Method for manufacturing polarizing plate using mask film and polarizing plate manufactured by same
The present specification relates to a method for manufacturing a polarizing plate using a mask film used for manufacturing a polarizing plate having a locally bleached area, and a polarizing plate manufactured using the same.
1. A method for manufacturing a polarizing plate having a non-polarized portion, the method comprising:
providing a pair of mask films, each mask film comprising a protective film, an adhesive layer disposed on one surface of the protective film, and a perforated portion integrally passing through the protective film and the adhesive layer, wherein the adhesive layer has a thickness of 6 μm to 80 μm;
laminating the pair of mask films on both surfaces of a polarizer having a film form;
bleaching a part of the polarizer corresponding to the perforated portion of each mask film to form a non-polarized portion in the polarizer; and
removing the pair of mask films from the polarizer,
wherein the non-polarized portion has an edge roughness of 30 μm or less.
2. The method for manufacturing a polarizing plate having a non-polarized portion of claim 1 , further comprising:
laminating a polarizer protective film on each of the surfaces from which the pair of mask films are removed.
3. A polarizing plate having a non-polarized portion manufactured using the manufacturing method of claim 1 .
4. An image display device comprising the polarizing plate of claim 3 .
5. A laminate comprising:
a polarizer having a film form; and
a pair of mask films disposed on both surfaces of the polarizer,
wherein each mask film comprises a protective film, an adhesive layer disposed on one surface of the protective film, and a perforated portion integrally passing through the protective film and the adhesive layer.