Ibiden vs Unimicron: Advanced packaging compared

November 2026 edition · assessment by Frontier Tech Intelligence

Ibiden ranks 40 on the AI Infra 100 with a score of 91; Unimicron ranks 80 with 86. Ibiden is ahead on technology and positioning. Unimicron is ahead on production. Level on deployment, commercials, progress, firepower and leverage. Ibiden is based in Ogaki, Japan, Unimicron in Taoyuan, Taiwan. Ibiden is named in 5 signals and Unimicron in 1.

Ibiden →

Ogaki, Gifu, Japan · AI Core · Fabrication, memory & packaging / Advanced packaging · ibiden.com

Ibiden manufactures IC package substrates, including ABF-based substrates used in advanced semiconductor packaging for high-performance processors.

AI Infra 100 · rank 40 · score 91

Scores, AI Core (of 10)

Deployment10
Production8
Commercials10
Progress10
Technology8
Positioning10
Firepower8
Leverage10

Darker bar: ahead of the other company on that measure.

Positioning

The leading maker of high-end IC package substrates under GPUs and AI CPUs; demand outpaces supply, and its own constraint is ABF film from a single supplier, which makes it the substrate bottleneck in company form.

Latest signals

  • Ibiden plans a KRW 1.28 trillion investment to expand AI-server CPU substrate capacityThe Elec
  • Nvidia is expanding AI infrastructure manufacturing capacity with six supply-chain partners.Yicai
  • ASE, PTI, Amkor, TSMC, SK hynix, Ibiden, and Unimicron are expanding advanced-packaging capacity.Electronics Weekly

5 signals name Ibiden.

Facts, with sources

  • ABF film not secured for upsideIbiden Q1 release via Envalith, I-Connect007, Nikhs
  • 26.4Ibiden Q1 release via Envalith, I-Connect007, Nikhs
  • JPY 500000000000Ibiden interim report

4 facts on file.

Unimicron →

Taoyuan, Taoyuan, Taiwan · AI Core · Fabrication, memory & packaging / Advanced packaging · unimicron.com

Unimicron supplies high-end ABF substrates used by semiconductor and accelerator manufacturers in advanced packaging.

AI Infra 100 · rank 80 · score 86

Scores, AI Core (of 10)

Deployment10
Production10
Commercials10
Progress10
Technology6
Positioning8
Firepower8
Leverage10

Darker bar: ahead of the other company on that measure.

Positioning

The largest Taiwanese IC-substrate and PCB maker, main ABF substrate supplier to four US hyperscalers' custom ASICs and to Nvidia and Google; the volume producer under the Ibiden-class high end.

Latest signals

  • ASE, PTI, Amkor, TSMC, SK hynix, Ibiden, and Unimicron are expanding advanced-packaging capacity.Electronics Weekly

1 signals name Unimicron.

Facts, with sources

  • >500mUnimicron via BigGo
  • NT$ 42890000000Unimicron via BigGo
  • High-end ABF substrate sold out; capacity full through year-endDigiTimes

3 facts on file.

More comparisons

Questions this page answers

Ibiden or Unimicron: which is ahead in ai core?

Ibiden ranks 40 on the AI Infra 100 with a score of 91; Unimicron ranks 80 with 86. Ibiden is ahead on technology and positioning. Unimicron is ahead on production. Level on deployment, commercials, progress, firepower and leverage. Ibiden is based in Ogaki, Japan, Unimicron in Taoyuan, Taiwan. Ibiden is named in 5 signals and Unimicron in 1.

How do Ibiden and Unimicron compare?

Ibiden ranks 40 on the AI Infra 100 with a score of 91; Unimicron ranks 80 with 86. Ibiden is ahead on technology and positioning. Unimicron is ahead on production. Level on deployment, commercials, progress, firepower and leverage. Ibiden is based in Ogaki, Japan, Unimicron in Taoyuan, Taiwan. Ibiden is named in 5 signals and Unimicron in 1. Both company files carry the scores on eight measures, the facts with sources and the latest signals.

Every comparison here comes from the same files members use every day.

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