Transparent conductive sheet

Claim 2

The transparent conductive sheet according to claim 1, wherein said organic resin layer on said metal oxide layer is a cured layer of a resin composition comprising a mixture of a first radiation curing resin and a hydrolysate of an alkoxysilane represented by the following general formula (1) and/or (2) R 1 -Si(OR 2 ) 3 (1) Si(OR 2 ) 4 (2) wherein R 1 is methyl or ethyl or a group containing a vinyl, acryloyl, methacryloyl, amino or epoxy group, and R 2 is methyl or ethyl.

Claim 3

The transparent conductive sheet according to claim 2, wherein said organosilicon compound-containing organic resin layer is said solvent-resistant layer.

Claim 4

The transparent conductive sheet according to claim 2, wherein said resin composition of said cured layer contains said first radiation curing resin and said hydrolysate in a solid weight ratio of 20:1 to 1:3.

Claim 5

The transparent conductive sheet according to claim 2, wherein said alkoxysilane hydrolysate is a hydrolysate of an alkoxysilane selected from vinyltrimethoxysilane, vinyltriethoxysilane, γ-acryloxypropyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, γ-aminopropyltriethoxysilane and γ-glycidoxypropyltrimethoxysilane.

Claim 6

The transparent conductive sheet according to claim 1, wherein said first radiation curing resin contains a polyfunctional acrylate component.

Claim 7

The transparent conductive sheet according to claim 6, wherein said first radiation curing resin contains a multifunctional acrylate component represented by the general formula (8) wherein X is a divalent group represented by in which R is hydrogen atom, halogen atom, methyl or ethyl and n is a number in a range of 0.5 to 2 as an average.

Claim 8

The transparent conductive sheet according to claim 1, wherein said organosilicon compound-containing organic resin layer on said metal oxide layer is made of a polymer produced by hydrolysis of an organosilicon compound represented by the following general formula (3) wherein R 3 is hydrogen, a phenyl group, an alkyl group of 1-4 carbon atoms or a group represented by the general formula (4) (in which x is an integer of 1-12, and R 7 and R 8 are each independently hydrogen or an alkyl group of 1-4 carbon atoms), R 4 is hydrogen or an alkyl group of 1-4 carbon atoms, R 5 and R 6 are each independently an alkyl group of 1-4 carbon atoms, y is an integer of 1-12, w is 0 or an integer of 1-2, z is an integer of 1-3, and w + z = 3.

Claim 9

The transparent conductive layer according to claim 8, wherein said solvent-resistant layer is a second radiation cured resin containing acryl isocyanate and is formed on said organosilicon compound-containing organic resin layer as an anchor layer.

Claim 10

The transparent conductive sheet according to claim 9, wherein said second radiation curing resin is an acrylic-based resin containing an aliphatic polyfunctional acrylic resin with 2 or more acryl groups per molecule in an amount of at least 50 wt% based on the total resin.

Claim 11

The transparent conductive sheet according to claim 10, wherein said acrylic-based resin is a compound having a radiation active acryl group and an isocyanate group and is represented by the general formula (7) wherein R is alkylene group having 6 or less carbon atoms or alkylene oxide group having 4 or less carbon atoms.

Claim 12

The transparent conductive sheet according to claim 9, wherein the content of said acryl isocyanate in said second radiation curing resin is in the range of 5 to 20 wt% with respect to the resin portion.

Claim 13

The transparent conductive sheet according to claim 1, wherein said phenoxy resin of said anchor coat layer is a cured layer obtained by curing a thermal crosslinking resin consisting of a mixture of at least one type of phenoxy-based resin selected from phenoxy resins, phenoxy ether resins and phenoxy ester resins comprising repeating units represented by the following general formula (5) wherein R 9 - R 14 may be the same or different and are hydrogen or an alkyl group of 1 to 3 carbon atoms, R 15 is an alkylene group of 2 to 5 carbon atoms, X is an ether or ester group, m is an integer of 0 to 3 and n is an integer of 20 to 300, and a polyfunctional isocyanate compound containing two or more isocyanate groups.

Claim 14

The transparent conductive sheet according to claim 13, wherein said thermal crosslinking resin has a ratio by number of isocyanate groups in the polyfunctional isocyanate compound to hydroxyl groups in the phenoxy-based resin, NCO/OH, in a range of 0.2 to 3.

