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Organic light-emitting diode array substrate and display device

A technology of light-emitting diodes and array substrates, applied in the direction of diodes, light-emitting materials, organic semiconductor devices, etc., can solve the problems of complex preparation equipment and low luminous efficiency, improve luminous efficiency, increase the probability of mutual quenching, and increase the number of preparation equipment and cost effects

Inactive Publication Date: 2014-12-31
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problems to be solved by the present invention include, aiming at the problems of complex preparation equipment or low luminous efficiency of the existing organic light emitting diode array substrates, to provide an organic light emitting diode array substrate with simple preparation equipment and high luminous efficiency

Method used

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  • Organic light-emitting diode array substrate and display device
  • Organic light-emitting diode array substrate and display device
  • Organic light-emitting diode array substrate and display device

Examples

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Embodiment 1

[0027] This embodiment provides an organic light emitting diode array substrate, which includes a plurality of organic light emitting diodes. The organic light emitting diodes include sequentially arranged anodes, light emitting layers, and cathodes. The light emitting layers are divided into multiple colors, and are composed of host materials and doped The composition of the guest material in the host material; and the organic light emitting diode further includes:

[0028] The exciton blocking layer disposed between the cathode and the light-emitting layer and in contact with the light-emitting layer is composed of a host material of the light-emitting layer that has the largest highest occupied molecular orbital energy level and three-line state energy level.

[0029] The exciton blocking layer exists in the organic light emitting diode array substrate of this embodiment, so it can increase the probability of mutual quenching of triplet excitons and improve the luminous eff...

Embodiment 2

[0043] Such as figure 2 , image 3 As shown, the present embodiment provides an organic light emitting diode array substrate.

[0044] The organic light emitting diode array substrate includes a plurality of sub-pixels, and each sub-pixel is provided with an organic light-emitting diode; meanwhile, the sub-pixels are divided into three colors: red, green, and blue, that is, the organic light-emitting diodes in the sub-pixels are also divided into Red, green, blue three colors.

[0045] Specifically, such as figure 2 As shown, the organic light emitting diode is arranged on the substrate 9 (usually made of glass), and in the direction away from the substrate 9, it includes in turn:

[0046] (1) The anode 1 is made of transparent indium tin oxide material (ITO) with a thickness of 130 nm.

[0047] (2) Hole injection layer 2, which is composed of 4,4′,4″-tris(N-3-methylphenyl-N-phenylamino)triphenylamine (m-MTDATA, HOMO energy level 5.1eV, LUMO energy level 2.0eV) and a th...

Embodiment 3

[0065] Such as figure 2 As shown, the present embodiment provides an organic light emitting diode array substrate.

[0066] The organic light emitting diode array substrate includes a plurality of sub-pixels, and each sub-pixel is provided with an organic light-emitting diode; meanwhile, the sub-pixels are divided into three colors: red, green, and blue, that is, the organic light-emitting diodes in the sub-pixels are also divided into Red, green, blue three colors.

[0067] Specifically, such as figure 2 As shown, each organic light emitting diode is arranged on a substrate 9 (usually made of glass), and in a direction away from the substrate 9, the organic light emitting diodes include in turn:

[0068] (1) The anode 1 is made of transparent indium tin oxide material with a thickness of 15 nm; and a metal reflective layer (such as a silver reflective layer) is provided on the side of the anode close to the substrate 9 .

[0069] The reason why the reflective layer is pr...

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Abstract

The invention provides an organic light-emitting diode array substrate and a display device, which belong to the technical field of organic light-emitting diode display. The invention can solve the problem of conventional organic light-emitting diode array substrates that production equipment is complex or the luminous efficiency is low. The organic light-emitting diode array substrate comprises a plurality of organic light-emitting diodes, each organic light-emitting diode comprises an anode, a light-emitting layer and a cathode which are arranged sequentially, the light-emitting layer is divided into a variety of colors, and is composed of a host material and a guest material doped in the host material, moreover, the organic light-emitting diode also comprises an exciton barrier layer which is arranged between the cathode and the light-emitting layer and is in contact with the light-emitting layer, the exciton barrier layer is composed of a host material for the light-emitting layers, and the host material has maximum highest occupied molecular orbital energy level and triplet state energy level among the host materials of all the light-emitting layers.

Description

technical field [0001] The invention belongs to the technical field of organic light emitting diode display, and in particular relates to an organic light emitting diode array substrate and a display device. Background technique [0002] An organic light emitting diode (OLED) array substrate includes a plurality of sub-pixels, and each sub-pixel has an organic light emitting diode capable of emitting light of a specific color. An existing OLED structure such as figure 1 As shown, the anode 1, hole injection layer 2 (HIL), hole transport layer 3 (HTL), light emitting layer 4 (EML), electron transport layer 5 ( ETL), electron injection layer 6 (EIL), and cathode 7. [0003] Among them, the light-emitting layer is the core of the organic light-emitting diode, which is composed of a host material and a guest material doped in the host material. The highest occupied molecular orbital (HOMO) energy level of the host material is greater than that of the guest material, while the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/54H10K99/00
CPCC09K11/025C09K11/06H10K59/35H10K50/11H10K2101/40H10K50/18H10K2101/10H10K50/16H10K2101/27H10K2101/30H10K2102/351H10K59/8791H10K59/32H10K50/17H10K50/86H10K85/654
Inventor 高昕伟李娜
Owner BOE TECH GRP CO LTD
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