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Organic electroluminescence display panel, preparation method thereof and display device

An electroluminescent display and display panel technology, applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problems of pixel crosstalk, high lateral conductivity of the charge generation layer, etc., and achieve the effect of avoiding pixel crosstalk

Inactive Publication Date: 2017-11-17
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the tandem OLED display panel, since the charge generation layer covers the entire display area (that is, the charge generation layer of the same layer is continuous between each pixel unit and its adjacent pixel units), and the charge generation layer has a large lateral conductivity, This can easily lead to pixel crosstalk problems

Method used

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  • Organic electroluminescence display panel, preparation method thereof and display device
  • Organic electroluminescence display panel, preparation method thereof and display device
  • Organic electroluminescence display panel, preparation method thereof and display device

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preparation example Construction

[0068] Based on the same inventive concept, see Figure 6 , the embodiment of the present invention also provides a method for preparing an organic electroluminescence display panel, comprising the following steps:

[0069] S101, forming an anode layer on the substrate;

[0070] S102. Form a pixel defining layer defining pixel units on the substrate formed with the anode layer; wherein, grooves are provided in the pixel defining layer between adjacent pixel units;

[0071] S103, forming at least two organic electroluminescent units in series covering the anode layer and the pixel defining layer on the substrate formed with the pixel defining layer, and each adjacent organic electroluminescent unit A charge generation layer is formed between them; wherein, each layer of the charge generation layer is disconnected at the groove;

[0072] S104, forming a cathode layer covering the anode layer and the pixel defining layer on the organic electroluminescence unit farthest from the...

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Abstract

The invention provides an organic electroluminescence display panel, a preparation method thereof and a display device, and is used for avoiding the problem of pixel crosstalk caused by transverse electric conduction of charge generation layers. The organic electroluminescence display panel provided by the invention comprises a substrate, an anode layer and pixel defining layers, for defining pixel units, arranged on the substrate, and a cathode layer covering the anode layer and the pixel defining layers, wherein at least two serially-connected organic electroluminescence units covering the anode layer and the pixel defining layers are arranged between the anode layer and the cathode layer; a charge generation layer is arranged between every two adjacent organic electroluminescence units; a groove is formed in each pixel defining layer between every two adjacent pixel units, each charge generation layer is disconnected at the position of the corresponding groove, and the cathode layer is connected at the position of the corresponding groove.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic electroluminescence display panel, a preparation method and a display device. Background technique [0002] Compared with Liquid Crystal Display (LCD), organic electroluminescent display panel (Organic Electroluminescent Display, OLED) has self-illumination, high luminous efficiency, low power consumption, fast response, wide viewing angle, high brightness, bright color, Light and thin and other advantages, it is considered to be the next generation of display technology. [0003] In order to improve the performance of the OLED display panel, a tandem OLED display panel is proposed. At present, the organic functional layer of the tandem OLED display panel can be prepared by using a fine metal mask (Fine Metal Mask, FMM) or an open mask (Open Mask). ), among them, the cost of the open mask is lower than that of the fine metal mask, and the process is simple, such as ...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/56H01L27/32
CPCH10K59/122H10K50/131H10K50/822H10K59/1201H10K71/00H10K71/60H10K50/19H10K71/164H10K71/166H10K71/233
Inventor 王辉锋张旺方金钢
Owner BOE TECH GRP CO LTD
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