Polarizing plate, polarizing plate adhesive composition for same, and optical display apparatus comprising same
AssigneeSamsung SDI Co., Ltd.
InventorsTae Hyun Lee, Mi Yeon Yu, Seung Jun Lee, Woo Jin Jeong, Il Jin Kim
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Abstract
Provided are a polarizing plate, a polarizing plate adhesive composition for same, and an optical display apparatus comprising same, the polarizing plate comprising: a polarizer; and a polarizing plate adhesive layer and a protective layer which are sequentially formed on at least one surface of the polarizer, wherein the polarizing plate adhesive layer comprises poly(ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS), and the polarizing plate adhesive layer has a surface resistance of about 1×108 to about 1×1012(Ω/□).
Claims12
A polarizing plate comprising:
- a polarizer;
- and
- a bonding layer for polarizing plates and a protective layer sequentially formed on at least one surface of the polarizer;
- wherein the bonding layer for polarizing plates comprises a poly(ethylenedioxythiophene) poly(styrenesulfonate)(PEDOT:PSS), and a crosslinking agent consisting of a salt of glyoxylic acid,
- wherein the bonding layer for polarizing plates has a surface resistance of about 1×108Ω/□ to about 1×1012Ω/□,
- wherein the bonding layer for polarizing plates has a surface resistance of about 1×108Ω/□ to about 1×1012Ω/□ after leaving the polarizing plate under conditions of 85° C. and 85% RH for 250 hours,
- wherein the bonding layer for polarizing plates comprises the PEDOT:PSS stably dispersed throughout in an amount of about 8 wt % to about 20 wt %,
- wherein the bonding layer for polarizing plates is formed of a bonding composition for polarizing plates comprising the PEDOT:PSS, a polyvinyl alcohol resin and the salt of glyoxylic acid,
- wherein the salt of glyoxylic acid is present in an amount of 26 parts by weight to about 50 parts by weight relative to 100 parts by weight of the polyvinyl alcohol resin, and
- the PEDOT:PSS is present in an amount of about 10 parts by weight to about 20 parts by weight relative to 100 parts by weight of the polyvinyl alcohol resin.
A bonding composition for polarizing plates comprising an aqueous solvent, a polyvinyl alcohol resin, a poly(ethylenedioxythiophene) poly(styrenesulfonate)(PEDOT:PSS) and a salt of glyoxylic acid,
- the bonding composition has a pH of 2 to 7,
- the polyvinyl alcohol resin is present in an amount of about 1 part by weight to about 10 parts by weight, relative to 100 parts by weight of the aqueous solvent, and
- the salt of glyoxylic acid is present in an amount of 26 parts by weight to about 50 parts by weight, and the poly(ethylenedioxythiophene) poly(styrenesulfonate)(PEDOT:PSS) is present in an amount of about 10 parts by weight to about 20 parts by weight, each relative to 100 parts by weight of the polyvinyl alcohol resin.
Dependencies are inferred from the claim text.