JSR supplies semiconductor lithography materials, including photoresists and metal-oxide resists through JSR and Inpria. Its planned plants for TSMC and Samsung directly support advanced semiconductor fabrication.
The photoresist leader (used in about a third of the world's chips), the only supplier with both chemically amplified and metal-oxide EUV resist platforms (Inpria), taken private by the Japanese state fund JIC in 2024 as a chokepoint asset; building resist plants beside Samsung and, at TSMC's request, in Taiwan.
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JSR supplies semiconductor lithography materials, including photoresists and metal-oxide resists through JSR and Inpria. Its planned plants for TSMC and Samsung directly support advanced semiconductor fabrication. The photoresist leader (used in about a third of the world's chips), the only supplier with both chemically amplified and metal-oxide EUV resist platforms (Inpria), taken private by the Japanese state fund JIC in 2024 as a chokepoint asset; building resist plants beside Samsung and, at TSMC's request, in Taiwan.
JSR ranks 34 of 100 on the AI Infra 100 (November 2026 edition) with a score of 93 out of 100, in Lithography (Semiconductor equipment, materials & critical inputs). Assessment by Frontier Tech Intelligence.
ASML (rank 3), Trumpf (rank 36).
JSR is based in Tokyo, Tokyo, Japan.
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