Polarizer having protection films in two sides and optical device comprising the same

摘要

A double-sided polarizer includes a polarizing film, a first adhesive layer formed on one surface of the polarizing film, a second adhesive layer formed on the other surface of the polarizing film, a first transparent film formed on the first adhesive layer, and a second transparent film formed on the second adhesive layer, wherein the first adhesive layer and the second adhesive layer are formed of an active energy line-curable adhesive and the first adhesive layer is 0.1 μm to 3 μm thick, and there is also provided an optical device including the double-sided polarizer.

主权项

1. A double-sided polarizer comprising: a polarizing film; a first adhesive layer formed on one surface of the polarizing film; a second adhesive layer formed on the other surface of the polarizing film; a first transparent film formed on the first adhesive layer; and a second transparent film formed on the second adhesive layer,
wherein the first adhesive layer and the second adhesive layer are formed of an active energy line-curable adhesive, and the first adhesive layer is 0.1 μm to 3 μm thick, wherein the first adhesive layer and the second adhesive layer are formed of a cationic adhesive, and the cationic adhesive includes: (1) 5 wt % to 90 wt % of an epoxy compound which is a combination of a first epoxy compound including one or more epoxidized aliphatic ring group and a second epoxy compound including one or more glycidyl ether group; (2) 5 wt % to 90 wt % of an oxetane compound having at least one oxetanyl group in a molecule; and (3) 0.5 wt % to 20 wt % of a cationic photo-polymerization initiator, wherein the first epoxy compound and the second epoxy compound have a weight ratio of 1:1 to 3:1, and wherein a weight of the first epoxy compound is more than or equal to a weight of the second epoxy compound.