China could improve chip production techniques despite US efforts to halt its progress.
and a secretive chip-making partner in China have filed patents for a low-tech but potentially effective way to make advanced semiconductors, raising the prospect that
Quadruple patterning is a technique for etching lines on silicon wafers multiple times to increase transistor density — and therefore performance. Huawei’s patent application, released on Friday, describes a method that uses the technology to make more sophisticated semiconductors. “Adoption of this patent will increase the design freedom of circuit patterns,” said the filing to China National Intellectual Property Administration.
Leading chip makers like Taiwan’s TSMC use EUV machines to produce advanced chips because they have the highest production yields — meaning the cost per chip is minimised. If Huawei and its partners use alternative methods for semiconductor production, their cost per chip may be higher than the industry’s standards.The most advanced chips now in commercial production use 3nm technology, including chips that TSMC makes for the likes of Apple.
In response, the Biden administration is looking for additional means to contain China’s progress. It’s pressing allies like South Korea and Germany to join the effort, and is considering blacklisting even more Chinese chip firms linked to Huawei, including SiCarrier.
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