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Organic light-emitting diode sealed by thin film and manufacturing method thereof

A light-emitting diode, organic technology, applied in the manufacture of semiconductor/solid-state devices, electrical components, electrical solid-state devices, etc., can solve the problems of complex process, poor characteristics, low vacuum degree, etc., achieve simple process, good sealing and isolation effect, and work long life effect

Inactive Publication Date: 2015-03-25
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned packaging technology has defects such as low vacuum degree and complicated process, and the glass or plastic cover has poor characteristics of blocking water vapor or oxygen. working life requirements

Method used

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  • Organic light-emitting diode sealed by thin film and manufacturing method thereof
  • Organic light-emitting diode sealed by thin film and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides an organic light emitting diode with better encapsulation effect, such as figure 1 Shown is a schematic structural view of the organic light emitting diode, which specifically includes:

[0043] Substrate 101;

[0044] A transparent electrode layer 102, an organic luminescent material layer 103, and a cathode metal layer 104 sequentially formed on the substrate;

[0045] a sealing layer 105 formed on the cathode metal layer;

[0046] The sealing layer 105 is tantalum pentoxide (Ta 2 o 5 )film.

[0047] Wherein, the substrate 101 may include a transparent substrate and an isolation layer, the transparent electrode 102 is formed on the isolation layer, and the transparent substrate is usually glass or a flexible plastic film.

[0048] The transparent electrode layer 102 is the anode of the OLED, also known as the lower electrode. Since the light is emitted through the transparent electrode layer 102, the layer is usually selected from indium...

Embodiment 2

[0059] Corresponding to the organic light emitting diode provided in Embodiment 1, this embodiment provides a method for manufacturing this type of organic light emitting diode, such as figure 2 Shown is a schematic flow chart of the method, which includes the following steps:

[0060] Step S201, providing a substrate; wherein, the substrate may include a transparent substrate and an isolation layer, and the transparent substrate is usually glass or a flexible plastic film.

[0061] Step S202, sequentially forming a transparent electrode layer, an organic light-emitting material layer and a cathode metal layer on the substrate;

[0062] Step S203, forming a tantalum pentoxide thin film on the cathode metal layer.

[0063] In the above step S202, the transparent electrode layer may be formed on the isolation layer of the substrate, specifically, it may be formed by a vacuum coating process. Specifically, the transparent electrode layer may be an indium tin oxide film (Indium...

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Abstract

An organic light emitting diode (OLED) sealed with a thin film and a preparation method thereof. The OLED comprises: a substrate (101); a transparent electrode layer (102), an organic light emitting material layer (103) and a metal cathode layer (104) which are formed on the surface of the substrate (101) in sequence; and a seal layer (105) formed on the metal cathode layer (104). The seal layer (105) is a tantalic oxide film (Ta2O5). The method for preparing the OLED comprises: providing the substrate (101); forming the transparent electrode layer (102), the organic light emitting material layer (103) and the metal cathode layer (104) on the surface of the substrate (101) in sequence; and forming the Ta2O5 layer on the surface of the metal cathode layer (104). By forming the Ta2O5 layer with a planar surface and high geometrical and optical density on the metal cathode layer of OLED, organic materials inside the OLED are sealed and isolated from vapor or oxygen. The OLED with good sealing and isolation effects and long working life is provide with simple procedure.

Description

Technical field: [0001] The invention relates to the technical field of display and lighting, in particular to an organic light-emitting diode (OLED) sealed with a thin film and a manufacturing method thereof. Background technique: [0002] Compared with other lighting and display products, OLED (Organic Light-Emitting Diode) has the advantages of ultra-thin, good shock resistance, wide viewing angle, wide operating temperature, high contrast ratio and flexible display. Potential advantages such as high efficiency and low cost are recognized as ideal display and lighting products. With the continuous improvement of OLED technology, the working life of OLED products has also been greatly improved, making it gradually enter commercial applications in the field of display and lighting, especially in displays, electronic billboards, mobile phones, GPS and other equipment. usage of. OLED technology has become an important research and development direction in the field of displ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH01L51/5253H10K50/844
Inventor 狄国庆
Owner SUZHOU UNIV
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