Organic electroluminescence device, its manufacturing method and board for display device used therefor

摘要

An organic electroluminescence (EL) device having an image pattern includes a substrate, a first electrode formed on the substrate, a light emitting layer formed on the first electrode and a second electrode which is formed on the light emitting layer and oxygen-transmittable. The light-emitting layer includes an oxide layer selectively formed by the selective photo-oxidation using light and oxygen reached through the second electrode. The oxide layer serves as a non-light-emitting region. In such a configuration, the reliable organic EL device with high contrast can be provided in a short time from its order to completion.