Lithography’s next leap comes with an awkward catch. High-NA EUV scanners expose a smaller field than the machines they replace, so the glass stencil at the heart of every chip pattern may have to grow. ASML and TSMC are leading an effort to make that reticle switch an industry-wide standard instead of a company-by-company scramble.
Chipmakers have printed from 6-inch masks since the 1990s. A larger reticle in the 12-inch format would let scanners run faster, cut the cost of each wafer and free designers from the stitching tricks now used to fit big dies into a small exposure field. ASML argues those gains compound as High-NA moves into more fabs, which should pull down the price of tomorrow’s leading-edge chips.
TSMC attached a timeline to its own plans. High-NA tools enter volume service at advanced nodes in 2030, with demand for the technology growing as AI-era transistor architectures stack more complexity onto each layer. A pilot line to prove out the larger masks is slated for 2031.
The company expects scanners built around the 12-inch format to reach advanced-node production near 2033. ASML chief executive Christophe Fouquet predicts High-NA take-up will build progressively, first on existing 6-inch masks and later on the bigger reticles, while TSMC chairman C.C. Wei called the switch a shared industry problem that no single company should solve alone.
Samsung is already signing on to the mask effort, and Intel has pushed for the larger format for years. Mask writers, inspection gear, materials and factory automation will all have to follow the reticle into its new size.
