Display device and method for fabricating the same
US-2024363819-A1 · Oct 31, 2024 · US
Light emitting element, light emitting device, manufacturing method of light emitting device, and sheet-like sealing material
US8968044B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8968044-B2 |
| Application number | US-201313947293-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 22, 2013 |
| Priority date | Mar 3, 2006 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A method to improve light extraction efficiency of a light emitting element such as an electroluminescent element is disclosed. Over a substrate, a first electrode, a light emitting layer, and a second electrode are sequentially stacked. The first electrode is a reflective electrode. The second electrode is an electrode which transmits visible light, and light emitted from the light emitting layer is extracted from the second electrode. In contact with a surface of the second electrode, many fine particles are provided. The fine particles have a refractive index which is equal to or higher than that of the second electrode. Light which passes through the second electrode is scattered and refracted by the fine particles. Accordingly, the amount of light which is totally reflected at an interface between the second electrode and a gas is reduced, and light extraction efficiency is improved.
First claim
Opening claim text (preview).
What is claimed is: 1. A manufacturing method of a light emitting device comprising the steps of: sequentially forming, over a first substrate, a first electrode, a light emitting layer, and a second electrode which transmits light emitted from the light emitting layer; preparing an uncured sheet-like sealing material, wherein a plurality of fine particles is provided on one surface of the uncured sheet-like sealing material, and wherein a film base is provided on the other su…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8968044B2 cover?
- A method to improve light extraction efficiency of a light emitting element such as an electroluminescent element is disclosed. Over a substrate, a first electrode, a light emitting layer, and a second electrode are sequentially stacked. The first electrode is a reflective electrode. The second electrode is an electrode which transmits visible light, and light emitted from the light emitting la…
- Who is the assignee on this patent?
- Semiconductor Energy Lab
- What technology area does this patent fall under?
- Primary CPC classification H10K71/00. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 03 2015 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).