Huawei reveals chip design breakthrough to counter US sanctions with new scaling approach

Huawei Targets 1.4-nm Performance Through Alternative Chip Design Breakthrough

Huawei announced at a semiconductor symposium in Shanghai on Monday that it will produce industry-leading semiconductors using a new technology within five years, targeting transistor density equivalent to 1.4-nanometer processes by 2031 1

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. This ambitious goal comes as China's most advanced proven chipmaking capability remains at around 7 nanometers, while Taiwan's TSMC currently uses 2-nm manufacturing technology and plans to introduce 1.4-nm processes for mass production in 2028 1

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. The target represents a significant leap for Huawei as it works to counter U.S. sanctions that have restricted China's access to advanced lithography tools and other key semiconductor technologies.

Tau Scaling Law Offers Path to Overcome Limitations of Traditional Chip Scaling

The company unveiled the Tau Scaling Law, a new principle for improving chip development that shifts focus away from shrinking transistors—the foundation of Moore's Law—which has become increasingly difficult as transistor dimensions are now measured in only a few atoms 1

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. Instead, the Tau Scaling Law concentrates on reducing the time it takes signals and data to move through chips and computing systems. He Hui, director of semiconductor research at Omdia, explained that "what Huawei is proposing is a shift from traditional node-driven scaling to system-level efficiency scaling," focusing on shortening interconnect, lowering latency, and improving data movement inside the chip 1

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. Huawei's Kirin smartphone chips scheduled to launch later this year will be the first to use a Tau Scaling architecture called LogicFolding, which the company says will shorten wiring inside chips and considerably improve performance. The company added that its chip division has designed and mass-produced 381 chips over the past six years based on Tau Scaling Law for use in industries including smartphones and AI computing 1

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US Sanctions Accelerate Domestic Chip Independence Across China's Semiconductor Industry

Huawei's chairman, Xu Zhijun, stated that US sanctions have unintentionally strengthened China's domestic semiconductor industry chain, forcing both Huawei and the wider Chinese industry to accelerate internal development efforts 2

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. "If it weren't for the United States forcing our country, our company, and our industry, we wouldn't have been able to do something like this," said Xu Zhijun, adding "But I also thank the United States for enabling our country's semiconductor industry chain to truly grow" 2

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. After being placed on a U.S. trade blacklist in 2019 that cut it off from many U.S.-origin technologies, Huawei entered what it described as an "extreme survival mode" 1

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. The trade bans forced engineers to develop hundreds of chips under severe technological constraints, leading to broader structural changes across China's semiconductor ecosystem .

Ascend AI Chips Challenge Nvidia in China's Growing AI Market

Demand for Huawei's Ascend AI chips has risen in China this year as domestic tech firms seek alternatives to Nvidia, whose most advanced AI processors are restricted from sale to China 1

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. Huawei's Ascend chip series is central to powering Chinese AI models, including DeepSeek's latest flagship model V4 released last month 1

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. Nvidia CEO Jensen Huang said earlier this month that the company had "largely conceded" China's AI chip market to Huawei 1

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. LogicFolding will be applied to Ascend chips by 2030, as well as large AI clusters made up of hundreds or thousands of chips that power data centers 1

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. SMIC shares rose 7.6% on Monday after Huawei's announcement, reflecting investor confidence in China's advanced chipmaking technology development 1

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