Samsung Sdi Co., Inc.

Cheil Industries Inc.

In Cheon Han

Ik Hwan Cho

Do Heon Lee

Won Kyu Kim

Ki Yong Kim

Chan Woo Kim

Sung Hyun Mun

Yi Eun Kim

Lee June Kim

Tae Hyun Lee

Ha Yun Cho

Yoo Jin Suh

Seung Jun Lee

Woo Jin Jeong

Mi Yeon Yu

Seung Hoon Lee

Irina Nam

Jee Hee Kim

Young Jong Kim

Dong Heon Yun

Eun Hwan Jeong

Ri Ra Jung

Chul Ho Jeong

Hwan Sung Cheon

Dae Yun Kim

Han Joo Choi

Byung Joo Byun

Mi Ran Seo

Ju Yeol Choi

An adhesive film and an optical display, the adhesive film being prepared from an adhesive composition that includes a (meth)acrylic copolymer, wherein the adhesive film has an elongation of about 750% to about 3,000%, and satisfies the following Equation 1:=about 3.0 to about 20,

Optical display comprising an adhesive film

Provided are an adhesive composition for a polarizing plate, a polarizing plate, and an optical display device, the adhesive composition comprising an epoxy-based compound, a (meth)acrylate-based compound, a photo-acid generator, and an optical radical initiator, the (meth)acrylate-based compound comprising a mixture of a bifunctional (meth)acrylate-based compound and a monofunctional (meth)acrylate-based compound having a hydrophobic functional group, wherein the adhesive strength measured after the adhesive composition for a polarizing plate is separately applied to a PET film, a TAC film, and a COP film, to which a polarizer is then bound, followed by photo-curing, is about 200 gf/inch or more.

Adhesive composition for polarizing plate, polarizing plate, and optical display device

A polarizing plate includes a polarizing film, a first adhesive layer or a bonding layer, a retardation layer, and a third adhesive layer, and includes: a UV absorber comprising an indole UV absorber, a phenylbenzotriazole UV absorber, and/or a triazine UV absorber, wherein the UV absorber has a maximum absorption wavelength of 370 nm or higher, the polarizing plate has a light transmittance of 5% or less in a wavelength range of about 400 nm to about 405 nm and a light transmittance of 35% or higher in a wavelength range of about 440 nm to about 450 nm, the first adhesive layer has a modulus of 1&#xd7;105 Pa or higher at 80&#xb0; C. and a modulus of 1&#xd7;105 Pa or higher at 30&#xb0; C., and the third adhesive layer has a modulus of 5&#xd7;104 Pa to 1&#xd7;106 Pa at 80&#xb0; C. and a modulus of 1&#xd7;105 Pa to 3&#xd7;106 Pa at 30&#xb0; C.

Polarizing plate for light emitting display apparatus having adhesive layers of specified modulus

Provided are: a polarizing plate; a method for manufacturing the polarizing plate; and an optical display device comprising the same, the polarizing plate having an adhesive layer, a barrier layer, a polarizer, and a protective film, which are sequentially stacked, wherein the barrier layer is formed from a barrier layer composition containing an epoxy-based compound and an antimony sulfonium-based initiator.

Polarizing plate, method for manufacturing polarizing plate, and optical display device comprising same

An adhesive film and an optical display, the adhesive film being prepared from an adhesive composition that includes a (meth)acrylic copolymer, wherein the adhesive film has an elongation of about 750% to about 3,000%, and satisfies the following Equation 1:PB/PY=about 3.0 to about 20,

Adhesive film and optical display including the same

The present invention relates to an adhesive composition for an optical member, an optical member comprising the same, and an optical display device comprising the same, wherein the composition comprises a (meth)acryl-based copolymer containing an acetoacetoxy group, a metal chelate curing agent, and a tri- or higher functional isocyanate-based curing agent, the (meth)acryl-based copolymer having an acid value of 0 mgKOH/g.

Adhesive composition for optical member, optical member comprising same, and optical display device comprising same

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.

Polarizing plate using adhesive composition and optical member comprising the same

A composition for protective layers of a polarizing plate includes a photocurable monomer or oligomer having a glass transition temperature (Tg) of about 50&#xb0; C. or greater, particles, a reactive monomer or oligomer, and an initiator. A polarizing plate includes a polarizer and a protective layer formed from the composition on one or both surfaces of the polarizer. The protective layer has a storage modulus at about 25&#xb0; C. of greater than about 2000 MPa, as measured at a heating rate of 10&#xb0; C./min, a temperature of &#x2212;50&#xb0; C. to 100&#xb0; C., a frequency of 1 Hz, and a strain of 0.5%. An optical display includes the polarizing plate.

