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Organic light-emitting diode device and packaging method thereof

An electroluminescent device, organic technology, applied in the direction of organic semiconductor devices, organic semiconductor device materials, electric solid devices, etc., can solve the problems of short service life, reduced luminous quantum efficiency, and easy to be corroded, and achieve high service life Effect

Inactive Publication Date: 2014-10-01
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the light-emitting layer in the OLED is very sensitive to pollutants, oxygen, water vapor, etc. in the atmosphere. Chemical reactions under the action of pollutants, oxygen, and water vapor will lead to a decrease in the quantum efficiency of light emission, and the cathode is generally composed of a more active Metal formation, vulnerable to corrosion in air or oxygen, resulting in poor stability and short service life of OLEDs

Method used

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  • Organic light-emitting diode device and packaging method thereof
  • Organic light-emitting diode device and packaging method thereof
  • Organic light-emitting diode device and packaging method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] The structure is ITO / MoO 3 :NPB / TCTA / Ir(ppy) 3 :TPBI / Bphen / CsN 3 :Bphen / Al / TPD:Bphen: LiF / Sb 2 Te 3 :Si 3 N 4 :Ag / TPD:Bphen / Si 3 N 4 :MgAl 2 o 4 : Encapsulation of Ag organic electroluminescent devices.

[0135] (1) Provide the anode conductive substrate, the anode conductive substrate is indium tin oxide glass, denoted as ITO. First, put the anode conductive substrate into acetone, ethanol, deionized water and ethanol in sequence for ultrasonic cleaning, ultrasonic cleaning for 5 minutes each time, then blow dry with nitrogen, and then dry in an oven to obtain a clean and dry anode conductive substrate. Further use UV-ozone (UV-ozone) to treat the cleaned and dried anode conductive substrate for surface activity treatment for 30 minutes to increase the oxygen content on the surface of the anode conductive substrate and improve the work function of the anode conductive substrate;

[0136] (2) The hole injection layer formed by vacuum evaporation on the surfac...

Embodiment 2

[0148] The structure is ITO / MoO 3 :NPB / TCTA / Ir(ppy) 3 :TPBI / Bphen / CsN 3 :Bphen / Al / NPB:BCP:CeF 2 / Bi 2 Te:AlN:Al / NPB:BCP / AlN:Bi 2 Ti 4 o 11 : Packaging of Al organic electroluminescent devices.

[0149] (1) to (7) are the same as in Example 1.

[0150] (8) Prepare the first organic barrier layer by vacuum evaporation. The first organic barrier layer is set on the anode conductive substrate and covered on the light-emitting functional layer and the cathode. The vacuum degree of vacuum evaporation is 5×10 -5 Pa, the evaporation rate is Materials for the first organic barrier layer include (N,N′-di(α-naphthyl)-N,N′-diphenyl-4,4′-diamine (NPB), 2,9-dimethyl- 4,7-diphenyl-1,10-phenanthroline (BCP) and cerium fluoride (CeF 2 ), where the molar ratio of NPB to BCP is 50:100, CeF 2 The molar ratio with BCP is 20:100, and the thickness of the first organic barrier layer is 250 nanometers;

[0151] (9) Prepare the first inorganic barrier layer by magnetron sputtering. The fi...

Embodiment 3

[0156] The structure is ITO / MoO 3 :NPB / TCTA / Ir(ppy) 3 :TPBI / Bphen / CsN 3 :Bphen / Al / TAPC:TPBI:MgF 2 / CdTe:BN:Ni / TAPC:TPBI / BN:CrNiO 4 : Encapsulation of Ni organic electroluminescent devices.

[0157] (1) to (7) are the same as in Example 1.

[0158] (8) Prepare the first organic barrier layer by vacuum evaporation. The first organic barrier layer is set on the anode conductive substrate and covered on the light-emitting functional layer and the cathode. The vacuum degree of vacuum evaporation is 5×10 -5 Pa, the evaporation rate is Materials for the first organic barrier layer include 1,1-bis((4-N,N′-bis(p-tolyl)amine)phenyl)cyclohexane (TAPC), 1,3,5-tris(1- Phenyl-1H-benzimidazol-2-yl)benzene (TPBI) and magnesium fluoride (MgF 2 ), where the molar ratio of TAPC to TPBI is 50:100, MgF 2 The molar ratio with TPBI is 16:100, and the thickness of the first organic barrier layer is 200 nanometers;

[0159] (9) Prepare the first inorganic barrier layer by magnetron sputterin...

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Abstract

The invention relates to an organic light-emitting diode device and a packaging method thereof. The organic light-emitting diode device comprises an anode conductive substrate, a light-emitting functional layer, a cathode and a packaging cover, wherein the light-emitting functional layer and the cathode are sequentially stacked on the anode conductive substrate, the packaging cover packages the light-emitting functional layer and the cathode on the anode conductive substrate and comprises a first organic barrier layer, a first inorganic barrier layer, a second organic barrier layer and a second inorganic barrier layer which sequentially cover the organic light-emitting functional layer and the cathode. Materials of the first organic barrier layer include a first hole transmission material, a first electron transmission material and a fluoride, materials of the first inorganic barrier layer include a telluride, a first nitride and first metal, materials of the second organic barrier layer include a second hole transmission material and a second electron transmission material, and materials of the second inorganic barrier layer include a second nitride, an alloy oxide and second metal. The service life of the organic light-emitting diode device is long.

Description

technical field [0001] The invention relates to the technical field of electroluminescence, in particular to an organic electroluminescence device and a packaging method thereof. Background technique [0002] Organic electroluminescent device (OLED) is a current-mode semiconductor light-emitting device based on organic materials. Its typical structure is to make a layer of tens of nanometers thick organic light-emitting material on the ITO glass as the light-emitting layer, and there is a metal electrode with a low work function above the light-emitting layer. When a voltage is applied to the electrodes, the light-emitting layer produces light radiation. [0003] OLED devices have the advantages of active luminescence, high luminous efficiency, low power consumption, lightness, thinness, and no viewing angle restrictions. They are considered by industry insiders to be the new generation of devices that are most likely to occupy a dominant position in the future lighting and...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/54H01L51/56
CPCH10K50/8445H10K50/841H10K2102/00H10K71/00
Inventor 周明杰钟铁涛王平张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD