Patent ID: 9419241
Filing Date: 2016-08-16
CPC Classification: H01L,H05B

Claim Text:
1. An organic electroluminescent element comprising: a pair of a first electrode and a second electrode; and two or more luminous units disposed between the first electrode and second electrode on a substrate, adjacent luminous units each being separated by an intermediate electrode layer, wherein (1) at least one of the first electrode and the second electrode is a transparent electrode; (2) the luminous units are each an organic functional layer including an organic luminous layer; (3) the intermediate electrode layer includes an independent connecting terminal for electrical connection; (4) a thin-film layer is disposed on a surface of the transparent electrode being at least one of the first electrode and the second electrode; and (5) the thin-film layer has a variable refractive index across a thickness of the thin-film layer, the variable refractive index having an extreme value (maximum value) at which the refractive index changes from an increase to a decrease or an extreme value (minimum value) at which the refractive index changes from a decrease to an increase.