand the city. Chang Zheren said that China is a vast country, if the raw material manufacturing base is far away from the semiconductor chip production base, Will greatly increase the transportation costs of raw materials. It is precisely because of the recognition that East China is the main gathering place of the semiconductor industry in mainland China, Yongguang Chemical will set up its production base in Suzhou to serve customers nearby. Of course, Yongguang Chemical will not give up its expansion of business in the central and western regions. Everlight is looking forward to cooperating fully with these customers to overcome difficulties in transportation and inventory.
According to Sun Zheren, the first phase of Yongguang (Suzhou) Optoelectronic Materials Co., Ltd., located in Suzhou Industrial Park, has begun to provide customers with four major categories of digital printer inks, developer solutions, single crystal silicon polishing fluids and CD-R dyes. The second phase of the Suzhou plant is currently under construction. He said that the Yongguang Suzhou production base is expected to achieve breakeven by the end of this year.
Negative photoresist service LED special process
At present, G-line photoresist is dominant in Yongguang's photoresist products, and I-line photoresist has also been put into production. According to Sun Zheren, in the next two or three years, I-line photoresist will gradually become the mainstream. In the higher-end products, Yongguang's DUV (deep-UV) photoresist has also passed the verification of 8-inch and 12-inch wafer production lines. In addition, epoxy resin encapsulant is another important product of Yongguang Chemical, which is used in the semiconductor chip packaging industry.
Yongguang Chemical's photoresist products are also used in the manufacturing process of LED (Light Emitting Diode) chips. Generally, the process of fabricating a metal electrode in a semiconductor process is to first evaporate or sputter a layer of metal on the surface of the substrate, and then remove unnecessary portions of the layer metal by photolithography and etching processes to obtain a desired pattern. . Sun Zheren told the China Electronics News that the metal materials used in the electrodes of the LEDs are not easily etched to obtain their patterns. Therefore, it is necessary to apply the Lift-Off process to coat a layer of light on the substrate. The glue is then lithographically patterned, the metal is evaporated after the desired pattern is formed, and the remaining photoresist and the metal coated on the photoresist are removed to obtain a pattern of the metal electrode. In this process, negative photoresist is needed, and Everlight's ENPI200 series photoresist products are a good choice.
According to Sun Zheren, Yongguang Chemical is actively developing the matching Lift-Off photoresist to meet the different production processes of LED customers. For example, for high-reflection substrate materials that are not conducive to patterning, Everlight has developed a dye-off photoresist containing dye to eliminate excessive cross-linking due to high reflection; in addition, when the LED process must be miniature In order to increase its luminous brightness, Yongguang Chemical also cooperated with customers to develop high-resolution Lift-Off photoresist EPI622, which can reduce the line width to less than 1 micron in a special process, which can be used for high-brightness LED thin line width process. Sun Zheren said: Yongguang Chemical will provide LED customers with the most suitable photoresist products based on years of experience in photoresist development and production. It hopes to assist customers in mastering the key Huangguang chemical materials related technology while the LED industry is booming. Enhance the advantages of its production integration capabilities and enhance global competitiveness.
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