Hanmi Semiconductor's Biggest Factory Ever Targets the AI Packaging Bottleneck

South Korea's Hanmi Semiconductor is betting roughly $91.4 million on the idea that advanced packaging — not just chipmaking — is where the next AI crunch will bite.

The company announced Tuesday it will buy an existing factory in Incheon's Juan National Industrial Complex from Mercury Co. and turn it into Plant 8, the largest production site in its 46-year history. The purchase price is about $39.4 million, or KRW 56 billion, with the rest of the money going into remodeling and production gear. Mass production is slated for the second quarter of 2027.

Hanmi's core business is back-end equipment: TC bonders and hybrid bonders that stack high-bandwidth memory (HBM) layers, plus machines for 2.5D packaging of AI accelerators. Those tools sit directly in the path of the AI buildout, because every GPU cluster needs HBM stacks and advanced packaging before it can ship.

Buying time instead of building it

Hanmi chose to acquire an existing building rather than break ground on a new one. The site spans roughly 221,700 square feet — around 6,230 pyeong in Korean measure — and the company argues the shortcut matters. A greenfield fab or packaging plant takes years; a purchased shell can be remodeled and tooled up faster, which is what customers are asking for right now.

"We will proactively secure production capacity and ensure a stable response to customer demand," the company said in a statement, pointing to the Hybrid Bonder Factory, Plant 7, and the new Plant 8 as the two pillars of that plan.

Plant 7, a KRW 100 billion ($70.3 million) project announced last year, is dedicated to hybrid bonder production. When both plants are running, Hanmi says its total production floor will reach about 1.22 million square feet, giving it what it calls the world's largest output capacity for HBM TC bonders and hybrid bonders.

Why packaging equipment is suddenly scarce

The equipment market is expanding faster than suppliers can ship. Hanmi cites SEMI figures projecting global semiconductor equipment sales of $165.9 billion in 2026, up 23.2 percent from the prior year, with the market expected to reach $201.2 billion in 2027 and $229.5 billion in 2028. Those are record numbers for an industry that usually grows in fits and starts.

The demand pull comes straight from memory makers and foundries. Micron is expanding HBM manufacturing and packaging across Singapore, Idaho, New York and Hiroshima, and has raised its planned U.S. investment from $200 billion to $250 billion. TSMC keeps adding fabs in Taiwan and has lifted its total U.S. commitment to $265 billion. SK hynix, Intel and Amkor are all expanding fabrication or advanced packaging capacity too, and each program carries an equipment bill that runs into the billions.

Hanmi's own market position explains the urgency. The company holds roughly 70 percent of the global TC bonder market, the tools used to attach HBM dies to logic chips, according to earlier Maeil Business coverage. TC bonders are one of the tightest points in the HBM supply chain, and memory makers have been booking capacity months ahead as lead times stretch. The July warning from Hanmi's own management — that semiconductor equipment faces supply shortages of its own — now reads as a preview of the Incheon announcement.

There is a timing logic behind the purchase, too. Every quarter of delay in adding bonding capacity means a quarter of lost sales at the peak of the memory upcycle. Hanmi has said repeatedly that delivering tools in line with customers' factory construction schedules is the real competitive edge in this market, and buying a shell building lets the company compress what would otherwise be a multi-year construction schedule into a remodel.

The AI infrastructure wave reaches Korea

The Incheon expansion also points to where the next wave of AI construction is heading. Hanmi's statement name-checks manufacturing projects tied to SpaceX, Tesla and xAI as part of the demand picture, alongside the traditional memory and foundry customers.

Founded in 1980, Hanmi makes back-end packaging and inspection gear used in AI, HBM, mobile devices, power semiconductors, aerospace, low-Earth-orbit satellite communications and defense drones. The company says its product line — TC Bonder, Micro SAW, Vision Placement and EMI SHIELD — serves markets that are all pushing capacity at once.

That breadth matters because the bottleneck is no longer confined to logic chips. Packaging capacity, substrate supply and bonding equipment are all showing strain as AI systems move from design to volume production. Equipment makers that can deliver on time are gaining pricing power, and the ones that cannot risk losing orders to rivals.

A bigger prize than the building

For Hanmi, Plant 8 is not just square footage. The company's stated goal is to own the world's largest production base for HBM bonding tools before the next memory upcycle peaks. With HBM demand tied to every new accelerator launch and Micron, SK hynix and Samsung all racing to add stacking capacity, the timing argument writes itself.

The broader read for the semiconductor industry: advanced packaging has become a first-class constraint on AI growth, and the companies supplying packaging equipment are now investing like chipmakers. Hanmi's $91.4 million bet is small next to Micron's $250 billion program, but it is a direct signal that the packaging equipment segment expects years of double-digit growth, not a single-season spike.

Analysts following the sector have warned that equipment lead times are the real schedule risk for AI data center builds. A delay in TC bonder deliveries can push an HBM line's ramp, which then delays the accelerator, which then delays the server. Hanmi's answer is to hold more finished capacity in-house, so the company can match customers' fab construction schedules.

The company has not said which customers will take Plant 8's output. It did note that semiconductor manufacturers are committing substantial capital to new production capacity worldwide, and that equipment supply constraints are pushing buyers to lock in supplier capacity earlier than they used to.

There is also a supply-chain angle worth watching. Hanmi's bonders depend on precision components, motion-control systems and vision modules that are themselves in short supply. The company has been building up its own supply arrangements for years, and the Incheon site is designed so that final assembly, testing and shipment can happen under one roof. That shortens the delivery pipeline at a moment when customers are measuring lead times in quarters.

What to watch next

Hanmi's next earnings calls will show whether the packaging equipment boom is translating into margin as well as revenue. The company's order book is the early indicator: TC bonder and hybrid bonder orders placed in 2026 will largely determine 2027 utilization at Plants 7 and 8.

There is also a competitive angle. Hybrid bonding — stacking dies without solder bumps — is the technology every memory maker wants for the next HBM generations, and tool suppliers are racing to prove yields. Hanmi's hybrid bonder push puts it directly against rivals in Japan and the Netherlands, and Plant 8 gives it the floor space to scale that line.

For the rest of the chip industry, the takeaway is straightforward: the AI supply chain's most crowded choke points are no longer only in the fab. They are in the packaging halls, and the equipment companies serving them are now spending like it.

(This article draws on company statements and reporting from Pulse2, Maeil Business Newspaper and Semiconductor Digest.)

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