Light extraction substrate of organic light-emitting device and method of fabricating the same
AssigneeCorning Incorporated
InventorHong Yoon
Life of this patent
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Abstract
Various aspects of a light extraction substrate, an organic light emitting device, and methods of fabrication are provided. A light extraction substrate of an organic light-emitting device includes a light-scattering layer disposed on a base substrate and contains a first material, and a number of holes (hole diameters ranging from 350 nm to 450 nm) extending between the first surface and the second surface. A planarization layer (thickness not greater than 200 nm) is disposed on the light-scattering layer and contains a second material.
Claims12
A light extraction substrate of an organic light-emitting device, comprising:
- abase substrate;
- a light-scattering layer disposed on the base substrate, and comprising a first material, the light-scattering layer comprising a first surface facing the base substrate, and a second surface opposite the first surface, a number of holes formed in the light-scattering layer, each of the number of holes extending between the first surface and the second surface;
- and
- a planarization layer disposed on the light-scattering layer, and comprising a second material,
- wherein refractive indices of the first material and the second material range from 1.8 to 2.6,
- wherein each of the number of holes comprises a diameter and the diameters of the number of holes range from 350 nm to 450 nm when measured on a plane perpendicular to a thickness direction of the light-scattering layer,
- a ratio of an area that the number of holes occupy in the first surface to an area of the first surface is at least 40%, and
- a thickness of the planarization layer is 200 nm or less.
An organic light-emitting device comprising:
- abase substrate;
- a light-scattering layer disposed on the base substrate, and comprising a first material, the light-scattering layer comprising a first surface facing the base substrate, and a second surface opposite the first surface, a number of holes formed in the light-scattering layer, each of the number of holes extending between the first surface and the second surface;
- a planarization layer disposed on the light-scattering layer, and comprising a second material;
- an anode electrode layer disposed on the planarization layer;
- an organic layer disposed on the anode electrode layer;
- and
- a cathode electrode layer disposed on the organic layer,
- wherein refractive indices of the first material and the second material range from 1.8 to 2.6,
- wherein each of the number of holes comprises a diameter and the diameters of the number of holes range from 350 nm to 450 nm when measured on a plane perpendicular to a thickness direction of the light-scattering layer;
- a ratio of an area that the number of holes occupy in the first surface to an area of the first surface is at least 40%, and
- a thickness of the planarization layer is 200 nm or less.
Dependencies are inferred from the claim text.