Transparent cathode structure, organic light emitting diode, array substrate and display device
A technology of light-emitting diodes and transparent cathodes, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as the difficulty of injecting electrons into OLEDs and limit the performance of OLEDs, and achieve the effect of improving the ability of injecting electrons and improving performance
Active Publication Date: 2022-07-08
BOE TECH GRP CO LTD
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Problems solved by technology
The dielectric layer is usually made of high refractive index materials, such as oxides such as molybdenum trioxide or tungsten oxide; however, it is difficult for these dielectric materials to inject electrons into OLEDs, which limits the performance of OLEDs
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[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present disclosure.
[0035] In the figures, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0036] The terms "a", "an", "the" are used to indicate t...
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Abstract
The present disclosure provides a transparent cathode structure, an organic light emitting diode, an array substrate and a display device, belonging to the technical field of display. The transparent cathode structure includes a first dielectric layer, a transparent metal layer and a second dielectric layer; wherein the first dielectric layer includes a first dielectric material and a first dopant material mixed with each other; the work function of the first dopant material lower than the work function of the first dielectric material; a transparent metal layer is provided on a surface of the first dielectric layer; a second dielectric layer is provided on a surface of the transparent metal layer away from the first dielectric layer. The transparent cathode structure can improve the performance of the organic light emitting diode.
Description
technical field [0001] The present disclosure relates to the field of display technology, and in particular, to a transparent cathode structure, an organic light emitting diode, an array substrate and a display device. Background technique [0002] The transparent electrodes of the dielectric-metal-dielectric (DMD) structure have the advantages of convenient preparation, low cost, and excellent electrical properties, and can be used as transparent electrodes of OLEDs (organic light-emitting diodes). The dielectric layer is usually made of materials with high refractive index, such as oxides such as molybdenum trioxide or tungsten oxide; however, these dielectric materials are difficult to inject electrons into the OLED, which limits the performance of the OLED. [0003] The above information disclosed in this Background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior ar...
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IPC IPC(8): H01L51/52
CPCH10K50/828
Inventor 刘晓云黄清雨闫华杰焦志强康亮亮
Owner BOE TECH GRP CO LTD