公开(公告)号：US10983391B2

公开(公告)日：2021-04-20

申请号：US16619689

申请日：2018-05-25

Applicant: NITTO DENKO CORPORATION

Inventor： Takeharu Kitagawa ,  Hirofumi Katami ,  Shusaku Goto

IPC: G02F1/1335 ,  G02B5/30 ,  G02F1/13363 ,  C09J7/29

Abstract: There is provided a polarizing plate with a retardation layer that can achieve an image display apparatus having excellent durability and excellent weatherability, and having an excellent hue. A polarizing plate with a retardation layer according to an embodiment of the present invention includes in this order: a polarizing plate including a protective layer and a polarizer; a retardation layer; and a pressure-sensitive adhesive layer. The protective layer has a light transmittance at a wavelength of 380 nm of 10% or less. The polarizing plate has a light transmittance at a wavelength of 380 nm of 5% or less. The pressure-sensitive adhesive layer has a light transmittance at a wavelength of 405 nm of 5% or less. The polarizing plate with a retardation layer has a light transmittance at a wavelength of 405 nm of 3% or less.

公开(公告)号：US10538055B2

公开(公告)日：2020-01-21

申请号：US15569244

申请日：2016-07-20

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi Katami ,  Atsushi Yasui

IPC: B32B7/02 ,  C09J11/04 ,  C09J201/00 ,  G02B5/30 ,  C09J7/20 ,  B32B7/12

Abstract: Provided is a polarizing film laminate comprising a pressure-sensitive adhesive layer, and a polarizing film wherein the adhesive layer comprises: a base adhesive zone made of a transparent base pressure-sensitive adhesive material and formed over a given range from one principal surface of the adhesive layer in a thickness direction of the adhesive layer; and a refractive index adjustment zone formed over a given range from the other principal surface of the adhesive layer in the thickness direction and comprising the base pressure-sensitive adhesive material and material infiltrated into the base pressure-sensitive adhesive material and different from the base pressure-sensitive adhesive material, the refractive index adjustment zone having an average refractive index greater than a refractive index of the base pressure-sensitive adhesive material, and wherein the base pressure-sensitive adhesive material zone of the pressure-sensitive adhesive layer is located on the side of the polarizing film.

公开(公告)号：US10265927B2

公开(公告)日：2019-04-23

申请号：US15543211

申请日：2016-07-11

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi Katami ,  Atsushi Yasui

IPC: G02B1/111 ,  G02B1/00 ,  G06F3/041 ,  C09J7/38 ,  C09J7/00 ,  C09J201/00 ,  C09J9/00 ,  B32B7/02 ,  B32B3/26 ,  G09F9/00 ,  C09F9/00 ,  H01J37/26 ,  C01B11/00

Abstract: The present invention provides a transparent electroconductive layer-equipped cover element having a pressure-sensitive adhesive sheet preliminarily laminated thereto, wherein the pressure-sensitive adhesive sheet comprises a pressure-sensitive adhesive layer in which a refractive index adjustment zone having a refractive index greater than that of a base pressure-sensitive adhesive material thereof is formed over a given range from a surface of the pressure-sensitive adhesive layer in a thickness direction thereof, whereby: in a lamination process of a customer which is a supply destination of the transparent electroconductive layer-equipped cover element, it becomes possible to eliminate a need to distinguish between obverse and reverse sides of the pressure-sensitive adhesive sheet itself; and, when the transparent electroconductive layer-equipped cover element is bonded to an optical element through the pressure-sensitive adhesive layer, it becomes possible to suppress internal reflection in a laminate formed of these optical elements.

公开(公告)号：US10072184B2

公开(公告)日：2018-09-11

申请号：US14890470

申请日：2015-01-16

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi Katami ,  Toru Umemoto ,  Hiroyuki Takao ,  Takahiro Nonaka ,  Atsushi Yasui ,  Takami Hikita

IPC: C09J7/02 ,  C09J201/00 ,  C09J9/00 ,  C09J7/20 ,  C09J7/22 ,  C09J7/24 ,  C09J7/25 ,  C08K3/22 ,  C08K7/18

CPC classification number: C09J7/255 ,  C08K3/22 ,  C08K7/18 ,  C08K2003/2241 ,  C08K2003/2244 ,  C08K2201/005 ,  C09J7/20 ,  C09J7/22 ,  C09J7/241 ,  C09J9/00 ,  C09J201/00 ,  C09J2203/318 ,  G02F2202/28

Abstract: A pressure-sensitive adhesive sheet comprises a support and a transparent pressure-sensitive adhesive layer on the support. The pressure-sensitive adhesive layer comprises a base adhesive zone made essentially of a transparent base pressure-sensitive adhesive material and formed over a given range from a first principal surface of the pressure-sensitive adhesive layer in a thickness direction of the pressure-sensitive adhesive layer, and a transparent, adherent, refractive index-adjusting zone formed over a given range from a second principal surface of the pressure-sensitive adhesive layer in the thickness direction, and wherein the refractive index-adjusting zone has a refractive index greater than a refractive index of the base pressure-sensitive adhesive material.

