Patent ID: 9722209
Date: 2017-08-01
CPC Classifications: H01L,H05B

Claim:
1. An organic light emitting device comprising: a substrate having light transmissivity; a first electrode that is disposed on the substrate; one or more organic material layers that include a light emitting layer disposed on the first electrode; a second electrode that is disposed on the organic material layer; and a high refractive index layer that is provided on at least one side of a lower portion of the first electrode and an upper portion of the second electrode, wherein the high refractive index layer includes a light reuse pattern therein, wherein the light reuse pattern is uniformly distributed in a horizontal direction of the high refractive index layer, such that the high refractive index layer is divided by the light reuse pattern, wherein the light reuse pattern comprises first and second disconnected segments, wherein a first material of the first disconnected segment is the same as, or different from, a second material of the second disconnected segment, and wherein the first and second materials are different from a material of the high refractive index layer, and wherein the first and second disconnected segments of the light reuse pattern are separated by a portion of the high refractive index layer present between the first and second disconnected segments, such that the first and second disconnected segments are not in contact with each other, wherein an interface between the light reuse pattern and the high refractive index layer is vertical or inclined with respect to a surface of the substrate, wherein the light reuse pattern has at least one function selected from scattering, absorption, and re-emission, light refraction and reflection, and wherein ratio a:c is 0.01 or more, “a” being a thickness of the high refractive index layer including the light reuse pattern in a direction perpendicular to the substrate, and “c” being an average width, measured parallel to the substrate, of the portion of the high refractive index layer that is present between the first and second materials of the light reuse pattern.