公开(公告)号：US20210230458A1

公开(公告)日：2021-07-29

申请号：US15733810

申请日：2019-05-28

Applicant: NITTO DENKO CORPORATION

Inventor： Yoshiko KIRA ,  Kensuke TANI ,  Atsushi YASUI

IPC: C09J11/08 ,  C09J7/40 ,  C09J7/38 ,  C09J7/32 ,  C09J123/22

Abstract: The present invention relates to an adhesive sheet including an adhesive layer comprising an adhesive composition containing a base polymer and a moisture-curable component, wherein an adhesive surface is peelably covered with a layer having moisture permeability of 5 g/m2·24 hrs or less.

公开(公告)号：US20160209566A1

公开(公告)日：2016-07-21

申请号：US15000322

申请日：2016-01-19

Applicant: NITTO DENKO CORPORATION

Inventor： Atsushi YASUI ,  Shou TAKARADA ,  Masaki MIZUTANI ,  Hirofumi KATAMI ,  Shinya YAMAMOTO

IPC: G02B5/30 ,  G02F1/1335

CPC classification number: G02B5/3033 ,  G02F1/133528 ,  G02F2202/28

Abstract: A double-sided pressure-sensitive-adhesive-layer-attached polarizing film which is good in yield ratio, and satisfies step-absorbing capability provided that the film is a double-sided pressure-sensitive-adhesive-layer-attached polarizing film having a pressure-sensitive adhesive layer on each of the two surfaces of 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, and having the structure and properties as described.

Abstract translation: 具有良好的屈服比，并且满足阶段吸收能力的双面压敏粘合剂层附着偏光膜，只要该膜是双面粘合剂粘合剂层的偏振膜，其具有 在装置中使用的至少一个偏振膜中，最靠近图像显示装置的观察者侧的偏振膜的两个表面的每个表面上具有压敏粘合剂层，并且具有如上所述的结构和性质。

公开(公告)号：US20160102229A1

公开(公告)日：2016-04-14

申请号：US14876948

申请日：2015-10-07

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Masaki MIZUTANI ,  Atsushi YASUI

IPC: C09J7/02 ,  B32B37/12 ,  B32B37/14 ,  C09J133/08

CPC classification number: C09J133/08 ,  B32B37/003 ,  B32B37/182 ,  B32B2037/1253 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2457/20 ,  C09J7/22 ,  C09J7/38 ,  C09J133/066 ,  C09J2201/134 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2433/00

Abstract: The optical film with a pressure sensitive adhesive comprises an optical film including a polarizing plate, a first pressure sensitive adhesive layer provided on first main surface of the optical film, and a second pressure sensitive adhesive layer provided on second main surface of the optical film. The first pressure sensitive adhesive layer has a thickness of 30 μm or more. In the first pressure sensitive adhesive layer, a fluidity of a pressure sensitive adhesive at an end surface is lower than a fluidity of the pressure sensitive adhesive at an in-plane central part.

Abstract translation: 具有压敏粘合剂的光学膜包括光学膜，该光学膜包括偏光板，设置在光学膜的第一主表面上的第一压敏粘合剂层和设置在光学膜的第二主表面上的第二压敏粘合剂层。 第一压敏粘合剂层的厚度为30μm以上。 在第一压敏粘合剂层中，端面处的压敏粘合剂的流动性低于平面中心部分处的压敏粘合剂的流动性。

公开(公告)号：US20180134922A1

公开(公告)日：2018-05-17

申请号：US15569202

申请日：2016-07-20

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi KATAMI ,  Atsushi YASUI

IPC: C09J7/38 ,  H01L51/52 ,  G02B5/30 ,  B32B7/12 ,  B32B7/02

CPC classification number: C09J7/381 ,  B32B7/02 ,  B32B7/12 ,  C08K3/22 ,  C09J7/38 ,  C09J11/04 ,  C09J11/08 ,  C09J201/00 ,  C09J2203/318 ,  C09J2205/102 ,  C09J2433/00 ,  G02B5/3033 ,  G02B5/3083 ,  G02F1/133502 ,  G02F2202/28 ,  H01L51/5246 ,  H01L51/5253 ,  H01L51/5281

