Asian Conference on Organic Electronics (A-COE) serves as a premier platform for exchange of cutting-edge activities and new ideas developed by Asian researchers for organic electronics. Since its inauguration in 2009 when the 1st A-COE was held in Kyushu, Japan, this yearly event had been held while changing its venue in the order of Japan, Korea, and Taiwan. In 2015, China also joined A-COE as a new host, further corroborating A-COE as truly a key Asian event in organic electronics. Its topics include but are not limited to organic light-emitting diodes (OLEDs) for display and lighting, solar cells based on organic or similar emerging materials, organic thin-film transistors and integrated circuits made thereof, organic sensors, flexible and stretchable electronics, and, not to mention, fundamental physics and chemistry of organic semiconductors.