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US 10,883,020 B2Granted
Pressure-sensitive adhesive polarizing plate
AssigneeLG Chem, Ltd.
InventorsHyoung Sook Park, Se Woo Yang, Hyun Hee Son, So Ra Yoon, Sul Ki Han
Life of this patent
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Abstract
As a pressure-sensitive adhesive polarizing plate, for example, a pressure-sensitive adhesive polarizing plate allowing a pressure-sensitive adhesive layer in the polarizing plate to have an excellent interfacial adhesion with another layer and have no detachment phenomenon can be provided in the present application.
Claims12
A pressure-sensitive adhesive polarizing plate, comprising:
- a polarizer;
- and
- a pressure-sensitive adhesive layer which is formed on one surface of the polarizer and formed of a cross-linkable composition comprising an acrylic pressure-sensitive adhesive resin and includes a polyalkylene polyol compound having 3 or more hydroxyl groups,
- wherein the polyalkylene polyol compound is represented by the following Formula 1 and wherein the polyalkylene polyol compound has a weight average molecular weight of 30,000 or less:
- (HOnAB)m [Formula 1]
- where A is a core including a polyalkylene oxide unit, B is a chain represented by the following Formula 2, m is an integer of 1 or more, n is an integer of 0 or more, and the sum (m+n) of m and n is 3 or more:
- L1-Q1-L2O-A1xyL3-Q2-L4A2-Oz-A3-OH [Formula 2]
- where A1 to A3 each independently represent an alkylene group, Q1 and Q2 represent an aliphatic or aromatic divalent residue, L1 to L4 represent linkers, x is an integer of 1 or more, y is an integer of 0 or more, and z is an integer of 1 or more.
5 more elements
A pressure-sensitive adhesive layer-coated polarizing plate, comprising at least:
- a polarizing film having a transparent protective film formed on one or both surfaces of a polarizer;
- and
- a pressure-sensitive adhesive layer,
- wherein the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive composition containing a (meth)acrylic polymer and an ionic compound with an anion component and a cation component,
- the (meth)acrylic polymer is an aromatic ring-containing (meth)acrylic polymer having an aromatic ring-containing alkyl (meth)acrylate as a monomer unit, and
- the pressure-sensitive adhesive composition further includes a polyalkylene polyol compound having 3 or more hydroxyl groups,
- wherein the polyalkylene polyol compound is represented by the following Formula 1 and wherein the polyalkylene polyol compound has a weight average molecular weight of 30,000 or less:
- where A is a core including a polyalkylene oxide unit, B is a chain represented by the following Formula 2, m is an integer of 1 or more, n is an integer of 0 or more, and the sum (m+n) of m and n is 3 or more:
- where A1 to A3 each independently represent an alkylene group, Q1 and Q2 represent an aliphatic or aromatic divalent residue, L1 to L4 represent linkers, x is an integer of 1 or more, y is an integer of 0 or more, and z is an integer of 1 or more.
6 more elements
Dependencies are inferred from the claim text.