Conductive laminate and touch panel using same
The present invention provides a touch panel that not only demonstrates little deterioration of performance even in harsh environments at high temperature and high humidity, but is also free of the occurrence of a whitening phenomenon occurring during sudden changes in temperature and humidity, while also having superior shock resistance. Provided are a conductive laminate in which a uniform or arbitrarily patterned conductive layer containing a polythiophene-based conductive agent and an adhesive layer containing an acidic component are in direct contact over the entire surface or a portion thereof, and a touch panel in which it is used.
1. A conductive laminate comprising:
an insulating layer;
first and second conductive layers patterned into a shape having uniaxial regularity laminated onto both sides of the insulating layer so that the patterns of the conductive layer are mutually perpendicular;
a first adhesive layer provided in direct contact over the first conductive layer on the outer side of the first conductive layer;
a second adhesive layer provided in direct contact over the second conductive layer on the outer side of the second conductive layer;
a first extraction electrode in contact with both the first conductive layer and the first adhesive layer, wherein a portion of the first extraction electrode is sandwiched between the first conductive layer and the first adhesive layer,
a second extraction electrode in contact with both the second conductive layer and the second adhesive layer, wherein a portion of the second extraction electrode is sandwiched between the second conductive layer and the second adhesive layer,
wherein the first and the second conductive layers contain a polythiophene-based conductive agent, the first and the second extraction electrodes are formed from metal materials, and the first and the second adhesive layers contain an acidic component.
2. The conductive laminate according to claim 1 , wherein the extraction electrode is formed by a silver paste.
3. The conductive laminate according to claim 1 , wherein the adhesive layer contains an acrylic polymer having a carboxyl group or a derivative thereof.
4. The conductive laminate according to claim 1 , wherein the adhesive layer contains a copolymer comprising a unit derived from one or both of butyl acrylate or ethylhexyl acrylate and a unit derived from acrylic acid.
5. The conductive laminate according to claim 1 , wherein the polythiophene-based conductive agent comprises a polymer of one or both of 3-hexylthiophene or 3,4-ethylenedioxythiophene, or a derivative thereof.
6. A touch panel provided with the conductive laminate according to claim 1 .
7. The touch panel according to claim 6 , wherein said touch panel is of the electrostatic capacitive type.