Certified Professionals

Credential ID: https://esdcertification.esda.org/c/5a90cdf7113e4fa49ead209a169de601

Yong Hoon (Joshua) Yoo has been involved in the static control industry since 1994 for ionization, ESD measurement and high voltage power business operation in semiconductor, flat panel displays and automotive industry. He has been a member of EOS/ESD Association since 2000 and served as an Elected Board of Director in 2016 - 2018. He is the founder and president of Korea EOS/ESD Association since 2011. He is a member of Institute of Electronics and Information Engineers (Korean IEEE) since 2021. He is serving industry as Korea President of International Semiconductor Executive Summits (ISES) since 2024. 

He started his volunteering activities on EOS/ESD Association since 2013 as an active working group members and technical program committee members of annual symposium for multiple events of ESD Association. With his leadership, Korea EOS/ESD Association very strongly presents and annual events over 10 years. He is pioneer for flat panel display (FPD) static issue analysis and resolved problems. In recently, he found a root cause of ESD yield losses in AI chip manufacturing environment and improved yield over double digits.

He is an iNARTE certified ESD Engineer in 2007 and the EOS/ESD Association certified Professional ESD Program Manager in 2011. He has 14 patents for ionization system and ESD testing technologies.

Credential ID: https://esdcertification.esda.org/en/c/de90a381cc6b4c1fa1b4d559a836bad8

Younchul Oh is the Contamination Control Group Leader for Samsung Mobile Display Co., Ltd.  He is responsible for ESD control, Particle defect control and Cleanroom operations on the OLED and LCD manufacturing lines.   Prior to this role, Younchul was an engineer at Samsung Electronics where he was responsible for Ultra-Pure Water. Younchul Oh has a Ph.D. Degree in Chemistry from Iowa State University in Ames, Iowa.

Outside of work, Younchul enjoys spending time with his wife, two kids, and books.

Credential ID: https://esdcertification.esda.org/en/c/7e0178abf43a4bafb49fd8528ebf0db7