The High NA EUV Imperative: How Computational Lithography Solutions Enable Us To Think Smaller


The future of computing depends on miniaturization, and extreme ultraviolet lithography (EUV) is one key enabler. Until recently, we have relied on low numerical aperture (NA) EUV systems with an aperture of 0.33 to help us reduce the size of integrated circuits (ICs). As with deep ultraviolet (DUV) technology, this has begun to reach its limits. High NA EUV lithography with a 0.55 aperture rep... » read more

Computational Lithography Solutions To Enable High NA EUV


This white paper identifies and discusses the computational needs required to support the development, optimization, and implementation of high NA extreme ultraviolet (EUV) lithography. It explores the challenges associated with the increased complexity of high NA systems, proposes potential solutions, and highlights the importance of computational lithography in driving the success of advanced... » read more

Inverse lithography technology: 30 years from concept to practical, full-chip reality


Published in the Journal of Micro/Nanopatterning, Materials, and Metrology, Aug. 31, 2021. Read the full technical paper here (open access). Abstract In lithography, optical proximity and process bias/effects need to be corrected to achieve the best wafer print. Efforts to correct for these effects started with a simple bias, adding a hammer head in line-ends to prevent line-end shortening. T... » read more

Virtual Fabrication At 7/5/3nm


David Fried, vice president of computational products at Lam Research, digs into virtual fabrication at the most advanced nodes, how to create models using immature processes at new nodes, and how to fuse together data from multiple different silos. » read more

Next EUV Issue: Mask 3D Effects


As extreme ultraviolet (EUV) lithography moves closer to production, the industry is paying more attention to a problematic phenomenon called mask 3D effects. Mask 3D effects involve the photomask for EUV. In simple terms, a chipmaker designs an IC, which is translated from a file format into a photomask. The mask is a master template for a given IC design. It is placed in a lithography scan... » read more

What Happened To Inverse Lithography?


Nearly 10 years ago, the industry rolled out a potentially disruptive technique called inverse lithography technology (ILT). But ILT was ahead of its time, causing the industry to push out the technology and relegate it to niche-oriented applications. Today, though, ILT is getting new attention as the semiconductor industry pushes toward 7nm, and perhaps beyond. ILT is not a next-generation ... » read more

Computational Lithography


Computational lithography has become an integral part of design since the 130 nm process node. New techniques continue to be developed to extend the steady node shrink year after year. To read this white paper, click here. » read more

Computational Lithography


Computational lithography has become an integral part of design since the 130 nm process node. New techniques continue to be developed to extend the steady node shrink year after year. To download this white paper, click here. » read more

Ivy Bridge Settles Old Bet


Think back seven years to 2005. Those were boom times with the housing market rising, the dollar high, 65nm node chips on the horizon and EUV the great future lithography hope. EUVL was late for the next (45nm) node, but a great new idea had appeared to fill the gap—water immersion scanning with 193nm exposure! But how far could wet 193nm lithography go before EUVL or some new thing, such as ... » read more

3D-IC Impact On Computational Lithography?


While 3D devices and technology such as through-silicon vias (TSVs) definitely complicate matters in the design, verification and manufacturing space, one might assume there would also be an impact on the computational lithography tools that are used to ensure printability. Have no fear. Industry experts assure us that this is not the case. Lithography expert Chris Mack acknowledged that ... » read more