Transfer film, method for producing transfer film, transparent laminate, method for producing transparent laminate, capacitance-type input device, and image display device

Patent metadata

Field	Value
Publication number	US-2016357290-A1
Application number	US-201615239904-A
Country	US
Kind code	A1
Filing date	Aug 18, 2016
Priority date	Feb 19, 2014
Publication date	Dec 8, 2016
Grant date	—

Abstract

Provided are a transfer film having a temporary support, a first curable transparent resin layer disposed adjacently to the temporary support to be in direct contact therewith, and a second curable transparent resin layer disposed adjacently to the first curable transparent resin layer to be in direct contact therewith, in this order, in which the refractive index of the second curable transparent resin layer is higher than the refractive index of the first curable transparent resin layer, and the second curable transparent resin layer contains metal oxide particles at a proportion of 28.1% by mass to 95% by mass relative to the total solid content of the second curable transparent resin layer, the transfer film being capable of forming a transparent laminate that is free of the problem that a transparent electrode pattern is visually recognized; a method for producing a transfer film; a method for producing a transparent laminate; a transparent laminate; a capacitance-type input device; and an image display device.

First claim

What is claimed is:

1 . A transfer film comprising:
a temporary support; a first curable transparent resin layer disposed adjacently to the temporary support to be in direct contact therewith; and a second curable transparent resin layer disposed adjacently to the first curable transparent resin layer to be in direct contact therewith, in this order, wherein the refractive index of the second curable transparent resin layer is higher than the refractive index of the first curable transparent resin layer, and the second curable transparent resin layer contains metal oxide particles at a proportion of 28.1% by mass to 95% by mass relative to the total solid content of the second curable transparent resin layer.

2 . A transfer film comprising:
a temporary support; a first curable transparent resin layer disposed adjacently to the temporary support to be in direct contact therewith; and a second curable transparent resin layer disposed adjacently to the first curable transparent resin layer to be in direct contact therewith, in this order, wherein the first curable transparent resin layer contains metal oxide particles at a proportion of 0% by mass to 10% by mass relative to the total solid content of the first curable transparent resin layer, and the second curable transparent resin layer contains metal oxide particles at a proportion of 28.1% by mass to 95% by mass relative to the total solid content of the second curable transparent resin layer.

3 . The transfer film according to claim 1 , wherein the first curable transparent resin layer has a refractive index of 1.5 to 1.53.

4 . The transfer film according to claim 1 , wherein the second curable transparent resin layer has a refractive index of 1.6 or higher.

5 . The transfer film according to claim 1 , wherein the second curable transparent resin layer has a refractive index of 1.65 or higher.

6 . The transfer film according to claim 1 , wherein the second curable transparent resin layer has a film thickness of 500 nm or less.

7 . The transfer film according to claim 1 , wherein the second curable transparent resin layer has a film thickness of 110 nm or less.

8 . The transfer film according to claim 1 , wherein the first curable transparent resin layer has a film thickness of 1 μm or more.

9 . The transfer film according to claim 1 , wherein the first curable transparent resin layer includes a polymerizable compound and a photopolymerization initiator.

10 . The transfer film according to claim 1 , wherein the double bond consumption rate of the first curable transparent resin layer is 10% or more.

11 . The transfer film according to claim 1 , wherein the second curable transparent resin layer contains metal oxide particles having a refractive index of 1.55 or higher as the metal oxide particles.

12 . The transfer film according to claim 1 , wherein the metal oxide particles have a refractive index of 1.9 or higher.

13 . The transfer film according to claim 1 , wherein the metal oxide particles are formed from any one kind or two or more kinds selected from titanium oxide, titanium composite oxide, zinc oxide, zirconium oxide, indium/tin oxide, and antimony/tin oxide.

14 . The transfer film according to claim 1 , wherein the metal oxide particles are formed from zirconium oxide, and the second curable transparent resin layer contains the metal oxide particles at a proportion of 40% by mass to 95% by mass relative to the total solid content of the second curable transparent resin layer.

15 . The transfer film according to claim 1 , wherein the metal oxide particles are formed from titanium oxide, and the second curable transparent resin layer contains the metal oxide particles at a proportion of 30% by mass to 70% by mass relative to the total solid content of the second curable transparent resin layer.

16 . The transfer film according to claim 1 , wherein the second curable transparent resin layer includes a polymerizable compound.

17 . The transfer film according to claim 1 wherein the first curable transparent resin layer and the second curable transparent resin layer are both thermosetting resin layers.

18 . The transfer film according to claim 1 , wherein the first curable transparent resin layer and the second curable transparent resin layer each contain an acrylic resin.

19 . A method for producing a transfer film, the method comprising:
(b) forming, on a temporary support, a first curable transparent resin layer including a polymerizable compound and a photopolymerization initiator such that the temporary support and the first curable transparent resin layer are brought into direct contact with each other; (c) curing the first curable transparent resin layer by exposure to light; and (d) forming a second thermosetting transparent resin layer directly on the first curable transparent resin layer after curing, wherein the refractive index of the second curable transparent resin layer is higher than the refractive index of the first curable transparent resin layer, and the second curable transparent resin layer contains metal oxide particles at a proportion of 28.1% by mass to 95% by mass relative to the total solid content of the second curable transparent resin layer.

20 . A method for producing a transfer film, the method comprising:
(b) forming, on a temporary support, a first curable transparent resin layer including a polymerizable compound and a photopolymerization initiator such that the temporary support and the first curable transparent resin layer are brought into direct contact with each other; (c) curing the first curable transparent resin layer by exposure to light; and (d) forming a second thermosetting transparent resin layer directly on the first curable transparent resin layer after curing, wherein the first curable transparent resin layer contains metal oxide particles at a proportion of 0% by mass to 10% by mass relative to the total solid content of the first curable transparent resin layer, and the second curable transparent resin layer contains metal oxide particles at a proportion of 28.1% by mass to 95% by mass relative to the total solid content of the second curable transparent resin layer.

21 . A method for producing a transparent laminate, the method comprising laminating, on a transparent electrode pattern, the second curable transparent resin layer and the first curable transparent resin layer of the transfer film according to claim 1 in this order.

22 . The method for producing a transparent laminate according to claim 21 , wherein the method further comprises removing the temporary support.

23 . The method for producing a transparent laminate according to claim 21 , wherein the transparent electrode pattern is a transparent electrode pattern formed on a transparent film substrate.

24 . A transparent laminate manufactured by the method for producing a transparent laminate according to claim 21 .

25 . A transparent laminate comprising:
a transparent electrode pattern; a second curable transparent resin layer disposed adjacently to the transparent electrode pattern; and a first curable transparent resin layer disposed adjacently to the second curable transparent resin layer, wherein the refractive index of the second curable transparent resin layer is higher than the refractive index of the first curable transparent resin layer, and the second curable tran

Assignees

• Fujifilm Corp

Inventors

• Kanna Shinichi

Classifications

• B32B2307/412

  Transparent · CPC title

• B32B2264/102

  Oxide or hydroxide · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title

• B32B2307/202

  Conductive · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title