Redesigned EUV lithography system promises cheaper, smaller chips
A new optical system design for high-numerical aperture extreme ultraviolet (high-NA EUV) lithography could enable the production of smaller, more energy-efficient computer chips at a significantly lower cost.
Scientists are exploring advanced methods like extreme ultraviolet (EUV) lithography to create increasingly smaller computer chips essential for technologies ranging from AI data centers to medical devices. However, current EUV lithography methods face significant physics, engineering, and financial hurdles, limiting their widespread adoption and scalability.
Professor Tsumoru Shintake from the Okinawa Institute of Science and Technology (OIST) has proposed a novel redesign of the illumination and projection systems used in high-NA EUV lithography. Simulations indicate this new approach could mitigate problematic optical effects, improve resolution, and facilitate the manufacturing of smaller-scale computer chips more affordably than existing techniques.
Shintake's design aims to reduce the cost of EUV lithography machines, which currently run into hundreds of millions of euros. The proposed system is expected to achieve fine, 2-3 nanometer scale details at a fraction of the cost of current state-of-the-art machines. This advancement is particularly relevant for the growing demands of artificial intelligence, as denser chips allow for shorter signal paths, leading to reduced energy loss and lower power consumption per computation.
Denser chips also generate less heat, further decreasing the energy required for cooling data centers. The new design evolved from early research exploring in-line optical configurations, which faced challenges with distortions and blurring as NA increased. Shintake's solution involves a two-stage system with carefully arranged concave-convex mirrors designed to cancel out optical defects while maintaining high NA.
While simulations assume perfect mirrors, the next step involves building a physical prototype. Shintake's team is actively developing the necessary EUV hardware, with the goal of producing high-performance EUV lithography systems at a significantly reduced price point, potentially a quarter of current market costs. This could unlock possibilities for higher-density memory and more efficient logic chips.
This development in high-NA EUV lithography addresses critical cost and complexity barriers in advanced semiconductor manufacturing. By enabling finer feature sizes more affordably, it supports the creation of more powerful and energy-efficient chips, crucial for scaling AI and other demanding computational tasks. This innovation aligns with the broader industry push for miniaturization and improved performance in electronic components.
Edited by the news editor with AI from the original report — please refer to the original source.