Polarizing plate, composition for protective layers of a polarizing plate, and optical display including the same

An adhesive film includes a cured product of a (meth)acrylic copolymer and has a refractive index from about 1.5 to about 1.6. An adhesive composition for preparing the adhesive film includes a (meth)acrylic copolymer of a monomer mixture. A display member includes the adhesive film coated on one or more surfaces of an optical film.

Adhesive film, adhesive composition for the same, and display member including the same

An adhesive film for polarizing plates, a polarizing plate including the same, and an optical display including the same are provided. An adhesive film for polarizing plates is formed of an adhesive composition including a (meth)acrylic copolymer and a cellulose ester binder. The (meth)acrylic copolymer contains an alkyl group, a hydroxyl group, an alicyclic group, and a hetero-alicyclic group. The adhesive film has a modulus at 30&#xb0; C. of about 100,000 Pa or more.

Adhesive film for polarizing plate, polarizing plate and optical display comprising the same

An adhesive film of the present invention comprises a (meth)acrylate-based copolymer and a cross-linking agent, and a gel fraction thereof is approximately 50-95%, and a ratio of change G' in storage modulus thereof, represented by the following formula 1, is 20% or less.&#x2032;=(7&#x2212;1)/1&#xd7;100&#x2003;&#x2003;[Formula 1] (In formula 1, G1 is a storage modulus at 25&#xb0; C. when the adhesive film is matured at 23&#xb0; C. and a relative humidity (RH) of 55% for one day, and G7 represents a storage modulus at 25&#xb0; C. when the adhesive film is matured at 23&#xb0; C. and an RH of 55% for seven days.)

Adhesive film and display member using same

A polarizing plate includes a polarizer, a bonding layer on an upper surface of the polarizer, a protective film on an upper surface of the bonding layer and having a moisture transmittance of about 30 g/m2&#xb7;24 hr or less at 40&#xb0; C. and 90 % relative humidity (RH), and a barrier layer on a lower surface of the polarizer and formed of a barrier layer composition including an alicyclic epoxy resin having a glass transition temperature of about 200&#xb0; C. or more. The polarizing plate may have a light transmittance variation rate of 3% or less, as calculated by Equation 1:Light transmittance variation rate=|0&#x2212;500|/0&#xd7;100&#x2003;&#x2003;(1),where Tis an initial light transmittance and Tis a light transmittance after 500 hours as set forth herein.

Polarizing plate and optical display including the same

An adhesive film for polarizing plates, an adhesive composition for polarizing plates, a polarizing plate including the same, and an optical display including the same are provided. An adhesive film for polarizing plates is formed of an adhesive composition including: a (meth)acrylic copolymer including a hydroxyl group and a carboxylic acid group; a bifunctional aziridine curing agent; and an isocyanate curing agent, and has an adhesive strength of about 2,500 gf/25 mm or more.

Adhesive film for polarizing plate, adhesive composition for polarizing plate for the same, polarizing plate comprising the same and optical display comprising the same

A polarizing plate, a method for manufacturing the same, and an optical display including the same are disclosed. The polarizing plate includes a polarizer, a protective coating layer on one surface of the polarizer, and an adhesive layer on one surface of the protective coating layer. The polarizing plate satisfies inequality 1.max&#x2212;min&#x2264;0.02&#x2003;&#x2003;(1)In Inequality 1, Rmax is the maximum index of refraction among the indexes of refraction of the polarizer, the protective coating layer and the adhesive layer, and Rmin is the minimum index of refraction among the indexes of refraction of the polarizer, the protective coating layer and the adhesive layer.

Polarizing plate, method for manufacturing the same, and optical display including the same

An adhesive film for polarizing plates, a polarizing plate including the same, and an optical display including the same are provided. An adhesive film for polarizing plates is formed of an adhesive composition for polarizing plates, which includes a non-carboxylic acid (meth)acrylic copolymer, an isocyanate curing agent, and an epoxy curing agent, wherein the adhesive film has a modulus at 85&#xb0; C. of about 0.1 MPa to about 0.8 MPa and a modulus ratio of about 3 or less, as calculated by the equation, Modulus ratio=G'(25&#xb0; C.)/G&#x2032;(85&#xb0; C.), where G&#x2032;(25&#xb0; C.) is modulus (unit: MPa) at 25&#xb0; C. of an adhesive film and G&#x2032;(85&#xb0; C.) is modulus (unit: MPa) at 85&#xb0; C. of the adhesive film.

Growing community of inventors

Uiwang-si, South Korea

In Cheon Han