Flexible transparent conductive film and flexible functional element using the same

A technology of transparent conductive film and transparent conductive layer, applied in electrical components, conductive materials dispersed in non-conductive inorganic materials, electric solid devices, etc., can solve the problem of poor conductivity stability, vulnerability to environmental changes, degradation of transparent conductive layer, etc. problem, to achieve the effect of excellent flexibility

Inactive Publication Date: 2010-09-22
SUMITOMO METAL MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the transparent conductive layer obtained by the coating method also has the problems of deterioration over time, easy to be affected by environmental changes, etc., and poor conductivity stability.

Method used

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  • Flexible transparent conductive film and flexible functional element using the same
  • Flexible transparent conductive film and flexible functional element using the same
  • Flexible transparent conductive film and flexible functional element using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] 36 g of granular ITO microparticles (trade name: SUFP-HX, manufactured by Sumitomo Metal Mining Co., Ltd.) with an average particle diameter of 0.03 μm were mixed with 24 g of methyl isobutyl ketone (MIBK) and 36 g of cyclohexanone as solvents to perform dispersion treatment. Then, add 3.8 g of urethane acrylate UV-curable resin adhesive containing hydroxyl group, 0.2 g of photoinitiator (Daroquia-1173), and a small amount of silane coupling agent, stir well, and obtain a dispersant with an average dispersed particle diameter of 125 nm. A coating solution (liquid A) for forming a transparent conductive layer of ITO microparticles. In addition, the weight ratio of conductive oxide fine particles (ITO fine particles):binder component (resin binder+photopolymerization initiator) was 90:10.

[0117] A low heat-shrinkable PET film (thickness: about 100 μm, transmittance = 89.8%, haze value = 1.9%) is subjected to corona discharge treatment as a base film, and then amorphous ...

Embodiment 2

[0132] 40 g of the same ITO microparticles as in Example 1 were mixed with 40 g of isophorone as a solvent, a small amount of dispersant was added, and dispersion treatment was performed using a paint shaker to obtain an ITO microparticle dispersion. To 40 g of this ITO microparticle dispersion liquid, add a crosslinkable acrylic polyol resin binder containing a hydroxyl group (glass transition temperature (Tg) of the resin before crosslinking: 102° C., a hydroxyl value of 29 KOHmg / g) 4.48 g resin solution dissolved in 17.14 g of isophorone, HDI-based blocked isocyanate as a curing agent (MF-K60X, solid content [curing agent component] about 60%, minimum curing temperature 90°C, NCO: 6.5 wt%, Asahi Kasei Co., Ltd.) 0.88 g and a trace amount of silane coupling agent were stirred well to obtain a transparent conductive layer-forming coating solution (B solution) in which ITO fine particles with an average dispersed particle diameter of 120 nm were dispersed. In addition, the wei...

Embodiment 3

[0139] Adopt granular ITO microparticles with an average particle diameter of 0.04 μm (trade name: FS-21, manufactured by Dowa Mining Co., Ltd.) to replace the ITO microparticles of Example 1, add isophorone and a small amount of dispersant, and carry out dispersion treatment to obtain ITO microparticles. Except for the dispersion liquid, it carried out similarly to Example 2, and obtained the coating liquid (C liquid) for transparent conductive layer formation which disperse|distributed the ITO microparticles|fine-particles of average dispersion particle diameter of 135 nm. In addition, the weight ratio of conductive oxide fine particles (ITO fine particles): binder component (resin binder + curing agent) was 80:20, and the molar ratio of NCO (isocyanate group) / OH (hydroxyl group) was 0.59.

[0140] Except for using the above-mentioned transparent conductive layer forming coating solution (C liquid) instead of B liquid, the same operation was carried out as in Example 2 to obt...

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Abstract

A flexible transparent conductive film on which a first transparent conductive layer (2a) formed by chemical vapor deposition and a second transparent conductive layer (3a) formed by coating are provided on a base film (1) in order of mention or in the reverse order. The major component of the first transparent conductive layer (2a)is a conductive oxide, and the major components of the second transparent conductive layer (3a) are conductive oxide particles and a binder matrix. The first transparent conductive layer (2a) and the second transparent conductive layer (3a) are in close contact with each other, thereby hardly causing cracks in the first transparent conductive layer (2a), and minimizing the deterioration of conductivity even if a crack occurs. With this, the flexible transparent conductive film and a flexible functional device using this having transparency, conductivity, and conductivity stability equivalent to conventional sputtering ITO films and excellent in flexibility are provided.

Description

technical field [0001] The invention relates to a transparent conductive film with a transparent conductive layer formed on a base film, in particular to a transparent conductive film used in flexible functional components such as liquid crystal display elements, organic electroluminescent elements, electronic paper elements, solar cells, and touch screens. The transparent conductive film used. Background technique [0002] In recent years, in electronic devices such as various displays and mobile phones represented by liquid crystal display elements, the development of thinner, thinner and smaller is being accelerated. Following this, research on replacing the glass substrates used in the past with plastic films is being carried out. In full swing. Plastic film is both light and flexible. Therefore, if a thin plastic film with a thickness of several microns can be made into a base film, a transparent conductive layer can be formed on the base film to form a transparent con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14B32B7/02B32B9/00H01L51/50H05B33/14H05B33/26H01B13/00
CPCH01L51/0097H01B1/20H01L51/50H01B1/08Y10T428/266Y10T428/31993C09K2323/04H10K59/12H10K77/111H10K50/00
Inventor 行延雅也村山勇树井崎浩年
Owner SUMITOMO METAL MINING CO LTD
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