Double-Faced Organic Light-Emitting Device Using Laminate Method

We proposed a laminate method, which demonstrates a double-faced organic light emitting device. This device can display different images at both sides. To carry out a simple fabrication process, a lamination process was carried out at the interface between a refection cathode on a poly(ethylene naphthalate) (PEN) film and on organic emission layer on a glass substrate. This device yields the ultimate low-cost product and does not require a high vacuum pressure. (C) 2011 The Japan Society of Applied Physics