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Array substrate, preparation method thereof and organic electroluminescence display device

A technology of array substrate and light-emitting layer, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problem of total reflection light-emitting efficiency at the interface between electrode layer and substrate, and achieve the effect of enhancing light-emitting efficiency

Inactive Publication Date: 2014-06-25
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low light extraction efficiency caused by total reflection easily occurring at the interface between the electrode layer and the substrate in the prior art array substrate and organic electroluminescent display device, and to provide an array substrate that can improve the light extraction efficiency , organic electroluminescence display device

Method used

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  • Array substrate, preparation method thereof and organic electroluminescence display device
  • Array substrate, preparation method thereof and organic electroluminescence display device
  • Array substrate, preparation method thereof and organic electroluminescence display device

Examples

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Embodiment 1

[0031] like figure 2 As shown, this embodiment provides an array substrate, including a substrate 1, a planarization layer 2, a light-emitting layer 4 arranged in sequence on the substrate 1, and electrode layers located on both sides of the light-emitting layer 4 for supplying voltage to the light-emitting layer 4 , the side of the substrate 1 close to the light-emitting layer 4 is the inner surface 11, the inner surface 11 is a rough surface, the electrode layer between the inner surface 11 and the light-emitting layer 4 is the first electrode layer 3, and the other side of the light-emitting layer 4 is the first electrode layer 3. The side is the second electrode layer 5, and the above-mentioned first electrode layer and the second electrode layer can be the cathode electrode layer and the anode electrode layer, respectively.

[0032] Since the inner side surface 11 of the substrate 1 of the array substrate of the present invention is a rough surface, light ( figure 2 In...

Embodiment 2

[0043] This embodiment provides a method for preparing the above-mentioned array substrate, which includes the following steps:

[0044] 1) Prepare a substrate with at least one rough surface;

[0045] The substrate 1 in this embodiment is a glass substrate, and the glass can also be roughened by using the processing methods in the prior art, such as grinding with a grinding wheel or etching with a hydrogen fluoride solution, etc., to control the roughness of the rough surface Ra in the range of 5-500nm , where Ra is the arithmetic mean deviation of the contour. The glass substrate of the present embodiment is polished with a grinding wheel to form a glass substrate with a rough surface, wherein the Ra of the roughness of the glass substrate is 300 nm.

[0046] It should be understood that commercially available glass substrates with rough surfaces can be used as glass substrates with rough surfaces; for substrates prepared from other materials, known methods can be used in t...

Embodiment 3

[0057] This embodiment provides an organic electroluminescent display device, which includes the above-mentioned organic electroluminescent array substrate.

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Abstract

The invention provides an array substrate, a preparation method of the array substrate and an organic electroluminescence display device, and belongs to the technical field of display. The problem that an existing array substrate and an existing organic electroluminescence display device are low in light emitting efficiency can be solved. The array substrate comprises a substrate body, a luminous layer arranged on the substrate body, and electrode layers, wherein the electrode layers are located on the two sides of the luminous layer and provide voltage for the luminous layer. The substrate body is at least provided with a rough surface. According to the array substrate and the organic electroluminescence display device, light can be scattered or diffracted on the rough surface of the substrate body, and the light emitting efficiency is improved.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to an array substrate, a preparation method thereof, and an organic electroluminescence display device comprising the array substrate. Background technique [0002] In the organic light emitting diode (Organic Electroluminesence Display, OLED) display technology, the internal quantum efficiency can reach 100%, while the external quantum efficiency is only 20%. The reason is that the surface plasmon mode, waveguide mode and substrate in the OLED display device structure The modes work together to make it difficult for light to be emitted from the device structure. [0003] like figure 1 As shown, the traditional OLED device structure includes a substrate 1 and a light-emitting layer 4 disposed on the substrate 1, and electrode layers located on both sides of the light-emitting layer 4 to provide voltage for the light-emitting layer 4, and the electrode layer includes a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L21/77H01L27/32
CPCH10K77/10H10K59/877Y02E10/549
Inventor 侯文军刘则
Owner BOE TECH GRP CO LTD
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