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

Optimizing VSB Shot Count For Curvilinear Masks


The increased photomask write time using a variable-shape e-beam (VSB) writer has been a barrier to the adoption of inverse lithography technology (ILT) beyond the limited usage for hot spots. The second installment of this video blog looked at the challenge in depth. In this five-minute panel video with industry luminaries, Ezequiel Russell describes the collaborative study between his company... » read more

What’s Next In Fab Tool Technologies?


Experts at the Table: Semiconductor Engineering sat down to discuss extreme ultraviolet (EUV) lithography and other next-generation fab technologies with Jerry Chen, head of global business development for manufacturing & industrials at Nvidia; David Fried, vice president of computational products at Lam Research; Mark Shirey, vice president of marketing and applications at KLA; and Aki Fuj... » read more

Applications, Challenges For Using AI In Fabs


Experts at the Table: Semiconductor Engineering sat down to discuss chip scaling, transistors, new architectures, and packaging with Jerry Chen, head of global business development for manufacturing & industrials at Nvidia; David Fried, vice president of computational products at Lam Research; Mark Shirey, vice president of marketing and applications at KLA; and Aki Fujimura, CEO of D2S. Wh... » read more

AI And High-NA EUV At 3/2/1nm


Semiconductor Engineering sat down to discuss lithography and photomask issues with Bryan Kasprowicz, director of technology and strategy and a distinguished member of the technical staff at Photronics; Harry Levinson, principal at HJL Lithography; Noriaki Nakayamada, senior technologist at NuFlare; and Aki Fujimura, chief executive of D2S. What follows are excerpts of that conversation. To vie... » read more

What’s Next In AI, Chips And Masks


Aki Fujimura, chief executive of D2S, sat down with Semiconductor Engineering to talk about AI and Moore’s Law, lithography, and photomask technologies. What follows are excerpts of that conversation. SE: In the eBeam Initiative’s recent Luminary Survey, the participants had some interesting observations about the outlook for the photomask market. What were those observations? Fujimur... » read more

How And Where ML Is Being Used In IC Manufacturing


Semiconductor Engineering sat down to discuss the issues and challenges with machine learning in semiconductor manufacturing with Kurt Ronse, director of the advanced lithography program at Imec; Yudong Hao, senior director of marketing at Onto Innovation; Romain Roux, data scientist at Mycronic; and Aki Fujimura, chief executive of D2S. What follows are excerpts of that conversation. Part one ... » read more

What Machine Learning Can Do In Fabs


Semiconductor Engineering sat down to discuss the issues and challenges with machine learning in semiconductor manufacturing with Kurt Ronse, director of the advanced lithography program at Imec; Yudong Hao, senior director of marketing at Onto Innovation; Romain Roux, data scientist at Mycronic; and Aki Fujimura, chief executive of D2S. What follows are excerpts of that conversation. L-R:... » read more

Making And Protecting Advanced Masks


Semiconductor Engineering sat down to discuss lithography and photomask trends with Bryan Kasprowicz, director of technology and strategy and a distinguished member of the technical staff at Photronics; Thomas Scheruebl, director of strategic business development and product strategy at Zeiss; Noriaki Nakayamada, senior technologist at NuFlare; and Aki Fujimura, chief executive of D2S. What fol... » read more

Using Digital Twins And DL In Lithography


Leo Pang, chief product officer and executive vice president at D2S, looks at the results of inverse lithography technology at advanced nodes using curvilinear patterns, and how that can be combined with a digital twin and deep learning speed up time to market and reduce cost. » read more

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