Organic light emitting diode, organic light emitting display panel including the organic light emitting diode and method of manufacturing the organic light emitting display panel
US-9224970-B2 · Dec 29, 2015 · US
OLED with improved light outcoupling
US9508957B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9508957-B2 |
| Application number | US-53159508-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 31, 2008 |
| Priority date | Mar 30, 2007 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
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Abstract
Official abstract text for this publication.
An OLED may include regions of a material having a refractive index less than that of the substrate, or of the organic region, allowing for emitted light in a waveguide mode to be extracted into air. These regions can be placed adjacent to the emissive regions of an OLED in a direction parallel to the electrodes. The substrate may also be given a nonstandard shape to further improve the conversion of waveguide mode and/or glass mode light to air mode. The outcoupling efficiency of such a device may be up to two to three times the efficiency of a standard OLED. Methods for fabricating such a transparent or top-emitting OLED is also provided.
First claim
Opening claim text (preview).
What is claimed is: 1. An organic light-emitting device comprising: a substrate; a first electrode disposed over the substrate; an organic layer disposed over the first electrode, the organic layer comprising: a first region comprising an organic emissive material; and a second region comprising a transparent low-index material embedded within the organic layer in the form of a grid oriented in a plane parallel to the first electrode, wherein the grid has a periodic pattern…
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Classifications
- H01L51/5275Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H10K50/858Primary
Electricity · mapped topic
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- What does patent US9508957B2 cover?
- An OLED may include regions of a material having a refractive index less than that of the substrate, or of the organic region, allowing for emitted light in a waveguide mode to be extracted into air. These regions can be placed adjacent to the emissive regions of an OLED in a direction parallel to the electrodes. The substrate may also be given a nonstandard shape to further improve the convers…
- Who is the assignee on this patent?
- Forrest Stephen, Sun Yiru, Univ Michigan Regents
- What technology area does this patent fall under?
- Primary CPC classification H01L51/5275. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 29 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).