Organic light-emitting display apparatus and method of manufacturing the same
US-2016308162-A1 · Oct 20, 2016 · US
Organic light emitting diode display
US10283734B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10283734-B2 |
| Application number | US-201514877955-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 8, 2015 |
| Priority date | Nov 28, 2014 |
| Publication date | May 7, 2019 |
| Grant date | May 7, 2019 |
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Abstract
Official abstract text for this publication.
An organic light emitting diode display, including a substrate; a thin film transistor on the substrate; a first electrode on the thin film transistor and electrically connected to the thin film transistor; an organic emission layer on the first electrode; a second electrode on the organic emission layer; and a first capping layer on the second electrode and a second capping layer on the first capping layer, the second capping layer being thicker than the first capping layer.
First claim
Opening claim text (preview).
What is claimed is: 1. An organic light emitting diode display, comprising: a substrate; a thin film transistor on the substrate; a first electrode on the thin film transistor and electrically connected to the thin film transistor; an organic emission layer on the first electrode; a second electrode on the organic emission layer; a bi-layer capping layer including a first organic capping layer on the second electrode and a second organic capping layer on the first organic capping layer on the second electrode, the second organic capping layer having a refractive index higher than that of the first organic capping layer; an overcoat on the second organic capping layer and plurality of organic and inorganic encapsulation layers alternately laminated on the overcoat; wherein: the first organic capping layer has a thickness of 400-500 Å, and the second organic capping layer has a thickness of 4,500-6,500 Å. 2. The organic light emitting diode display as claimed in claim 1 , wherein: the first organic capping layer has a refractive index of 1-1.4, and the second organic capping layer has a refractive index of 1.5-2.5. 3. The organic light emitting diode display as claimed in claim 2 , wherein: the first organic capping layer has a refractive index of 1.2-1.3, and the second organic capping layer has a refractive index of 1.8-2.0. 4. The organic light emitting diode display as claimed in claim 1 , wherein the organic emission layer includes: a hole injection layer and a hole transferring layer on the first electrode, an emission layer on the hole transferring layer, and an electron transferring layer and an electron injection layer on the emission layer. 5. The organic light emitting diode display as claimed in claim 4 , wherein: the first electrode is an anode, and the second electrode is a cathode. 6. The organic light emitting diode display as claimed in claim 1 , wherein a reflectance of light in red, green and blue light wavelength regions is higher than a reflectance of light in other wavelength regions except for the red, green, and blue wavelength regions. 7. The organic light emitting diode display as claimed in claim 1 , wherein as the thickness of the first organic capping layer is increased, a wavelength of red, green and blue light wavelength regions having relatively higher reflectivity is longer. 8. The organic light emitting diode display as claimed in claim 1 , wherein as the thickness of the second organic capping layer is increased, a number of antinodes and nodes of a graph representing a reflectance of light for each wavelength band is increased.
Assignees
Inventors
Classifications
Electricity · mapped topic
- H01L51/5281Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
comprising refractive means, e.g. lenses · CPC title
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Frequently asked questions
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- What does patent US10283734B2 cover?
- An organic light emitting diode display, including a substrate; a thin film transistor on the substrate; a first electrode on the thin film transistor and electrically connected to the thin film transistor; an organic emission layer on the first electrode; a second electrode on the organic emission layer; and a first capping layer on the second electrode and a second capping layer on the first …
- Who is the assignee on this patent?
- Samsung Display Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01L51/5281. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 07 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).