TSMC CoWoS Supply-Demand Gap Reportedly Narrowing from 20% to 10% by End-2026 as Capacity Expands
June-2026 CoWoS refresh (projection, as-of 2026-06-15): TSMC monthly capacity 120K-140K wafers by end-2026 (industry ~200K incl. 50-60K OSAT); supply-demand gap narrowing ~20% to ~10% by end-2026, shortage moderating in 2027; >60% TSMC expansion by 2027, CAGR >80% 2022-27; CoPoS pilots mid-2027, MP 2028-29 with NVIDIA Feynman first customer.
TSMC CoWoS Supply-Demand Gap Narrowing from 20% to 10% by End-2026
Analysis-tier. Every number below is a TrendForce/press projection with an explicit as-of date of 2026-06-15, not realized/audited output. "Announced ≠ under construction ≠ energized" discipline applies — treat as a forward estimate.
What's new vs the KB's existing CoWoS numbers
The KB currently carries the February 2026 figure of a 130K-wafers/mo end-2026 target (35K late-2024 → 75K end-2025 → 130K end-2026), flagged as never checked against realized output. This June 2026 TrendForce update revises and enriches that picture:
- TSMC CoWoS monthly capacity (end-2026): 120,000–140,000 wafers/mo (the 130K KB figure now sits inside a 120–140K band four months later).
- OSAT partners (end-2026): 50,000–60,000 wafers/mo.
- Combined industry (end-2026): approaching ~200,000 wafers/mo.
- Supply-demand gap: narrowing from ~20% today → ~10% by end-2026; TrendForce expects the severe 2.5D packaging shortage to begin moderating in 2027.
- Expansion: TSMC targeting >60% CoWoS capacity expansion by 2027; CoWoS CAGR >80% across 2022–2027.
CoPoS (next-generation panel-level packaging)
- Material/equipment qualification: June 2026.
- Pilot production: mid-2027.
- Mass production: 2028–2029.
- NVIDIA Feynman expected as the first CoPoS customer.
(This article did not restate NVIDIA's CoWoS share; the KB's ~60% NVIDIA-allocation figure remains from earlier sources and is not corroborated here.)
Why it matters for this KB
- Freshest third-party read on the frontier-9 bottleneck. Advanced packaging — not fabrication — remains the binding constraint on AI accelerator supply; a gap narrowing 20%→10% is the first quantified signal that the constraint may ease into 2027 rather than tighten.
- Partially updates (does not close) the Tier-1 "realized CoWoS capacity vs the 130K target" gap: the target is now a 120–140K band with a supply-demand-gap metric attached, but it is still a projection, not realized output. The realized number would come from TSMC's own quarterly management report.
- Introduces CoPoS as the successor packaging node to track, with a concrete 2027-pilot / 2028-29-MP timeline and Feynman as the anchor customer.
Source: TSMC CoWoS Supply-Demand Gap Reportedly Seen Narrowing from 20% to 10% by End-2026 as Capacity Expands — TrendForce, 2026-06-15, citing Economic Daily News / Reuters / Commercial Times. Analysis-tier projection; read via WebFetch.