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Organic electroluminesence device

An electroluminescence, organic light-emitting layer technology, applied in electroluminescence light sources, electric light sources, lighting devices, etc., can solve the problems of less than 20% external electronic efficiency and high refractive index, achieve a simple production process and improve luminous efficiency Effect

Inactive Publication Date: 2004-09-08
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, because the refractive index of organic materials and glass substrates is higher than that of air, part of the light is prone to total reflection and is confined in the component and even scattered on both sides of the component. It is estimated that a total of about 80% of the light will be confined in the component
Therefore, the external electronic efficiency of general organic electroluminescent components is less than 20%.

Method used

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Embodiment 1

[0035] First, a substrate 110 is provided, please refer to FIG. 1 . The substrate 110 can be a transparent substrate or an opaque substrate, and is made of glass or plastic material (bendable substrate). On this substrate 110, a nanostructure organic electroluminescence light extraction layer 120 composed of a dielectric material or an organic material 121 and a nano-scale metal particle 122 is formed, and the above-mentioned nanostructure The dielectric material or organic material 121 of the organic electroluminescence light extraction layer and the metal particles 122 with nanometer size are formed simultaneously in the same or different ways, and the metal particles 122 with nanometer size are doped in the form of dopant Doping in the dielectric material or organic material 121 . The dielectric material of the above-mentioned organic electroluminescent light extraction layer that constitutes the nanostructure is silicon oxide (SiOx), aluminum oxide (AlOx), magnesium oxide...

Embodiment 2

[0037] First, a substrate 210 is provided, please refer to FIG. 2 . The substrate 210 can be a transparent substrate or an opaque substrate, and is made of glass or plastic material (flexible substrate). A first electrode 230 is formed on the substrate 210, and the first electrode 230 can be a transparent electrode, a metal electrode or a composite electrode. Next, a nanostructured organic electroluminescent light extraction layer 220 composed of a dielectric material or an organic material 221 and a nano-scale metal particle 222 is formed on the first electrode 230, and the above-mentioned The dielectric material or organic material 221 and the metal particles 222 with nanometer size that constitute the nanostructured organic electroluminescent light extraction layer 220 are formed simultaneously in the same or different ways, and the above-mentioned metal particles 222 with nanometer size are formed as dopants ( dopant) in the form of doping (doping) in the dielectric mater...

Embodiment 3

[0039] First, a substrate 310 is provided, please refer to FIG. 3 . The substrate 310 can be a transparent substrate or an opaque substrate, and is made of glass or plastic material (flexible substrate). A first electrode 330 is formed on the substrate 310, and the first electrode 330 can be a transparent electrode, a metal electrode or a composite electrode. Next, an organic light-emitting layer 340 is formed on the first electrode 330, and the organic light-emitting layer 340 can be a small molecule or polymer organic light-emitting material. Next, a nanostructured organic electroluminescence light extraction layer 320 composed of a dielectric material or an organic material 321 and metal particles 322 with a nano-scale (nano-scale) is formed on the organic light-emitting layer 340, and the above-mentioned composition The dielectric material 321 of the nanostructured organic electroluminescent light extraction layer and the metal particles 322 with nanometer size are formed...

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Abstract

The present invention reveals organic electroluminescence device in the structure capable of preventing degradation of outer quantum efficiency of the organic electroluminescence assembly caused by surface plasma sub-resonance. The organic electroluminescent device has organic electroluminescence light leading out layer in nano structure of dielectric material or organic material and metal grains in nano size. The nano structure film layer may resonate with surface plasma in the assembly to form coupling, so that the light falling into the assembly may be taken out from the assembly to raise the light-emitting efficiency of the organic electroluminescence device effectively.

Description

technical field [0001] The present invention relates to an organic electroluminescent device and its manufacturing method, in particular to an organic electroluminescent device with a structure that solves the problem of reducing the external quantum efficiency of the organic electroluminescent device due to surface plasmon resonance in the organic electroluminescent device. Light device. Background technique [0002] Organic electroluminescent displays (organic electroluminescent devices) (also known as organic light emitting diode (OLED) displays) emit light based on organic molecular materials (which can be divided into small molecule materials according to molecular weight) And polymer material (polymer material)) apply an external electric field to make it produce luminescence. Organic electroluminescent devices (organic electroluminescent devices) are self-illuminating (self emission) components, and can be arrayed (dot matrix type display), with light and thin, high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/12H05B33/14
Inventor 曾美榕刘仲明王俊凯林显光
Owner IND TECH RES INST
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