ORGANIC EL LIGHT EMITTING ELEMENT

摘要

An organic EL device in the present invention comprises a light-transmissive substrate 1 , an organic light emitting layer 2, a light-transmissive electrode 3 disposed between the light-transmissive substrate 1 and the organic light emitting layer 2, and a light guiding layer 4 which is disposed between the substrate 1 and the light-transmissive electrode 3. The light guiding layer 4 is configured to alter light direction. The organic EL device is configured to emit light from the organic light emitting layer 2, and allow the light to propagate out through said light guiding layer 4, the light-transmissive electrode 3, and the light-transmissive substrate 1 . The light guiding layer 4 includes a light dispersion layer 5. The light dispersion layer 5 is formed with a light dispersion region 8 and a light-transmissive region 9, which are arranged in a coplanar relation within said light dispersion layer 5. The light dispersion region 8 contains light dispersion particles 6 and a binder resin 7. The light-transmissive region 9 contains the light dispersion particles 6 at a lower ratio than the light dispersion region 8 . The organic EL device in the present invention enables to improve an overall light output by suppressing the reduction of light output in the front direction as well as increasing light output in diagonal directions.