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OLED device with high stability and preparation method thereof

A high-stability, device technology, applied in the field of OLED devices, can solve the problems of low lifespan, low aperture ratio, poor water and oxygen barrier ability, etc., and achieve the effect of reducing pixel shrinkage, reducing the risk of leakage current, and high stability.

Active Publication Date: 2019-06-14
GUAN YEOLIGHT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention lies in the problems of poor water and oxygen barrier ability, low service life and low aperture ratio of PMOLED devices in the prior art, thereby providing a high-stability PMOLED device and improving the stability of the screen body , effectively increasing the pixel aperture ratio

Method used

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  • OLED device with high stability and preparation method thereof
  • OLED device with high stability and preparation method thereof
  • OLED device with high stability and preparation method thereof

Examples

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preparation example Construction

[0054] A method for preparing an OLED device with high stability, comprising the steps of:

[0055] S1. A first electrode material layer is prepared on the substrate, and the first electrode material layer is patterned to form a plurality of first electrode units 1;

[0056] S2, on the first electrode unit 1, make spacers 4 arranged in parallel at intervals and arranged perpendicular to the direction of the first electrode unit 1;

[0057] S3, on the basis of step S2, fabricate the luminescent material layer 2 and the second electrode layer 3 by evaporation, and package.

[0058] When the insulating material layer 5 is provided in the first patterned area, S11 is also included between the step S1 and the step S2: an insulating material layer is prepared in the first patterned area on the basis of the step S1.

[0059] As another implementation, such as Figure 3 to Figure 10 As shown, a part of the first electrode unit 1 below the isolation column 4 is patterned into a secon...

Embodiment 1

[0073] Device 1: as figure 1 and figure 2 As shown, the OLED device with high stability provided by this embodiment includes a substrate and a first electrode material layer (ITO layer) arranged on the substrate, and the first electrode material layer is patterned in the longitudinal direction A plurality of first electrode units 1, between the adjacent first electrode units 1 is the first patterned area 6 (that is, the longitudinal patterned area in the figure), and the horizontal direction on the first electrode unit 1 is provided with isolation Pillar 4 , the isolation post 4 is arranged in contact with the first electrode unit 1 . The first patterned area 6 is provided with an insulating material layer 5 . The insulating material layer 5 and the isolation column 4 are made of conventional insulating material layer phenolic resin.

[0074] Device 2: The structure is the same as that of device 1, wherein the insulating material layer 5 is an inorganic material layer such...

Embodiment 2

[0086] Device 3: No insulating material layer is provided under the isolation pillars and in the first patterned region. The preparation method of the device 3 does not include step S11.

[0087] In this embodiment, no insulating material layer is provided in the first patterned region 6 , and no insulating material layer is provided between the isolation post 4 and the first electrode unit 1 , so the path of moisture penetration can be reduced. In order to reduce the risk of short circuit caused by not providing an insulating material layer, the thickness of the luminescent material layer 2 is 300 nm to prevent leakage current at the edge of the first electrode unit, and the second electrode layer 3 is deposited on the luminescent material layer 2 . Unless otherwise specified, the material and thickness of each layer are the same as those of device 1.

[0088] Evaporate 200nm thick N,N-di(naphthalene-1-yl)-N,N'-diphenyl-benzidine (NPB) as hole transport layer; 9,10-di(2-nap...

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Abstract

The invention provides an OLED device with high stability and a preparation method thereof, the device includes a substrate, a first electrode material layer disposed on the substrate, and isolation posts. The first electrode material layer is patterned to form a plurality of first electrode cells, a first patterned region is arranged between adjacent first electrode cells, the isolation posts areparallel to and spaced from one another, and are perpendicular to the direction of the first electrode cell. The device is characterized in that at least a portion of the isolation columns are in direct contact with the first electrode cells and / or the substrate. By not providing an insulating material layer under the isolation column, the stability of the screen body is improved, and the pixel opening rate is effectively increased.

Description

technical field [0001] The invention relates to an OLED device, in particular to an OLED device with high stability and a preparation method thereof. Background technique [0002] After nearly 30 years of development, organic electroluminescent devices (English full name is Organic Light Emitting Device, referred to as OLED), as the next generation display technology, have achieved a certain degree in the display field due to the advantages of fast response, high contrast, and planarization. application. A typical organic electroluminescent device generally includes a transparent substrate, a first transparent electrode 1 , a second electrode 3 , and a luminescent material layer 2 disposed between the two electrodes. [0003] As early as 20 years ago, there was a passive organic electroluminescent display (PMOLED), which was widely used in medical, electronics, wearable products, household appliances and other fields. Generally, PMOLED adopts the method of curing and seali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
Inventor 陈旭张国辉董艳波于永超吴海燕
Owner GUAN YEOLIGHT TECH CO LTD
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