A homegrown version of the extreme ultra-violet lithography system needed to produce the most advanced chips is on trial at a Huawei facility, say reports.
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Scooped by
Richard Platt
onto Internet of Things - Technology focus March 16, 8:14 AM
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Yes, Chinese foundries can knock out less sophisticated chips with fewer transistors. Through techniques such as double and quadruple patterning, they might even be able to produce ICs with transistor measurements of just 7 nm's. SMIC, China's best-known foundry, appeared to have made one for the Mate 60 Pro, a Huawei smartphone released in 2023. In layman's terms, EUV works by firing a concentrated beam of light off the smoothest mirrors in the world and onto a silicon wafer, where it etches complex circuit designs like an Antman scribe. It uses a wavelength measuring just 13.5 nm, compared with the 193 nm of deep ultraviolet lithography (DUV), its predecessor. The difference is like that between a fat marker and a thin ballpoint to a fine artist. According to various reports China's Huawei, develped an EUV system called laser-induced discharge plasma (LDP) technology that's been going through tests at a Huawei facility in Dongguan. One report says it has been able to generate the 13.5-nanometer wavelength by "vaporizing tin between electrodes and converting it to plasma via high-voltage discharge, where electron-ion collisions produce the required wavelength." "It's a pretty cool technique because it's actually simpler than what ASML does," said Earl Lum, a IC expert at EJL Wireless Research. "It could be cheaper to make the machine because of the strategy that ASML had to use." Trials do not mean a Chinese flavor of EUV is close to commercial deployment, of course, and a few press reports that leave many questions unanswered must be treated with a generous dose of skepticism. ASML's share price fell 7% on March 10, days after the reports about China's apparent EUV breakthrough. But this may have been linked to more general concerns about tariffs and their economic impact. Other chip stocks also suffered.