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Improved Accuracy And Robustness For Advanced DRAM With Tunable Multi-Wavelength Imaging Scatterometry Overlay Metrology


By Honggoo Lee, Sangjun Han, Minhyung Hong, Jieun Lee, Dongyoung Lee, Ahlin Choi and Chanha Park of SK Hynix, and Dohwa Lee, Seongjae Lee, Jungtae Lee, Jeongpyo Lee, DongSub Choi, Sanghuck Jeon, Zephyr Liu, Hao Mei, Tal Marciano, Eitan Hajaj, Lilach Saltoun, Dana Klein, Eran Amit, Anna Golotsvan, Wayne Zhou, Eitan Herzl, Roie Volkovich and John C. Robinson of KLA. Abstract Overlay process c... » read more