公开(公告)号：US11221511B2

公开(公告)日：2022-01-11

申请号：US16499019

申请日：2018-03-28

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: G02F1/1335 ,  C09J133/08 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1333

Abstract: An in-cell type liquid crystal panel is disclosed including an in-cell type liquid crystal cell provided with a liquid crystal layer, a first transparent substrate and a second transparent substrate sandwiching the liquid crystal layer, and a touch sensing electrode unit related to a touch sensor and a touch-driven function between the first transparent substrate and the second transparent substrate and a pressure-sensitive adhesive layer attached polarizing film disposed, via a first adhesive layer and without interposing a conductive layer, to the first transparent substrate side on a viewing side of the in-cell type liquid crystal cell. The pressure-sensitive adhesive layer attached polarizing film comprises a surface treatment layer, a first polarizing film, and a first pressure-sensitive adhesive layer in this order, or comprises the surface treatment layer, the first polarizing film, an anchor layer, and the first pressure-sensitive adhesive layer in this order.

公开(公告)号：US20190338167A1

公开(公告)日：2019-11-07

申请号：US16314975

申请日：2017-07-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: C09J7/38 ,  G02F1/1333 ,  G02F1/1362 ,  C09J139/04 ,  C09J11/06

Abstract: A pressure-sensitive adhesive composition for an image display panel, a pressure-sensitive adhesive layer for an image display panel, and an optical film provided with a pressure-sensitive adhesive layer are disclosed which are free of problems regarding durability and defective appearance caused by an antistatic agent (conductive agent), and which have superior antistatic properties so as to be usable for applications such as in an image display panel. An image display panel is also disclosed in which the optical film provided with a pressure-sensitive adhesive layer is attached to the surface of the image display panel in contact with the pressure-sensitive adhesive layer without an interposed conductive layer, and a liquid crystal display device using the image display panel. Further, a liquid crystal display device is disclosed with a touch sensing function using the image display panel that can be used as various input display devices such as mobile devices.

公开(公告)号：US20180267351A1

公开(公告)日：2018-09-20

申请号：US15763913

申请日：2016-09-20

Applicant: NITTO DENKO CORPORATION

Inventor： Satoshi Yamamoto ,  Tomoyuki Kimura ,  Yusuke Toyama

IPC: G02F1/1333 ,  B32B7/12 ,  B32B27/30 ,  G06F3/041 ,  G02F1/1335

CPC classification number: G02F1/13338 ,  B32B7/12 ,  B32B27/30 ,  B32B27/308 ,  B32B2457/208 ,  G02B1/16 ,  G02F1/133528 ,  G02F2001/133562 ,  G02F2001/133567 ,  G02F2202/22 ,  G02F2202/28 ,  G06F3/0412

Abstract: Provided is a liquid crystal panel with touch sensing function that can satisfy a stable antistatic function even in a humidity environment. The liquid crystal panel incorporated with touch sensing function is a1 panel including a liquid crystal cell incorporated with touch sensing function, a first polarizing film arranged on a viewing side of the cell and a second polarizing film arranged on a side of the cell that is opposite to the viewing side, and a first pressure-sensitive adhesive layer arranged between the first polarizing film and the cell. In the panel, the first pressure-sensitive adhesive layer includes a pressure-sensitive-adhesive composition including a (meth) acrylic polymer (A) including, as monomer units thereof, an alkyl (meth) acrylate (a1) and an amide-group-containing monomer (a2), and an ionic compound (B). This panel is small in surface resistance value variation even in a humidity environment.

公开(公告)号：US11188177B2

公开(公告)日：2021-11-30

申请号：US16498708

申请日：2018-03-28

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G06F3/041 ,  G06F3/044

Abstract: An in-cell type liquid crystal panel is disclosed containing: an in-cell type liquid crystal cell provided with a liquid crystal layer including liquid crystal molecules homogeneously aligned in the absence of an electric field, a first transparent substrate and a second transparent substrate sandwiching the liquid crystal layer, and a touch sensing electrode unit related to touch sensor and touch-driven functions disposed between the first transparent substrate and the second transparent substrate; and a pressure-sensitive adhesive layer attached polarizing film disposed, via a first pressure-sensitive adhesive layer and without interposing a conductive layer, to the first transparent substrate side on the viewing side of the in-cell type liquid crystal cell; wherein the pressure-sensitive adhesive layer attached polarizing film contains a first polarizing film, an anchor layer, and a first pressure-sensitive adhesive layer; the anchor layer includes a conductive polymer; and the first pressure-sensitive adhesive layer includes an antistatic agent.

