Organic electroluminescent device with color filter entirely covering flat organic electroluminescent layer

Abstract

A cathode electrode, an organic EL layer, an anode electrode, and a color filter are formed in this order on a glass substrate. Light from the organic EL layer is emitted from the side of the anode electrode, through the color filter. The color filter is formed after forming the anode electrode, the organic EL layer, and the cathode electrode, so that it does not have to be made of a material that can withstand the conditions (e.g. temperature) for forming the anode electrode, the organic EL layer, and the cathode electrode. Since it is not necessary to provide the organic EL layer on top of the color filter with its large level differences, variations in the film thickness of the organic EL layer are eliminated, and light emission irregularities can be prevented.

Dependencies are inferred from the claim text.