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From Wikipedia, the free encyclopedia

Dr. Frank Marion Wanlass (May 17, 1933 in Thatcher, AZ – September 9, 2010 in Santa Clara, California) was an American electrical engineer. He is best known for inventing CMOS (complementary MOS) logic with Chih-Tang Sah in 1963. CMOS has since become the standard semiconductor device fabrication process for MOSFETs (metal-oxide-semiconductor field-effect transistors).[1]

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Transcription

Biography

He obtained his PhD from the University of Utah. Wanlass invented CMOS (complementary MOS) logic circuits with Chih-Tang Sah in 1963, while working at Fairchild Semiconductor.[2] Wanlass was given U.S. patent #3,356,858 for "Low Stand-By Power Complementary Field Effect Circuitry" in 1967.[3]

In 1963, while studying MOSFET (metal-oxide-semiconductor field-effect transistor) structures, he noted the movement of charge through oxide onto a gate. While he did not pursue it, this idea would later become the basis for EPROM (erasable programmable read-only memory) technology.[4]

In 1964, Wanlass moved to General Microelectronics (GMe), where he made the first commercial MOS integrated circuits, and a year later to General Instrument Microelectronics Division in New York,[5] where he developed four-phase logic.[6]

He was also remembered for his contribution to solving threshold voltage stability in MOS transistors due to sodium ion drift.

In 1991, Wanlass was awarded the IEEE Solid-State Circuits Award.[7]

In 2009, on the 50th anniversary of both the MOSFET and the integrated circuit, Frank Wanlass was inducted into the National Inventors Hall of Fame for his invention of CMOS logic. He was part of the 2009 class celebrating semiconductor pioneers, along with inventors of semiconductor technologies such as the MOSFET (Mohamed Atalla and Dawon Kahng), planar process (Jean Hoerni), EPROM (Dov Frohman) and molecular beam epitaxy (Alfred Y. Cho).[8][1]

Wanlass died on 9 September 2010.

References

  1. ^ a b "Frank Wanlass". National Inventors Hall of Fame. Retrieved 17 August 2019.
  2. ^ "1963: Complementary MOS Circuit Configuration is Invented". Computer History Museum. Retrieved 6 July 2019.
  3. ^ IC Knowledge - History of the Integrated Circuit - 1960s Archived 2007-04-19 at the Wayback Machine
  4. ^ "People". The Silicon Engine. Computer History Museum. Retrieved 17 August 2019.
  5. ^ Bob Johnstone (1999). We were burning: Japanese entrepreneurs and the forging of the electronic age. Basic Books. pp. 47–48. ISBN 978-0-465-09118-8.
  6. ^ Ross Knox Bassett (2007). To the Digital Age: Research Labs, Start-up Companies, and the Rise of MOS Technology. JHU Press. pp. 51, 129–130. ISBN 978-0-8018-8639-3.
  7. ^ List of Solid-State Circuits Award winners
  8. ^ "Inventors Hall of Fame Class of 2009". IPWatchdog.com | Patents & Patent Law. 2009-02-19. Retrieved 2017-04-12.

External links


This page was last edited on 11 October 2019, at 01:50
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