John Karidis
John Karidis | |
|---|---|
| Born | Template:Birth date Greece |
| Died | March 5, 2012 (aged 53) |
| Occupation(s) | Mechanical engineer, inventor |
| Years active | 1976–2012 |
| Known for | Butterfly keyboard for IBM ThinkPad 701, Hummingbird minipositioner, Start-Gap Wear Leveling technique |
John Karidis (April 14, 1958 – March 5, 2012) was a Greek-American mechanical engineer, inventor, and Emeritus Distinguished Engineer at the IBM T.J. Watson Research Center. He obtained his BS, MS, and PhD degrees in Mechanical Engineering from Penn State University between 1976 and 1983.
Karidis was credited with 83 U.S. patents spanning innovations in computer user interfaces, thermal management solutions, printing technology, orthopedic devices, and memory architectures.
Among his most notable achievements is the design of the butterfly keyboard for the IBM ThinkPad 701. This patented mechanism consisted of two interlocking sections that unfolded horizontally to provide a wider typing surface when the laptop lid was raised. Launched in 1995, the "Butterfly" keyboard quickly gained recognition and is now part of the permanent collection at New York's Museum of Modern Art. It was also featured in the movie GoldenEye.
Following the ThinkPad 701, IBM ceased production of the Butterfly keyboard. In a 2001 interview, Karidis explained that advancements in larger display sizes rendered the design less necessary but emphasized its suitability for devices with smaller screens such as netbooks. The concept has since sparked interest for potential revival in compact computing devices.
Karidis also developed one of the fastest robotic probing systems known as the "Hummingbird minipositioner," capable of testing between 40 and 100 contacts per second on intricate multi-chip modules. This technology is incorporated into engineering curricula at institutions including Johns Hopkins University, University of Michigan, and McGill University.
Another key contribution from Karidis was the invention of the "Start-Gap Wear Leveling" technique for persistent memory technologies. This approach earned the 2021 NVMW Persistent Impact Prize due to its effectiveness and has become widely adopted in research focused on low-latency non-volatile memory.
To honor his legacy, Penn State University created the Dr. John P. Karidis Department Head's Award for Research Achievement in Mechanical Engineering, which recognizes students demonstrating significant progress in research within their disciplines.