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Organic light emitting diode

A technology of light-emitting diodes and diodes, which is applied in the manufacturing of electrical components, electric solid-state devices, semiconductor/solid-state devices, etc., can solve the problems of increasing process steps and production costs, narrow band gap, etc. Production cost, the effect of simplifying the process flow

Inactive Publication Date: 2008-02-06
NINGBO JIAXING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

More importantly, since Alq3 itself is a green luminescent material with a narrow band gap, it is only suitable for the main material of red and green light devices, but not suitable for the main material of blue light devices. For blue light devices, it needs another The blue light host material with a wide bandgap, which will increase the process and production cost for industrial production

Method used

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  • Organic light emitting diode
  • Organic light emitting diode
  • Organic light emitting diode

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Embodiment 1

[0030] Please refer to the accompanying drawing 1, firstly, ITO is etched on the substrate 1 with ITO to form the anode 2, then the ITO is pretreated with oxygen plasma, and then copper phthalocyanine (CuPc), N, N is continuously evaporated on the ITO. -Diphenyl-N,N-di(2-naphthyl)-1,1-biphenyl-4,4-diamine (NPB), 9,10-(2-β-naphthyl)anthracene (ADN) : 3-(2-Benzothiazole)-7-diethylaminocoumarin (C6): 4-bicyclomethylene-2-tert-butyl-6-(1,1,7,7- Tetramethyljulonidine-4-vinyl)-4hydro-pyran (DCJTB), 8-hydroxyquinoline aluminum (Alq3), and lithium fluoride (LiF) were used as hole injection layer 3 and hole transport layer respectively. Layer 4, luminescent layer 5, electron transport layer 6, electron injection layer 7, and then vapor-deposit a layer of metal aluminum as the cathode 8, and finally package the device in anhydrous and oxygen-free manner to complete the device fabrication. Wherein the luminescent layer is co-evaporated from three sources, 3-(2-benzothiazole)-7-diethylam...

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Abstract

The present invention relates to a LED comprising a positive layer, a negative layer and a lighting layer which is positioned between the positive layer and the negative layer; the lighting layer comprises a blue light main material which has a two point five to three point five volt forbidden belt width, an energy transmit medium and a little impurity red lighting body; and the present invention makes the blue light main material transmits the laser energy to the lighting body to make the red body light. The present invention has the advantages of high efficiency and stability; and the method of the present invention simplifies the producing process of the lighting colorful displaying device.

Description

technical field [0001] The invention relates to an organic light emitting diode device. Background technique [0002] The main research goal of organic thin film electroluminescent devices is to produce high-resolution, large-area full-color organic light-emitting displays. There are many ways to realize color, such as red, green and blue three primary colors, white light plus filter method, blue light conversion method, etc. In terms of making full use of the luminous efficiency of the three primary colors of red, green, and blue, the three-primary color method is the best display solution. If this method of realizing full color is adopted, three light-emitting devices of red, green and blue need to be fabricated separately. From the perspective of existing technologies, green and blue light devices have made great progress, while the development of red light devices is relatively lagging behind, mainly because the luminous efficiency and device life cannot meet the requi...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54
Inventor 袁正勇汤昊
Owner NINGBO JIAXING TECH
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