Abstract: Provided is a polarizing film laminate comprising: an element substrate; a polarizer; a transparent electroconductive layer patterned so as to function as a touch sensor; and a pressure-sensitive adhesive layer, 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 the adhesive layer in a thickness direction of the adhesive layer; and a refractive index adjustment zone formed over a given range from the adhesive layer in the thickness direction and comprising the base adhesive material and material infiltrated into the base adhesive material and different from the base adhesive material, the refractive index adjustment zone having an average refractive index greater than a refractive index of the base adhesive material, and wherein the base adhesive material zone of the adhesive layer is located on the side of the element substrate.

公开(公告)号：US20180051191A1

公开(公告)日：2018-02-22

申请号：US15552706

申请日：2016-07-11

Applicant: NITTO DENKO CORPORATION

Inventor： Hirofumi KATAMI ,  Atsushi YASUI

IPC: C09J7/02 ,  B32B7/12 ,  B32B7/02 ,  C08K3/22 ,  C03C27/10 ,  G06F3/041

CPC classification number: B32B7/12 ,  B32B7/02 ,  B32B27/00 ,  B32B2307/418 ,  C03C27/10 ,  C08K3/22 ,  C08K2201/002 ,  C09J7/10 ,  C09J201/00 ,  C09J2201/134 ,  C09J2201/606 ,  C09J2203/318 ,  C09J2205/102 ,  G02F2202/28 ,  G06F3/041

Abstract: The present invention provides a 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 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 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：US20160237319A1

公开(公告)日：2016-08-18

申请号：US15042690

申请日：2016-02-12

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Masaki MIZUTANI ,  Atsushi YASUI ,  Shinya YAMAMOTO

IPC: C09J7/02 ,  B32B27/26 ,  B32B27/30 ,  G02B5/30 ,  B32B27/08

CPC classification number: B32B27/08 ,  B32B7/02 ,  B32B7/06 ,  B32B7/12 ,  B32B27/308 ,  B32B27/32 ,  B32B27/36 ,  B32B2250/24 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2270/00 ,  B32B2307/4026 ,  B32B2307/42 ,  B32B2307/51 ,  B32B2307/514 ,  B32B2307/7145 ,  B32B2307/732 ,  B32B2307/748 ,  B32B2457/00 ,  B32B2457/208 ,  B32B2551/00 ,  C09D123/06 ,  C09J7/385 ,  C09J133/08 ,  C09J2201/36 ,  C09J2203/318 ,  G02B5/3025

Abstract: The optical film with pressure sensitive adhesive comprises an optical film and a front-side pressure sensitive adhesive sheet. The front-side pressure sensitive adhesive sheet is a laminated pressure sensitive adhesive sheet and includes a first pressure sensitive adhesive layer disposed in contact with the optical film, and a second pressure sensitive adhesive layer disposed at the furthest from the optical film. The first pressure sensitive adhesive layer has a storage elastic modulus of 9×103 Pa or less at 150° C., and a ratio G′20/G′150 of 20 or more, where G′20 is a storage elastic modulus at 20° C. and G′150 is a storage elastic modulus at 150° C. The second pressure sensitive adhesive layer has a storage elastic modulus of 4×105 Pa or less at 20° C., and a storage elastic modulus of 1×104 Pa or more at 150° C.

