ASML and TSMC push High NA EUV to 12-inch photomasks, with a 2031 pilot line
ASML and TSMC opened an industry initiative to move High NA EUV lithography from 6-inch to 12-inch photomasks, targeting a mask pilot line in 2031 and production-ready systems by 2033 — a roadmap commitment, not a shipping capability. TSMC still starts High NA high-volume manufacturing on 6-inch masks in 2030, so the near-term leading-edge economics are unchanged; the larger format is where ASML's Christophe Fouquet expects scanner productivity gains and the end of stitching constraints to show up, and mask suppliers across the ecosystem now have a dated target to build toward.
Source: asml.com ↗
The transition to larger, 12-inch masks is expected to further increase fab productivity, lower chipmaking costs and remove stitching constraints, benefiting the entire semiconductor industry.
Why this matters
- → Removes stitching constraints that limit current EUV productivity.
- → Pushes leading-edge fab economics downward by 2033.
- → Coordinates mask suppliers and chipmakers on a concrete 2031-2033 roadmap.