Junji Adachi

Co-Founder & CSO | Kyulux Inc.
Junji Adachi
Abstract

Kyumatic, a Materials Informatics System, Accelerates Commercialization of Hyperfluorescence™

Hyperfluorescence™ (HF) is now widely recognized as the fourth generation of OLED emitting technology. HF provides highly efficient and pure colour with narrow emission spectrum without using any rare metals such as iridium and platinum. HF combines Thermally Activated Delayed Fluorescence (TADF) and fluorescence to provide four times higher emission efficiency than fluorescence. Kyulux had successfully commercialized the world’s first HF display with the PMOLED display partner in 2020. In early 2021, the basic patent of HF had been transferred from Kyushu University to Kyulux. And the company had secured sufficient funds for commercialization of HF by the series B-prime financing round. The company is eagerly collaborating with partners to commercialize HF displays in small and medium size AMOLED display panels.

Kyulux has been developing Kyumatic, a Materials Informatics System, based on the original system exclusively licensed from Harvard University in 2016. Kyumatic consists of quantum chemistry, machine learning, mass molecular generation, device simulations and experimental date management. And it enables the material development speed more than ten times faster. By utilizing Kyumatic, lifetimes of all red, green and blue HFs have been significantly improved by steady molecule development and device structure optimizations. Green and red HF have achieved long enough lifetime for smartphone applications.

The features of HF are further emphasized by using the top emission (TE) device structure compared with the bottom emission (BE) device. FWHM of TE-HF is narrower than 20 nm. EL performances are from two to four times superior to those of BE-HF. TE-HF enables OLED displays to be less power consumption and to cover wide color space required by BT.2020.

Biography

Junji Adachi is Co-founder and CSO of Kyulux, commercializing an innovative OLED emitting technology HyperfluorescenceTM. Before founding Kyulux in 2015, he was involved in TADF (Thermally Activated Delayed Fluorescence) development as head of strategic research planning in Kyushu University. Prior to joining Kyushu University in 2010, he was an experienced engineer and manager with 30 years in industry at Panasonic. He was involved in projects for developing and commercializing cutting edge technologies such as residential fuel cell system, organic photovoltaics and MEMS during his days in Panasonic. He was a visiting researcher in M.I.T. for non-Newtonian fluid analysis of polymer composite from 1994 to 1996.

B.S. Osaka University, Visiting Researcher, M.I.T. , Professional Engineer Japan (MOT, ICT)