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Coating liquid production method, coating production method, coating, organic electroluminsecent element, display device and illumination device

A manufacturing method and technology for coating liquid, which can be applied to devices for coating liquid on surfaces, lighting devices, electroluminescent light sources, etc., which can solve problems such as performance degradation of organic functional layers, and achieve the effect of high storability.

Active Publication Date: 2019-11-08
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, especially when impurities such as a dispersion stabilizer are contained in the organic functional layer of the organic EL element, there is a problem that the performance of the organic functional layer is degraded by the dispersion stabilizer.

Method used

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  • Coating liquid production method, coating production method, coating, organic electroluminsecent element, display device and illumination device
  • Coating liquid production method, coating production method, coating, organic electroluminsecent element, display device and illumination device
  • Coating liquid production method, coating production method, coating, organic electroluminsecent element, display device and illumination device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0421] >

[0422] [Manufacture of Coating Solution (1)]

[0423] In a 100mL beaker, put a stirring bar and n-propyl acetate (compound B1) as a solvent, heat the stirring bar to 80°C under stirring, and add the above-mentioned compound A1-1 and The above compound A1-2 and make it 0.57% by mass and 0.43% by mass, respectively, and then stir the stirring bar to dissolve. After visually confirming that Compound A1-1 and Compound A1-2 were dissolved in n-propyl acetate, stirring was stopped, and the temperature was returned to normal temperature (20° C.) to obtain a coating liquid (1).

[0424] [Manufacture of Coating Solution (2)]

[0425] Ultrasonic waves at 40 Hz were applied to the coating liquid (1) for 30 minutes using an ultrasonic homogenizer (manufactured by Branson Corporation, Sonifier SFX150) to obtain a coating liquid (2).

[0426] [Manufacture of Coating Solution (3)]

[0427] The coating solution (1) was subjected to the following high performance liquid chromato...

Embodiment 2

[0529] >

[0530] In addition, when coating by the inkjet method using the coating liquids (5) to (10), (15) to (20) and (25) to (30) of the present invention, there is no problem in practical use.

[0531] Each coating liquid was filled in the ink chamber of the inkjet head (256 nozzles), and it mounted on the inkjet coating apparatus XY-100 (head KM1024iMHE) manufactured by Konica Minolta. Then, the coating liquid was sprayed continuously for 20 hours (h) under the conditions of 10 μL of ink droplets from each nozzle and a driving frequency of 20 kHz, and it was checked whether there was a nozzle that did not spray.

[0532] As a result of the confirmation, it can be confirmed that there is no nozzle that does not eject.

[0533] Therefore, it was confirmed that the coating liquid obtained by the production method of the present invention can be suitably used for coating by the inkjet method due to its high retentivity.

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Abstract

The present invention addresses the problem of providing: a method for producing a coating liquid which is highly storable and when dried, forms a highly functional coating; a coating production method that uses the coating liquid; a coating formed by drying and solidifying the coating liquid; an organic electroluminescent element provided with the coating as an organic functional layer; and a display device and illumination device provided with the organic electroluminescent element. The production method produces the coating liquid by mixing a solution and a supercritical or subcritical fluid.

Description

technical field [0001] The present invention relates to a method for producing a coating liquid, a method for producing a coating film, a coating film, an organic electroluminescence element, a display device, and an illumination device. More specifically, the present invention relates to a method for producing a coating liquid having high storage stability and a coating film having high functionality when dried to form a coating film, a method for producing a coating film using the coating liquid, a coating Cloth film, organic electroluminescent element, display device and lighting device. Background technique [0002] As for electronic devices using organic compounds, for example, organic electroluminescent diodes (organic electroluminescent diodes (also referred to as "OLEDs" and "organic EL devices"), organic photoelectric conversion devices, and organic transistors have been developed. Electronic devices, along with these technological advancements, are gaining popular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/80B01D15/40B05D1/02B05D1/26B05D1/40B05D7/24C09D5/22C09D7/20C09D7/63C09K11/06H01L51/50H05B33/10
CPCY02P20/54
Inventor 小西敬吏关根昇后藤昌纪
Owner KONICA MINOLTA INC
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