Transparent conductive laminate and touch panel equipped with it
The transparent conductive laminate of the present invention is a transparent conductive laminate, comprising: a transparent film substrate; a transparent conductive thin film provided on one side of the transparent film substrate with a dielectric thin film interposed therebetween; and a transparent substrate bonded to another side of the transparent film substrate with a transparent pressure-sensitive adhesive layer interposed therebetween, wherein the transparent substrate comprises at least two transparent base films laminated with the transparent pressure-sensitive adhesive layer interposed therebetween, and the dielectric thin film comprises a first transparent dielectric thin film consisting of a SiO x (x is from 1.5 to less than 2) film having a relative refractive index of 1.6 to 1.9, and a second transparent dielectric thin film consisting of a SiO 2 film. This feature can improve the surface contact pressure durability.
1. A transparent conductive laminate, comprising:
a transparent film substrate;
a transparent conductive thin film provided on one side of the transparent film substrate with a dielectric thin film interposed therebetween; and
a transparent substrate bonded to another side of the transparent film substrate with a transparent pressure-sensitive adhesive layer interposed therebetween, wherein
the transparent substrate comprises at least two transparent base films laminated with another transparent pressure-sensitive adhesive layer interposed therebetween, and
the dielectric thin film comprises a first transparent dielectric thin film consisting of a SiO x (x is from 1.5 to less than 2) film having a relative refractive index of 1.6 to 1.9, and a second transparent dielectric thin film consisting of a SiO 2 film.
2. The transparent conductive laminate according to claim 1 , wherein in the dielectric thin film, the first and second transparent dielectric thin films are formed in this order from the film substrate side.
3. The transparent conductive laminate according to claim 1 , wherein the first transparent dielectric thin film is formed by a dry process.
4. The transparent conductive laminate according to claim 1 , wherein the first transparent dielectric thin film has a thickness of 1 to 30 nm, the second transparent dielectric thin film has a thickness of 10 to 70 nm, and the transparent conductive thin film has a thickness of 20 to 35 nm.
5. The transparent conductive laminate according to claim 1 , wherein the conductive thin film comprises crystalline indium tin oxide containing more than 50% of crystals whose grain size is 200 nm or less.
6. The transparent conductive laminate according to claim 1 , further comprising a resin layer provided on an outer surface of the transparent substrate.
7. The transparent conductive laminate according to claim 1 , wherein a side where the conductive thin film is laminated has a hardness of 2 GPa or more.
8. The transparent conductive laminate according to claim 1 , wherein a side where the conductive thin film is laminated has an elastic modulus of 8 GPa or more.
9. A touch panel, comprising the transparent conductive laminate according to claim 1 .