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Hole injection layer ink, organic light-emitting device and manufacture method of hole injection layer ink

A technology of hole injection layer and manufacturing method, which is applied in the fields of electrical solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problem of affecting the uniformity of film formation of the hole transport layer and the inability to effectively control the ink climbing of the hole transport layer. climbing height etc.

Active Publication Date: 2019-05-10
BOE TECH GRP CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the film forming process, after the hole transport and injection layer is formed in the pixel defining layer, the ink will climb to a certain extent on the pixel defining layer. When printing the hole transport layer, the ink density of the hole transport layer cannot be effectively controlled. Climbing height, thus affecting the film formation uniformity of the hole transport layer

Method used

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  • Hole injection layer ink, organic light-emitting device and manufacture method of hole injection layer ink
  • Hole injection layer ink, organic light-emitting device and manufacture method of hole injection layer ink

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Embodiment Construction

[0030] Inkjet printing has the advantages of low equipment cost, no size limit, and full-color printing. In the related art, when the hole injection layer and the hole transport layer are fabricated by inkjet printing, the pixel definition layer is used to limit the pixel size and ink flow, and at the same time match the performance of the ink to meet the requirements of uniformity of film formation. During the film forming process, after the hole injection layer is formed in the pixel defining layer, the hole injection layer ink will climb a certain amount on the pixel defining layer, and the hole cannot be effectively controlled when printing the hole transport layer. The climbing height of the ink in the transport layer affects the uniformity of film formation of the hole transport layer.

[0031] In view of the above-mentioned problems existing in the hole injection layer ink in the related art, the embodiment of the present invention provides a hole injection layer ink, a...

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Abstract

The invention discloses hole injection layer ink, an organic light-emitting device and a preparation method of the hole injection layer ink. The hole injection layer ink comprises a solvent material,a hole transmission macromolecule material and a hole transmission nano-sphere, the hole transmission macromolecule material and the hole transmission nano-sphere are dissolved in the solvent material, the hole transmission macromolecule material and the hole transmission nano-sphere are materials with hole transmission characteristics for organic electrons, the hole transmission macromolecule material is provided with a preset contact angle, the hole transmission nano-sphere is arranged in the solvent material, so that the hole injection layer ink can be provided with a preset contact angle,the hole injection layer ink can achieve lyophobicity, and the film forming uniformity of a film layer adjacent to a hole injection layer can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a hole injection layer ink, an organic electroluminescent device and a manufacturing method thereof. Background technique [0002] Organic electroluminescent devices are widely used in lighting and display fields due to their many advantages such as environmental protection, energy saving, high efficiency, long life, fast response speed, all solid state, shock resistance and good safety performance. [0003] The deposition methods of the inner film layer of organic electroluminescent devices mainly include vacuum evaporation and solution process. One is vacuum evaporation, which is suitable for small organic molecules. Its film formation is uniform and the technology is relatively mature, but the equipment investment is large and Low material utilization rate and low alignment accuracy of mask plates for large-sized products; second, solution process, including spin coating, ink...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/30C09D11/36H01L51/54H01L51/50H01L51/00H10K99/00
Inventor 侯文军
Owner BOE TECH GRP CO LTD
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