Organic light emitting diode display and manufacturing method thereof
First Claim
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1. An organic light emitting diode (OLED) display comprising:
- a substrate;
an organic light emitting element on the substrate and comprising a first electrode, an emission layer, and a second electrode; and
an encapsulation layer on the substrate while covering the organic light emitting element,wherein the encapsulation layer comprises alternately stacked organic layers and inorganic layers,wherein a protrusion and depression structure, with an irregular pattern, is formed in interfaces between the organic layers and the inorganic layers,wherein the protrusion and depression structure has a root mean square (RMS) roughness in a range between 30 Å
to 1000 Å
,wherein each of the organic layers has a refractive index between 1.2 and 2.0,wherein each of the inorganic layers has a refractive index between 1.3 and 2.2,wherein the protrusion and depression structure is formed in a surface of the organic layer,wherein the inorganic layer is formed on the organic layer, andwherein the protrusion and depression structure consists of the same material as the organic layer.
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Abstract
An OLED display includes: a substrate; an organic light emitting element formed on the substrate and including a first electrode, an emission layer, and a second electrode; and an encapsulation layer formed on the substrate while covering the organic light emitting element. The encapsulation layer includes an organic layer and an inorganic layer, and a protrusion and depression structure is formed in an interface between the organic layer and the inorganic layer.
51 Citations
7 Claims
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1. An organic light emitting diode (OLED) display comprising:
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a substrate; an organic light emitting element on the substrate and comprising a first electrode, an emission layer, and a second electrode; and an encapsulation layer on the substrate while covering the organic light emitting element, wherein the encapsulation layer comprises alternately stacked organic layers and inorganic layers, wherein a protrusion and depression structure, with an irregular pattern, is formed in interfaces between the organic layers and the inorganic layers, wherein the protrusion and depression structure has a root mean square (RMS) roughness in a range between 30 Å
to 1000 Å
,wherein each of the organic layers has a refractive index between 1.2 and 2.0, wherein each of the inorganic layers has a refractive index between 1.3 and 2.2, wherein the protrusion and depression structure is formed in a surface of the organic layer, wherein the inorganic layer is formed on the organic layer, and wherein the protrusion and depression structure consists of the same material as the organic layer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification