Organic light emitting display device with micro-cavity structure
US-9209422-B2 · Dec 8, 2015 · US
Organic electroluminescent element, lighting fixture, and food storage device
US9105857B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9105857-B2 |
| Application number | US-201214006437-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2012 |
| Priority date | Mar 24, 2011 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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The object of the present invention is to provide an organic electroluminescent element suitable for both food lighting at a high temperature and indoor lighting at room temperature. The organic electroluminescent element according to the present invention has such characteristics that: an element temperature at which a general color rendering index Ra has its maximum in an element temperature range of 5° C. to 60° C. is present in a range of 15° C. to 35° C.; and an element temperature at which at least one of a color rendering index R8 a special color rendering index R9, a special color rendering index R14, and a special color rendering index R15 has its maximum in the element temperature range of 5° C. to 60° C. is in a range of temperatures higher than the element temperature at which the general color rendering index Ra has its maximum.
First claim
Opening claim text (preview).
The invention claimed is: 1. An organic electroluminescent element, comprising: a first light emitting layer, including a first green region light emitting layer; a second light emitting layer, including a second green region light emitting layer; and an interlayer interposed between the first light emitting layer and the second light emitting layer, the organic electroluminescent element having such characteristics that: an element temperature, at which a general color re…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H01L51/504Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9105857B2 cover?
- The object of the present invention is to provide an organic electroluminescent element suitable for both food lighting at a high temperature and indoor lighting at room temperature. The organic electroluminescent element according to the present invention has such characteristics that: an element temperature at which a general color rendering index Ra has its maximum in an element temperature …
- Who is the assignee on this patent?
- Kubota Hirofumi, Kittichungchit Varutt, Tsuji Hiroya, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01L51/504. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 11 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).