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transparent conductive film

A technology of transparent conductive film and conductivity, applied to conductive materials, conductive materials, conductive layers on insulating carriers, etc., can solve problems such as low transmittance, poor visual confirmation of displays, and poor electrical properties

Inactive Publication Date: 2015-09-09
LINTEC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, although the conductive organic polymer compound can obtain the same electrical properties as ITO, the transmittance of the obtained conductive film cannot be avoided, and it is not practical yet.
[0009] In this way, the conductive organic polymer compound has lower transmittance than ITO when it is desired to obtain the same electrical properties as ITO, and when the transmittance is increased, the electrical properties are worse (electrical properties and transmittance have film thickness dependence. )
When the transmittance is low, there is a concern that the visibility as a display is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] (1) (A) Formation of optical adjustment layer

[0126] 100 parts by mass of polyester resin [manufactured by Toyobo (Co., Ltd.), "Vironal MD1245", solid content concentration 30 mass%, diluted with water], 240 parts by mass of titanium oxide aqueous dispersion [manufactured by Teika (Co., Ltd.), "ND146", average particle diameter 10 nm, solid content concentration 25% by mass] and 566 parts by mass of purified water were uniformly mixed to prepare a coating liquid for forming an optical adjustment layer with a solid content concentration of 1.5% by mass.

[0127] Next, on the surface of a polyethylene terephthalate film [manufactured by Toyobo Co., Ltd., "A4300"] with a thickness of 188 μm, it was coated with a wire bar (Myiya Bar), and dried at 100° C. for 1 day. minutes, an optical adjustment layer with a thickness of 200 nm was formed.

[0128] (2) (B) Formation of conductive organic polymer layer

[0129] Using a wire bar, 100 parts by mass of a polythiophene coat...

Embodiment 2

[0131] (1) (A) Formation of optical adjustment layer

[0132] 100 parts by mass of polyester resin [manufactured by Toyobo Co., Ltd., "Viron 20SS", solid content 30 mass%, diluted with toluene / methyl ethyl ketone], 200 parts by mass of tin oxide toluene dispersion doped with antimony [Ishihara Sangyo Co., Ltd. Co., Ltd.), "SNS-10T", average particle diameter 90nm, solid content 30% by mass] and 270 parts by mass of toluene were uniformly mixed to prepare a coating liquid for forming an optical adjustment layer with a solid content concentration of 3% by mass.

[0133] Next, on the surface of a polyethylene terephthalate film [manufactured by Toyobo Co., Ltd., "A4300"] with a thickness of 188 μm, it was coated with a wire bar and dried at 100° C. for 1 minute to form a film with a thickness of 200 nm. Optical adjustment layer.

[0134] (2) (B) Formation of conductive organic polymer layer

[0135] In the same manner as in Example 1 (2), a conductive organic polymer layer was ...

Embodiment 3

[0137] (1) (A) Formation of optical adjustment layer

[0138] Disperse 100 parts by mass of an ultraviolet curable coating agent [manufactured by Dainichi Seika Co., Ltd., "SEIKAZEM EXF-01L (NS)", solid content 100%], 400 parts by mass of tin oxide doped with antimony in toluene The bulk "SNS-10T" (mentioned above) and 450 parts by mass of toluene were uniformly mixed to prepare a coating liquid for forming an optical adjustment layer having a solid content concentration of 3% by mass.

[0139] Next, on the surface of a polyethylene terephthalate film with a thickness of 188 μm [manufactured by Toyobo Co., Ltd., “A4300”], it was coated with a wire bar, dried at 80° C. for 1 minute, and passed through a high-pressure mercury lamp. Irradiation 500mJ / cm 2 ultraviolet rays to form an optical adjustment layer with a thickness of 200nm.

[0140] (2) (B) Formation of conductive organic polymer layer

[0141] In the same manner as in Example 1 (2), a conductive organic polymer laye...

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Abstract

Disclosed is an electrically-conductive transparent film configured by stacking layers (A) and (B) upon a base film in that order, said film being characterized in that the layer (A) is an optical modulation layer comprising at least one binder resin selected from a thermoplastic resin, a thermosetting resin, and an active energy ray-curable resin and metal oxide particles having an average particle diameter of 200 nm or less, and the layer (B) is an electrically-conducive organic polymer layer. The electrically-conductive transparent film has similar electrical properties and transmittance to ITO, which contains indium (an expensive rare metal), without actually containing ITO, and is suitable as a transparent electrode for a display, particularly an electrode for a touch panel.

Description

technical field [0001] The present invention relates to a transparent conductive film, and more specifically relates to a transparent conductive film that does not use tin-doped indium oxide (ITO) using expensive rare metal indium, but has electrical properties and transmittance equivalent to the ITO, It is suitable as a transparent electrode for a display, etc., and is especially preferable as an electrode for a touch panel. Background technique [0002] At present, as inorganic conductive materials, there are known tin-doped indium oxide (ITO), tin oxide, indium oxide, zinc oxide, aluminum-doped zinc oxide, etc., however, among them, using conductivity and electrical properties Particularly excellent transparent conductive films of ITO are often used as transparent electrodes of liquid crystal displays, transparent touch panels, and the like. [0003] As such a transparent conductive film, it is known to install it on the surface of a transparent film such as a polyethyle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/18B32B7/02H01B1/12H01B5/14
CPCH01B1/20H01B1/128H01B1/127B32B7/02B32B27/18H01B1/12H01B5/14
Inventor 小野泽豊仓田雄一
Owner LINTEC CORP