公开(公告)号：US11256129B2

公开(公告)日：2022-02-22

申请号：US16499019

申请日：2018-03-28

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: G02F1/1335 ,  C09J133/08 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1333

Abstract: An in-cell type liquid crystal panel is disclosed including an in-cell type liquid crystal cell provided with a liquid crystal layer, a first transparent substrate and a second transparent substrate sandwiching the liquid crystal layer, and a touch sensing electrode unit related to a touch sensor and a touch-driven function between the first transparent substrate and the second transparent substrate and a pressure-sensitive adhesive layer attached polarizing film disposed, via a first adhesive layer and without interposing a conductive layer, to the first transparent substrate side on a viewing side of the in-cell type liquid crystal cell. The pressure-sensitive adhesive layer attached polarizing film comprises a surface treatment layer, a first polarizing film, and a first pressure-sensitive adhesive layer in this order, or comprises the surface treatment layer, the first polarizing film, an anchor layer, and the first pressure-sensitive adhesive layer in this order.

公开(公告)号：US11216127B2

公开(公告)日：2022-01-04

申请号：US16498708

申请日：2018-03-28

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G06F3/041 ,  G06F3/044

Abstract: An in-cell type liquid crystal panel is disclosed containing: an in-cell type liquid crystal cell provided with a liquid crystal layer including liquid crystal molecules homogeneously aligned in the absence of an electric field, a first transparent substrate and a second transparent substrate sandwiching the liquid crystal layer, and a touch sensing electrode unit related to touch sensor and touch-driven functions disposed between the first transparent substrate and the second transparent substrate; and a pressure-sensitive adhesive layer attached polarizing film disposed, via a first pressure-sensitive adhesive layer and without interposing a conductive layer, to the first transparent substrate side on the viewing side of the in-cell type liquid crystal cell; wherein the pressure-sensitive adhesive layer attached polarizing film contains a first polarizing film, an anchor layer, and a first pressure-sensitive adhesive layer; the anchor layer includes a conductive polymer; and the first pressure-sensitive adhesive layer includes an antistatic agent.

公开(公告)号：US20170022396A1

公开(公告)日：2017-01-26

申请号：US15301194

申请日：2015-03-31

Applicant: NITTO DENKO CORPORATION

Inventor： Tomoyuki Kimura ,  Satoshi Yamamoto ,  Masakuni Fujita ,  Yuusuke Toyama

IPC: C09J7/02 ,  G02F1/1335 ,  B32B7/12 ,  C08J7/04 ,  C09J133/08

CPC classification number: G02F1/133528 ,  B32B5/022 ,  B32B5/028 ,  B32B5/18 ,  B32B7/06 ,  B32B7/12 ,  B32B9/045 ,  B32B15/04 ,  B32B27/08 ,  B32B27/28 ,  B32B27/281 ,  B32B27/286 ,  B32B27/302 ,  B32B27/304 ,  B32B27/306 ,  B32B27/308 ,  B32B27/32 ,  B32B27/325 ,  B32B27/36 ,  B32B27/365 ,  B32B27/40 ,  B32B29/00 ,  B32B2255/26 ,  B32B2270/00 ,  B32B2307/202 ,  B32B2307/306 ,  B32B2307/308 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2307/50 ,  B32B2307/516 ,  B32B2307/732 ,  B32B2457/202 ,  C08F220/18 ,  C08J7/047 ,  C08J2333/08 ,  C08K5/0075 ,  C09J7/22 ,  C09J7/38 ,  C09J133/066 ,  C09J133/08 ,  C09J133/26 ,  C09J171/00 ,  C09J2203/318 ,  C09J2205/102 ,  C09J2401/006 ,  C09J2433/00 ,  C09J2467/006 ,  G02F1/1333 ,  G02F1/13338 ,  G02F2001/133302 ,  G02F2202/28 ,  C08F2220/1825 ,  C08F2220/301 ,  C08F226/10 ,  C08F220/06 ,  C08F220/20

Abstract: A pressure-sensitive adhesive composition comprising: a (meth)acryl-based polymer comprising (a1) 70% by weight or more of a monomer unit derived from an alkyl (meth)acrylate, (a2) 3 to 25% by weight of a monomer unit derived from an aromatic ring-containing (meth)acrylate, (a3) 0.1 to 8% by weight of a monomer unit derived from an amide group-containing monomer, (a4) 0.01 to 2% by weight of a monomer unit derived from a carboxyl group-containing monomer, and (a5) 0.01 to 3% by weight of a monomer unit derived from a hydroxyl group-containing monomer, the (meth)acryl-based polymer having a weight average molecular weight (Mw) of 1,000,000 to 2,500,000 and a weight average molecular weight (Mw)/number average molecular weight (Mn) ratio of 1.8 to 10; and a crosslinking agent, the pressure-sensitive adhesive composition containing 0.01 to 3 parts by weight of the crosslinking agent based on 100 parts by weight of the (meth)acryl-based polymer.

