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Organic light-emitting device and display panel

A technology for organic light-emitting devices and display panels, which is applied in the manufacturing of electric solid-state devices, semiconductor devices, and semiconductor/solid-state devices, etc., can solve the problems of low film quality of cathode film layer, limitation of AMOLED device display, poor cathode transmittance, etc. , to achieve the effect of improving the cathode transmittance and film quality, and reducing the preparation cost

Inactive Publication Date: 2019-05-14
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in figure 1 In the described AMOLED device, the thickness of the second electrode (cathode) 7 is generally greater than or equal to 100nm, which makes the cathode transmittance of the device poor and the film quality of the cathode film layer is low, thereby limiting the AMOLED device. Applications in displays, especially flexible displays

Method used

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  • Organic light-emitting device and display panel
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  • Organic light-emitting device and display panel

Examples

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Embodiment 1

[0026] Embodiment 1. Organic electroluminescence device

[0027] In this embodiment, an organic electroluminescent device is provided, and the organic electroluminescent device is a top emission type organic electroluminescent device. Such as figure 2 As shown, the organic electroluminescent device 100 includes: a first electrode 11, a second electrode 12 disposed opposite to the first electrode, an organic light emitting device disposed between the first electrode 11 and the second electrode 12 layer 13 , and an electron injection layer 14 disposed between the organic light emitting layer 13 and the second electrode 12 . The electron injection layer 14 is a copper-doped rare earth element layer. The doping concentration of copper in the rare earth element layer is less than 50%, and the specific doping concentration may be determined according to actual process requirements, such as but not limited to any value in the range of 0.1% to 49.9%.

[0028] The rare earth elemen...

Embodiment 2

[0048] Example 2. Display panel

[0049] In this embodiment, a display panel is provided. The display panel includes the above-mentioned organic electroluminescent device 100 or the organic electroluminescent device 110 .

[0050] See Figure 4 , Figure 4 Shown is a display panel 200 according to a preferred embodiment of the present invention, taking the organic electroluminescent device 110 as an example.

[0051] Such as Figure 4 As shown, the display panel 200 sequentially includes a substrate 21 , an organic electroluminescent device formed on the substrate 21 , and an encapsulation layer 22 covering the organic electroluminescent device.

[0052] It will be understood by those skilled in the art that the substrate 21 may be a glass substrate, a polyimide substrate or a film substrate, and a structure that has undergone several previous processes is formed on the substrate 21, for example, there may be an inorganic film Layers, several film layers in the thin film ...

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Abstract

The invention discloses an organic light-emitting device. The device comprises a first electrode, a second electrode opposite to the first electrode, and an organic light-emitting layer arranged between the first electrode and the second electrode, wherein an electron injection layer is arranged between the organic light-emitting layer and the second electrode; and the electron injection layer isa copper-doped rare earth element layer.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic light emitting device and a display panel using the organic light emitting device. Background technique [0002] Organic Light-Emitting Diode (OLED) has become a new generation of flat-panel display technology due to its excellent characteristics such as self-illumination, low energy consumption, wide viewing angle, rich colors, fast response, and flexible screen preparation. [0003] According to the driving method, OLED can be divided into passive OLED (PMOLED) and active OLED (AMOLED). In the process of PMOLED display, higher current and voltage are required, which increases power consumption and sharply reduces display efficiency, and its application in large-area display is limited. In AMOLED, it is driven by thin film transistors, which can light up each pixel individually, and has the advantages of high brightness, high resolution, low power consumption, easy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54
Inventor 袁涛
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD