Patent ID: 7893429

Claim:
A multifunction organic diode comprising a first electrode formed on a substrate, an organic thin film formed on the first electrode and having both light emission and photoconductive properties, and a second electrode formed on the organic thin film, and wherein 4-[2-[5-[4-(Diethylamino)phenyl]-4,5-dihydro-1-phenyl-1H-pyrazol-3-yl]-ethenyl]-N,N-diethylaniline is an organic material of the organic thin film, and a light emission operation is accomplished by applying a forward bias between the first electrode and the second electrode, and an optical information detection operation is accomplished by applying a reverse bias between the first electrode and the second electrode, wherein the organic thin film is an organic thin film of a mixture of a first organic material having a light emission property and a second organic material having a photoconductive property.