# East Asia Brief — Semiconductors & AI Hardware: Japan

Memory, foundry, equipment and materials across Korea, China and Japan — and the export rules that bound them.

- [Japan mask blank makers qualify High-NA EUV substrates for sub-2nm chips](https://eastasiabrief.com/semiconductors/japan-mask-blank-makers-qualify-high-na-euv-substrates-96) — HOYA and AGC accelerate extreme low thermal expansion blank deliveries to foundries and R&D consortia as High-NA EUV lithography enters pilot production. *(August 28, 2026; Semiconductors · Japan · HOYA Corporation, AGC Inc., Dai Nippon Printing)*
- [Japanese epoxy mold makers reformulate resins to tame warpage in 16-high memory](https://eastasiabrief.com/semiconductors/japanese-epoxy-mold-makers-reformulate-resins-tame-warpage-16-94) — Chemical suppliers modify spherical silica filler morphology and polymer matrices to counter extreme thermomechanical stress across 16-die vertical stacks. *(August 28, 2026; Semiconductors · Japan · Sumitomo Bakelite, Resonac, Panasonic Industry, Shin-Etsu Chemical, Namics, SK hynix, Samsung Electronics)*
- [Ibiden and Shinko ramp high-layer FC-BGA lines as AI server package sizes expand](https://eastasiabrief.com/semiconductors/ibiden-shinko-ramp-high-layer-fc-bga-lines-ai-43) — Japanese substrate leaders accelerate volume production at new domestic facilities to meet multi-chip packaging demand from global AI accelerator designers. *(August 28, 2026; Semiconductors · Japan · Ibiden, Shinko Electric Industries, Ajinomoto, Mitsubishi Electric)*
- [Tokyo Electron Deploys Cryogenic Etch Systems to Challenge US Grip on 3D NAND](https://eastasiabrief.com/semiconductors/tokyo-electron-deploys-cryogenic-etch-systems-challenge-us-grip-36) — The Japanese toolmaker is qualifying high-selectivity dielectric etch platforms across South Korean and Japanese memory lines as 3D NAND architectures surpass… *(August 28, 2026; Semiconductors · Japan · Tokyo Electron, Lam Research, Samsung Electronics, SK hynix, Kioxia Corporation, Micron Technology)*
- [Rapidus begins trial runs on 2nm pilot line in Hokkaido ahead of 2027 target](https://eastasiabrief.com/semiconductors/rapidus-begins-trial-runs-2nm-pilot-line-hokkaido-ahead-15) — Japan's state-backed foundry venture powers up cleanroom tools in Chitose, testing gate-all-around transistor yields with domestic equipment makers. *(August 28, 2026; Semiconductors · Japan · Rapidus, Tokyo Electron, Resonac Holdings, IBM)*

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Publisher: East Asia Brief — https://eastasiabrief.com/