OPTICAL FILM WITH ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE

摘要

A pressure-sensitive adhesive layer-attached optical film of the present invention comprises an optical film; and a pressure-sensitive adhesive layer and made from an ammonia-containing water-dispersible pressure-sensitive adhesive, wherein the pressure-sensitive adhesive layer has an ammonia content of 10 to 500 μg per 1 g of the pressure-sensitive adhesive layer, and shows a difference of 0 to 500 μg per 1 g of the pressure-sensitive adhesive layer in ammonia content before and after a heat durability test and humidity durability test, and the optical film includes a polarizing film with a degree of polarization of 99.99% or more. The pressure-sensitive adhesive layer-attached optical film has optical properties which are less changeable even in a high-temperature and/or high-humidity environment.

主权项

1. A pressure-sensitive adhesive layer-attached optical film, comprising:
an optical film; and a pressure-sensitive adhesive layer for an optical film placed on at least one side of the optical film and made from an ammonia-containing water-dispersible pressure-sensitive adhesive, wherein the pressure-sensitive adhesive layer has an ammonia content, measured by attributing to the pressure-sensitive adhesive layer, of 10 to 500 μg per 1 g of the pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer shows a difference of 0 to 500 μg per 1 g of the pressure-sensitive adhesive layer in ammonia content before and after a heat durability test in which the pressure-sensitive adhesive layer is heated at 90° C. for 1,000 hours and also shows a difference of 0 to 500 μg per g of the pressure-sensitive adhesive layer in ammonia content before and after a heat and humidity durability test in which the pressure-sensitive adhesive layer is stored at 60° C. and 95% R.H. for 1,000 hours, and the optical film includes a polarizing film with a degree of polarization of 99.99% or more.