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Organic electroluminescent element, display device, and illumination device

一种电致发光元件、致发光的技术，应用在照明装置、发光元件的半导体器件、电气元件等方向，能够解决硼的化合物不稳定等问题

Active Publication Date: 2018-04-17
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compounds with boron are generally unstable

Method used

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  • Organic electroluminescent element, display device, and illumination device
  • Organic electroluminescent element, display device, and illumination device
  • Organic electroluminescent element, display device, and illumination device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0514] One Embodiment of the illuminating device of this invention provided with the organic EL element of this invention is demonstrated.

[0515] The non-light-emitting surface of the organic EL element of the present invention was covered with a glass case, a glass substrate with a thickness of 300 μm was used as a substrate for sealing, and an epoxy-based photocurable adhesive (LUXTRACK LC0629B, manufactured by Toa Gosei Co., Ltd.) was applied as a sealing material around it. , it is superimposed on the cathode and closely adhered to the transparent support substrate, and UV light is irradiated from the glass substrate side to cure and seal it, so as to form Figure 7 and Figure 8 lighting fixture shown.

[0516] Figure 7 A schematic diagram showing a lighting device, the organic EL element (organic EL element 101 in the lighting device) of the present invention is covered with a glass cover plate 102 (it should be noted that the sealing operation in the glass cover pl...

Embodiment 1

[0531] 1. Fabrication of organic EL elements

[0532]An organic EL element was produced using the following compounds as electron transport layer materials.

[0533] [Chemical formula 30]

[0534]

[0535] [Chemical formula 31]

[0536]

[0537] [Chemical formula 32]

[0538]

[0539] (Production of Organic EL Element 1-1)

[0540] Patterning was performed on a substrate (manufactured by Avan Strate Co., Ltd., NA-45) in which ITO (indium tin oxide) as an anode was formed into a film of 100 nm on a glass substrate of 100 mm×100 mm×1.1 mm. Then, the transparent support substrate on which the ITO transparent electrode was provided was ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen, and UV ozone cleaning was performed for 5 minutes.

[0541] On this transparent support substrate, poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT / PSS (hole transport material 1), manufactured by Bayer Co., Ltd., Baytron P Al4083) was used. The solutio...

Embodiment 2

[0565] An organic EL element was produced using the following compounds as host materials.

[0566] [Chemical formula 34]

[0567]

[0568] [Chemical formula 35]

[0569]

[0570] [Chemical formula 36]

[0571]

[0572] (Production of Organic EL Element 2-1)

[0573] On a glass substrate of 50 mm×50 mm×thickness 0.7 mm, ITO (indium tin oxide) was formed into a film with a thickness of 150 nm, and then patterned to form an ITO transparent electrode as an anode. The transparent substrate provided with the ITO transparent electrode was ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen, and then cleaned with UV ozone for 5 minutes. The obtained transparent substrate was fixed to the substrate holder of a commercially available vacuum vapor deposition apparatus.

[0574] Each of the resistive heating boats for vapor deposition in the vacuum vapor deposition apparatus is filled with each layer constituting material in an amount most suitable for pro...

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Abstract

The purpose of the present invention is to provide an organic electroluminescent element having improved luminous efficiency and stability under high-temperature storage. The present invention is an organic electroluminescent element that has an anode, a cathode, and at least one light-emitting layer sandwiched between the anode and the cathode, and is characterized in that at least one of the light-emitting layers contains a pi-conjugated boron compound having a structure represented by general formula (1). (In general formula (1), X1 to X9 each independently represents -CR or a nitrogen atom, R represents a hydrogen atom or a substituent, and Y1 to Y3 each independently represents an oxygen atom or a sulfur atom).

Description

technical field [0001] The present invention relates to an organic electroluminescence element, and a display device and a lighting device including the organic electroluminescence element. Background technique [0002] An organic EL element (also referred to as an "organic electroluminescence element") utilizing electroluminescence (Electro Luminescence: hereinafter abbreviated as "EL") of an organic material has been put into practical use as a new light-emitting system capable of planar light emission technology. In the case of organic EL elements, electronic displays have recently been applied to lighting equipment, and their development is expected. [0003] When an electric field is applied to the organic EL element, holes and electrons are injected from the anode and the cathode, respectively, and rebond in the light-emitting layer to generate excitons. Since it is known that singlet excitons and triplet excitons are generated at a ratio of 25%:75%, phosphorescence ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50
CPCC09K11/06H10K85/636H10K85/654H10K85/657H10K85/6572H10K85/6574H10K50/11H10K50/155H10K2101/10H10K50/165H10K85/658F21Y2115/15H10K50/12H10K85/322H10K85/342H10K85/624H10K2101/30C09K2211/185
Inventor 饭岛贵之北弘志
Owner KONICA MINOLTA INC
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