Driven by Growing TSMC Orders, Amkor Plans to Invest Over KRW 1 Trillion to Expand Packaging Plant in South Korea
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Amkor Technology's Korean subsidiary plans to invest roughly ₩1.009 trillion (~$650 million) to build six new packaging buildings in Gwangju, with surging TSMC packaging orders cited as the key driver — a sign that advanced packaging capacity is becoming a core bottleneck across the chip supply chain.
How does Amkor plan to spend this money?
Amkor will add six new buildings inside its existing Gwangju High-Tech Industrial Complex campus, investing a total of roughly ₩1.009 trillion (~$650 million) to expand chip packaging and testing capacity.
The project will roll out in phases through 2035. The first tranche — about ₩50 billion — targets completion by 2030.
This means → Amkor is not front-loading the spend. A ten-year phased approach lowers single-period capital pressure while locking in long-term capacity.
Why now, and why Gwangju?
Korean media directly tied the expansion to a sharp increase in TSMC packaging orders, listing it as the primary driver.
The Gwangju plant is Amkor's Korean headquarters and handles roughly half of the company's global output. It employs about 4,000 people — one of Gwangju's largest single employers.
In plain terms = TSMC's own advanced-packaging lines cannot keep up with demand, so more orders flow to Amkor. Gwangju is Amkor's most mature site — expanding on home turf is far faster than building from scratch.
How certain is this deal?
Neither Amkor nor TSMC has officially confirmed or publicly commented on the reports.
Gwangju city officials visited the Amkor campus in March to review investment conditions and discuss potential cooperation.
A municipal official said the investment, if realized, would help build a back-end semiconductor cluster and packaging industry belt in the region, and that Amkor is expected to announce specifics in due course.
This means → Local government is already engaged, but no corporate-level announcement exists yet — the project sits at the "strong intent, not yet signed" stage.
Why is Gwangju suddenly a semiconductor hotspot?
Samsung Electronics has reportedly all but finalized plans to build a large-scale back-end semiconductor plant near the Gwangju High-Tech Industrial Complex, with investment potentially reaching tens of trillions of won on a site of roughly 200,000 pyeong. Samsung has not confirmed; reporting frames it as "intent," not a formal announcement.
Gwangju's mayor-elect said last week that a major global memory-chip company will soon announce a large-scale investment plan, without naming the firm.
This reflects a broader shift: Korean semiconductor investment is spreading from the Seoul–Gyeonggi corridor to second-tier cities like Gwangju — back-end packaging and testing require lower cleanroom standards than front-end fab, giving site selection more flexibility.
Are SK Group and OpenAI also eyeing Gwangju?
The Seoul Shinmun reported that SK Group's large GPU data-center infrastructure project with OpenAI is increasingly likely to be sited in Jangseong County, adjacent to the High-Tech Industrial Complex.
SK Group Chairman Chey Tae-won said in Tokyo on June 10 that the next semiconductor plant location is still under comprehensive review; the current priority is the Yongin cluster, but overseas capacity is not ruled out.
In plain terms = Gwangju is emerging as a candidate for both back-end semiconductor and AI-compute buildouts, but SK's language leaves room — Yongin comes first, and sites outside Korea remain on the table.
Content is for reference only, not financial advice.