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Composite package structure and package method of organic electroluminescent device

A technology for electroluminescent devices and packaging structures, which is applied to electric solid devices, electrical components, semiconductor devices, etc., to achieve the effects of improving lifespan, reducing erosion, and facilitating large-area fabrication.

Active Publication Date: 2016-01-27
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the invention is especially suitable for encapsulating flexible organic electroluminescent devices

Method used

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  • Composite package structure and package method of organic electroluminescent device
  • Composite package structure and package method of organic electroluminescent device
  • Composite package structure and package method of organic electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] figure 1 It is a structural schematic diagram of the composite packaging structure of the organic electroluminescence device in this embodiment.

[0046] A composite package structure of an organic electroluminescent device, such as figure 1 As shown, it includes conductive PET film (high temperature resistant polyester film) substrate 1, hole injection layer 2, hole transport layer 3, light emitting layer 4, electron transport layer 5, electron injection layer 6, metal cathode 7 and packaging layer 8. Conductive PET film (high temperature resistant polyester film) substrate 1 and encapsulation layer 8 are sealed by epoxy resin to form a closed space, hole injection layer 2, hole transport layer 3, light emitting layer 4, electron transport layer 5, electron injection layer 6 and the metal cathode 7 are accommodated in the enclosed space. The encapsulation layer 8 sequentially includes a SiO film 81 with a thickness of 100 nm, a SiN film 82 with a thickness of 150 nm...

Embodiment 2

[0048] A composite package structure of an organic electroluminescence device, comprising a conductive glass substrate, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, a metal cathode and a package layer. The conductive glass substrate and the encapsulation layer are sealed with epoxy resin to form a closed space, and the hole injection layer, hole transport layer, light emitting layer, electron transport layer, electron injection layer and metal cathode are accommodated in the closed space. The encapsulation layer sequentially includes a layer of SiO film with a thickness of 150nm, a layer of Si with a thickness of 150nm 3 N 4 film, a layer of oxide film (the oxide film is Ta doped with Ca 2 o 5 film, the total mass of the oxide film is 1.0g, the mass of Ca accounts for 23% of the total mass of the oxide film, and the thickness of the oxide film is 100nm) and a PET film loaded with metal alumi...

Embodiment 3

[0050] A composite package structure of an organic electroluminescence device, comprising a conductive glass substrate, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, a metal cathode and a package layer. The conductive glass substrate and the encapsulation layer are sealed with epoxy resin to form a closed space, and the hole injection layer, hole transport layer, light emitting layer, electron transport layer, electron injection layer and metal cathode are accommodated in the closed space. The encapsulation layer includes a SiO film with a thickness of 150nm, an AlN film with a thickness of 150nm, an oxide film (the oxide film is HfO doped with Ca) in turn. 2 film, the total mass of the oxide film is 0.9g, the mass of Ca accounts for 25% of the total mass of the oxide film, and the thickness of the oxide film is 100nm) and a PET film loaded with metal aluminum. The thickness of the epoxy resin ...

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Abstract

The invention provides a composite packaging structure and a packaging method for organic light-emitting devices. The composite packaging structure comprises an anode substrate, a functional layer, a luminous layer, a metal cathode and a packaging layer, wherein the anode substrate and the packaging layer form a closed space; the functional layer, the luminous layer and the metal cathode are accommodated in the closed space; the packaging layer sequentially comprises a nitride membrane, an oxide membrane and a PET membrane loaded with metallic aluminum; the oxide membrane is formed by mixing one or more of a TiO2 membrane, a ZrO2 membrane, a HfO2 membrane and a Ta2O5 membrane with one or more of metallic elements of Ca, Ba, Sr and Mg; and a SiO membrane serving as a protective layer is arranged between the metal cathode and the nitride membrane. The composite packaging structure can effectively reduce the corrosion of moisture to the organic light-emitting devices, obviously prolong the service life of the organic light-emitting devices, and can protect the metal cathode from damage. The packaging method is particularly used for packaging flexible organic light-emitting devices.

Description

technical field [0001] The invention belongs to the packaging of organic electroluminescent devices, and in particular relates to a compound packaging structure of organic electroluminescent devices and a packaging method thereof. Background technique [0002] An organic electroluminescent device (OLED) is a current-mode semiconductor light-emitting device based on organic materials. Its typical structure is that a multi-layer organic material film (hole injection layer, hole transport layer, light emitting layer, electron transport layer and electron injection layer) is sandwiched between the transparent anode and the metal cathode. When a certain voltage is applied between the electrodes , the luminescent layer will emit light. In recent years, due to its low production cost, short response time, high luminance, wide viewing angle, low driving voltage, energy saving and environmental protection, organic electroluminescent devices have received extensive attention in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L51/50H01L51/56
Inventor 周明杰王平钟铁涛冯小明
Owner OCEANS KING LIGHTING SCI&TECH CO LTD