Nitto-denko Corporation

Yuki Kida

Takeharu Kitagawa

Atsushi Yasui

Takaaki Ishii

Akinori Izaki

Yusuke Toyama

Takuya Mori

Shinsuke Akizuki

Ryohei Sawazaki

Provided are a separator-attached adhesive layer structure which comprises a separator having moderate light peelability with respect to an adhesive layer and exhibits excellent processability and durability, and a production method therefor. The production method comprises: a first step of forming a layer of an adhesive composition containing a (meth)acryl-based polymer, a peroxide and a phenolic antioxidant, on a release treatment surface of a separator subjected to a release treatment; and a second step of, after completion of the first step, heating the adhesive composition to cause cross-linking therein so as to be formed as an adhesive layer.

Separator-attached adhesive layer structure and production method therefor, separator-attached adhesive layer and polarizing film combination structure and production method therefor, and image display device

A polarizing plate including an optical functional film and a polarizing film (polarizer), the polarizing plate being thin and excellent in durability of the polarizing film. The polarizing plate includes an optical functional film, a pressure-sensitive adhesive layer, a polarizing film, and a protective film in the stated order, in which: the polarizing film has a thickness of 15 &#x3bc;m or less; the pressure-sensitive adhesive layer has a thickness of 15 &#x3bc;m or less; the optical functional film has a moisture permeability of 200 g/m/24 h or less; and the protective film has a moisture permeability of 1,000 g/m/24 h or less.

Polarizing plate comprising an optical functional film and a protective film having a specified moisture permeability

A polarizing plate of the present invention includes: a first adhesion layer, a transparent protective layer, a second adhesion layer, and a polarizing film in the stated order, wherein: the first adhesion layer has a thickness of 10 &#x3bc;m or more; the transparent protective layer has a thickness of 30 &#x3bc;m or less; the transparent protective layer has a moisture permeability of 200 g/m/24 hr or less; the second adhesion layer has a bulk water absorption ratio of 10 wt % or less; the polarizing film has a thickness of 10 &#x3bc;m or less; and the polarizing film has a boric acid content of 18 wt % or less with respect to a weight of the polarizing film.

Polarizing plate and optical laminate

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Ibaraki, Japan

Yuki Kida