ORGANIC ELECTROLUMINESCENCE ELEMENT

摘要

The present invention relates to an organic electroluminescence element in which a transparent first electrode, an organic light emitting layer, a second electrode are stacked on a translucent substrate in this order. The translucent substrate includes a moisture-proof layer facing the first electrode. An LR layer and an HR layer having a refractive index higher than a refractive index of the LR layer are situated between the moisture-proof layer and the first electrode in this order from the moisture-proof layer. An uneven structure is provided at an interface between the LR layer and the HR layer. A linear expansivity α of the moisture-proof layer, and a linear expansivity β of the LR layer, and a linear expansivity γ of the HR layer satisfy a relation of α≦β≦γ.

主权项

1. An organic electroluminescence element comprising:
a translucent substrate; a first electrode with light transmissive properties; an organic light emitting layer; and a second electrode, the first electrode, the organic light emitting layer, and the second electrode being stacked on the translucent substrate in this order, the translucent substrate including a moisture-proof layer facing the first electrode, the organic electroluminescence element comprising
an LR layer and an HR layer having a refractive index higher than a refractive index of the LR layer which are situated between the moisture-proof layer and the first electrode in this order from the moisture-proof layer, andan uneven structure provided at an interface between the LR layer and the HR layer, and the organic electroluminescence element satisfying a relation of α≦β≦γ, wherein α denotes a linear expansivity of the moisture-proof layer, and β denotes a linear expansivity of the LR layer, and γ denotes a linear expansivity of the HR layer.