Huawei's Tau Law shifts AI chip race to glass substrates, advanced packaging - digitimes

Huawei’s Tau Law reframes AI chip competition by shifting focus from process-node scaling to system-level integration via advanced packaging and heterogeneous die stacking. This pivot will intensify demand for glass substrates, silicon photonics, and 2.5D/3D integration, pressuring Chinese foundries like SMIC and JCET to accelerate domestic capabilities. Geopolitically, U.S. export controls may soon target advanced packaging tools, forcing China to fast-track localized hybrid bonding and TSV processes. NVIDIA and AMD will likely double down on Chiplet ecosystems, yet their reliance on TSMC’s CoWoS capacity remains a strategic vulnerability. Within 18 months, performance leadership will hinge not on transistor density but interconnect efficiency and thermal management—turning packaging into the new battleground for AI compute sovereignty.