TSMC leans into packaging

TSMC plans to open an advanced chip-packaging plant in Arizona by 2029, adding a key manufacturing step that has become a choke point for artificial-intelligence chips. (finance.yahoo.com) Packaging is the stage where separate pieces of silicon are connected into one working processor, and TSMC said the Arizona site will support CoWoS and 3D integrated circuit technologies used in high-performance chips. Deputy co-chief operating officer Kevin Zhang said the company was already applying for permits and building out that capability in an existing Arizona facility. (finance.yahoo.com) TSMC paired that expansion plan with a slower tool roadmap. Zhang told reporters the company has no current plan to use ASML’s high-numerical-aperture extreme ultraviolet machines in production through 2029, saying the latest systems are too expensive for broad deployment. (bloomberg.com) Instead, TSMC used its April 22 North America Technology Symposium in Santa Clara to roll out A13, the process generation after A14. The company said A13 is a direct shrink of A14, with 6% area savings, up to 15% speed improvement at the same power, or 30% lower power at the same speed, with production targeted for 2029. (businesswire.com) That combination puts more weight on assembly and integration, not just smaller transistors. Reuters reported that modern Nvidia-style artificial-intelligence processors are often built from several chiplets joined together, and that advanced packaging has become a supply bottleneck for Nvidia and other customers. (finance.yahoo.com) The Arizona move also extends TSMC’s broader U.S. buildout. In March 2025, TSMC said it intended to expand its U.S. investment to $165 billion and said that plan would include its first U.S. advanced-packaging investments to help complete a domestic artificial-intelligence supply chain. (pr.tsmc.com) Arizona was already on that path. In October 2024, Amkor and TSMC said they had signed a memorandum of understanding to bring advanced packaging and test capabilities to Arizona, tying TSMC’s wafer production to Amkor’s planned backend operations in the state. (pr.tsmc.com) The tool decision landed immediately in the market because TSMC is ASML’s biggest customer. Bloomberg reported that ASML shares fell after Zhang’s comments, as investors weighed whether cheaper, established tools could stay in use longer even as TSMC pushes ahead on A13. (bloomberg.com) TSMC’s message in Santa Clara was that it still plans to move to a new 2029 node, but it does not want every part of that move to depend on the most expensive new lithography gear. The Arizona packaging plant fits that approach: more of the value in advanced chips is shifting to how the pieces are put together after the wafers leave the fab. (bloomberg.com, finance.yahoo.com)