Study of mask structure for 45-nm node based on manufacturability and lithographic performance

Jong Gul Doh; Cheol Hong Park; Yong Seung Moon; Bo Hye Kim; Sung Won Kwon; Sun Young Choi; Sung Hyuck Kim; Seong Yoon Kim; Byung Gook Kim; Sang Gyun Woo; Han Ku Cho

doi:10.1117/12.728977

14 May 2007 Study of mask structure for 45-nm node based on manufacturability and lithographic performance

Jong Gul Doh, Cheol Hong Park, Yong Seung Moon, Bo Hye Kim, Sung Won Kwon, Sun Young Choi, Sung Hyuck Kim, Seong Yoon Kim, Byung Gook Kim, Sang Gyun Woo, Han Ku Cho

Author Affiliations +

Proceedings Volume 6607, Photomask and Next-Generation Lithography Mask Technology XIV; 66071U (2007) https://doi.org/10.1117/12.728977
Event: Photomask and Next-Generation Lithography Mask Technology XIV, 2007, Yokohama, Japan

Abstract

As design rule has decreased, blank type or photo resist, which meets requirement of resolution, has been developed. HT PSM mainly used to pattern small line width has no longer advantages for immersion wafer process. It makes binary mask to be gradually used for mask production. Comparing to HT PSM, the production of binary mask has a relatively simple process. However, we may consider optical density, PR or Cr thickness, etch selectivity, and ID bias related to linearity for applying binary mask below sub-45nm. In this paper, we will compare and analyze difference between actual manufacture and theoretical optic level such as optical density. Finally, based on our experiment, optimal combination of photoresists and blanks which can realize sub-45nm node will be discussed.

Citation Download Citation

Jong Gul Doh, Cheol Hong Park, Yong Seung Moon, Bo Hye Kim, Sung Won Kwon, Sun Young Choi, Sung Hyuck Kim, Seong Yoon Kim, Byung Gook Kim, Sang Gyun Woo, and Han Ku Cho "Study of mask structure for 45-nm node based on manufacturability and lithographic performance", Proc. SPIE 6607, Photomask and Next-Generation Lithography Mask Technology XIV, 66071U (14 May 2007); https://doi.org/10.1117/12.728977

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KEYWORDS

Photomasks

Binary data

Chromium

Etching

Absorbance

Lithography

Manufacturing

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