Recent technologies of organic film devices are reviewed. New technolo
gies of fabrication and characterization of organic thin films, electr
o-mechanical conversion materials, and applications for electrical and
optical devices are discussed. In this review paper, especially organ
ic light emitting diodes, tunneling junctions using polyimide Langmuir
-Blodgett films, tunneling spectroscopy and high-density recording, pl
astic actuators using conducting polymers, molecular self-assembly pro
cess for fabricating organic thin film devices are reviewed.