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Hard coat film, transparent conductive laminate, and touch panel

A technology of transparent conductivity and transparent conductive layer, which is applied to conductive layers on insulating carriers, coatings, devices for coating liquids on surfaces, etc. Hard coating thickness and other problems, to achieve the effect of improving hardness and preventing curling

Inactive Publication Date: 2015-12-23
KEIWA INCORPORATED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the hard coat film of Patent Document 1, since the thickness of the first hard coat layer and the second hard coat layer are substantially the same, the first hard coat layer is thin, and the surface of the hard coat film cannot obtain sufficient hardness.
In addition, if the thickness of the hard coat layer is increased in order to obtain sufficient hardness, the second hard coat layer becomes too thick, and there is a problem that the hard coat film curls.
[0008] In addition, in the hard coat film of Patent Document 2, although the thickness of the second hard coat layer is thinner than the thickness of the first hard coat layer, the thickness of the second hard coat layer is about 100% of the thickness of the first hard coat layer. More than half, therefore, as a result, the surface of the hard coat film cannot obtain sufficient hardness, and in addition, curling cannot be reliably prevented

Method used

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  • Hard coat film, transparent conductive laminate, and touch panel
  • Hard coat film, transparent conductive laminate, and touch panel
  • Hard coat film, transparent conductive laminate, and touch panel

Examples

Experimental program
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Effect test

no. 1 approach

[0059] Embodiments of the present invention will be described in detail below with reference to appropriate drawings.

[0060] figure 1 The hard coat film 1 includes a base material layer 2, a front-side hard coat layer 3, and a back-side hard coat layer 4 (corresponding to a third hard coat layer). In addition, when the hard coat film 1 is adhered to other members, the backside hard coat layer 4 is arranged on the side of the adhesive surface, and the front side hard coat layer 3 is arranged on the opposite side of the adhesive surface.

[0061] Substrate layer 2

[0062] The substrate layer 2 is transparent, especially colorless and transparent, because it needs to be able to transmit light. The main components constituting the substrate layer 2 are not particularly limited, but are typically selected from polycarbonate resins, cycloolefin resins, acrylic resins, polypropylene resins, and polyethylene terephthalates. Group of resins. These synthetic resins have excellent...

no. 2 approach

[0149] Hard Coat Film 11

[0150] figure 2 The hard coat film 11 includes a base material layer 2 , a front-side hard coat layer 3 , and a back-side hard coat layer 12 (corresponding to a third hard coat layer). The substrate layer 2 and the surface-side hard coat layer 3 in this embodiment are figure 1 The substrate layer 2 of the hard coat film 1 and the surface side hard coat layer 3 are the same, and therefore the same reference numerals are assigned to them, and their descriptions are omitted.

[0151] Back side hard coat 12

[0152] The back-side hard coat layer 12 is formed on the other surface of the base material layer 2 . The main component (binder) constituting the backside hard coat layer 12, the additives contained in the backside hard coat layer 12, the pencil hardness and thickness of the backside hard coat layer 12 are all the same as those of the backside hard coat layer 4 .

[0153] High-refractive-index fine particles are dispersed in the back-side har...

no. 3 approach

[0160] Transparent conductive laminated body 21

[0161] image 3 The transparent conductive laminated body 21 includes the hard coat film 11 and the transparent conductive layer 22 . The hard coat film 11 in this embodiment is due to the figure 2 The hard coat film 11 is the same, so the same reference numerals are assigned to them, and their descriptions are omitted.

[0162] transparent conductive layer 22

[0163] The transparent conductive layer 22 is laminated on the other surface of the back-side hard coat layer 12 . The material for forming the transparent conductive layer 22 is not particularly limited as long as it is a conductive material having transparency and conductivity, and examples thereof include inorganic metals and organic conductive polymers. Examples of inorganic metals include gold, silver, copper, platinum, nickel, tin oxide, indium tin oxide (ITO), and the like. Examples of organic conductive polymers include organic conductive compositions usin...

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Abstract

The purpose of the invention is to provide a hard coat film, a transparent conductive laminate and a touch panel having excellent hardness and capable of effectively preventing crimping. The transparent conductive laminate comprises the hard coat film and the touch panel comprises the transparent conductive laminate. The hard coat film provided by the invention comprises a transparent substrate layer, a first hard coating layer and a second hard coating layer and a third hard coating layer. Pencil hardness of the first hard coating layer is lower than that of the second hard coating layer. The pencil hardness of the second hard coating layer is more than 3H. Thickness of the first hard coating layer is 4 times-20 times of the thickness of the second hard coating layer. The thickness of the second hard coating layer is 1 mum-10 mum. The thickness of the third hard coating layer is 50 nm-10 mum.

Description

technical field [0001] The present invention relates to a hard coat film, a transparent conductive laminate including the hard coat film, and a touch panel including the transparent conductive laminate. Background technique [0002] Liquid crystal display modules (LCD) have the characteristics of thinness, light weight, and low power consumption. Most of the liquid crystal display modules are used as flat panel displays by utilizing these characteristics, and this use is expanding year by year. It can be used as mobile phones, personal digital assistants (PDA), Display devices for information such as personal computers and televisions. In recent years, liquid crystal display modules have been required to have various properties depending on the application. The properties required for liquid crystal display modules include brightness (higher luminance), ease of viewing (wider viewing angle), and energy saving. , Thin and lightweight and large screen etc. [0003] In order ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/18B32B7/02G02B1/10G02B1/14G06F3/041
CPCB05D5/00B32B27/14G06F3/041H01B5/14
Inventor 赤松正远藤大士
Owner KEIWA INCORPORATED
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