Photomask and reticle supply chain
BOTTLENECKLasertec holds sole actinic inspection for EUV masks and no qualified second source exists.
Patterned glass templates that project circuit images onto silicon wafers during lithography. EUV masks require extreme precision and novel materials, creating bottlenecks distinct from wafer fabrication itself. AGC/Hoya control EUV mask blanks; Lasertec holds sole actinic inspection; IMS/NuFlare split advanced mask writing.
Photomasks (reticles) are patterned glass or ULE templates exposing circuit patterns onto wafers in the lithography tool; a distinct, concentrated supply chain covering mask blanks, mask writing, mask inspection, pellicles, and merchant mask shops.
What the evidence shows
Merchant mask shops are concentrated: Tekscend, DNP, Photronics, SK-Electronics serve fabless/IDM; Japan has two leading advanced-node shops.
semiconductorx.comPhotomask manufacturing lead times can exceed one month due to re-entrant job shop production loops.
sciencedirect.comSouth Korean firms have commercialized second-generation EUV pellicles, disrupting a traditional monopoly and reducing costs.
openpr.comWho controls it
Where it sits in the stack
Takes in: GDSII layout data, mask blanks (quartz/ULE), e-beam resist
Sends on: Patterned reticle loaded into scanner for wafer exposure
Related nodes
Full scorecard, owner shares, supply edges and the full tracked roster are in the desk letter.
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