Intel Puts High-NA EUV into Production, but Stitching Still Has Something to Prove
EE Times, Friday, September 18th, 2026
EE Times reports Intel has validated High-NA EUV in Panther Lake production while stitching and mask size remain open problems.
EE Times reports that Intel has moved High-NA EUV lithography into real manufacturing with Panther Lake, making it the first company to run the technology in production rather than in a pilot line.
The article explains why that milestone is narrower than it sounds: High-NA halves the printable field, so any die larger than a single exposure requires electrical stitching across two fields.
Intel has not yet demonstrated stitching at production yield, and larger masks remain an unsolved supply-chain problem. EE Times treats the announcement as validation of tool readiness rather than proof that High-NA is ready for large AI and server dies.