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Organic electroluminescent device, method for manufacturing the organic electroluminescent device, and electronic apparatus

An electroluminescence device and a manufacturing method technology, which can be applied to electroluminescence light sources, electric light sources, luminescent materials, etc., and can solve problems such as doubts that electron transport may not be good

Active Publication Date: 2008-02-13
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such an organic EL device having a laminated structure of high-molecular-weight organic material / low-molecular-weight organic material, electron transport in these interfaces may not necessarily become good.

Method used

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  • Organic electroluminescent device, method for manufacturing the organic electroluminescent device, and electronic apparatus
  • Organic electroluminescent device, method for manufacturing the organic electroluminescent device, and electronic apparatus
  • Organic electroluminescent device, method for manufacturing the organic electroluminescent device, and electronic apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0059] [Structure of Organic EL Device]

[0060] FIG. 1 is a schematic configuration diagram of a first embodiment of the organic EL device of the present invention. This organic EL device EL1 includes an anode 3 as a first electrode, a hole injection layer 4, a light emitting layer 5 as a first organic layer, an electron transport layer 6 as a second organic layer, and an anode as a second electrode on a substrate 2. Cathode 8. The hole injection layer 4 , the light emitting layer 5 , and the electron transport layer 6 are formed of organic materials, and the organic functional layer 7 is formed from these organic layers. In addition, the organic functional layer 7 is sandwiched between the first electrode 3 and the second electrode 8 , and the organic EL element 9 is formed by the first electrode 3 , the organic functional layer 7 , and the second electrode 8 .

[0061] Wiring for applying a driving voltage is connected to the first electrode 3 and the second electrode 8 ....

no. 2 approach

[0085] [Structure of Organic EL Device]

[0086] 4 is a schematic configuration diagram of a second embodiment of the organic EL device of the present invention. This organic EL device EL2 includes an anode 3 as a first electrode, a hole injection layer 4, a light emitting layer 5 as a first organic layer, an electron transport layer 6 as a second organic layer, and an anode as a second electrode on a substrate 2. Cathode 8. The hole injection layer 4 , the light emitting layer 50 , and the electron transport layer 6 are formed of organic materials, and the organic functional layer 71 is formed from these organic layers. In addition, the organic functional layer 71 is sandwiched between the first electrode 3 and the second electrode 8 , and the organic EL element 91 is formed by the first electrode 3 , the organic functional layer 71 and the second electrode 8 . The structure other than the light-emitting layer is the same as that of the organic EL device EL1 of the first em...

no. 3 approach

[0101] [Structure of Organic EL Device]

[0102]6 is a schematic configuration diagram of a third embodiment of the organic EL device of the present invention. This organic EL device EL3 is provided with an anode 3 as a first electrode, a hole injection layer 4, a light emitting layer 53 as a first organic layer, an electron transport layer 61 as a second organic layer, and an anode as a second electrode on a substrate 2. Cathode 8. The hole injection layer 4 , the light emitting layer 53 , and the electron transport layer 61 are formed of organic materials, and the organic functional layer 72 is formed from these organic layers. In addition, the organic functional layer 72 is sandwiched between the first electrode 3 and the second electrode 8 , and the organic EL element 92 is formed by the first electrode 3 , the organic functional layer 72 , and the second electrode 8 . The structure other than the light emitting layer 53 and the electron transport layer 61 is the same as...

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Abstract

The present invention provides an organic electroluminescent device that improves electron transport efficiency at the interface between a light emitting layer and an electron transport layer. The organic electroluminescent device (EL1) of the present invention is an organic electroluminescent device having a light emitting layer (5) and an electron transport layer (6) formed by a wet method between a pair of electrodes, and is characterized in that the The light-emitting layer (5) contains a cross-linkable light-emitting material, and in the light-emitting layer (5), at least at the interface between the electron transport layer (6) and the light-emitting layer (5), a layer is provided so that all A crosslinked layer formed by crosslinking the luminescent material.

Description

technical field [0001] The invention relates to an organic electroluminescent device, a method for manufacturing the organic electroluminescent device and electronic equipment. Background technique [0002] Organic electroluminescent devices (organic EL devices) are expected as next-generation display devices. The organic EL device is composed of an organic EL element with a light-emitting layer sandwiched between the upper and lower electrodes on the substrate. The typical structure adopts sequentially stacking an anode and an organic functional layer (hole injection layer or light-emitting layer, etc.) on a light-transmitting substrate such as glass. ) and the structure of the cathode. Then, the light emitting layer of the organic functional layer is made to emit light by supplying an electric current to the organic functional layer through the anode and the cathode. [0003] Organic EL devices are required to increase luminous efficiency. Therefore, Patent Document 1 p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/14H05B33/22H05B33/10
CPCH05B33/10H05B33/22H05B33/14C09K11/06H01L51/5012C09K2211/1416Y10T428/31938H10K50/11H05B33/20
Inventor 后藤正嗣内田昌宏
Owner SEIKO EPSON CORP