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Organic LED element and its material

A technology of light-emitting diodes and organic light-emitting layers, which is applied in the field of organic light-emitting diode elements and materials used in organic light-emitting diode elements, can solve the problems of low efficiency and insufficient working efficiency of stable elements, and achieve the reduction of driving voltage, improvement of work efficiency and The effect of stability

Inactive Publication Date: 2006-10-04
RITDISPLAY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in the known technology, the method of using the cathode formed by lithium and aluminum metal alloys to reduce the driving voltage of the element still has its limit for the driving voltage that can be reduced.
In addition, the method of using an organic compound doped with a metal and having an electron-withdrawing group as the electron injection layer to reduce the driving voltage of the device can reduce the driving voltage of the device, but the stability and working efficiency of this material are still insufficient.

Method used

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  • Organic LED element and its material
  • Organic LED element and its material
  • Organic LED element and its material

Examples

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example 1

[0105] Example 1 discloses a manufacturing process of an OLED element with a four-layer structure. Please refer to image 3 Firstly, an indium tin oxide layer is formed on the glass substrate 100 as an anode 102 . Next, a hole transport layer 112 with a thickness of about 60 nm is plated on the surface of the anode 102 in an environment with a vacuum degree of 10 −6 Torr. Wherein, the material of the hole transport layer 112 is NPB.

[0106] Next, an organic light emitting layer 104 is plated on the surface of the hole transport layer 112 . Wherein, the thickness of the organic light emitting layer 104 is 20 nm. In this example, the chemical formula of the light-emitting material of the organic light-emitting layer 104 is shown in formula (11).

[0107]

[0108] Formula (11)

[0109] Afterwards, a layer of AlQ3 is plated on the organic light emitting layer 104 to serve as an electron transport layer 110 . Wherein, the electron transport layer has a thickness of 20nm. ...

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Abstract

The present invention is organic LED element and its material. The organic LED element includes an anode configured on transparent substrate, an organic light emitting layer on the anode, a cathode on the organic light emitting layer and a metal doped layer between the cathode and the organic light emitting layer. The metal doped layer has the component of metal doped organic compound.

Description

technical field [0001] The present invention relates to an organic light emitting diode element (OLED) and a material applied to the organic light emitting diode element, and particularly relates to an organic light emitting diode element with low driving voltage and the material thereof. Background technique [0002] Currently, displays with light weight and high efficiency characteristics, such as liquid crystal displays, have been widely developed. However, LCD still has many problems, such as not wide enough viewing angle, not fast enough response time to be used in high-speed animation, and requiring a backlight which consumes more power, etc. In particular, there is still a problem in the liquid crystal display, that is, it is impossible to achieve a large-scale panel. [0003] However, there is now a new flat panel display technology that can solve the above problems. This new flat panel display is an organic light emitting diode display developed in recent years. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00H01L51/50H05B33/14C09K11/06
Inventor 梁文杰杨贵惠廖启智陈鸿霖李勇志周义敏唐子钦
Owner RITDISPLAY