Abstract translation: 具有压敏粘合剂的光学膜包括光学膜和前侧压敏粘合片。 前侧压敏粘合片是层叠压敏粘合片，并且包括与光学膜接触设置的第一压敏粘合剂层和设置在距离光学膜最远的第二压敏粘合剂层。 第一压敏粘合剂层在150℃下的储能弹性模量为9×10 3 Pa以下，G'20 / G'150为20以上，G'20为20时的储能弹性模量 ℃，G'150是150℃下的储能弹性模量。第二压敏粘合剂层在20℃下的储能弹性模量为4×10 5 Pa以下，储存弹性模量为1×10 4 Pa以上150℃

公开(公告)号：US20220186083A1

公开(公告)日：2022-06-16

申请号：US17599187

申请日：2020-03-17

Applicant: NITTO DENKO CORPORATION

Inventor： Akiko TANAKA ,  Ayumi NITTA ,  Atsushi YASUI

IPC: C09J7/30 ,  C09J11/08 ,  C09J7/10

Abstract: The invention relates to a curable adhesive sheet which has an adhesive layer formed from an adhesive composition containing an epoxy resin, a latent curing agent and a gelling agent 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：US20170276851A1

公开(公告)日：2017-09-28

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

CPC classification number: G02B5/3041 ,  C08G2170/40

Abstract: Provided is 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 of the present invention 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：US20160355704A1

公开(公告)日：2016-12-08

申请号：US15172462

申请日：2016-06-03

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Atsushi YASUI

IPC: C09J7/02 ,  B32B37/12 ,  B32B38/10 ,  C09J5/06 ,  G02B5/30

CPC classification number: B32B37/12 ,  B32B37/0007 ,  B32B37/0015 ,  B32B38/10 ,  B32B2038/0076 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2309/105 ,  B32B2457/208 ,  C09J7/38 ,  C09J7/40 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2205/31 ,  C09J2433/00 ,  G02B5/3033

Abstract: A pressure sensitive adhesive sheet and an optical film with a pressure sensitive adhesive are disclosed. The pressure sensitive adhesive sheet comprises a first pressure sensitive adhesive layer and a first protective sheet releasably attached to one surface of the first pressure sensitive adhesive layer. The first pressure sensitive adhesive layer contains an ultraviolet curable pressure sensitive adhesive. The first protective sheet has a transmittance of 1% or less to an ultraviolet ray with a wavelength of 360 nm.

Abstract translation: 公开了一种压敏粘合片和具有压敏粘合剂的光学膜。 压敏粘合片包括第一压敏粘合剂层和可释放地附着到第一压敏粘合剂层的一个表面上的第一保护片。 第一压敏粘合剂层含有紫外线固化压敏粘合剂。 第一保护片对于波长为360nm的紫外线具有1％以下的透射率。

公开(公告)号：US20160084991A1

公开(公告)日：2016-03-24

申请号：US14891492

申请日：2015-01-16

Applicant: NITTO DENKO CORPORATION

Inventor： Toru UMEMOTO ,  Hirofumi KATAMI ,  Hiroyuki TAKAO ,  Takahiro NONAKA ,  Atsushi YASUI ,  Takami HIKITA

IPC: G02B1/111 ,  B32B7/02 ,  B32B37/12 ,  B32B7/12

Abstract: A laminate of optical elements comprises a transparent first optical element, a second optical element, and a transparent pressure-sensitive adhesive layer for bonding the first optical element to the second optical element. The pressure-sensitive adhesive layer comprises a base adhesive zone, a transparent refractive index-adjusting zone. The base adhesive zone is 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 facing the first optical element, in a thickness direction of the pressure-sensitive adhesive layer. The a transparent, adherent, refractive index-adjusting zone is formed over a given range from a second principal surface of the pressure-sensitive adhesive layer facing the second optical element.

Abstract translation: 光学元件的层叠体包括透明第一光学元件，第二光学元件和用于将第一光学元件接合到第二光学元件的透明压敏粘合剂层。 压敏粘合剂层包括基底粘合区域，透明折射率调节区域。 基底粘合剂区域基本上由透明基底压敏粘合剂材料制成，并且在压敏粘合剂层的面向第一光学元件的第一主表面的给定范围内，在压敏粘合剂的厚度方向上形成 层。 透明粘附的折射率调节区形成在与第二光学元件相对的压敏粘合剂层的第二主表面的给定范围内。