公开(公告)号：US20180157125A1

公开(公告)日：2018-06-07

申请号：US15579645

申请日：2016-06-14

Applicant: NITTO DENKO CORPORATION

Inventor： Atsushi Yasui ,  Shou Takarada ,  Shinya Yamamoto ,  Ryohei Sawazaki

IPC: G02F1/1337 ,  B32B27/30 ,  C09J133/06 ,  G02B5/30 ,  G02F1/1333 ,  G02F1/1335

CPC classification number: G02F1/133711 ,  B32B27/00 ,  B32B27/30 ,  C09J7/22 ,  C09J7/385 ,  C09J133/06 ,  C09J133/08 ,  C09J2201/128 ,  C09J2203/318 ,  C09J2433/00 ,  G02B1/16 ,  G02B5/3016 ,  G02B5/3033 ,  G02F1/1333 ,  G02F1/13338 ,  G02F1/1335 ,  G02F1/133528 ,  H01L51/5281 ,  C08F2220/1858 ,  C08F2220/1891 ,  C08F226/10

Abstract: A double-sided pressure-sensitive adhesive-layer-attached polarizing film has a polarizing film nearest to a viewer-side of an image display device among at least one polarizing film, a pressure-sensitive adhesive layer A located on the viewer-side, and a pressure-sensitive adhesive layer B on a side of the polarizing film that is opposite to the pressure-sensitive adhesive layer A. The pressure-sensitive adhesive layers A and B are equipped with separators SA and SB, respectively. The polarizing film is a single-side protected polarizing film having a polarizer of 15 μm or less thickness and having a transparent protective film on only a single side of the polarizer. The pressure-sensitive adhesive layer B is located on the polarizer side of the single-side protected polarizing film. The pressure-sensitive adhesive layer A has a thickness of 25 μm or more; and the pressure-sensitive adhesive layer B has a thickness of 25 μm or less.

公开(公告)号：US20200307155A1

公开(公告)日：2020-10-01

申请号：US16308873

申请日：2016-06-14

Applicant: NITTO DENKO CORPORATION

Inventor： Atsushi Yasui ,  Shou Takarada ,  Shinya Yamamoto ,  Ryohei Sawazaki

IPC: B32B7/12 ,  B32B27/36 ,  B32B27/16 ,  B32B17/06 ,  C09J7/38 ,  C09J7/10 ,  G02B5/30

Abstract: A double-sided pressure-.sensitive-adhesive-layer-attached polarizing film is disclosed having a polarizing film nearest to a viewer-side of an nnage display device, a pressure-sensitive adhesive layer A located on the viewer-side of the polarizing film, and a pressure-sensitive adhesive layer B on a side of the polarizing film that is opposite to the pressure-sensitive adhesive layer A. The pressure-sensitive adhesive layers A and B are equipped with separators SA and SB, respectively. The polarizing film is a single-side protected polarizing film having a polarizer of 15 pm or less thickness and having a transparent protective film on only a single side of the polarizer. The pressure-sensitive adesive layer B is located on the transparent protective film side of the single-side protected polarizing film. The pressure-sensitive adhesive layer A has a thickiess of 25 μm or more: and the pressure-sensitive adhesive layer B has a thickness of 25 μm or less.

公开(公告)号：US10310333B2

公开(公告)日：2019-06-04

申请号：US15579645

申请日：2016-06-14

Applicant: NITTO DENKO CORPORATION

Inventor： Atsushi Yasui ,  Shou Takarada ,  Shinya Yamamoto ,  Ryohei Sawazaki

IPC: G06F3/041 ,  G02F1/1337 ,  B32B27/00 ,  B32B27/30 ,  C09J133/06 ,  G02F1/1333 ,  G02F1/1335 ,  G02B5/30 ,  H01L51/52 ,  C09J133/08 ,  C09J7/38 ,  C09J7/22 ,  G02B1/16

Abstract: A double-sided pressure-sensitive adhesive-layer-attached polarizing film has a polarizing film nearest to a viewer-side of an image display device among at least one polarizing film, a pressure-sensitive adhesive layer A located on the viewer-side, and a pressure-sensitive adhesive layer B on a side of the polarizing film that is opposite to the pressure-sensitive adhesive layer A. The pressure-sensitive adhesive layers A and B are equipped with separators SA and SB, respectively. The polarizing film is a single-side protected polarizing film having a polarizer of 15 μm or less thickness and having a transparent protective film on only a single side of the polarizer. The pressure-sensitive adhesive layer B is located on the polarizer side of the single-side protected polarizing film. The pressure-sensitive adhesive layer A has a thickness of 25 μm or more; and the pressure-sensitive adhesive layer B has a thickness of 25 μm or less.

公开(公告)号：US20230102451A1

公开(公告)日：2023-03-30

申请号：US17951362

申请日：2022-09-23

Applicant: Nitto Denko Corporation

Inventor： Masamichi MATSUMOTO ,  Hirofumi Katami ,  Sho Takarada ,  Ryohei Sawazaki ,  Kazuma Mitsui

IPC: C09J7/38 ,  C09J133/08 ,  G06F3/041 ,  C09J123/02

Abstract: An object of the present invention is to provide a pressure-sensitive adhesive sheet, an optical member, and a touch panel that enable a pressure-sensitive adhesive layer to be formed, the pressure-sensitive adhesive layer allowing the appearance of a display device and an input device to be unlikely to deteriorate even under low pressure conditions. The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive layer, and the number of the voids having a diameter of 300 μM or more in the following low pressure test is less than 10, and the number of the voids having a diameter of not less than 50 less than 300 μM in the following low pressure test is less than 20.

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.