Abstract translation: 一种压敏粘合剂组合物，其包含：（甲基）丙烯酸类聚合物，其包含（a1）70重量％以上的源自（甲基）丙烯酸烷基酯的单体单元，（a2）3〜25重量％ 衍生自含芳环的（甲基）丙烯酸酯的单体单元，（a3）0.1〜8重量％的衍生自含酰胺基的单体的单体单元，（a4）0.01〜2重量％的衍生自 （a5）0.01〜3重量％的衍生自含羟基单体的单体单元，所述（甲基）丙烯酸系聚合物的重均分子量（Mw）为1,000,000 至2,500,000，重均分子量（Mw）/数均分子量（Mn）比为1.8至10; 和交联剂，所述压敏粘合剂组合物基于100重量份的（甲基）丙烯酸类聚合物，含有0.01〜3重量份的交联剂。

公开(公告)号：US11008485B2

公开(公告)日：2021-05-18

申请号：US16314975

申请日：2017-07-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: C09J7/38 ,  C09J11/06 ,  C09J139/04 ,  G02F1/1333 ,  G02F1/1362 ,  G02F1/1335

Abstract: A pressure-sensitive adhesive composition for an image display panel, a pressure-sensitive adhesive layer for an image display panel, and an optical film provided with a pressure-sensitive adhesive layer are disclosed which are free of problems regarding durability and defective appearance caused by an antistatic agent (conductive agent), and which have superior antistatic properties so as to be usable for applications such as in an image display panel. An image display panel is also disclosed in which the optical film provided with a pressure-sensitive adhesive layer is attached to the surface of the image display panel in contact with the pressure-sensitive adhesive layer without an interposed conductive layer, and a liquid crystal display device using the image display panel. Further, a liquid crystal display device is disclosed with a touch sensing function using the image display panel that can be used as various input display devices such as mobile devices.

公开(公告)号：US20210284875A1

公开(公告)日：2021-09-16

申请号：US17245674

申请日：2021-04-30

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: C09J7/38 ,  C09J11/06 ,  C09J139/04 ,  G02F1/1333 ,  G02F1/1362

Abstract: A pressure-sensitive adhesive composition for an image display panel, a pressure-sensitive adhesive layer for an image display panel, and an optical film provided with a pressure-sensitive adhesive layer are disclosed which are free of problems regarding durability and defective appearance caused by an antistatic agent (conductive agent), and which have superior antistatic properties so as to be usable for applications such as in an image display panel. An image display panel is also disclosed in which the optical film provided with a pressure-sensitive adhesive layer is attached to the surface of the image display panel in contact with the pressure-sensitive adhesive layer without an interposed conductive layer, and a liquid crystal display device using the image display panel. Further, a liquid crystal display device is disclosed with a touch sensing function using the image display panel that can be used as various input display devices such as mobile devices.

公开(公告)号：US20210157186A1

公开(公告)日：2021-05-27

申请号：US16498708

申请日：2018-03-28

Applicant: NITTO DENKO CORPORATION

Inventor： Masakuni Fujita ,  Satoshi Yamamoto ,  Yusuke Toyama

IPC: G02F1/1333 ,  G02F1/1335 ,  G06F3/044 ,  G02F1/1343 ,  G06F3/041

Abstract: An in-cell type liquid crystal panel is disclosed containing: an in-cell type liquid crystal cell provided with a liquid crystal layer including liquid crystal molecules homogeneously aligned in the absence of an electric field, a first transparent substrate and a second transparent substrate sandwiching the liquid crystal layer, and a touch sensing electrode unit related to touch sensor and touch-driven functions disposed between the first transparent substrate and the second transparent substrate; and a pressure-sensitive adhesive layer attached polarizing film disposed, via a first pressure-sensitive adhesive layer and without interposing a conductive layer, to the first transparent substrate side on the viewing side of the in-cell type liquid crystal cell; wherein the pressure-sensitive adhesive layer attached polarizing film contains a first polarizing film, an anchor layer, and a first pressure-sensitive adhesive layer; the anchor layer includes a conductive polymer; and the first pressure-sensitive adhesive layer includes an antistatic agent.