公开(公告)号：US09921342B2

公开(公告)日：2018-03-20

申请号：US14856635

申请日：2015-09-17

Applicant: NITTO DENKO CORPORATION

Inventor： Takeharu Kitagawa ,  Yuki Kida

IPC: G02B1/14 ,  G02B5/30

CPC classification number: G02B1/14 ,  G02B5/3033

Abstract: 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 μm or more; the transparent protective layer has a thickness of 30 μm or less; the transparent protective layer has a moisture permeability of 200 g/m2/24 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 μm 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.

公开(公告)号：US10551540B2

公开(公告)日：2020-02-04

申请号：US14900568

申请日：2014-06-20

Applicant: NITTO DENKO CORPORATION

Inventor： Takeharu Kitagawa ,  Yuki Kida ,  Shinsuke Akizuki ,  Atsushi Yasui ,  Yusuke Toyama ,  Takaaki Ishii

IPC: C09J133/06 ,  C09J5/06 ,  C09J7/38 ,  C09J7/40 ,  C09J7/22 ,  C08L33/06 ,  C08K5/13 ,  C08K5/14 ,  G02B5/30 ,  B32B7/12 ,  C09J7/10 ,  G02F1/1335 ,  C08K5/00

Abstract: 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.

公开(公告)号：US10274659B2

公开(公告)日：2019-04-30

申请号：US15512328

申请日：2015-09-18

Applicant: NITTO DENKO CORPORATION

Inventor： Akinori Izaki ,  Ryohei Sawazaki ,  Atsushi Yasui ,  Yuki Kida ,  Takeharu Kitagawa ,  Takuya Mori

IPC: G02B5/30

Abstract: 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 μm or less; the pressure-sensitive adhesive layer has a thickness of 15 μm or less; the optical functional film has a moisture permeability of 200 g/m2/24 h or less; and the protective film has a moisture permeability of 1,000 g/m2/24 h or less.

公开(公告)号：US20160084996A1

公开(公告)日：2016-03-24

申请号：US14856635

申请日：2015-09-17

Applicant: NITTO DENKO CORPORATION

Inventor： Takeharu Kitagawa ,  Yuki Kida

IPC: G02B1/14 ,  G02B5/30

CPC classification number: G02B1/14 ,  G02B5/3033

Abstract: 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 μm or more; the transparent protective layer has a thickness of 30 μm or less; the transparent protective layer has a moisture permeability of 200 g/m2/24 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 μm 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.

Abstract translation: 本发明的偏光板包括：第一粘合层，透明保护层，第二粘合层和偏振膜，其中：第一粘合层的厚度为10μm以上; 透明保护层的厚度为30μm以下; 透明保护层的透湿性为200g / m 2/24小时以下， 第二粘合层的体积吸水率为10重量％以下; 偏光膜的厚度为10μm以下， 并且偏振膜相对于偏振膜的重量的硼酸含量为18重量％以下。