Samsung Sdi Co., Inc.

Cheil Industries Inc.

Ri Ra Jung

Sang Hum Lee

Eun Su Park

Yoon Jung Kim

Chul Ho Jeong

In Cheon Han

Woo Jin Jeong

Kwang Ho Shin

Won Kyu Kim

Jung Hun You

Jun Mo Koo

Yi Eun Kim

Bong Choon Kim

Han Mam Jeong

Kyu Sik Kim

Seung Hoon Lee

Dong Yoon Shin

Tae Joon Park

Hae Ryong Chung

Irina Nam

Kyoung Ah Oh

Mi Yeon Yu

Tae Hyun Lee

Do Heon Lee

Eun Hwan Jeong

Yoo Jin Suh

Ha Yun Cho

Mun Bo Ko

Yeon Ju Jung

Na Young Kim

Su Yeon Lee

Hee Yeon Ki

Jin Joo Kim

Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising: a polarizer; and a first phase difference layer, a second phase difference layer and a third phase difference layer which are sequentially stacked on the lower surface of the polarizer. The first phase difference layer comprises a positive C phase difference layer. The second phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 200 nm to 280 nm in a wavelength of 550 nm. The third phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 80 nm to 145 nm in a wavelength of 550 nm. When the absorption axis of the polarizer is 0°, the angle formed by the slow axis of the second phase difference layer is approximately +14° to +24° or approximately −24° to −14°, and the angle formed by the slow axis of the third phase difference layer is approximately +79° to +89° or approximately −89° to −79°.

Polarizing plate and optical display device comprising same

A polarizing plate and an optical display apparatus including the same are provided. The polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer. The first retardation layer has an in-plane retardation (Re) of 200 nm to 250 nm at a wavelength of 550 nm; the second retardation layer has an in-plane retardation (Re) of 80 nm to 140 nm at a wavelength of 550 nm; and the polarizing plate has a total transmittance difference of 2% or more between total transmittance at a wavelength of 450 nm and total transmittance at a wavelength of 420 nm.

Polarizing plate and optical display apparatus comprising the same

Provided are a polarizing plate for a light emitting display device and the light emitting display device including same, the polarizing plate for a light emitting display device having a first adhesive film, a second protective layer, a polarizer, and a first protective layer sequentially laminated therein. The polarizing plate includes a UV absorber; and an as value of the polarizing plate is about &#x2212;2.0 to about &#x2212;20.0, and a bs value of the polarizing plate is about 3.0 to about 30.0.

Polarizing plate for light emitting display device and light emitting display device including same

An adhesive film for polarizing plates includes a (meth)acrylic copolymer obtained by polymerizing about 15 wt % to about 30 wt % of a (meth)acrylic monomer having a hetero-alicyclic ring. The adhesive film has a storage modulus (G') of about 30 kPa or greater as determined from Frequency sweep testing at 85&#xb0; C. by oscillation at an angular speed of 10rad/s to 10rad/s. An adhesive composition for the same, a polarizing plate including the same, and an optical display device including the same are also disclosed.

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

An adhesive composition and an optical member using the same, the adhesive composition providing an adhesive having a storage modulus of about 8&#xd7;10to about 1&#xd7;10dyne/cmand a gel fraction of about 83% to about 95% as defined by Equation 1:Gel fraction (%)=()&#xd7;100,&#x2003;&#x2003;[Equation 1]

Adhesive composition and optical member using the same

An adhesive composition for a polarizing plate, an adhesive film formed from the same, a polarizing plate including the same, and an optical display including the same are disclosed. The adhesive film for a polarizing plate is formed from an adhesive composition including an epoxy compound and a (meth)acrylate compound, and the adhesive film has an FT-IR peak ratio of about 0.015 or lower as defined by Equation 1.Equation 1FT-IR peak ratio=&#x2003;&#x2003;(1)In Equation 1, A is the peak height of the peak attributable to the &#x2014;(C&#x2550;O)&#x2014; bond at 1724 cm, and B is the peak height of the peak attributable to the &#x2014;CH&#x2550;CH&#x2014; bond at 1636 cm.

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

An adhesive for adhering a protective film, the protective film having a water vapor transmission rate of about 100 g/m&#xb7;day or less at 40&#xb0; C. and about 90% RH during manufacture of an optical member including a polarizing plate, a polarizing plate including an adhesive layer prepared from the adhesive, and an optical member including the polarizing plate, the adhesive including a (meth)acrylic copolymer, the (meth)acrylic copolymer having a weight average molecular weight of about 800,000 g/mol or more; a curing agent; and a silane coupling agent, wherein an adhesive layer prepared from the adhesive has a storage modulus, after curing, of about 8&#xd7;10Pa or more at about 85&#xb0; C. and a frequency of about 10rad/s to about 10rad/s.

Adhesive, polarizing plate including an adhesive layer prepared from the adhesive, and optical member including the polarizing plate

A polarizing plate and an optical member, the polarizing plate including an adhesive layer, the adhesive layer being prepared from an adhesive composition including a (meth)acrylic copolymer, a crosslinking agent, and a tackifier, the tackifier including an acrylic modified petroleum resin represented by Formula 1:R'&#x2014;CO&#x2014;O&#x2014;R&#x2003;&#x2003;[Formula 1]

Adhesive composition for polarizing plate and polarizing plate and optical member including adhesive layer formed using the same

Growing community of inventors

Uiwang-si, South Korea

Ri Ra Jung