It's Not Gorilla Glass. Corning Introduces Extreme ULE with Exceptionally Low Thermal Expansion
Corning, a company well-known to many consumers as the producer of protective glass for mobile devices, has just unveiled a completely different type of glass.
The company announced its new material with ultra-low expansion, designed to withstand the increasing power of future lithography systems (Low-NA and High-NA EUV).
The new material, called Extreme ULE, will be used for the next generation of photomasks and lithographic mirrors.
A key feature of Extreme ULE is its exceptionally low thermal expansion, which ensures exceptional uniformity for photomask use. Additionally, the material's exceptional flatness and uniformity significantly reduces the waviness of photomasks, helping to limit unwanted variability for manufacturers and enabling the application of advanced coatings.