公开(公告)号：US20160185083A1

公开(公告)日：2016-06-30

申请号：US14978903

申请日：2015-12-22

Applicant: NITTO DENKO CORPORATION

Inventor： Atsushi Yasui ,  Shou Takarada ,  Masaki Mizutani ,  Hirofumi Katami ,  Shinya Yamamoto

IPC: B32B7/12 ,  G02F1/1335 ,  G02B5/30 ,  B32B27/08 ,  B32B27/30

CPC classification number: B32B7/12 ,  B32B3/08 ,  B32B9/045 ,  B32B17/064 ,  B32B23/08 ,  B32B27/08 ,  B32B27/28 ,  B32B27/304 ,  B32B27/308 ,  B32B27/32 ,  B32B27/36 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/21 ,  B32B2307/306 ,  B32B2307/4026 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2307/514 ,  B32B2307/542 ,  B32B2307/732 ,  B32B2457/202 ,  C09J7/38 ,  C09J7/385 ,  C09J7/40 ,  C09J133/08 ,  C09J133/10 ,  C09J133/12 ,  C09J2201/606 ,  G02B5/3033 ,  G02F1/133528 ,  G02F2202/28

Abstract: A pressure-sensitive-adhesive-layer-attached polarizing film, comprising: a polarizing film which is provided nearest to a viewer-side of an image display device among at least one polarizing film used in the device, a pressure-sensitive adhesive layer A arranged at a viewer-side of the polarizing film, and a pressure-sensitive adhesive layer B arranged at a side of the polarizing film that is opposite to the viewer-side of the polarizing film; wherein the pressure-sensitive adhesive layer A is a multiple pressure-sensitive adhesive layer having at least a first pressure-sensitive adhesive layer (a) and a second pressure-sensitive adhesive layer (b) in an order of the recited layers from the outermost surface side of the pressure-sensitive adhesive layer A.

Abstract translation: 1.一种带有压敏粘合剂层的偏光膜，其特征在于，包括：在所述装置中使用的至少一种偏光膜中最靠近图像显示装置的观察者侧设置的偏振膜，压敏粘合剂层A 布置在偏振膜的观察者侧，以及布置在偏振膜的与偏振膜的观察者侧相对的一侧的压敏粘合剂层B; 其中，所述粘合剂层A为具有至少第一粘合剂层（a）和第二粘合剂层（b）的多层压敏粘合剂层，所述第二粘合剂层从所述最外层 压敏粘合剂层A的表面侧。

公开(公告)号：US20150376477A1

公开(公告)日：2015-12-31

申请号：US14767379

申请日：2014-01-28

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi Katami ,  Takahiro Nonaka ,  Hiroaki Kishioka

IPC: C09J133/14 ,  C08K5/3475 ,  G06F3/041 ,  C09J11/06

CPC classification number: C09J133/14 ,  B32B2457/202 ,  B32B2457/208 ,  C08K5/3472 ,  C08K5/3475 ,  C09J7/385 ,  C09J11/06 ,  C09J133/066 ,  C09J133/18 ,  C09J133/26 ,  C09J2203/318 ,  C09J2205/102 ,  C09J2400/163 ,  C09J2433/00 ,  G06F3/0412 ,  G06F3/0414 ,  G06F2203/04103 ,  Y10T428/1036 ,  Y10T428/105 ,  Y10T428/1059 ,  Y10T428/1077 ,  Y10T428/2887

Abstract: Provided are an optical component having an excellent corrosion inhibition effect while achieving a high level of adhesion reliability and transparency, and pressure-sensitive adhesive composition and sheet that can produce such an optical component efficiently at a low cost. The pressure-sensitive adhesive composition according to the present invention includes a rust inhibitor, and a mixture of at least one monomer component for constituting a base polymer or a partially polymerized product of a mixture of at least one monomer component for constituting a base polymer. The monomer component includes no or substantially no acid group-containing monomer. The pressure-sensitive adhesive composition contains no or substantially no organic solvent. The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive layer formed from such pressure-sensitive adhesive composition.

Abstract translation: 提供了具有优异的防腐蚀效果的光学部件，同时实现高水平的粘附可靠性和透明度，以及可以以低成本有效地生产这种光学部件的压敏粘合剂组合物和片材。 根据本发明的压敏粘合剂组合物包括防锈剂和至少一种用于构成基础聚合物的单体组分或至少一种用于构成基础聚合物的单体组分的混合物的部分聚合产物的混合物。 单体组分不包含或基本上不含有酸基的单体。 压敏粘合剂组合物不含或基本上不含有机溶剂。 压敏粘合片具有由这种压敏粘合剂组合物形成的粘合剂层。

公开(公告)号：US09175194B2

公开(公告)日：2015-11-03

申请号：US13759160

申请日：2013-02-05

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi Katami ,  Takahiro Nonaka

IPC: C09J133/14 ,  C09J133/06

CPC classification number: C09J133/14 ,  C08L33/08 ,  C09J133/066

Abstract: An acrylic pressure-sensitive adhesive tape including an acrylic pressure-sensitive adhesive layer, wherein a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to a glass plate is 10 N/20 mm or more and a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to an acrylic plate is 10 N/20 mm or more. The acrylic pressure-sensitive adhesive layer contains an acrylic polymer (A), has a gel fraction of 65% or more, and has a 300% tensile residual stress of from 7 to 16 N/cm2.

Abstract translation: 丙烯酸类压敏粘合带，其包含丙烯酸类压敏粘合剂层，其中丙烯酸类压敏粘合带与玻璃板的180°剥离粘合力为10N / 20mm以上180°剥离粘合力 的丙烯酸类压敏粘合带为丙烯酸板为10N / 20mm以上。 丙烯酸类压敏粘合剂层含有丙烯酸类聚合物（A），凝胶分数为65％以上，拉伸残余应力为300％，为7〜16N / cm 2。