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Transparent conductive film and image display device

A technology of transparent conductivity and transparent conductive layer, applied in conductive layers on insulating carriers, equipment for manufacturing conductive/semi-conductive layers, electrical digital data processing, etc. Light transmittance, good electromagnetic wave shielding effect, and the effect of inhibiting identification

Active Publication Date: 2021-12-21
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In particular, Non-Patent Document 1 describes that in order to reduce the resistance value of the ITO film, it is necessary to increase the thickness of the ITO film, and as a result, the light transmittance decreases.

Method used

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  • Transparent conductive film and image display device
  • Transparent conductive film and image display device
  • Transparent conductive film and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0033] One embodiment of the transparent conductive film of the present invention will be described below with reference to the drawings. figure 1 Among them, the upper and lower directions on the paper are the up and down directions (thickness direction, first direction), the upper side on the paper is the upper side (one side in the thickness direction, the first direction side), and the lower side on the paper is the lower side (the other side in the thickness direction). side, the other side in the first direction). In addition, the left-right direction of the paper is the left-right direction (the second direction, the direction perpendicular to the first direction), the left side of the paper is the left side (the second direction side), and the right side of the paper is the right side (the second direction). 2 direction to the other side). In addition, the thickness direction of the paper is the depth direction (the third direction, the direction perpendicular to the...

Embodiment 1

[0177] A hard coat composition (acrylic ultraviolet curable resin, manufactured by DIC Corporation, manufactured by DIC Corporation, "UNIDIC RS29-120") was dried by heating at 80°C for 1 minute. Thereafter, ultraviolet rays were irradiated using a high-pressure mercury lamp to form first and second hard coat layers (each having a thickness of 1.0 μm and each having a refractive index of 1.53). Thereby, the laminated body of a 1st hard-coat layer, a transparent base material, and a 2nd hard-coat layer was obtained.

[0178] Next, a diluent of the optical adjustment composition having a refractive index of 1.70 was applied to the surface of the first hard coat layer of the laminate with a gravure coater, and heat-dried at 60° C. for 1 minute. Thereafter, ultraviolet rays were irradiated using a high-pressure mercury lamp to form a first optical adjustment layer (refractive index: 1.70, thickness: 80 nm). Moreover, except having used the optical adjustment composition with a re...

Embodiment 2～9 and comparative example 1～5

[0184] In addition to changing the thickness and refractive index of the optical adjustment layer, and the thickness and surface resistance of the transparent conductive layer to the thickness and refractive index of the optical adjustment layer and the thickness and surface resistance of the transparent conductive layer described in Table 1, , A transparent conductive film was produced by the same method as in Example 1.

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Abstract

The transparent conductive film includes a first transparent conductive layer, a first optical adjustment layer, a transparent substrate, a second optical adjustment layer, and a second transparent conductive layer in this order. The surface resistance value of the second transparent conductive layer is larger than the surface resistance value of the first transparent conductive layer, the surface resistance value of the first transparent conductive layer is not less than 10Ω / □ and not more than 70Ω / □, and the surface resistance value of the second transparent conductive layer is 50Ω / □ to 150Ω / □, the refractive index of the second optical adjustment layer is lower than the refractive index of the first optical adjustment layer.

Description

technical field [0001] The present invention relates to a transparent conductive film and an image display device including the same. Background technique [0002] Conventionally, it is known that an image display device including a touch panel and an image display element includes a film for a touch panel in which a transparent conductive layer including indium tin composite oxide (ITO) is formed on a transparent base material. As such a film for a touch panel, a double-sided transparent conductive film in which ITO layers are arranged on both surfaces of a transparent substrate is described in, for example, Patent Document 1. [0003] However, since an image display element such as a liquid crystal cell generates electromagnetic waves, an electromagnetic wave shielding effect for shielding electromagnetic waves is desired for an image display device. Furthermore, for a resistive touch panel, it is known that an ITO structure in which two ITO films are opposed to each othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B33/00B32B7/12G06F3/041G06F3/044H01B5/14
CPCB32B7/02G06F3/041H01B5/14G06F3/0446B32B27/08C08J7/044H01B13/0026G06F3/044
Inventor 梅本徹西岛仁志桥本尚树鹰尾宽行
Owner NITTO DENKO CORP
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