Pressure-sensitive-adhesive composition, pressure-sensitive-adhesive layer, pressure-sensitive-adhesive-layer-attached polarizing film, and image display device

An image display device, comprising:

• a pressure-sensitive-adhesive-layer-attached polarizing film;
• and a liquid crystal cell comprising a transparent conductive substrate having a transparent conductive layer and a transparent substrate;
• wherein the pressure-sensitive-adhesive-layer-attached polarizing film comprises a polarizing film and a pressure-sensitive-adhesive layer for transparent conductive layer,
• wherein the pressure-sensitive-adhesive layer for transparent conductive layer is formed from a pressure-sensitive-adhesive composition, comprising a (meth)acryl-based polymer, a crosslinking agent and an oligomer epoxy-group-containing silane coupling agent having an epoxy equivalent of 250 to 600 g/mol,
• the silane coupling agent has, in a molecule thereof, two or more alkoxysilyl groups, and an alkoxy group amount of 10 to 50% by weight of the silane coupling agent,
• wherein the (meth)acryl-based polymer has a weight-average molecular weight of 1,200,000 to 2,500,000, and a molecular weight distribution of 1.8 to 5, and comprises, as monomer units thereof, 70% or more by weight of an alkyl (meth)acrylate;
• a hydroxyl-group-containing monomer and an N-vinyl-group-containing lactam monomer, and
• wherein the pressure-sensitive-adhesive layer for transparent conductive layer of the pressure-sensitive-adhesive-layer-attached polarizing film is bonded to the transparent conductive layer of the liquid crystal cell.