In this seminar, state-of-the-art technology development in oxide semiconductors and devices will be reviewed. Since the invention of IGZO by Prof. Hosono in 2004, the development of IGZO TFTs has been accelerated by material optimization, processing conditions, and careful architecture designs such as self-aligned structures. The baseline of the current IGZO backplane for AMOLED will be addressed, including architecture and process optimization. An in-depth discussion on the origin of photo-bias instabilities of oxide TFTs, which is critical for their implementation in AMOLED products, will also be provided. Finally, the potential application of oxide TFTs into monolithic three-dimensional devices will be suggested, which can be a critical ingredient for future sensing and IoT systems.
Jae Kyeong Jeong received his B.S., M.S., and Ph.D. degrees in material science and engineering from Seoul National University, Seoul, Korea, in 1997, 1999, and 2002, respectively. In 2003, he was a post-doctoral researcher at the University of Illinois at Urbana-Champaign. He joined Samsung SDI Corp. as a senior engineer in 2004, where he performed research regarding the design and characterization of poly-Si and IGZO TFTs for AMOLED displays. In 2008, he successfully developed the world largest 12.1-in. oxide-TFT-driven AMOLED display as a project leader. The paper reporting this work was selected for a Distinguished Paper Award at Display Week 2008. In 2009, he joined Inha University in Incheon, Korea, as an assistant professor, where he continued work in metal-oxide semiconductors and related field-effect transistors. Since September 2015, he has been a professor in the department of electronic engineering at Hanyang University. He has more than 165 authored SCI journal papers and 112 international patents. He is an editorial board member for Scientific Reports and Journal of Information Display. He has received many awards, including a Merck Young Scientist Award (2012) and a President Award from KDIA (2014).