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Ink composition, organic light-emitting device using same, and manufacturing method therefor

A composition, compound technology, applied in chemical instruments and methods, semiconductor/solid-state device manufacturing, luminescent materials, etc., which can solve the problems of film image degradation, low solubility, and increased film roughness

Active Publication Date: 2020-08-25
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a disadvantage in that the film has a U shape or a convex (∩) shape, or a film with an uneven surface such as pitch is formed
However, diol-based solvents generally have low solubility to OLED materials, and when benzene-based solvents and diol-based solvents are included in the ink, a sharp drop in film image is obtained compared to the effect of improving film flatness ( Precipitation, increased film roughness) disadvantages

Method used

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  • Ink composition, organic light-emitting device using same, and manufacturing method therefor
  • Ink composition, organic light-emitting device using same, and manufacturing method therefor
  • Ink composition, organic light-emitting device using same, and manufacturing method therefor

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Embodiment approach

[0175] The ink composition according to one embodiment of the present specification can be prepared using the preparation method described below.

[0176] Hereinafter, in order to specifically describe the present specification, the present specification will be described in detail with reference to examples. However, the embodiments according to the present specification can be modified into various forms, and the scope of the present specification should not be construed as being limited to the embodiments described below. In order to more fully describe this specification to those of ordinary skill in the art, the examples of this specification are provided.

[0177]

[0178] 1. With respect to 100 parts by weight of a solvent, 2.0 parts by weight of functional materials (compounds 1 to 6) were dissolved to prepare an ink composition.

[0179] 2. Fill the inside of the OLED pixel with ink using an inkjet printing method, then use a vacuum drying device to vacuum dry the ...

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Abstract

The present specification relates to: an ink composition comprising a first solvent represented by chemical formula 1 and a compound represented by chemical formula 2, or an ink composition comprisinga first solvent represented by chemical formula 1, a second solvent represented by chemical formula 3 or chemical formula 4, and a compound represented by chemical formula 2; an organic light-emitting device comprising the ink composition and a cured material thereof; and a manufacturing method therefor.

Description

technical field [0001] This disclosure claims priority and benefit from Korean Patent Application No. 10-2018-0087801 filed with the Korean Intellectual Property Office on July 27, 2018, the entire contents of which are incorporated herein by reference. [0002] The present specification relates to an ink composition, an organic light emitting device formed using the ink composition, and a method for manufacturing the organic light emitting device. Background technique [0003] Solvent selection is of paramount importance when using OLED inks in the inkjet process. When preparing a functional layer film, it is required that the nozzle does not dry out so that the ink is stably discharged from the nozzle, and a flat film needs to be formed without precipitation / phase separation of materials. For this reason, it is necessary to contain a solvent having sufficiently low high-boiling point characteristics while having high solubility to OLED materials in the ink composition. ...

Claims

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Application Information

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IPC IPC(8): C09D11/36H01L51/00H01L51/50
CPCC09D11/36C09K11/06C09D11/322H10K71/15H10K71/135H10K71/30H10K85/633H10K50/15H10K50/17H10K50/11H10K85/649C09K2211/1007C09K2211/1011C09K2211/1014H10K85/626
Inventor 郑智英金美经
Owner LG CHEM LTD
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