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Home > Professor
      Associate Professor : Yang-Kyu Choi


Division of Electrical Engineering,
Department of Electrical Engineering and Computer Science
Korea Advanced Institute of Science and Technology
373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
Office) Nano Fab Center #511
Tel) 042-350-3477
E-mail) ykchoi_at_ee.kaist.ac.kr
 
Education
2006 - 2010 :
Associate Professor at KAIST
2004 - 2005 :
Assistant Professor at KAIST
2001 - 2003 :
Post-doctoral researcher in the University of California, Berkeley
- Nano-scale novel devices in the department of Electrical Engineering and Computer Sciences
(Advisor : Jeffrey Bokor)
- Nano-scale Bio-electronics and Bio-Sensors in the department of Bio-Engineering
(Advisor : Luke P. Lee)
- Nano-catalysts in the department of Chemistry
(Advisor : G.A. Somorjai)
1999 - 2001 :

University of California, Berkeley
- Ph.D. in Electrical Engineering and Computer Sciences (December 2001)
- Research Advisor : Chenming Hu
- Thesis : Nanofabrication Technologies and Novel Device Structures for Nanoscale CMOS
- Demonstration of Sub-30nm ultra-thin body MOSFET and sub-20nm double gate FinFET
(Both devices got much attraction from industries and have been fabricated by TSMC, Intel, AMD, Motorola, Texas Instrument, and IBM now).
- Minors : Optical-electronics (Inside) and physics (Outside)
- Broad courseworks including : IC processing and layout, quantum electronics,
Light-wave devices, optics, electro-magnetics, MEMS, flat panel displays, device physics,
quantum theory of solid, analog and digital IC design

1997 - 1999 :
University of California, Berkeley
- M.S. in Electrical Engineering, December 1999
- Thesis : Ultra-thin-body SOI MOSFET for Deep-sub-tenth Micron Era
1985 - 1991 :
Seoul National University (Korea)
- M.S. in Physics, February 1991
- B.S. in Physics Education, February 1989
Professional Experience
2004 - 2010 :
Assistant Professor at KAIST
2001 - 2003 :
Postdoctoral Researcher
1999 - 2001 :

Hynix (Hyundai Electronics), Inc Korea
- Section manager of 2nd generation synchronous 64M DRAM
- 5th generation 4M DRAM development
- 2nd generation~5th Generation 16M DRAM development
- 4M Video DRAM and 8M Graphics RAM development
- 64M DRAM development
- 256M DRAM development
- 1G DRAM development
- 64M DRAM transference for mass production
- Device characterization and failure analysis
- Reliability test
- Yield analysis and control of mass production
- Experts in the process integration
- 1993 ~1996 : Technical coordinator and section manager for joint development of 64M DRAM
   with Fujitsu
- Research experiences from the very beginning stage of device development to mass production
- Coordinator between circuit design and unit process development

Awards and Honors
U.S. 5,500,080, Yang Kyu Choi, "Process of Forming Contact Holes", 1996.
U.S. 5,510,289, Yang Kyu Choi, "Method for Fabricating Stack Capacitor of Semiconductor Device", 1996.
U.S. 5,466,640, Yang Kyu Choi, "Method for Forming a Metal Wire of Semiconductor Device", 1995.
U.S. 5,783,499, Yang Kyu Choi, "Method for the Fabrication of a Semiconductor Device", 1998.
U.S. 5,804,504, Yang Kyu Choi, "Method for Forming Wiring of Semiconductor Device" , 1998.
U.S. 6,413,802, C. Hu, T.-J. King, V. Subramanian, L. Chang, W.-C. Lee, X. Huang, J. Kedzierski, N. Lindert,
Y.-K. Choi,“FinFET transistor structures having a double gate channel extending vertically from a substrate and methods of manufacture”, 2002.
Professor Yang-Kyu Choi received an award "The Scientist of The Month for July 2006.
* 5 Japan, 5 British, 5 France, 5 German, 99 Korea patents.
 

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