China has introduced its first national-level standard focused on EUV photoresists, marking a significant milestone in its drive to localize critical semiconductor materials. The Standardization Administration of China has released the draft Test Methods for EUV Photoresists for a month-long public consultation, inviting feedback from academia and industry before finalization.
The standard was jointly drafted by Shanghai University, Zhangjiang Laboratory, Shanghai Huali Microelectronics Corp. (HLMC), and Shanghai Micro Electronics Equipment (SMEE), together with other leading research institutions and manufacturers. Bringing these stakeholders together signals a coordinated effort to accelerate domestic innovation, align testing practices, and strengthen the materials supply chain that underpins cutting-edge chip manufacturing.
EUV photoresists are highly specialized light-sensitive materials used in extreme ultraviolet lithography, the process essential for fabricating the smallest, most advanced semiconductor features. By defining how these materials should be tested, China aims to unify evaluation methods across labs, suppliers, and fabs—reducing variability, improving quality, and shortening the time from R&D to mass production.
What this new standard is expected to address
– Consistent test methods for core performance metrics such as sensitivity, resolution, line-edge/line-width roughness, and defectivity
– Etch resistance and pattern fidelity to ensure high-yield, high-precision pattern transfer
– Outgassing and contamination controls to maintain compatibility with EUV exposure tools and ultra-clean environments
– Reliability and stability under EUV exposure to support advanced nodes
Why it matters
– Accelerates domestic R&D: Shared benchmarks help researchers and suppliers iterate faster, compare results reliably, and scale promising chemistries.
– Enhances manufacturing readiness: Foundries can qualify materials more efficiently when test data follow a common national framework.
– Builds ecosystem resilience: Standards make it easier for multiple suppliers to meet the same bar, strengthening the supply chain for advanced lithography.
– Encourages collaboration: A transparent consultation process invites input from universities, toolmakers, materials firms, and chip manufacturers, helping align goals across the industry.
For China’s semiconductor sector, a standardized approach to evaluating EUV resists is a foundational step. It helps ensure that material performance is measurable, reproducible, and compatible with high-volume manufacturing requirements. It also lowers barriers for new entrants in the materials space, who can develop products against clear, nationally recognized criteria.
The one-month public consultation period provides a window for stakeholders to refine technical definitions, measurement protocols, and acceptance thresholds—details that ultimately determine how efficiently the industry can adopt next-generation photoresists. Once finalized, the standard can serve as a reference for qualification programs, procurement specifications, and future regulations tied to advanced lithography processes.
Looking ahead, this move could pave the way for additional standards covering related areas such as underlayers, developers, metrology methods, contamination control, and process integration guidelines. Together, these frameworks would help create a cohesive foundation for producing chips at the most advanced geometries.
Bottom line: By launching its first national standard for EUV photoresist testing, and opening it to public review, China is laying critical groundwork to advance homegrown materials, support leading-edge chip manufacturing, and foster a more unified, competitive semiconductor ecosystem.
