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US 12,591,080 B2Granted
Polarizing plate
AssigneeOkura Industrial Co., Ltd.
InventorsKeisuke Goto, Kazunori Noma, Hiroyuki Morimoto, Takahisa Yano
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Abstract
To provide a novel polarizing plate that suppresses poor appearance caused by thermal shrinkage of a polarizing film and is excellent in durability. There is provided a polarizing plate including: a polarizing film composed of a polyvinyl alcohol-based resin; and a translucent support substrate laminated on at least one surface of the polarizing film through a bonding layer, in which the bonding layer is composed of a molecular bonding agent that bonds the polarizing film and the support substrate by a chemical bond.
Claims5
A polarizing plate comprising:
- a polarizing film including a polyvinyl alcohol-based resin;
- and
- a translucent support substrate laminated on at least one surface of the polarizing film through a bonding layer,
- wherein the bonding layer includes a molecular bonding agent that bonds the polarizing film and the support substrate by a chemical bond,
- the molecular bonding agent contains a triazine derivative that contains two or more OH groups and/or OH-generating groups and one triazine ring,
- the two or more OH groups and/or OH-generating groups are alkoxysilyl groups, and
- OH groups on a surface of the support substrate are chemically bonded with at least one of the alkoxysilyl groups of the triazine derivative by dehydration condensation, and OH groups on the surface of the polarizing film are chemically bonded with at least another one of the alkoxysilyl groups of the triazine derivative by dehydration condensation.
4 more elements
Dependencies are inferred from the claim text.