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US 10,647,898 B2Granted
Polarizing plate using adhesive composition and optical member comprising the same
AssigneeCheil Industries Inc.
InventorsMi Yeon Yu, Tae Hyun Lee, Do Heon Lee, Ik Hwan Cho, In Cheon Han
Life of this patent
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Abstract
Disclosed are an adhesive composition for polarizing plates, a polarizing plate using the same, a method for preparing the same, and an optical member including the same. The adhesive composition includes (A) a (meth)acrylic radical compound, (B) a cationic epoxy compound, (C) a phenoxy resin, and (D) a photoinitiator.
Claims9
A polarizing plate comprising a polarizer and a protective film stacked on and fixed to one or both sides of the polarizer via an adhesive layer,
- wherein the adhesive layer comprises:
- 19 part by weight to 50 parts by weight of (A) a (meth)acrylic radical compound, the (meth)acrylic radical compound being a monofunctional (meth)acrylic radical compound and including a (meth)acrylate compound containing a C1-C20 alkyl group that has at least one hydrophilic group,
- 50 parts by weight to 80 parts by weight of (B) a cationic epoxy compound, the cationic epoxy compound including an alicyclic epoxy compound, an aromatic epoxy compound, an aliphatic epoxy compound, a hydrogenated epoxy compound, or mixtures thereof,
- 0.1 parts by weight to 2.5 parts by weight of (C) a phenoxy resin, the phenoxy resin being a non-curable phenoxy resin, and
- 0.1 parts by weight to 10 parts by weight of (D) a photoinitiator, all amounts based on 100 parts by weight of (A)+(B)+(C),
- wherein the polarizer has a maximum shrinkage length of about 2 mm or less at one end thereof when the polarizing plate is dipped in water having a constant temperature of 60° C. for 2hours.
3 more elements
An optical member, comprising:
- a display panel;
- and
- a polarizing plate,
- wherein:
- the polarizing plate includes a polarizer and a protective film stacked on one or both sides of the polarizer via an adhesive layer, the one side of the polarizer facing the display panel such that the adhesive layer and the protective film are between the display panel and the polarizer,
- the adhesive layer includes (A) a (meth)acrylic radical compound, (B) a cationic epoxy compound, (C) a phenoxy resin, and (D) a photoinitiator, and
- the polarizer has a maximum shrinkage length of about 2 mm or less at one end thereof when the polarizing plate is dipped in water having a constant temperature of 60° C. for 2 hours.
4 more elements
Dependencies are inferred from the claim text.