South Korea's Chip Exports Concentrate on Taiwan as TSMC Packaging Becomes New Hub
Claire Weston
Taiwan's share of Korean semiconductor exports doubled from 9% to nearly 20% in two years — not because Taiwan is buying more, but because TSMC's advanced packaging is now the mandatory assembly step for AI chips. Korean memory must stop in Taiwan before it can ship.
Why are Korean chips suddenly flooding into Taiwan?
Taiwan's share of Korean semiconductor exports rose from 9.0% in 2022 to 19.9% in 2025, vaulting from fourth-largest destination to second, behind only mainland China.
Over the same period, mainland China's share fell from 53.1% to 40.3%, with export value slipping from $75.58 bn to $74.46 bn.
This means → the geographic center of Korean chip exports is shifting structurally, not cyclically.
What happens to these chips once they reach Taiwan?
SK Hynix produces HBM — high-bandwidth memory, a type of high-speed memory purpose-built for AI chips. That HBM ships to Taiwan, where TSMC's 2.5D advanced packaging (a process that bonds memory and compute dies together, like assembling building blocks) integrates it with GPUs into a complete AI accelerator for Nvidia.
In plain terms = Korea makes the "memory piece," TSMC does the "assembly," and U.S. companies collect the finished product — Taiwan is the critical waystation on this production line.
Customs records log the destination by where goods arrive. So Taiwan's share surge reflects the geographic concentration of packaging, not a rise in Taiwanese consumption.
How big is the risk of concentrating at TSMC?
Professor Lee Jong-hwan of Sangmyung University warns: any TSMC disruption would block AI chip supply for Nvidia and others, and SK Hynix would inevitably be hit.
He stresses that replacing TSMC's advanced packaging capacity in the short term is extremely difficult — an alternative supplier would need the technology, scale, and customer qualification all at once.
This means → even if Korean memory makers have plenty of HBM capacity, a bottleneck at TSMC packaging can still choke finished AI processor shipments.
Will this trend continue?
Lee expects Taiwan's share of Korean chip exports to rise further as the AI accelerator market expands.
Even if U.S. tech firms develop custom AI chips to reduce reliance on Nvidia GPUs, those processors still need HBM and advanced packaging — the supply-chain dependency doesn't dissolve by switching chip designs.
This reflects a deeper reality: advanced packaging is no longer just one step — it is the physical bottleneck of the entire AI chip supply chain.
What do the H1 2026 numbers show?
Korean ICT exports hit a record $253.9 bn in H1 2026, up 120.5% year-on-year. Semiconductors and SSDs together accounted for 83.7% of the total.
Semiconductor exports alone grew 162.5% YoY; ICT exports to Taiwan grew 92.5% — far outpacing the overall pace.
SK Hynix posted record profit in Q2 2026, began mass-producing HBM4 that quarter, and listed its planned P&T7 advanced packaging plant as a mid-to-long-term investment.
What would it take for Korea to reduce its TSMC dependency?
A fundamental reduction requires Korea to build up capabilities across multiple links — base chips, foundry, and advanced packaging alike.
In plain terms = plugging one gap isn't enough. Korea needs to go from "making parts only" to "assembling the finished product itself" — and the timeline and capital required should not be underestimated.
SK Hynix is already planning its own packaging lines, but from blueprint to mass production to customer qualification, the road to genuinely diversified risk remains long.
Content is for reference only, not financial advice.