公开(公告)号：US20180022962A1

公开(公告)日：2018-01-25

申请号：US15545124

申请日：2016-07-11

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi KATAMI ,  Toru UMEMOTO ,  Hiroyuki TAKAO ,  Atsushi YASUI

IPC: C09J7/02

CPC classification number: C09J7/385 ,  B05D1/28 ,  B32B7/02 ,  B32B7/12 ,  C08K2003/2206 ,  C08K2003/2213 ,  C08K2003/2227 ,  C08K2003/2231 ,  C08K2003/2237 ,  C08K2003/2244 ,  C08K2003/2258 ,  C09J7/24 ,  C09J201/00 ,  C09J2201/128 ,  C09J2201/36 ,  C09J2201/602 ,  C09J2201/606 ,  C09J2203/318 ,  C09J2205/102 ,  C09J2423/006 ,  C23C14/086

Abstract: As one sensor layer structure for a capacitive touch panel, a layer structure in which a transparent electroconductive layer is formed on each of opposite surfaces of a single film substrate, so-called GFD structure, is used. In the structure, for sufficiently suppressing internal reflection from the transparent electroconductive layer, it is necessary to employ a technique of forming one or more refractive index adjustment (IM) layers on each of the opposite surfaces of the single film substrate. This causes a problem that production yield is likely to deteriorate, and a production cost is increased. The present invention is directed to solving such a problem and, specifically, to laminating a refractive index adjustment zone-formed pressure-sensitive adhesive layer capable of being produced easily and at low cost, to each transparent electroconductive layer of a double-sided transparent electroconductive film, so as to effectively suppress internal reflection in the resulting laminate.

公开(公告)号：US20170368786A1

公开(公告)日：2017-12-28

申请号：US15543211

申请日：2016-07-11

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi KATAMI ,  Atsushi YASUI

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

CPC classification number: B32B3/26 ,  B32B7/02 ,  B32B2307/418 ,  B32B2307/50 ,  C01B11/00 ,  C09F9/00 ,  C09J7/00 ,  C09J7/38 ,  C09J201/00 ,  C09J2201/36 ,  C09J2201/602 ,  C09J2203/318 ,  C09J2400/143 ,  C09J2423/006 ,  C09J2433/00 ,  C09J2467/006 ,  C09J2469/006 ,  G02B1/00 ,  G02B1/111 ,  G06F3/041 ,  G09F9/00 ,  H01J37/26

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：US20170361568A1

公开(公告)日：2017-12-21

申请号：US15545069

申请日：2016-07-11

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi KATAMI ,  Toru UMEMOTO ,  Hiroyuki TAKAO ,  Atsushi YASUI

IPC: B32B7/02 ,  H01B5/14 ,  C09J7/02 ,  B32B17/10 ,  B32B7/12 ,  H01B1/08

CPC classification number: B32B7/02 ,  B32B7/12 ,  B32B17/1055 ,  B32B2307/202 ,  B32B2307/412 ,  B32B2315/08 ,  B32B2386/00 ,  B32B2457/208 ,  G02B5/0215 ,  G02B5/0242 ,  H01B1/08 ,  H01B5/14

Abstract: In the case where a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive layer having a refractive index adjustment zone is provided in such a manner that two PET separators are laminated to opposite surfaces of the pressure-sensitive adhesive layer, it is difficult to distinguish between obverse and reverse sides of the pressure-sensitive adhesive sheet itself. The present invention is directed to solving the above problems and, specifically, to offering a pressure-sensitive adhesive sheet having a refractive index adjustment zone capable of being easily produced at low cost, in a state in which it is preliminarily laminated with a substrate provided with an electroconductive layer, thereby making it possible to resolve complexity in handling (to easily distinguish between one surface defined by the refractive index adjustment zone and the other surface defined by the remaining zone).

公开(公告)号：US20170101553A1

公开(公告)日：2017-04-13

申请号：US15287921

申请日：2016-10-07

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Eiko SUEFUSA ,  Atsushi YASUI ,  Ryohei SAWAZAKI

IPC: C09J7/02 ,  H01L27/32 ,  G02F1/1335 ,  C09J133/06

CPC classification number: C09J133/062 ,  B29D11/00644 ,  B29D11/0073 ,  B32B2457/20 ,  B32B2457/202 ,  C08F220/18 ,  C09J4/06 ,  C09J7/22 ,  C09J7/38 ,  C09J133/08 ,  C09J133/10 ,  C09J133/12 ,  C09J133/14 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2205/114 ,  C09J2429/006 ,  C09J2433/00 ,  G02B5/3033 ,  G02F1/133528 ,  G02F2001/133311 ,  G02F2001/133331 ,  G02F2201/50 ,  G02F2202/28 ,  H01L27/3232 ,  Y10T428/1036 ,  Y10T428/1041 ,  Y10T428/105 ,  Y10T428/1059 ,  Y10T428/1077 ,  Y10T428/1082 ,  C08F2220/1858 ,  C08F2220/1891 ,  C08F220/20 ,  C08F226/10 ,  C08F220/06 ,  C08F2220/1825 ,  C08K5/5435

Abstract: The pressure sensitive adhesive sheet has a thickness of D, a water-vapor permeability of X, and a moisture content of Y. XD2 is 2.7×10−6 g/24 h or more and Y/D is 47 m−1 or less. A base polymer of a pressure sensitive adhesive composition that forms the pressure sensitive adhesive sheet is substantially free from an organic acid monomer component as monomer units. The pressure sensitive adhesive sheet is suitably used for bonding a polarizing plate to a transparent member disposed on a viewing-side of an image display device.

