L5 · MaterialsMaterials⬦ ChokepointJapan

Ibiden

High-end IC substrate leader

Ibiden is a dominant supplier of the large flip-chip IC substrates (FC-BGA) that carry Nvidia/AMD accelerator dies. Substrate capacity is a real, capital-intensive bottleneck sitting between the foundry and final package; a shortfall here throttles shippable GPUs regardless of TSMC wafer output.

How it fits the stack

Ibiden with what it depends on (above) and what it feeds (below). The figure renders as a crawlable diagram and upgrades to an interactive 3D graph as it scrolls into view.

IbidenDepends on ↑Feeds ↓

Ibiden in the AI stack. Ibiden with its immediate upstream dependencies (top) and downstream dependents (bottom) in the AI value chain. Hover a node in 3D, or read the full relationships below.

Graph data (text) — 5 entities, 5 relationships

Ibiden —uses→ Advanced Packaging Substrates (ABF)
Ibiden —sources→ Ajinomoto Build-up Film (ABF)
Ibiden —supplies→ Ajinomoto Build-up Film (ABF)
Nvidia Data-Center GPU (Blackwell/Rubin) —uses→ Ibiden
TSMC CoWoS (Chip-on-Wafer-on-Substrate) —uses→ Ibiden

Depends on ↑ · 3

usesAdvanced Packaging Substrates (ABF)⬦ABF build-up film is the near-monopoly dielectric in high-end substrates sourcesAjinomoto Build-up Film (ABF)⬦Ibiden substrates use ABF film suppliesAjinomoto Build-up Film (ABF)⬦Ajinomoto ABF is the dielectric in Ibiden substrates

Feeds ↓ · 2

usesNvidia Data-Center GPU (Blackwell/Rubin)⬦large FC-BGA IC substrate is a capacity-limited input to every GPU package usesTSMC CoWoS (Chip-on-Wafer-on-Substrate)⬦CoWoS package mounts on a large IC substrate that gates shippable units

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