Patent ID: 8773015

Claim:
A method for producing an organic electroluminescent device comprising a pair of electrodes and two or more organic layers disposed between the electrodes, the two or more organic layers including a light-emitting layer, the method comprising the steps of: forming one electrode of a pair of electrodes; forming two or more organic layers having a periodic structure by which a traveling direction of light which travels in a direction almost perpendicular to a thickness direction of the light-emitting layer is inclined in the thickness direction; and forming the other electrode of the pair of electrodes, wherein the step of forming two or more organic layers comprises stacking two or more planar layers serving as the organic layers, and then further forming, by an imprinting method in the two or more planar layers stacked, the periodic structure which is two-dimensionally placed with periodicity in a plane perpendicular to the thickness direction of the light-emitting layer, wherein: in the imprinting method, a mold having a plurality of predetermined protrusions is pressed on the two or more organic layers; the protrusions are disposed on the mold at points of intersection between a plurality of first parallel stripes spaced from each other at regular intervals and second parallel stripes spaced from each other at regular intervals; an angle of intersection is formed between the first parallel stripes and the second parallel stripes; and an interval L 1 between the first parallel stripes and an interval L 2 between the second parallel stripes are either the same or different.