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An organic light-emitting display panel, its preparation method, and display device

A technology of light-emitting display and organic light-emitting layer, which is applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc. It can solve the problems of poor light transmittance and conductivity of cathodes, reduce work function, reduce production costs, and improve light emission efficiency effect

Active Publication Date: 2019-12-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an organic light emitting display panel, a preparation method and a display device thereof, to solve the problem of poor light transmittance and electrical conductivity of the cathode in the organic light emitting display panel in the prior art, improve the light extraction efficiency of the display panel, and simplify the The preparation process reduces the cost of device preparation

Method used

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  • An organic light-emitting display panel, its preparation method, and display device
  • An organic light-emitting display panel, its preparation method, and display device
  • An organic light-emitting display panel, its preparation method, and display device

Examples

Experimental program
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Embodiment 1

[0037] figure 1 A schematic structural diagram of an organic light-emitting display panel provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the organic light-emitting display panel 100 includes a base substrate 110, a reflective anode layer 120 located on the base substrate 110, an organic light-emitting layer 130 located on the side of the reflective anode layer 120 away from the base substrate 110, an organic light-emitting layer 130 located The transparent cathode layer 140 on the side away from the reflective anode layer 120;

[0038] Wherein, the transparent cathode layer 140 includes a first transparent cathode layer 141 and a second transparent cathode layer 142, the first transparent cathode layer 141 is located on the side of the second transparent cathode layer 142 close to the organic light-emitting layer 130, and the first transparent cathode layer 141 The surface tension of is greater than the surface tension of the second transpar...

Embodiment 2

[0056] figure 2 It is a flow chart of the method for preparing an organic light-emitting display panel in Example 2 of the present invention, as shown in figure 2 shown, including the following steps:

[0057] S1: providing a base substrate;

[0058] S2: preparing a reflective anode layer on the base substrate;

[0059] S3: preparing an organic light-emitting layer on the side of the reflective anode away from the substrate;

[0060] S4: preparing a transparent cathode layer on the side of the organic light-emitting layer away from the reflective anode;

[0061] Wherein, the transparent cathode layer includes a first transparent cathode layer and a second transparent cathode layer, the first transparent cathode layer is located on the side of the second transparent cathode layer close to the organic light-emitting layer, and the surface tension of the first transparent cathode layer is greater than that of the second transparent cathode layer. The surface tension of the ...

Embodiment 3

[0072] The embodiment of the present invention also provides a display device. image 3 It is a schematic structural diagram of a display device provided by an embodiment of the present invention. see image 3 , the display device includes a display panel 100, and may also include a driving circuit and other devices for supporting the normal operation of the display device. Wherein, the display panel 100 is the display panel in the first embodiment above. The above-mentioned display device may be one of a mobile phone, a desktop computer, a notebook, a tablet computer, and electronic paper.

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Abstract

The invention discloses an organic light-emitting display panel, a preparation method thereof, and a display device, wherein the organic light-emitting display panel includes a base substrate; a reflective anode layer located on the base substrate; a reflective anode layer located away from the reflective anode layer An organic light-emitting layer on one side of the base substrate; a transparent cathode layer located on a side of the organic light-emitting layer away from the reflective anode layer; wherein, the transparent cathode layer includes a first transparent cathode layer and a second transparent cathode layer , the first transparent cathode layer is located on a side of the second transparent cathode layer close to the organic light-emitting layer, and the surface tension of the first transparent cathode layer is greater than the surface tension of the second transparent cathode layer. The technical solution of the present invention solves the problem of poor cathode light transmittance and reflectivity of traditional organic light-emitting display panels, improves the luminous efficiency and color purity of the display panel, simplifies the preparation process, and reduces the device preparation cost.

Description

technical field [0001] Embodiments of the present invention relate to the field of organic light-emitting technologies, and in particular, to an organic light-emitting display panel, a manufacturing method thereof, and a display device. Background technique [0002] Organic light-emitting diodes (Organic Light-Emitting Diode, OLED) can be divided into two structures according to the direction in which light is emitted from the device: one is a bottom-emitting device, and the other is a top-emitting device. Since the light emitted by the top-emitting device exits from the top of the device, it can effectively solve the problems of reduced aperture ratio and reduced brightness of the display screen caused by complex thin-film field effect transistor (Thin-film Transistor, TFT) compensation circuits. Therefore, the existing small-size, high-resolution OLED display screens all use top-emitting OLED devices. [0003] Because the light of the top-emitting OLED is emitted from the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L51/56
CPCH10K50/828H10K71/00
Inventor 邹建华王磊蓝露华徐苗陶洪彭俊彪
Owner SOUTH CHINA UNIV OF TECH