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Organic electroluminescent device and luminant apparatus

An electroluminescence device and luminescence technology, which is applied in the direction of electroluminescence light source, electric solid-state device, electric light source, etc., can solve the problems of poor reliability of the device

Inactive Publication Date: 2003-10-29
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the device with the above structure has poor reliability

Method used

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  • Organic electroluminescent device and luminant apparatus
  • Organic electroluminescent device and luminant apparatus
  • Organic electroluminescent device and luminant apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] Example 1 (Concentration and Luminous Efficiency of Compound 1)

[0055] In this example, a number of organic electroluminescent devices were prepared as samples, and each sample used a styryl compound represented by the following compound 1 and the following Alq 3 (tris(8-hydroxyquinoline)aluminum)) A mixed layer made of an electron-transporting material represented by electron-transporting properties is used as a light-emitting layer with electron-transporting properties, and the relationship between the luminance of light emitted by each sample and the luminous efficiency of the sample is examined and analyzed. relation.

[0056] Organic electroluminescent device samples were prepared as follows: namely, the styrene-based compound 1 represented by the following chemical formula and the electron transport material Alq represented by the following chemical formula were formed using a vacuum vapor deposition process 3 As the light-emitting layer of each organic electro...

example 2

[0074] Example 2 (Concentration and Luminous Efficiency of Compound 1)

[0075] In this example, several organic electroluminescent devices were prepared as samples, each using the same styryl compound 1 as described in Example 1 and the same hole transporting material as described in Example 1 A mixed layer made of α-NPD was used as a light-emitting layer having hole transport properties, and the relationship between the luminance of light emitted from each sample and the light-emitting efficiency of the sample was examined and analyzed.

[0076] Several organic electroluminescence device samples were prepared according to the same method as described in Example 1, except that the same styrene-based compound 1 and the same as described in Example 1 were prepared by using a vacuum vapor deposition process. A mixed layer made of the hole transport material α-NPD was constructed as the light-emitting layer.

[0077] [Device structure]:

[0078] Device (2-1):

[0079] ITO / α-NP...

example 3

[0091] Example 3 (Concentration and Luminous Efficiency of Compound 2)

[0092] In this example, a number of organic electroluminescence devices were prepared as samples, each using a styryl compound represented by Compound 2 below and the same electron transport material Alq as described in Example 1. 3 (tris(8-quinolinolato)aluminum)) was used as a light-emitting layer having electron transport properties, and the relationship between the luminance of light emitted from each sample and the light-emitting efficiency of the sample was examined and analyzed.

[0093] A number of organic electroluminescent device samples were prepared in the same manner as described in Example 1, except that the compound 2 styryl compound represented by the following chemical formula and the same electron transport as described in Example 1 were prepared using a vacuum vapor deposition process MaterialAlq 3 The resulting mixed layer was prepared as a light-emitting layer.

[0094] [Compound 2]...

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Abstract

The present invention provides a color (color) that can prevent light (color) and the light emitting efficiency changes with the concentration of luminous materials in the light layer and working conditions such as voltage supplement, thereby showing high brightness, high performance and stabilityHigh -reliability mechanical and electrical light -oriented luminous devices.This luminous device includes anode (6), the cave conveyor (2), the light emitting layer (3), the electronic conveyor layer (4), or the anode (6), the cave conveyor (2), used as an electronic conveyor layer to the electronic conveyor layerLighting layer (4).The glowing zone is formed by the mixture of an accelerated material with a luminous material and charge.In the case of a single film layer between the cathode and the anode, the luminous material shows the electrostatic light emission when the voltage is applied to it and has the charge conveyor characteristics.The charging acceleration material is different from the luminous material, and has the charge delivery characteristics that can accelerate the charge injection in the lighting material.The glowing area not only exists on the interface or near the interface of the phase, but also exists in a specific thickness zone on the thick side of the layer.

Description

technical field [0001] The present invention relates to an organic electroluminescent device (organic EL device) comprising an organic layer having a light-emitting region between a cathode and an anode, and to a light-emitting device using the device, such as a display. Background technique [0002] Displays play an important role in our daily lives, for example, in the form of television receivers, computer monitors and portable information terminals. With the development of the Internet, displays have become increasingly important as a human-machine interface. These displays are required to be comfortable for the human eye and ensure a sufficiently high-definition screen, and are required to have a sufficiently high resolution and responsiveness to clearly and thoroughly display moving pictures without delay. [0003] Organic EL devices using organic compounds as light-emitting materials exhibit wide viewing angles, high contrast and excellent visual effects. Another ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50
CPCH10K50/11H05B33/14
Inventor 石桥义田村真一郎植田尚之市村真理山田二郎
Owner SONY CORP