Samsung, SK hynix to build HBM packaging fabs in Chungcheong region as part of $252.5 bil. in total investment - The Korea Times

The South Korean government announced a total investment of KRW 392 trillion (approximately $252.5 billion) into the central Chungcheong region to advance AI-driven industrial growth. This initiative,... Read original →

South Korea’s Chungcheong semiconductor mega-cluster is a strategic bet to anchor AI hardware sovereignty through HBM advanced packaging. Samsung and SK hynix’s massive capex will accelerate localized development of organic interposers, TSV, and hybrid bonding—forcing domestic material suppliers like Doosan and SKC to fast-track high-purity copper foils and photosensitive dielectrics. While enhancing supply chain cohesion, this geographic concentration heightens vulnerability under tightening U.S.-Japan-Netherlands export controls on critical tools. TSMC and Taiwan, China’s OSATs will likely counter by scaling CoWoS capacity, while Micron may lobby for dedicated memory subsidies under the CHIPS Act. Within 18 months, Korea could dominate over 60% of the HBM market—but any secondary sanctions on EUV photoresists or packaging equipment would expose structural fragility in its so-called AI memory hegemony.