Idemitsu Kosan is a Japanese company, founded in 1911, to engage in oil distribution, and over the years they have gained experience in fuel products and basic chemicals, plastics, electronic materials and OLED materials. Idemitsu is best known for its fluorescent blue emitter and host.
Idemitsu Kosan are working towards OLED materials together with BOE Display, Merck, Sony, LG Display, Mitsui chemicals, Doosan and UDC. Together with Panasonic, the company launched an OLED lighting joint-venture called Panasonic Idemitsu OLED Lighting (PIOL), but PIOL was dissolved when Panasonic withdrew from the OLED lighting market.
In January 2016 we posted an interview with Idemitsu's electronic materials chief.