Micron Opens Second Advanced Packaging Facility in Taichung; HBM Supply Expected to Remain Tight Through 2028
nashnova research
Micron opened its second HBM packaging plant in Taichung on October 15, with Taiwan's President Lai Ching-te attending; the company expects memory supply to stay tight through 2028, with most 2027 HBM capacity already locked in by customers.
What does this new plant do?
The facility — Advanced Assembly and Test Taiwan 2 (AATT2) — handles packaging and testing for HBM (high-bandwidth memory, a high-speed memory built specifically to sit alongside AI chips).
This means → Micron's back-end HBM capacity in Taiwan has effectively doubled, from one plant to two running in parallel.
Taiwan's President Lai Ching-te and Economy Minister Kung Ming-hsin attended. Micron President Manish Bhatia represented the company; ASUS, MediaTek, ADATA, and other customers were also present.
Why will HBM supply stay tight through 2028?
Micron's latest earnings report states plainly: memory supply-demand in fiscal 2027 and 2028 will be far tighter than fiscal 2026.
The company has already locked in customer agreements for the vast majority of 2027 calendar-year HBM bit supply. In plain terms = the capacity isn't built yet, but the output is already spoken for.
Micron also expects HBM bit shipment growth to outpace conventional DRAM through calendar 2028. This reflects AI's pull on high-speed memory reshaping the entire memory industry's center of gravity.
What does Micron's capacity footprint look like?
Beyond the two Taichung packaging plants, Micron's HBM advanced packaging facility in Singapore is expected to begin initial production in early 2027 — creating a Taiwan-plus-Singapore multi-site network.
Micron has operated in Taiwan for over thirty years, covering product development, advanced process technology, and packaging. The company calls Taiwan's talent pool, supplier ecosystem, and manufacturing expertise central to its AI strategy.
This means → Micron's bet isn't on a single factory — it's on an Asia-spanning HBM capacity chain.
What does the market watch next?
The core test: whether Micron can ramp multi-site capacity on schedule and deliver on the orders it has already locked in.
In plain terms = signing orders is not the same as shipping product. The ramp period between a plant opening and stable output is the biggest window of uncertainty.
If capacity lands on time, Micron's HBM market share stands to rise further; if it doesn't, competitors could fill the gap.
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