TSMC Expands Advanced Packaging Capacity: Two New Plants in Chiayi, Arizona Plans Move Forward

Top-line source views and TSO verification conclusion:

• Source 1 (Reuters): TSMC will add two advanced chip packaging plants in Chiayi Science Park in Taiwan.

• Source 2: TSMC plans to open an advanced chip packaging plant in Arizona, with a target date of 2029, and construction has already begun.

• Source 3: TSMC’s N3 capacity is “said” to be fully booked, and three advanced packaging facilities are under construction in Phase 2 of Chiayi Science Park.

• TSO verification conclusion: The three sources corroborate the main theme that TSMC is expanding advanced packaging capacity; however, the specific number of facilities, locations, and timing do not fully match, and some details cannot be confirmed from the provided sources.

Commonly confirmed facts:

1. TSMC is expanding advanced chip packaging capacity.

2. Chiayi Science Park in Taiwan is one of the key locations in this expansion.

3. Arizona in the United States is also part of TSMC’s advanced packaging footprint.

Main differences or discrepancies:

1. Inconsistent plant counts:

   • Source 1 clearly states “two” new plants;

   • Source 3 says Phase 2 in Chiayi is “under construction” with three advanced packaging facilities.

2. Inconsistent progress descriptions:

   • Source 1 only says it will add capacity;

   • Source 2 says the Arizona plant has “already started construction” and mentions a 2029 target;

   • Source 3 does not mention Arizona’s progress.

3. Technical details appear only partially:

   • Source 2 mentions CoWoS and 3D-IC packaging capabilities;

   • Sources 1 and 3 do not name specific packaging processes.

4. Regarding N3 capacity being “fully booked”:

   • Only Source 3 mentions this, and it cannot be confirmed from the other provided sources.

Background and analysis:
Taken together, the three sources show that TSMC’s actions are focused on advanced packaging, a hardware foundation layer, rather than a single wafer-process expansion. Source 2 further connects this move with U.S. manufacturing and supply-chain expansion, suggesting that its overseas strategy involves not only production but also packaging capacity buildout; however, the motivation for this layout is not directly explained in the provided sources and cannot be confirmed from them.
In this material, the AI infrastructure demand backdrop can only be described in limited terms: Source 2’s headline explicitly points to an “AI infrastructure boom,” but the verifiable information in the body mainly concerns TSMC’s advanced packaging plant construction in Arizona. The sources do not provide directly verifiable details on how AI demand specifically drives capital spending or capacity allocation.

Three-source summary:

• Source 1: TSMC will add two advanced packaging plants in Chiayi Science Park.

• Source 2: TSMC plans to build an advanced packaging plant in Arizona, has already started construction, targets 2029, and will have CoWoS and 3D-IC packaging capabilities.

• Source 3: TSMC’s N3 capacity is reportedly sold out, and three advanced packaging facilities are under construction in Chiayi Science Park Phase 2.

Conclusion:
Based on the three provided sources, it can be confirmed that TSMC is advancing advanced packaging expansion in both Taiwan and the United States. However, the exact number of plants, project stage, and technology configuration are not fully consistent across the sources. Any information not directly supported by at least one source is not inferred here; related motivations, market impact, and more detailed project specifics cannot be confirmed from the provided sources.

Source list:

• TSMC to add 2 advanced chip packaging plants in Chiayi, Taiwan minister says - Reuters

• AI Infrastructure Boom Drives Taiwan Suppliers Toward U.S. Manufacturing Expansion - The Manila Times

• TSMC Sales Jump 36% as Memory Stocks Plunge. What It Means for NVIDIA and AMD - 24/7 Wall St.