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Conductive polymer dispersion liquid, conductive substrate and manufacturing method thereof

A technology of conductive polymers and conductive substrates, which is applied in the direction of conductive coatings, coatings, fireproof coatings, etc., and can solve problems such as poor display, adverse effects of detection of electrostatic capacitance changes on touch panels, etc.

Active Publication Date: 2021-03-12
SHIN-ETSU POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the conductive layer in the conductive substrate, if the conductivity is too low, display defects caused by charging of liquid crystal molecules may occur.
On the other hand, if the conductivity of the conductive layer is too high, it may adversely affect the detection of capacitance changes of the touch panel.

Method used

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  • Conductive polymer dispersion liquid, conductive substrate and manufacturing method thereof
  • Conductive polymer dispersion liquid, conductive substrate and manufacturing method thereof
  • Conductive polymer dispersion liquid, conductive substrate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0156] 206 g of sodium styrene sulfonate was dissolved in 1000 ml of ion-exchanged water, and while stirring at 80° C., 1.14 g of ammonium persulfate oxidizing agent solution previously dissolved in 10 ml of water was added dropwise over 20 minutes, and the solution was stirred for 12 hours.

[0157] 1,000 ml of sulfuric acid diluted to 10% by mass was added to the obtained solution containing sodium styrene sulfonate, and 1,000 ml of the solution containing polystyrene sulfonic acid was removed by ultrafiltration, and 2,000 ml of ion-exchanged water was added to the raffinate. About 2000ml of the solution was removed by filtration. The above-mentioned ultrafiltration operation was repeated 3 times. About 2000 ml of ion-exchanged water was added to the obtained polystyrenesulfonic acid solution, and about 2000 ml of the solution was removed by ultrafiltration. This ultrafiltration operation was repeated 3 times.

[0158] Water in the resulting solution was removed under redu...

manufacture example 2

[0160] 14.2 g of 3,4-ethylenedioxythiophene and a solution obtained by dissolving 36.7 g of polystyrenesulfonic acid obtained in Production Example 1 in 2000 ml of ion-exchanged water were mixed at 20°C. While stirring the thus obtained mixed solution at 20°C, an oxidation catalyst solution of 29.64 g of ammonium persulfate and 8.0 g of iron sulfate dissolved in 200 ml of ion-exchanged water was slowly added, stirred for 3 hours, and allowed to react .

[0161] 2000 ml of ion-exchanged water was added to the obtained reaction liquid, and about 2000 ml of the solution was removed by ultrafiltration. This operation was repeated 3 times. Next, 200 ml of sulfuric acid diluted to 10% by mass and 2000 ml of ion-exchanged water were added to the obtained solution, about 2000 ml of the solution was removed by ultrafiltration, 2000 ml of ion-exchanged water was added thereto, and about 2000 ml was removed by ultrafiltration The solution. This operation was repeated 3 times.

[0162...

Embodiment 1

[0164] In 2.54 g of the PEDOT-PSS aqueous dispersion obtained in Production Example 2 (the amount of PEDOT-PSS is 0.03048 g), 2.54 g of water, 22.1 g of methanol, 2.73 g of propylene glycol monomethyl ether, 0.025 g of methyl gallate and Silicate (manufactured by Mitsubishi Chemical Corporation, MKC Silicate MS51, the silicate represented by the above chemical formula (I), a mixture of 4 to 6 silicon atoms, SiO 2 The content of the unit is 52 ± 1%, labeled "MS51" in the table. ) 0.7 g to obtain a conductive polymer dispersion.

[0165] The obtained conductive polymer dispersion was applied to an alkali-free glass substrate using a No. 8 bar coater to form a coating film. This coating film was heated and dried at a drying temperature of 110° C. and a drying time of 10 minutes to form a conductive layer and obtain a conductive substrate.

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Abstract

The conductive polymer dispersion liquid of the present invention contains a conductive composite, a silicate having two or more silicon atoms, an aromatic compound, and an organic solvent, and the conductive composite includes a π-conjugated conductive polymer and a polymer. Anion, the above-mentioned aromatic compound is selected from compounds in which two or more hydrogen atoms of the aromatic ring are replaced by hydroxyl groups, compounds in which two or more hydrogen atoms in the aromatic ring are replaced by carbonyl groups, and one or more hydrogen atoms in the aromatic ring One or more compounds among compounds substituted with a hydroxyl group and one or more hydrogen atoms substituted with a carbonyl group.

Description

technical field [0001] The present invention relates to a conductive polymer dispersion containing a π-conjugated conductive polymer, a conductive substrate, and a method for producing the same. Background technique [0002] In recent years, capacitive touch panels have been widely used as input devices in portable electronic devices such as tablet computers, smart phones, and portable game consoles. [0003] Portable electronic devices are often required to be thinner in terms of ease of transportation, and in order to meet this requirement, an in-cell capacitive touch panel is sometimes used as an input device. [0004] An in-cell capacitive touch panel is a touch panel in which a capacitive touch panel is assembled inside a display, and the electrodes of the display and the touch panel are shared to reduce thickness (for example, Patent Document 1). [0005] The in-cell capacitive touch panel includes a conductive substrate on which a conductive layer is formed on the su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/24C09D125/18C09D165/00C09D7/61C09D7/63C03C17/00
CPCC03C17/007C08L2201/08C09D5/18C09D5/24C09D125/18C08L65/00C08K3/36C08K5/5415C08K5/1345C08K5/13
Inventor 松林总
Owner SHIN-ETSU POLYMER CO LTD
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