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Organic electroluminescent element

An electroluminescence element and a luminescence technology, which are applied in the field of organic EL elements, light-emitting devices and display devices, can solve problems such as cumbersome manufacturing processes, and achieve the effects of increased luminous intensity, simple structure, and reduced light loss

Inactive Publication Date: 2015-02-25
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, when the light emitting layer other than the intermediate unit is formed by a wet method, there is a problem that the manufacturing process becomes extremely complicated due to the vacuum process in the middle of the process.

Method used

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  • Organic electroluminescent element
  • Organic electroluminescent element
  • Organic electroluminescent element

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Embodiment Construction

[0050] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, since an element structure etc. are schematically shown for easy understanding, the scale of each member in a drawing may differ from an actual one. In addition, this invention is not limited to the following description, It can change suitably in the range which does not deviate from the summary of this invention. Members such as electrodes and lead wires that are usually present in a light-emitting device equipped with an organic EL element are not directly used in the description of the present invention, and thus descriptions of them are omitted in the drawings. Although for the convenience of explanation of the layer structure etc., in the example shown below, the Figure 1 Although the present invention has been described above, the organic EL element of the present invention and a light-emitting device mounted thereon do not necessarily have to be man...

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Abstract

An object of the present invention is to provide an organic EL element including a plurality of light-emitting layers which each emit light having a different peak wavelength, and having excellent light-emitting performances such as light-emitting intensity with a simple structure. The present invention is a single-photon type organic electroluminescent element including a first electrode having optical transparency, a second electrode, and a plurality of light-emitting layers disposed between the first and second electrodes, wherein the plurality of light-emitting layers stacked between the first and second electrodes each emit light having a different peak wavelength, and each of the light-emitting layers is disposed separately from the second electrode at such a position that optical resonance is generated by reflected light emitted from a predetermined light-emitting layer toward the second electrode and reflected by the second electrode to return, and light emitted from the predetermined light-emitting layer toward the first electrode.

Description

technical field [0001] The present invention relates to an organic electroluminescence element (hereinafter, sometimes referred to as an "organic EL element" in this specification), and more specifically, to a single-photon type organic EL element, a light-emitting device, and a display device incorporating the same. Background technique [0002] An organic EL element includes a pair of electrodes (anode and cathode) and a light-emitting layer interposed therebetween as main components. The use of an organic compound as a material for the light-emitting layer is a major feature of an organic EL device. An organic EL element emits light of a predetermined color and intensity by applying a voltage between electrodes. [0003] In order to improve the intensity, spectral width, and the like of light emitted from an organic EL element, studies have been made using a resonance phenomenon of light. For example, in a so-called single-photon type organic EL element in which a trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/24H01L51/50H05B33/12
CPCH01L51/5036H01L51/5265H10K50/11H10K2101/40H10K50/13H10K2102/351H10K59/878H10K59/876H05B33/24H10K50/125H10K50/852
Inventor 小野善伸
Owner SUMITOMO CHEM CO LTD