TSMC Buys Two AUO Display Plants in Taichung for NT$38.8B
3 min readTSMC is buying two display plants from AU Optronics in Taichung for NT$38.8 billion, about US$1.2 billion, giving the world’s largest chipmaker a ready-made block of cleanroom space in central Taiwan as AI chip demand keeps outrunning its capacity. AUO’s board approved the sale this week.
What the TSMC AUO plants deal covers
The sale covers AUO’s Taichung Phase 2 site, including a fifth-generation and a 7.5-generation LCD plant, with their buildings, cleanrooms and supporting equipment. The registered floor area is about 429,000 square meters, or roughly 166,000 ping of usable space in local terms. AUO expects a disposal gain of around NT$18.5 billion, according to TrendForce, which compiled reporting from Economic Daily News, TechNews and other Taiwanese outlets.
AUO Chairman Paul Peng said the deal supports the company’s shift to an asset-light model and that its asset monetization program is nearing completion. The same board meeting canceled a separate plan to sell AUO’s Huaya facility to Quanta after the two sides failed to agree on factory specifications and a delivery schedule.
Why TSMC wants old LCD fabs
TSMC has not said what it will build inside the AUO plants. Industry sources cited by TrendForce suggest the site could help the company integrate chip manufacturing and advanced packaging in Taichung, where its nearby AP5 facility already supports CoWoS-L packaging for AI accelerators and where it plans to spend around NT$1.5 trillion on four 1.4nm fabs at the Central Taiwan Science Park, with phased completion from 2027. The footprint could also anchor a co-packaged optics supply chain, according to Commercial Times.
The appeal of a display fab is time. Gen 5 and Gen 7.5 LCD lines are enormous, flat, vibration-controlled buildings with cleanrooms already in place. Converting one is faster than pouring a new foundation, although how much time it saves depends on the condition of the facilities and on the renovation and tooling plans that follow.
Why it matters
Advanced packaging, more than wafer fabrication, has been the tightest bottleneck for AI chips from Nvidia, AMD and the hyperscalers’ own designs, and TSMC has been racing to add CoWoS capacity across Taiwan. Buying existing shells lets it move faster than a multi-year fab build, and it signals that the AI packaging crunch is not easing any time soon.
For Taiwan’s display industry, the deal is another sign of a sector shrinking toward niche products while chipmakers absorb its real estate. Watch for TSMC’s conversion timeline, and for whether more panel makers follow AUO’s lead.