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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.
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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.
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公开(公告)号：US20210048567A1
公开(公告)日：2021-02-18
申请号：US17043276
申请日：2019-03-25
Applicant: NITTO DENKO CORPORATION
Inventor： Tomoyuki Kimura , Yusuke Toyama , Eiko Suefusa
Abstract: A pressure-sensitive-adhesive-layer-attached polarizing film is disclosed having an odd shape, and capable of reducing occurrence of a crack in a polarizer and preventing peeling and foaming of a pressure-sensitive adhesive layer and warpage of a polarizing film. This pressure-sensitive-adhesive-layer-attached polarizing film comprises a polarizing film, and a pressure-sensitive adhesive layer on one surface of the polarizing film. The pressure-sensitive-adhesive-layer-attached polarizing film has an odd shape other than a rectangular shape, and when a strain gauge is attached to a surface not having the pressure-sensitive adhesive layer of the polarizing film such that a measurement axis and an absorption axis of the polarizing film intersect at right angles and strain amounts are measured, a difference between a strain amount at −40° C. and a strain amount at 85° C. is 3000 με or less, and the creep value of the pressure-sensitive adhesive layer at 85° C. is 15-600 μm inclusive.
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公开(公告)号：US10578778B2
公开(公告)日：2020-03-03
申请号：US16179835
申请日：2018-11-02
Applicant: NITTO DENKO CORPORATION
Inventor： Yu Morimoto , Yusuke Toyama , Takaaki Ishii , Kazuo Kitada , Satoshi Hashimoto , Akihiro Nagura
IPC: G02B1/16 , B32B27/00 , G02F1/1335 , G02B1/14 , B32B7/02 , C08J7/04 , G02B5/30 , B32B7/12 , G02F1/13
Abstract: A continuous web of optical film laminate comprising, an optical film comprising a first substrate and an adhesive layer on the first substrate, a releasable film comprising a second substrate and a releasably treated layer on the second substrate, the releasably treated layer being in contact with the adhesive layer, a first conductive layer between the first substrate and the adhesive layer, and a second conductive layer between the second substrate and the releasably treated layer. The first conductive layer and the second conductive layer comprise a static electrification prevention material, such that the optical film with the first conductive layer, and the releasable film with the second conductive layer, both have a sheet resistance of 1012 Ω/sq or less.
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公开(公告)号：US20200032113A1
公开(公告)日：2020-01-30
申请号：US16337044
申请日：2017-09-27
Applicant: NITTO DENKO CORPORATION
Inventor： Tomoyuki Kimura , Hirotomo Ono , Akiko Sugino , Yusuke Toyama
IPC: C09J7/38 , C09J133/24 , C09J133/06 , G02F1/1339 , G02F1/1337
Abstract: The purpose of the present invention is to provide an optical pressure-sensitive adhesive layer which is excellent in durability such that foaming, peeling, etc. does not occur under heating/humidification conditions on an adherend and does not cause light leakage even in a narrow frame panel; a pressure-sensitive adhesive layer attached optical film, having the aforementioned optical pressure-sensitive adhesive layer on at least one surface of the optical film; and further a liquid crystal display device using the aforementioned pressure-sensitive adhesive layer attached optical film. 1. An optical pressure-sensitive adhesive layer which is formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer, wherein the optical pressure-sensitive adhesive layer has a gel fraction exceeding 90% and a weight average molecular weight (Mw) of 350,000 or more of a sol component.
