POLARIZING FILM, METHOD OF MANUFACTURING THE SAME, AND DISPLAY DEVICE
A polarizing film includes a core layer including a first hydrophobic polymer and a dichroic dye, and a first skin layer and a second skin layer disposed at respective sides of the core layer and including a second hydrophobic polymer, wherein the first skin layer, the core layer, and the second skin layer are integrated.
1 . A polarizing film comprising:
a core layer comprising a first hydrophobic polymer and a dichroic dye; and
a first skin layer and a second skin layer disposed at respective sides of the core layer and comprising a second hydrophobic polymer,
wherein the first skin layer, the core layer, and the second skin layer are integrated.
2 . The polarizing film of claim 1 , wherein the first hydrophobic polymer and the second hydrophobic polymer are the same as, or different from, each other.
3 . The polarizing film of claim 1 , wherein the first hydrophobic polymer and the second hydrophobic polymer comprise polyolefin, polyamide, polyester, poly(meth)acrylic, polystyrene, a copolymer thereof, or a combination thereof.
4 . The polarizing film of claim 1 , wherein the first hydrophobic polymer and the second hydrophobic polymer comprise polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate glycol, polyethylene naphthalate, nylon, a copolymer thereof, or a combination thereof.
5 . The polarizing film of claim 1 , wherein the dichroic dye is present in an amount of about 0.1 to about 10 parts by weight based on 100 parts by weight of the first hydrophobic polymer.
6 . The polarizing film of claim 5 , wherein the dichroic dye is present in an amount of about 0.5 to about 5 parts by weight based on 100 parts by weight of the first hydrophobic polymer.
7 . The polarizing film of claim 1 , wherein a ratio of the sum of the thicknesses of the first skin layer and the second skin layer, to the thickness of the core layer, is about 1:4 to about 4:1.
8 . A method of manufacturing a polarizing film, comprising:
melt-blending a first hydrophobic polymer and a dichroic dye to prepare a composition for a core layer;
melting a second hydrophobic polymer to prepare a composition for a skin layer; and
co-extruding the composition for a core layer with the composition for a skin layer at both sides of the composition for a core layer.
9 . The method of claim 8 , wherein the first hydrophobic polymer and the second hydrophobic polymer are the same as, or different from, each other.
10 . The method of claim 8 , wherein the first hydrophobic polymer and the second hydrophobic polymer comprise polyolefin, polyamide, polyester, poly(meth)acrylic, polystyrene, a copolymer thereof, or a combination thereof.
11 . The method of claim 8 , wherein the first hydrophobic polymer and the second hydrophobic polymer comprise polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate glycol, polyethylene naphthalate, nylon, a copolymer thereof, or a combination thereof.
12 . The method of claim 8 , wherein the dichroic dye is present in an amount of about 0.1 to about 10 parts by weight based on 100 parts by weight of the first hydrophobic polymer.
13 . The method of claim 12 , wherein the dichroic dye is present in an amount of about 0.5 to about 5 parts by weight based on 100 parts by weight of the first hydrophobic polymer.
14 . The method of claim 8 , wherein the ratio of the sum of the thicknesses of the first skin layer and the second skin layer, to the thickness of the core layer, is about 1:4 to about 4:1.
15 . A display device comprising the polarizing film of claim 1 .