Organic light emitting devices

An electroluminescent device and device technology, which is applied in the field of organic light-emitting devices and blue-light organic light-emitting devices, and can solve problems such as operational stability that cannot meet requirements

Active Publication Date: 2007-07-04
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although recent advances have developed commercially available green- and red-emitting OLEDs with improved performance, the operational stability of blue-emitting OLEDs is still not satisfactory.

Method used

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  • Organic light emitting devices

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Embodiment Construction

[0011] The present invention provides organic light emitting elements (OLEDs) with improved properties.

[0012] A light emitting device according to an exemplary embodiment of the present invention is composed of an anode, a cathode, and a light emitting region between the anode and the cathode. The light-emitting region can contain a variety of different organic light-emitting materials.

[0013] In order to avoid confusion when understanding the scope of the present invention, the following principles can be adopted:

[0014] The term "layer" means a separate coating, usually of a different composition than the adjacent layer;

[0015] The term "region" refers to a single layer, a plurality of layers, such as 2, 3 or more layers;

[0016] The term "zone" used in the context of a light-emitting zone refers to a single layer, multiple layers, a single functional area in a layer, multiple functional areas in a layer, or one or more areas;

[0017] In general, all regions an...

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Abstract

An organic electroluminescent device includes an anode, a cathode, and a light emitting zone including a material that at least one of reduces triplet / triplet interaction, reduces triplet / singlet interaction, and reduces singlet / singlet interaction.

Description

technical field [0001] The present invention relates to optoelectronic devices, in particular to organic light emitting devices (organic EL devices). More specifically, the present invention relates to substantially stable blue organic light emitting devices. Background technique [0002] An organic electroluminescent (EL) device can be composed of a layer of organic light-emitting material disposed between an anode and a cathode, wherein a typical anode is composed of a transparent conductor such as indium tin oxide, and a typical cathode is composed of a low work function metal such as Magnesium, calcium, aluminum or their alloys with other metals. The basic principle of electroluminescent devices is that under the action of an electric field, positive charges (holes) and negative charges (electrons) are injected from the anode and cathode into the luminescent material respectively, and then recombine to form an excited state to emit light. Many organic electroluminescen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H05B33/14
CPCH01L51/0059H01L51/5012H01L51/0039H01L51/52Y10S428/917H10K85/115H10K85/631H10K50/11C09K11/06C09K11/07H10K50/80
Inventor H·阿兹兹波波维克J·A·科甘胡南星安东尼·J·佩因
Owner LG DISPLAY CO LTD
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