公开(公告)号：US20160161652A1

公开(公告)日：2016-06-09

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: G02B5/30 ,  C09J7/02 ,  C09J5/06 ,  G02B1/14 ,  G02F1/1335

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.

Abstract translation: 本发明提供一种分离器粘合层结构，其具有相对于粘合剂层具有适度的光剥离性的隔膜，并表现出优异的加工性和耐久性及其制造方法。 该制造方法包括：在经过剥离处理的隔膜的剥离处理面上形成含有（甲基）丙烯酸类聚合物，过氧化物和酚类抗氧化剂的粘合剂组合物层的第一工序; 以及第二步骤，在第一步骤完成之后，加热粘合剂组合物以使其交联以形成粘合剂层。

公开(公告)号：US20160115357A1

公开(公告)日：2016-04-28

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 ,  C08K3/22

CPC classification number: C09J7/0285 ,  C08K3/22 ,  C08K7/18 ,  C08K2003/2241 ,  C08K2003/2244 ,  C08K2201/005 ,  C09J7/20 ,  C09J7/22 ,  C09J7/241 ,  C09J7/255 ,  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.

Abstract translation: 压敏粘合片包括载体和载体上的透明压敏粘合剂层。 压敏粘合剂层包括基本上由透明基底粘合剂材料制成的基底粘合剂区，并且在压敏粘合剂的厚度方向上从压敏粘合剂层的第一主表面在给定范围内形成 层，以及在厚度方向上从压敏粘合剂层的第二主表面在给定范围内形成的透明粘附的折射率调节区，并且其中折射率调节区的折射率大于 基础粘合剂材料的折射率。

公开(公告)号：US20220169002A1

公开(公告)日：2022-06-02

申请号：US17432345

申请日：2020-02-14

Applicant: NITTO DENKO CORPORATION ,  KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION

Inventor： Satoshi HONDA ,  Naofumi KOSAKA ,  Shotaro MASUDA ,  Atsushi YASUI ,  Hiroki AGO ,  Kenji KAWAHARA ,  Shun OYAMA

IPC: B32B37/12 ,  B32B7/12

Abstract: The present invention relates to a laminate including a two-dimensional material and an adhesive sheet having a base material and an adhesive layer whose adhesive force decreases due to ultraviolet rays or heat, in which an adhesive force A at 25° C. of the adhesive layer before the ultraviolet rays or heat applies, to a silicon wafer is 1.0 N/20 mm to 20.0 N/20 mm when the adhesive layer is subjected to 180° peeling at a tensile speed of 300 mm/min, and a surface roughness of an adhesive surface of the adhesive layer after the ultraviolet rays or heat has been applied is 0.01 μm to 8.00 μm.

公开(公告)号：US20220153921A1

公开(公告)日：2022-05-19

申请号：US17599303

申请日：2020-03-17

Applicant: NITTO DENKO CORPORATION

Inventor： Ayumi NITTA ,  Akiko TANAKA ,  Atsushi YASUI

IPC: C08G59/50 ,  C09J5/06 ,  C09J163/00

Abstract: The invention relates to a resin composition containing an epoxy resin and a latent curing agent in which the epoxy resin contains an aliphatic epoxy resin containing a hydroxyl group and having a water dissolution rate of 65% or more and in which the latent curing agent has a reaction initiation temperature of 45° C. or higher and 120° C. or lower.

公开(公告)号：US20180319127A1

公开(公告)日：2018-11-08

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 ,  C09J7/20 ,  G02B5/30 ,  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：US20160109631A1

公开(公告)日：2016-04-21

申请号：US14876946

申请日：2015-10-07

Applicant: NITTO DENKO CORPORATION

Inventor： Masaki MIZUTANI ,  Shou TAKARADA ,  Atsushi YASUI

IPC: G02B5/30 ,  C09J7/02

CPC classification number: G02B5/3033 ,  C09J7/38 ,  C09J7/405 ,  C09J2201/134 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2467/006

Abstract: The optical film with a pressure sensitive adhesive on both sides includes a first pressure sensitive adhesive layer having a thickness of 3 μm to 30 μm on first main surface of an optical film, and a second pressure sensitive adhesive layer having a thickness of 50 μm or more on second main surface of the optical film. A first protective sheet and a second protective sheet are releasably attached on the first pressure sensitive adhesive layer and the second pressure sensitive adhesive layer, respectively. The residual stress of the second pressure sensitive adhesive layer S2 (N/cm2), the thickness of the first protective sheet Y (μm); and the thickness of the second protective sheet Z (μm) satisfy the following relationship: 20≦Y≦80; 45≦Z; and Y+0.17 Z+10.6 S2≧63.

Abstract translation: 具有两面的压敏粘合剂的光学膜包括在光学膜的第一主表面上具有3μm至30μm的厚度的第一压敏粘合剂层和厚度为50μm的第二压敏粘合剂层或 更多在光学膜的第二主表面上。 第一保护片和第二保护片分别可剥离地附接在第一压敏粘合剂层和第二压敏粘合剂层上。 第二压敏粘合剂层S2的残余应力（N / cm 2），第一保护片Y的厚度（μm）; 并且第二保护片Z（μm）的厚度满足以下关系：20＆nlE; Y＆nlE; 80; 45＆nlE; Z; Y + 0.17Z +10.6S2≥63。