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Multicolour OLED (organic light-emitting diode), multicolour OLED unit and display device

A display device and color light technology, which is applied in the direction of electrical components, electric solid-state devices, semiconductor devices, etc., can solve the problems of multi-color OLED structure and process complexity, poor performance, etc., and achieve the effect of simple equipment requirements and reduced process steps

Inactive Publication Date: 2012-09-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the above-mentioned shortcomings, the present invention provides a multi-color OLED, a multi-color OLED unit and a display device in order to solve the problems of complex structures and processes and poor performance of multi-color OLEDs in the prior art. A stack of OLEDs can achieve better performance without making major improvements to existing processes

Method used

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  • Multicolour OLED (organic light-emitting diode), multicolour OLED unit and display device
  • Multicolour OLED (organic light-emitting diode), multicolour OLED unit and display device

Examples

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Embodiment 1

[0034] This embodiment 1 is a preferred embodiment of the present invention, which is only used to describe in detail a preferred structure of the multi-color OLED unit of the present invention. Those skilled in the art should be able to realize that the following description is only one This preferred embodiment is not a necessary embodiment of the present invention. Any known materials or processes used in the manufacture of OLED basic components in the prior art can be applied to the present invention to solve its technical problems, and therefore, on the basis of any known materials or processes performed by those skilled in the art without creative labor All implementations should fall within the protection scope of the present invention.

[0035] Specifically, the structure of the multi-color OLED unit of Example 1 is as figure 1 As shown, they are composed of a substrate 1, a first electrode 2, a first OLED 3, a second electrode 4, a second OLED 5, and a third electrode 6...

Embodiment 2

[0044] The multi-color OLED unit in the second embodiment also constitutes a top-emitting device unit, and its structure is basically the same as that of the first embodiment. figure 1 Shown. The difference is that in the present embodiment 2, the first OLED 3 is an inverted OLED device, and the second OLED 5 is a common top-emitting device. Therefore, the second electrode 4 is a common anode, and the first electrode 2 and the third electrode 6 are cathodes. and:

[0045] The first electrode 2 is a cathode with good reflectivity and opacity; it is a metal, or an alloy of several metals, or a combination of a metal, an alloy, and an oxide with good conductivity, such as: Al, Ag:Al, Ag : Mg, Ag / Al, Ag / Mg, ITO / Al, ITO / Ag:Al, ITO / Ag:Mg, ITO / Ag / Al, ITO / Ag / Mg, etc. This electrode needs to have good conductivity, good reflectivity, good chemical and morphological stability, and a work function that matches the second organic layer of the first OLED 3 (preferably, the work function is...

Embodiment 3

[0049] The structure of the multi-color OLED unit in Example 3 is also figure 1 As shown, the difference is that it changes the two solutions of Embodiment 1 and Embodiment 2 into a bottom emitting device unit, that is, a transparent substrate 1 and a first electrode 2 connected to the substrate 1 also need to be It is transparent, and the third electrode 6 needs to be an electrode with good reflectivity.

[0050] Specifically, when the first electrode 2 is an anode, it needs to be a transparent anode, which can be a metal, or an alloy of several metals, or an oxide with a good conductive function, or a metal, an alloy, and an oxide with a good conductive function. Combinations, such as: Ag, Au, Pd, Pt, ITO, IZO, Ag:Au, Ag:Pd, Ag:Pt, Al:Au, Al:Pd, Al:Pt, Ag:Au, Ag / Pd, Ag / Pt, Ag / ITO, Ag / IZO, Al / Au, Al / Pd, Al / Pt, Al / ITO, Al / IZO, Ag:Pd / ITO, Ag:Pt / ITO, Al:Au / ITO, Al: Pd / ITO, Al:Pt / ITO, Ag:Au / ITO, Ag:Pd / IZO, Ag:Pt / IZO, Al:Au / IZO, Al:Pd / IZO, Al:Pt / IZO, Ag:Au / IZO etc. This electro...

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Abstract

The invention relates to the technical field of panel display, and provides a multicolour OLED (organic light-emitting diode), a multicolour OLED unit and a display device. According to the invention, the multicolour OLED emitting lights with different colours in one unit can be obtained by stacking a plurality of OLEDs, and arranging only one layer of common electrodes between the two adjacent OLEDs, so that the obtained multicolour OLED unit can greatly reduce the size of the pixel point of a displayer and obtain a good display effect; simultaneously, process steps are reduced, the process can be realized without the need to change present equipment, and requirements on the equipment are simple.

Description

Technical field [0001] The present invention relates to the technical field of flat panel displays, in particular to a multi-color OLED, a multi-color OLED unit and a display device. Background technique [0002] Traditional CRT (Cathode ray tubes) displays have been gradually replaced by various flat-panel displays due to their serious deficiencies in thickness, weight, radiation and power consumption. Known flat-panel display technologies include LED (Light Emitting Diode), LCD (Liquid Crystal Display), PDP (Plasma Display Panel), FED (Field Emission Display), OLED (Organic Light-Emitting Diode) Diode) etc. [0003] Although LCD is currently the most mainstream flat panel display, especially with the combination of TFT (Thin Film Transistor) technology, its response speed, brightness, contrast, and the lightness of the display have been greatly improved, but due to the LCD panel itself It cannot emit light. This type of display must use a backlight to illuminate the panel to em...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L27/32
CPCH10K50/131
Inventor 杨栋芳肖田
Owner BOE TECH GRP CO LTD
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