×

Polarizing plate comprising polyethylene terephthalate protective film, method for manufacturing same, and image display device and liquid-crystal display device comprising same

  • US 10,451,916 B2
  • Filed: 05/22/2015
  • Issued: 10/22/2019
  • Est. Priority Date: 05/22/2014
  • Status: Active Grant
First Claim
Patent Images

1. A polarizing plate comprising:

  • a water-based adhesive layer, a primer layer including an acryl-based unit, and a polyethylene terephthalate protection film sequentially provided on at least one surface of a polarizer,wherein the water-based adhesive layer is applied to the at least one surface of the polarizer, and the primer layer is in contact with the polyethylene terephthalate protection film and the water-based adhesive layer,wherein the polarizer is a polyvinyl alcohol-based film, a partially formalized polyvinyl alcohol-based film, or an ethylene vinyl acetate copolymer-partially saponified film, where molecular chains containing an iodine-based compound or a dichromatic polarizing material are aligned in a predetermined direction,wherein the water-based adhesive layer is formed by using a water-based adhesive including a polyvinyl alcohol-based resin, an amine-based metal compound, and a pH adjuster,wherein the water-based adhesive has a pH of 4 to 9, and comprises 1 to 50 parts by weight of the amine-based metal compound and 0.0001 to 5 parts by weight of the pH adjuster, based on 100 parts by weight of the polyvinyl alcohol-based resin, andwherein the pH adjuster comprises 0.001 to 10 parts by weight of epoxy (meth)acrylate, 10 to 50 parts by weight of alcohol, and 30 to 80 parts by weight of acid, based on 100 parts by weight of the pH adjuster.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×