(LEAD) Samsung, SK hynix to build HBM packaging fabs in Chungcheong region as part of 392 tln won in total investment - Yonhap News Agency

South Korea's government has announced a major investment plan of KRW 392 trillion (approximately USD 252.5 billion) aimed at promoting AI-driven economic growth, with key investments in the Chungcheo... Read original →

South Korea’s KRW 392 trillion AI investment hinges on HBM and advanced packaging to forge a technological moat. This accelerates domestic equipment and materials localization—pressuring firms like SEMES and SK Materials to overcome TSV and photoresist bottlenecks—while reducing reliance on U.S. EDA tools and OSATs downstream. However, concentrating fabs in Chungcheong boosts cluster efficiency at the cost of geopolitical fragility; any Taiwan Strait or Korean Peninsula escalation could fracture this single-node supply chain. In response, Micron may fast-track its alliance with Japan’s Rapidus for 2.5D/3D stacking, while Taiwan, China-based foundries face tough trade-offs between CoWoS capacity expansion and customer lock-in. Over the next 18 months, the HBM4 standard will dictate pricing power. Seoul’s ‘Packaging-as-Fab’ bet is essentially trading capital for time—to secure ecosystem dominance before the next AI chip architecture shift.