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Organic electroluminescent device, method for manufacturing the same, surface light source, illuminating device and display device

An electroluminescence element and luminescence technology, which is applied in the manufacture/processing of organic light-emitting devices, electroluminescence light sources, organic light-emitting devices, etc., and can solve the problems of large color changes and the like

Inactive Publication Date: 2010-12-22
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the organic EL element of the prior art, the color change is large with respect to the change of the applied voltage

Method used

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  • Organic electroluminescent device, method for manufacturing the same, surface light source, illuminating device and display device
  • Organic electroluminescent device, method for manufacturing the same, surface light source, illuminating device and display device
  • Organic electroluminescent device, method for manufacturing the same, surface light source, illuminating device and display device

Examples

Experimental program
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Embodiment

[0109]

[0110] As an example, make figure 1 The organic EL element shown. A glass substrate was used as the substrate 2 , and a film was formed on the glass substrate by a sputtering method, and an ITO film patterned in a predetermined shape was used as the anode 3 . As the anode 3, a material having a thickness of 150 nm was used. After cleaning the substrate 2 with the anode 3 with alkaline detergent and ultrapure water and drying it, use UV-O 3 Device (manufactured by TECHNOVISION, trade name "model 312 UV-O 3 Clean System") for UV-O 3 deal with.

[0111] Next, a suspension of poly(3,4)ethylenedioxythiophene (poly(3,4)ethylenedioxythiophene) / polystyrenesulfonic acid (manufactured by H.C. Starck-VTech, trade name "BaytronP TP AI4083") was used Filter through a membrane filter with a pore size of 0.2 μm. The filtered liquid is spin-coated on the anode 3 to form a thin film. Next, heat treatment was performed at 200° C. for 10 minutes on a hot plate to obtain a hole ...

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Abstract

Disclosed is an organic electroluminescent device comprising an anode, a cathode and a light-emitting unit which is arranged between the anode and the cathode and has three or more light-emitting layers containing a polymer compound. The light-emitting layers constituting the light-emitting unit emit light having different peak wavelengths, and the longer the peak wavelength of light emitted from a light-emitting layer is, the closer the light-emitting layer is arranged to the anode.

Description

technical field [0001] The invention relates to an organic electroluminescence element and its manufacturing method, a planar light source, an illuminating device and a display device. Background technique [0002] There is an organic electroluminescent (Electro Luminescence: EL for short) device comprising a pair of electrodes and a light emitting layer containing a polymer compound provided between the electrodes. In this organic EL element, the light-emitting layer can be made to emit light by applying a voltage between the electrodes. For example, there is known an organic EL element that includes a white light-emitting layer in which a plurality of dyes are dispersed and emits white light (for example, refer to Japanese Patent Application Laid-Open No. 07-220871). [0003] When the voltage applied between the electrodes is changed, the color of the emitted light changes. In the conventional organic EL element, the color change is large with respect to the change of th...

Claims

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Application Information

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IPC IPC(8): H05B33/12H01L51/50H05B33/10
CPCH05B33/14H01L51/5036C09K11/06H10K50/125H10K50/805H10K71/00
Inventor 田中慎也
Owner SUMITOMO CHEM CO LTD
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