TSMC’s packaging boss just put a 2027 date on the CoWoS boom
FTNN (Sep 27): At SEMICON Taiwan’s 3D IC summit, TSMC advanced packaging vice president He Jun (何军) said CoWoS capacity is on track from about 9,000 wafers a month in 2022 to about 175,000 by 2027 — nearly twenty times in five years — with compound annual growth above 80% through 2027 and the boom expected to run through 2029.
What happened
On September 27, 2026, Taiwan financial outlet FTNN reported remarks by He Jun, ’s vice president for advanced packaging technology and services, from the 3D IC Global Summit at SEMICON Taiwan. Treat the capacity path as company-stated and press-reported, not as a third-party wafer audit.
He’s spine numbers are blunt. TSMC’s advanced packaging capacity sat near 9,000 wafers per month in 2022. By 2027 it is expected to reach about 175,000 wafers per month — growth of nearly twenty times across five years. He said the compound annual growth rate for CoWoS capacity through 2027 will exceed 80%, and that this stretch of rapid growth is expected to continue through 2029. That is an executive roadmap on a public industry stage, which is rarer than analyst recirculation of the same bottleneck.
The how-we-build color matters almost as much as the wafer-month headline. He said AI chip generations are iterating so fast that advanced packaging research can no longer move in the old one-after-another sequence. The supply chain has to run multi-track development in parallel so packaging recipes keep pace with customer product refreshes. At the same time, surging demand puts heavier pressure on back-end equipment and materials vendors: a chip can revise in months while tool development often takes longer. TSMC’s answer, per He’s remarks, is pushing commonality and modularity — keeping more shared structure in tools and systems so lines can switch across product generations without rebuilding the kitchen every time.
FTNN also printed TSMC’s share-price tape that day; that markets color is noise here. The story is the capacity path and the modular-tool pitch.
The same weekend’s Chiayi park exclusive is the shovel-geography chapter: where the next packaging plants may sit. He’s SEMICON numbers are the slope of the CoWoS curve those plants would have to fill. Geography and wafer-month path answer different questions.
Why it matters
CoWoS scarcity is the sentence every AI buyer already knows. An on-record packaging VP putting ~9k → ~175k and “through 2029” on a SEMICON stage turns the scarcity from rumor into a company growth plan you can date. If the path holds, hyperscalers get a clearer calendar for when denser GPU-and-memory packages stop being lottery tickets. If tools and materials cannot modularize as fast as SKUs churn, the wafer-month number on the slide outruns the factory floor.
For multipolar readers: Taiwan still sets the CoWoS queue; OSAT overflow and overseas packaging experiments remain the relief valves, not the center. What to watch: whether 2027 monthly capacity chatter stays near the 175,000 mark in later company comments; whether modular-tool language shows up in equipment-vendor orders, not only summit slides; and whether the “through 2029” boom line softens once a few AI product cycles miss or land.