Claim 15

The transparent conductive sheet according to claim 13, wherein in said general formula (5), R 9 and R 10 are methyl groups, R 11 - R 14 are hydrogen, and R 15 is a pentylene group.

Claim 16

The transparent conductive sheet according to claim 13, wherein said polyfunctional isocyanate compound of said anchor coat layer is selected from 2,6-tolylene diisocyanate, 2,4-tolylene isocyanate, a tolylene diisocyanate-trimethylolpropane adduct and hexamethylene diisocyanate.

Claim 17

The transparent conductive sheet according to claim 1, wherein said metal oxide layer and said polyvinylalcohol-based resin layer are provided on the same side of said plastic substrate, said polyvinylalcohol-based resin layer being located on an outer side of said metal oxide layer.

Claim 18

The transparent conductive sheet according to claim 1, wherein said metal oxide layer and said polyvinylalcohol-based resin layer are provided on different sides of said plastic substrate, respectively.

Claim 19

The transparent conductive sheet according to claim 1, wherein said plastic substrate is a plastic sheet with a thickness of 70 to 200 µm formed by solution casting, and the transparent conductive sheet has a retardation value of 20 nm or less and a light transmittance of 80% or greater at a wavelength of 550 nm.

Claim 20

The transparent conductive sheet according to claim 1, wherein said metal oxide layer is a layer with a thickness of 5 to 100 nm made of a silicon oxide having an average composition represented by SiO x (1.5 ≦ x ≦ 2).

Claim 21

The transparent conductive sheet according to claim 1, wherein said transparent conductive layer consists mainly of amorphous indium oxide and contains 5 to 15 wt% of tin as a component, said transparent conductive layer having a film thickness of from 20 to 200 nm.

Claim 22

The transparent conductive sheet according to claim 21, wherein said transparent conductive layer is formed directly on said cured layer of said resin composition prepared by mixing said first radiation curing resin and said alkoxysilane hydrolysate.

Claim 23

The transparent conductive sheet according to claim 1, further comprising as a solvent-resistant protective layer, a cured layer formed from a novolac-type epoxy-based curing resin, a silicone-based curing resin or a polyfunctional acrylate-containing radiation curable resin.

Claim 24

A transparent conductive sheet according to claim 23, wherein said epoxy-based curing resin is a novolac-type epoxy resin represented by the following general formula (6) wherein R 16 is H or CH 3 , R 17 is H or a glycidylphenyl ether group, and n is an integer of 1 to 50.

Claim 25

A transparent conductive sheet according to claim 23, wherein said silicone-based curing resin is a silicone-based curing resin containing at least 40 wt% of a trialkoxysilane.

Claim 26

The transparent conductive sheet comprising a first gas barrier layer, a first solvent-resistant layer and a transparent conductive layer laminated in that order on one side of a transparent plastic substrate, and a second gas barrier layer and a second solvent-resistant layer laminated in that order on the other side of said substrate, wherein said first gas barrier layer is a silicon oxide layer, said first solvent-resistant layer is a cured layer of a resin composition prepared by mixing a first radiation curing resin and a hydrolysate of an alkoxysilane represented by the following general formula (1) and/or (2) R 1 -Si(OR 2 ) 3 (1) Si(OR 2 ) 4 (2) wherein R 1 is methyl or ethyl or an organic group containing a vinyl, acryloyl, methacryloyl, amino or epoxy group, and R 2 is methyl or ethyl, in a solid weight ratio of from 20:1 to 1:3, said second gas barrier layer is a polyvinyl alcohol-based resin, and there is provided, between said second gas barrier layer and said transparent plastic substrate, an anchor coat layer which is a cured layer obtained by curing a thermal crosslinking resin consisting of a mixture of at least one type of phenoxy-based resin selected from phenoxy resins, phenoxy ether resins and phenoxy ester resins comprising repeating units represented by the following general formula (5) wherein R 9 - R 14 may be the same or different and are hydrogen or an alkyl group of 1 to 3 carbon atoms, R 15 is an alkylene group of 2 to 5 carbon atoms, X is an ether or ester group, m is an integer of 0 to 3 and n is an integer of 20 to 300, and a polyfunctional isocyanate compound containing two or more isocyanate groups.

Claim 27

A transparent conductive sheet according to claim 26, wherein said second solvent-resistant layer is a cured layer formed from a novolac-type epoxy-based curing resin, a silicone-based resin or a polyfunctional acrylate-containing radiation curable resin.