1986 …2021

Research activity per year

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Personal profile

Research Interests

Flash Memory Devices and Circuits, Integrated Circuit Systems, 2D、 3D Semiconductor Devices


1982~1986, had been in Memory division of Toshiba Corporation in charge of DRAM device development from 64K 

1986~1987, moved to R&D center in Toshiba; Section leader of Non-volatile memory

1987~1990 made basic research of NAND Flash memory for the first time in the world, group leader of NAND Flash group

1990~2004, responsible to the development of NAND Flash memory from 4M to 8Gbit, project leader of the NAND development combined research center and memory division

2004~2006, moved to the Flash business strategy group as a chief specialist in memory division

2004~2006, IEEE Non-volatile Memory workshop Panelist

2004~2006, ITRS road map of Japanese committee

2004~2008, IEEE Non-volatile workshop committee

2005 ~ 2006, assigned as the guest professor of Beijing institute of technology

2005, Tutorial of IRPS

2006~ Chair Professor of Tsing Hua University

2006~ consultant of NAND Flash memory development in Power Chip Corporation

2009, Invited Lecture in Chiba University, Tokyo, Japan

2009, Invited Lecture in Nagoya University, Nagoya, Japan

2009, Technology Rump Session R-1: The Path Towards Sub 30nm NVM, Moderators, Symposium on VLSI Technology

2010, Invited Lecture in Osaka University, Osaka, Japan

2010, Advanced Metallization Conference, Tokyo, Japan

Education/Academic qualification

PhD, Nagoya University

External positions


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