Optical pressure-sensitive adhesive sheet, liquid crystal display and input device comprising the same

摘要

The present invention provides an excellent optical pressure-sensitive adhesive sheet having an excellent adhesion property to an optical member. In particular, the present invention provides an optical pressure-sensitive adhesive sheet which exhibits an excellent adhesion property to the members constituting an electric capacity touch panel, and does not negatively affect the performance of the touch panel such as a detection sensitivity or a response speed, when used for laminating members constituting the electric capacity type touch panel. The present invention relates to an optical pressure-sensitive adhesive sheet comprising an acrylic pressure-sensitive adhesive layer, wherein a relative dielectric constant at a frequency of 1 MHz is 5 to 10, and an adhesion strength to a glass, which is measured with a peel angle of 180° and a tensile speed of 300 mm/min after 30 min of laminating the optical pressure-sensitive adhesive sheet to the glass, is 3 N/20 mm to 15 N/20 mm.