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：US20130323437A1

公开(公告)日：2013-12-05

申请号：US13962086

申请日：2013-08-08

Applicant: NITTO DENKO CORPORATION

Inventor： Tomohide Banba ,  Hiroaki Kishioka ,  Takahiro Nonaka ,  Masatomo Natsui ,  Hiroaki Fumoto ,  Shou Takarada ,  Takashi Suzuki

IPC: C09J133/14 ,  C09J133/08

CPC classification number: C09J133/14 ,  B32B2457/202 ,  B32B2457/208 ,  C09J7/10 ,  C09J7/385 ,  C09J133/066 ,  C09J133/08 ,  C09J2203/318 ,  C09J2433/00 ,  G06F3/044 ,  Y10T428/1059 ,  Y10T428/1077 ,  Y10T428/24479 ,  Y10T428/28 ,  Y10T428/2891

Abstract: Provided is a pressure-sensitive adhesive sheet for optical use which less suffers from a misoperation-causing change in capacitance upon application to an optical member.The pressure-sensitive adhesive sheet for optical use includes a pressure-sensitive adhesive layer and has a dielectric constant of from 2 to 8 at a frequency of 1 MHz and a dielectric loss tangent of more than 0 and 0.2 or less at a frequency of 1 MHz. The pressure-sensitive adhesive sheet for optical use preferably has a dielectric constant at a frequency of 1.0×106 Hz being 60% or more of that at a frequency of 1.0×104 Hz. In addition, the pressure-sensitive adhesive sheet for optical use preferably has an absolute value of difference between the dielectric loss tangent at a frequency of 1.0×106 Hz and that at a frequency of 1.0×104 Hz of 0.15 or less.

Abstract translation: 本发明提供一种光学用粘合片，其在光学构件的应用时容易产生误动作变化。 用于光学用途的压敏粘合片包括压敏粘合剂层，并且在1MHz的频率下的介电常数为2〜8，频率为1的介电损耗角正切大于0且为0.2以下 MHz。 用于光学用途的粘合片优选具有在1.0×106Hz的频率下的介电常数为1.0×104Hz频率的60％以上。 此外，用于光学用途的粘合片优选具有在1.0×106Hz的频率下的介电损耗角正切与1.0×104Hz的频率之间的绝对值为0.15或更小的绝对值。

公开(公告)号：US20130123417A1

公开(公告)日：2013-05-16

申请号：US13673172

申请日：2012-11-09

Applicant: NITTO DENKO CORPORATION

Inventor： Shou Takarada ,  Takahiro Nonaka

IPC: C09J133/08

CPC classification number: C09J133/08 ,  C09J133/066 ,  C09J139/06

Abstract: A pressure-sensitive adhesive sheet excellent in the resistance to clouding caused by humidification, and excellent in the level difference absorbability, in particular, in the level difference absorbability for a high level difference is provided. The pressure-sensitive adhesive sheet of the present invention is a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer includes an acrylic polymer obtained by polymerizing monomer components; the monomer components includes alkyl (meth)acrylate having a linear or branched alkyl group having 10 to 16 carbon atoms and a hydrophilic monomer; the content of the alkyl (meth)acrylate is 30% by weight or more in relation to the total amount (100% by weight) of the monomers; and the content of the hydrophilic monomer is 10% by weight or more in relation to the total amount (100% by weight) of the monomers.

Abstract translation: 提供了由加湿引起的耐混浊性优异的水平差吸收性，特别是高水平差的水平差吸收性优异的压敏粘合片。 本发明的压敏粘合片是包含压敏粘合剂层的压敏粘合片，其中压敏粘合剂层包括通过聚合单体组分而获得的丙烯酸类聚合物; 单体组分包括具有10至16个碳原子的直链或支链烷基和亲水单体的（甲基）丙烯酸烷基酯; （甲基）丙烯酸烷基酯的含量相对于单体的总量（100重量％）为30重量％以上; 相对于单体的总量（100重量％），亲水性单体的含量为10重量％以上。