ASML and TSMC Lead Industry Shift to 12-Inch Photomasks for High-NA EUV Lithography

ASML and TSMC are spearheading an industry-wide transition to larger 12-inch photomasks for High Numerical Aperture (High-NA) EUV lithography, a critical step for the next generation of semiconductor scaling. This move, joined by Samsung and already pioneered by Intel, aims to overcome manufacturing constraints as AI and high-performance computing drive demand for denser and more complex chips. The larger masks will help restore a wider exposure field, removing stitching constraints and enhancing High-NA EUV's suitability for large dies used in AI.