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Home > Industry News

SK Siltron successfully develops EUV DRAM wafers, which will be supplied to Samsung and SK Hynix

Views : 153
Update time : 2022-09-13 10:59:04
        According to reports, it is reported that SK Siltron has begun to supply a new generation of memory wafers to Samsung Electronics, SK Hynix, etc., hoping to break the oligopoly of Japanese companies and accelerate the self-production of semiconductor materials in South Korea. It is reported that SK Siltron has completed the development of polished wafers for 10nm-class fourth-generation (1a) DRAM in June, and is expected to start supplying Samsung, SK Hynix, etc. in the second half of 2022.
        At present, the most widely used silicon wafers can be mainly divided into polished and epitaxial wafers. Polished wafers are made of high-purity polysilicon and are used for DRAM, NAND Flash, etc., while epitaxial wafers are made by depositing a silicon single crystal layer with a thickness of several micrometers (µm) onto polished wafers, which are mainly used in systems semiconductor. It is reported that the wafers developed and mass-produced by SK Siltron are mainly used for the latest 10nm-class DRAM.
        Samsung and SK Hynix have introduced the extreme ultraviolet (EUV) process in the fourth generation (1a) DRAM. EUV is a new generation of exposure technology using equipment exclusively produced by ASML in the Netherlands. Since EUV has different characteristics from existing light wavelengths, different materials must be used, and the development of 1a DRAM wafers is also very difficult. It is understood that only the Netherlands ASML can produce EUV lithography machines in the world. Canon and Nikon, the two major Japanese lithography machine companies, have withdrawn from EUV production. However, Japanese companies still have a strong accumulation in the EUV industry chain. EUV photoresist and EUV Wafers are mainly controlled by Japanese manufacturers.
        Three years ago, in order to suppress South Korea, Japan announced to restrict the export of various advanced semiconductor technologies and materials to South Korea. EUV products are very sensitive, but South Korean companies are also actively developing alternative products. Recently, SK Siltron, a subsidiary of the SK consortium, announced the development of 10nm Polished wafers of grade 4 (1a) DRAM, which can be used for memory chip production in EUV process.
        SK Siltron is the largest silicon wafer company in Korea and the third largest in the world. Its products mainly include polished wafers and epitaxial wafers. The former is based on high-precision polysilicon and is suitable for memory and flash memory chips, while the latter is based on high-precision monocrystalline silicon. , suitable for logic technology, that is, the production of chips such as CPU and GPU.
        Samsung and SK Hynix's DRAM memory chips have also begun to use EUV technology. Before, only two Japanese companies, Shengco and Shin-Etsu, required EUV-grade silicon wafers (they two are the first and second largest silicon wafer suppliers) It can be produced, and Samsung will also import products from Japanese manufacturers.
        As SK Siltron mass-produces EUV-level silicon wafers, Samsung and SK Hynix will also purchase products from Korean companies, reducing their dependence on Japanese manufacturers and diversifying their supply chains.
 
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