TSMC CoWoS (Chip-on-Wafer-on-Substrate)
The advanced-packaging chokepoint gating AI GPU supply
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Full file coming soon. TSMC CoWoS (Chip-on-Wafer-on-Substrate)'s links, deals and figures below are what the graph holds today.Not collected yet: 360, Money, Investors, Market share, People and hiring, Legal, News and events, Earnings calls. Anthropic is the first complete company file (people, investors, legal, hiring, birth to now); other companies follow one at a time. Open Anthropic's file
Overview
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L3 Fabs · Packaging · Taiwan · chokepoint
TSMC CoWoS (Chip-on-Wafer-on-Substrate)
The advanced-packaging chokepoint gating AI GPU supply
Part of
- Links
- 28
- Deals from filings
- 0
- Exposed if it fails
- 7
- 79 within 2 steps
- It depends on
- 13
- 56 within 2 steps
No company file yet: revenue, customers and other figures appear here once they are taken from its filings.
What it is
CoWoS is TSMC's 2.5D advanced-packaging platform that co-integrates GPU/ASIC logic dies with stacks of HBM memory on a silicon interposer, and it is the single biggest packaging bottleneck for AI accelerators. Nvidia Blackwell/Rubin, AMD Instinct, and most HBM-bearing accelerators require CoWoS (variants CoWoS-S/R/L), making its capacity the practical ceiling on AI GPU shipments. TSMC has been aggressively multiplying CoWoS capacity through 2025-2026 (new AP fabs in Chiayi and Taichung) yet demand still outstrips supply.
Key facts
from its map entry- Function
- 2.5D interposer co-packaging logic + HBM
- Variants
- CoWoS-S / CoWoS-R / CoWoS-L
- Constraint
- Capacity is the ceiling on AI GPU shipments
- Users
- Nvidia, AMD, Broadcom, Google TPU
Pick a link to move the graph there: · · · · · · ·
Connections28 links
Pulled 28 Oct 2026 · AI Systems Map links
Its suppliers
13Who depends on it
7Partners
2Rivals
2Policy
1Designs
1Compare two: what TSMC CoWoS (Chip-on-Wafer-on-Substrate) shares with another entity
Pick a second entity to see their direct links, the suppliers, backers, rivals and regulators they share, and the deals with the same parties. The graph lights the same set.
Data sources1 source
| Source | Feeds | Data dated | Pulled | Pulled again | Status |
|---|---|---|---|---|---|
| AI Systems Map links28 links; built July 2026, deals re-checked against filings 27 to 28 Oct 2026 | Connections | · | 28 Oct 2026 | when the map is reviewed | hand-built; deals checked against filings |
Times are New York time. Free sources are pulled on the schedule shown by the pipeline runner (data/corpus/run_pipelines.py), which logs every run; paid sources run only with the owner's yes; filings and newsroom pages are re-read when a new document is filed.
Links come from the AI Systems Map ontology. Deals carry the filing's own wording and a quote, checked against the document; latest source 2026-10-26. Not investment advice.