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Patent Agency Ranking
公开(公告)号：US20190218427A1
公开(公告)日：2019-07-18
申请号：US16337108
申请日：2017-09-27
Applicant: NITTO DENKO CORPORATION
Inventor： Mizue Yamasaki , Yusuke Toyama
IPC: C09J7/38 , C09J11/06 , C09J133/14 , G02F1/1335
CPC classification number: C09J7/385 , C08K5/14 , C08K5/29 , C09J11/06 , C09J133/14 , C09J175/04 , G02B5/30 , G02F1/1335 , G02F1/133528
Abstract: Provided are: a highly durable pressure-sensitive adhesive layer which does not cause foaming or peeling even in a wet heat environment; and a pressure-sensitive adhesive composition which is capable of restraining an increase in the surface resistance of the pressure-sensitive adhesive layer and capable of forming a pressure-sensitive adhesive layer restraining corrosion of a transparent conductive layer. The pressure-sensitive adhesive composition includes a (meth)acrylic polymer; and an ionic compound having an anionic component and a cationic component, wherein the (meth)acrylic polymer includes 0.6% or more by weight of a nitrogen-containing monomer as a monomer unit, a total number of carbon atoms in the anionic component is 4 or more, and the anionic component is represented by at least one selected from (CnF2n+1SO2)2N− wherein n is an integer from 2 to 10, and CF2(CmF2mSO2)2N− wherein m is an integer from 2 to 10.
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公开(公告)号：US20180086955A1
公开(公告)日：2018-03-29
申请号：US15708461
申请日：2017-09-19
Applicant: NITTO DENKO CORPORATION
Inventor： Masakuni Fujita , Yusuke Toyama , Yu Morimoto
IPC: C09J133/08 , C09J7/02 , G02F1/1347 , G02F1/1333
CPC classification number: C09J133/08 , C08F220/06 , C08F226/08 , C08K5/548 , C08L2312/08 , C09J7/385 , C09J133/10 , C09J2203/318 , C09J2205/102 , G02B5/3033 , G02F1/133371 , G02F1/133528 , G02F1/13471 , G02F2202/28 , C08F2220/1825 , C08F220/20
Abstract: A pressure-sensitive-adhesive-layer-attached polarizing film of the present invention includes a pressure-sensitive adhesive layer and a polarizing film, and is used, together with a transparent conductive substrate having a transparent conductive layer and a transparent substrate, in the state of being bonded to the transparent conductive layer, wherein a pressure-sensitive adhesive composition for forming the pressure-sensitive adhesive layer includes a (meth)acryl-based polymer and a thiol-group-containing silane coupling agent. The pressure-sensitive-adhesive-layer-attached polarizing film has a pressure-sensitive adhesive layer, having a high endurance even in the case of being bonded to a transparent conductive substrate having a transparent conductive layer and a transparent substrate, in particular, having an excellent endurance in a humidified environment and an excellent re-workability even in the same case, attached to a polarizing film.
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公开(公告)号：US20220057557A1
公开(公告)日：2022-02-24
申请号：US17414048
申请日：2019-09-12
Applicant: NITTO DENKO CORPORATION
Inventor： Masato Fujita , Tomoyuki Kimura , Yusuke Toyama
Abstract: A pressure-sensitive adhesive layer attached optical film is disclosed, including a one-side-protected polarizing film including a thin polarizer and a transparent protective film (excluding a retardation film) on one surface of the polarizer, and the pressure-sensitive adhesive layer is provided on a side of the one-side-protected polarizing film on which the transparent protective film is not provided, and the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive composition including a (meth)acrylic polymer (A) containing 80 mass % or more of a prescribed monomer (a) as a monofunctional monomer unit and 20 mass % or more of n-butyl acrylate or 70 mass % or more of an alkoxyalkyl (meth)acrylate are contained as the prescribed monomer (a), and a silane coupling agent (B), not containing polyether compound having a polyether skeleton and a reactive silyl group.
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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.
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公开(公告)号：US20210103173A1
公开(公告)日：2021-04-08
申请号：US16498025
申请日：2018-03-28
Applicant: NITTO DENKO CORPORATION
Inventor： Masakuni Fujita , Yusuke Toyama
IPC: G02F1/1333 , G02F1/1335 , G02F1/1343 , G02F1/1337 , 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 which are homogeneously aligned in the absence of an electric field, a first transparent substrate and a second transparent substrate sandwiching the liquid crystal layer from both sides, 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 that is disposed, via a first 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. The pressure-sensitive adhesive layer attached polarizing film contains a surface treatment layer, a first polarizing film, and the first pressure-sensitive adhesive layer in this order.
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