Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Charge-transporting varnish

A technology of charge transport and varnish, which is applied in the direction of circuits, conductive coatings, electrical components, etc., can solve the problems of leakage current circuit, uneven light emission of organic EL components, and the order of organic functional layers to perform functions, etc., to achieve excellent flatness, Excellent charge transport properties

Active Publication Date: 2022-02-01
NISSAN CHEM IND LTD
View PDF43 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If such a climbing phenomenon occurs, a plurality of organic functional layers formed between the electrodes cannot function according to their lamination order, and a leakage current path may be formed.
As a result, the desired device characteristics cannot be achieved
In addition, the organic functional layer such as the hole injection layer that climbs may cause unevenness in the light emission of the obtained organic EL element.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Charge-transporting varnish
  • Charge-transporting varnish
  • Charge-transporting varnish

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0301] The method for producing the charge-transporting varnish is not particularly limited, and examples thereof include a method of adding a charge-transporting organic compound, a dopant, and, if necessary, other components to an organic solvent in an arbitrary order or simultaneously. In addition, in the case of a plurality of organic solvents, first, each component may be dissolved in one solvent sequentially or simultaneously, and another solvent may be added thereto, or each component may be sequentially dissolved in a mixed solvent of a plurality of organic solvents. or dissolve simultaneously.

[0302] In the charge-transporting varnish of the present invention, it is preferable to dissolve each component in an organic solvent and then filter using a submicron order filter or the like from the viewpoint of reproducibly obtaining a thin film with higher flatness.

[0303] The viscosity of the charge-transporting varnish of the present invention is usually 1 to 50 mPa·s...

Embodiment

[0346] Hereinafter, the present invention will be described more concretely with reference to synthesis examples, production examples, examples, and comparative examples, but the present invention is not limited to the following examples.

[0347] The apparatus used is described below.

[0348] (1) MALDI-TOF-MS: autoflex III smartbeam manufactured by Bruker

[0349] (2) 1 H-NMR: JNM-ECP300 FT NMR SYSTEM manufactured by JEOL Ltd.

[0350] (3) Substrate cleaning: Substrate cleaning equipment manufactured by Choshu Sangyo Co., Ltd. (decompression plasma method)

[0351] (4) Coating of varnish: spin coater MS-A100 manufactured by MIKASA Co., Ltd.

[0352] (5) Film thickness measurement and surface shape measurement: Micro shape measuring machine SURFCORDERET-4000A manufactured by Kosaka Laboratory

[0353] (6) Manufacture of components: Multifunctional vapor deposition system C-E2L1G1-N manufactured by Choshu Sangyo Co., Ltd.

[0354] (7) Measurement of the current density of...

Synthetic example 1-1

[0374] Dissolve MMA (10.0g), HEMA (12.5g), CHMI (20.0g), HPMA (2.50g), MAA (5.00g) and AIBN (3.20g) in PGME (79.8g), pass through The reaction was carried out for 20 hours to obtain an acrylic polymer P1 solution (solid content concentration: 40% by mass). The Mn of the acrylic polymer P1 was 3,700, and the Mw was 6,100.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Concentrationaaaaaaaaaa
Login to View More

Abstract

Provided is a charge-transporting varnish that includes a monodisperse charge-transporting organic compound (A), a dopant (B), and an organic solvent (C). The dopant (B) includes: an aryl sulfonic acid ester compound (B1); and halogenated tetracyanoquinodimethane (B2) or halogenated or cyanated benzoquinone (B3).

Description

technical field [0001] The present invention relates to charge-transporting varnishes. Background technique [0002] Formation methods of organic functional layers such as hole injection layers used in organic electroluminescence (EL) devices are broadly classified into dry methods represented by evaporation methods and wet methods represented by spin coating methods. When these methods are compared, the wet method can efficiently produce a thin film with high flatness over a large area. Therefore, a hole injection layer that can be formed by a wet method is desired at the present time when the area of ​​the organic EL display is increasing. In view of such actual conditions, the present applicant has developed a charge-transporting material that can be applied to various wet processes and can form a thin film capable of realizing excellent EL element characteristics when applied to a hole injection layer of an organic EL element. , A compound having good solubility in an ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D5/24H01L51/50H01L51/54
CPCC09D5/24H10K50/15H10K50/17H10K85/113H10K85/631
Inventor 东将之
Owner NISSAN CHEM IND LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com