Japanese Wafer, Substrate and Photomask Suppliers
Japanese suppliers of the starting materials of chipmaking: polysilicon, silicon and compound semiconductor wafers, reclaimed wafers, mask blanks and photomasks.
- Companies11
- Equipment categories2
- Prefectures with sites13
Overview
Every chip starts from a wafer, and every lithography layer is printed from a photomask. Both are made to extreme purity and flatness, and both are areas where Japanese companies have long held strong positions.
This group covers polysilicon and wafer makers, wafer processing and reclaim companies, suppliers of SiC, GaAs and InP substrates, and the makers of mask blanks and photomasks, including those for EUV lithography.
Companies (11)
- Shin-Etsu ChemicalSilicon wafers, photoresists and photomask blanks · HQ: Chiyoda, Tokyo
- SUMCOSilicon wafers · HQ: Minato, Tokyo
- HOYAMask blanks (including EUV) and photomasks · HQ: Shinjuku, Tokyo · 1 product page
- AGCEUV mask blanks and glass materials · HQ: Chiyoda, Tokyo
- Dai Nippon Printing (DNP)Photomasks and lead frames · HQ: Shinjuku, Tokyo · 2 product pages
- TokuyamaPolysilicon and electronic chemicals · HQ: Tokyo · 1 product page
- TOPPAN HoldingsPhotomasks and FC-BGA package substrates · HQ: Taito, Tokyo · 1 product page
- Mitsubishi MaterialsHigh-purity polysilicon and electronic materials · HQ: Chiyoda, Tokyo
- RS TechnologiesReclaimed silicon wafers and prime wafers
- Mimasu Semiconductor IndustryContract silicon wafer processing and reclaimed wafers · HQ: Gunma
- Sumitomo Electric Industries (compound semiconductors)SiC epitaxial wafers and GaAs and InP substrates · HQ: Osaka, Osaka
Equipment categories
Product categories where these companies are listed, with the number of companies from this page in each.
Related reading
- Silicon wafer market
- Semiconductor materials where Japan leads
- Japanese wafer manufacturing equipment makers
Other materials sectors: Process chemicals, gases and targets · Packaging materials · Equipment parts and consumables
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Japanese Wafer, Substrate and Photomask Suppliers
Last updated: October 27, 2026