Organic LED of multilayer structure

A light-emitting diode and multi-layer structure technology, which is applied in the direction of electrical components, circuits, and electric solid-state devices, can solve the problems of low charge injection efficiency and high drive voltage, and achieve the effect of reducing drive voltage and improving charge injection efficiency

Inactive Publication Date: 2015-04-29
SUZHOU KUNK & SAM LIGHTING TECH CO LTD
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  • Abstract
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Problems solved by technology

Commonly there are three-layer structure and multi-layer structure, wherein, the multi-layer structure is based on the three-layer structure, adding the electron in

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  • Organic LED of multilayer structure

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Embodiment Construction

[0013] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0014] A multilayer organic light emitting diode, such as figure 1 As shown, it includes a cathode layer, an electron injection layer 2, an electron transport layer 3, a light emitting layer 4, a hole transport layer 5, a hole injection layer 6, an anode layer and a glass substrate 9 stacked sequentially from top to bottom. Wherein, the cathode layer is a MgAg alloy layer 1, the anode layer is a conductive glass layer 8 (a layer of indium tin oxide, commonly known as ITO, is plated by sputtering, evaporation and other methods), and the hole injection layer 6 A buffer layer 7 is also arranged between the conductive glass layer 8, the buffer layer 7...

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Abstract

The invention discloses an organic LED of a multilayer structure. The organic LED comprises a cathode layer, an electron injection layer, an electron transfer layer, a luminous layer, a hole transfer layer, a hole injection layer, an anode layer and a glass substrate which are stacked up in sequence from top to bottom, and is characterized in that the cathode layer is an Mg-Ag alloy layer; the anode layer is a conducting glass layer; a buffer layer is also arranged between the hole injection layer and the conducting glass layer, and the buffer layer is an insulating substance layer and is 0.6-1.8 nm in thickness; the hole injection layer is a PEDOT layer. Preferably, the buffer layer can be a silicon dioxide layer or a lithium fluoride layer. Preferably, the electron injection layer is an alkali metal compound layer or an alkali metal fluoride layer. The conventional multilayer structure is improved, so that the charge injection efficiency of the hole injection layer is improved, and the driving voltage is reduced.

Description

technical field [0001] The invention relates to an organic light-emitting diode with a multilayer structure. Background technique [0002] Organic light-emitting diodes, also known as organic electro-laser displays, have the characteristics of self-illumination. They use very thin organic material coatings and glass substrates. When current passes, these organic materials will emit light, and the OLED display screen has a large viewing angle. , and can save power. Commonly there are three-layer structure and multi-layer structure, wherein, the multi-layer structure is based on the three-layer structure, adding the electron injection layer and the hole injection layer, but the charge injection efficiency of the hole injection layer is relatively low, and the drive The voltage is relatively high. Contents of the invention [0003] In view of the above problems, the present invention provides a multilayer organic light emitting diode, which improves the existing multilayer ...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/54H01L51/50
CPCH10K85/1135H10K50/17H10K50/80H10K50/81H10K50/82
Inventor 傅立铭
Owner SUZHOU KUNK & SAM LIGHTING TECH CO LTD
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