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Transparent conductive laminate and transparent touch panel

A technology of transparent conductivity and transparent conductive layer, which is applied to conductive layers on insulating carriers, electronic equipment, layered products, etc., can solve the deterioration of electrical characteristics of touch panels, damage to the transparent conductive layer of movable electrode substrates, and hinder movable Electrode substrate conduction and other problems

Active Publication Date: 2012-05-02
TEIJIN LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] When using a patterned transparent conductive layer in a transparent touch panel like these transparent touch panels compatible with multi-point detection, there is a problem that the transmittance of light is displayed between the part with the transparent conductive layer and the part without the transparent conductive layer. , and the color tone is different, so that the pattern of the transparent conductive layer can be seen and the display light is difficult to see (hereinafter referred to as "见骨 (骨见え)")
The scattered particles may hinder the conduction between the movable electrode substrate and the fixed electrode substrate, deteriorating the electrical characteristics of the touch panel.
In addition, these scattered particles sometimes damage the transparent conductive layer of the movable electrode substrate and the fixed electrode substrate, deteriorating the electrical characteristics of the touch panel.

Method used

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  • Transparent conductive laminate and transparent touch panel
  • Transparent conductive laminate and transparent touch panel
  • Transparent conductive laminate and transparent touch panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0273] Hereinafter, reference examples are given and the present invention will be described in more detail, but the present invention is not limited by the reference examples. It should be noted that, in the reference examples, unless otherwise specified, "parts" and "%" are all mass standards. In addition, various measurements in Reference Examples were performed as follows.

[0274]

[0275] The measurement was performed using a probe-type height difference meter DEKTAK3 manufactured by Sloan Company. Measurement was performed in accordance with JISB0601-1994 edition.

[0276]

[0277] Using an atomic force microscope SPA400 manufactured by SII Nano Technology Co., Ltd., in the dynamic force mode, a scanner with a measurement range of 150 μm was used, and a Si cantilever with Al on its back (SI-DF40 manufactured by SII Nano Technology Co., Ltd.) was used as the cantilever to scan the range 50×50 μm for measurement. The number of data was measured with 512 p...

Embodiment A1

[0301] A polycarbonate film (manufactured by Teijin Chemicals Co., Ltd., C110-100, "PC" in the table) was used as a transparent organic polymer substrate, and the following coating solution H1 was coated on one surface with a Mayer bar , after drying at 60°C for 30 seconds, irradiate with a high-pressure mercury lamp with an intensity of 160W and a cumulative light intensity of 700mJ / cm 2 UV rays form a hard coat layer (H1 layer) with a film thickness of about 3 μm.

[0302] (Coating solution H1)

[0303] A coating solution prepared as follows: 59 parts by mass of p-bisphenoxyethanol fluorene diacrylate (manufactured by Osaka Gas Co., Ltd.) using 1-methoxy-2-propanol as a diluting solvent, urethane acrylate (Shin Nakamura Chemical Co., Ltd.) 41 parts by mass of Irgacure 184 (manufactured by Ciba Geigy) was added as a photoinitiator and stirred until uniform.

[0304] Next, on the formed hard coat layer, the following coating liquid R1 was coated with a Mayer bar, an...

Embodiment A2

[0311] Using a polyester film ("TEIJIN TETORON FILM", OFW-188 manufactured by DuPont Teijin Films Co., Ltd.) as a transparent organic polymer substrate, the coating liquid H2 was applied on one surface with a Meyer bar, and dried at 60°C After 30 seconds, use a high-pressure mercury lamp with an intensity of 160W to irradiate a cumulative light amount of 700mJ / cm 2 UV rays form a hard coat layer (H2 layer) with a film thickness of about 3 μm.

[0312] (Coating solution H2)

[0313] The prepared coating solution was used: 85 parts by mass of bisphenoxyethanol fluorene diacrylate (manufactured by Osaka Gas Co., Ltd.), urethane acrylate (trade name "NK oligo U-15HA, manufactured by Shin Nakamura Chemical Co., Ltd.) using toluene as a diluting solvent. ") 15 parts by mass to dilute, and then add 3 parts by mass of Irgacure184 (manufactured by Ciba Geigy Co.) as a photoinitiator and stir until uniform.

[0314] Next, on the formed H2 layer, a cured resin layer having a f...

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Abstract

Disclosed are a transparent conducive laminate suitable for use in combination with a display element such as a liquid crystal display and a transparent touch panel comprising such a transparent conductive laminate. The transparent conductive laminate is fabricated by laminating in order of a hardcoat (HC) layer (33h), an optical interference layer (32), and a transparent conductive layer (31) on at least one surface of a transparent organic-polymer substrate (33) and satisfies the following conditions: the indices of refraction n3, n3h of the transparent organic-polymer substrate and the HC layer satisfy the following expression |n3-n3h|=0.02; the thickness of the HC layer is l [mu]m or more and l0 [mu]m or less; the thickness of the optical interference layer ranges from 5 nm to 500 nm; the thickness of the transparent conductive layer is 5 nm or more and 200 nm or less; the total light transmittance is 85% or more; and the b* value is -1.0 or more and less than 1.5. The transparent touch panel comprises such a transparent conductive laminate.

Description

technical field [0001] The present invention relates to a transparent conductive laminate used for an electrode substrate of a transparent touch panel. Moreover, this invention relates to the transparent touch panel which has such a transparent electroconductive laminated body. Background technique [0002] A transparent touch panel that implements a conversational input method as one of man machine interfaces has been widely used. The transparent touch panel includes an optical method, an ultrasonic method, a capacitive method, a resistive film method, etc. according to a position detection method. [0003] These transparent touch panels use a transparent conductive laminate in which a transparent conductive layer and the like are laminated on at least one surface of a transparent organic polymer substrate. [0004] Among them, as transparent organic polymer substrates, cellulose-based films such as triacetyl cellulose (TAC), polyester-based films such as polyethylene ter...

Claims

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Application Information

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IPC IPC(8): B32B7/02B32B27/00G06F3/041H01B5/14
CPCG06F3/045G06F3/044G06F3/0443Y10T428/24355Y10T428/24802Y10T428/24893Y10T428/24909B32B33/00B32B2457/208G06F3/041G06F2203/04103
Inventor 伊藤晴彦池田幸纪
Owner TEIJIN LTD