Organic EL element with inorganic insulation layer and method for production thereof
First Claim
1. An organic electroluminescence (EL) element, comprising:
- a substrate;
a planarized layer on the substrate;
an insulation layer of inorganic material, wherein the insulation layer is on the planarized layer such that a region corresponding to a subpixel of the planarized layer is at least partly exposed;
a pixel electrode on a peripheral part of the insulation layer and on the exposed region of the planarized layer;
a bank on the insulation layer, whereinthe insulation layer is between a bottom of the bank and the planarized layer, andan upper surface of the planarized layer is coated with at least one of the pixel electrode or the insulation layer;
a transparent conductive layer comprising a metal oxide, wherein the transparent conductive layer is on the pixel electrode, whereinthe pixel electrode is between the peripheral part of the insulation layer and the transparent conductive layer in a lamination direction, anda bottom surface of the pixel electrode is in contact with the peripheral part of the insulation layer;
a hole injection layer above the transparent conductive layer, wherein the transparent conductive layer is between the hole injection layer and the pixel electrode;
an emission layer in an opening in the bank, whereinthe emission layer is at least partially in contact with the hole injection layer, andthe hole injection layer is between the emission layer and the transparent conductive layer, andthe opening corresponds to the subpixel; and
a counter electrode above the emission layer.
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Abstract
An organic EL element includes a planarized layer arranged on a substrate, an insulation layer which is arranged on the planarized layer with the region corresponding to a subpixel of the planarized layer left exposed at least partly, a pixel electrode which has an opening that defines the region corresponding to the subpixel and which is arranged on a bank arranged on the insulation layer and on the exposed part of the planarized layer, a transparent conductive layer arranged on the pixel electrode, an emission layer arranged in the opening and above at least the transparent conductive layer, and a counter electrode arranged above the emission layer. The insulation layer is interposed between a bottom of the bank and the planarized layer. An upper surface of the planarized layer is coated with at least one of the pixel electrode and the insulation layer.
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Citations
12 Claims
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1. An organic electroluminescence (EL) element, comprising:
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a substrate; a planarized layer on the substrate; an insulation layer of inorganic material, wherein the insulation layer is on the planarized layer such that a region corresponding to a subpixel of the planarized layer is at least partly exposed; a pixel electrode on a peripheral part of the insulation layer and on the exposed region of the planarized layer; a bank on the insulation layer, wherein the insulation layer is between a bottom of the bank and the planarized layer, and an upper surface of the planarized layer is coated with at least one of the pixel electrode or the insulation layer; a transparent conductive layer comprising a metal oxide, wherein the transparent conductive layer is on the pixel electrode, wherein the pixel electrode is between the peripheral part of the insulation layer and the transparent conductive layer in a lamination direction, and a bottom surface of the pixel electrode is in contact with the peripheral part of the insulation layer; a hole injection layer above the transparent conductive layer, wherein the transparent conductive layer is between the hole injection layer and the pixel electrode; an emission layer in an opening in the bank, wherein the emission layer is at least partially in contact with the hole injection layer, and the hole injection layer is between the emission layer and the transparent conductive layer, and the opening corresponds to the subpixel; and a counter electrode above the emission layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification