Patents by Inventor Yusuke Toyama
Yusuke Toyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230072725Abstract: A polarizing film having a pressure-sensitive adhesive layer, said polarizing film comprising a polarizer film and a first transparent protective film, wherein a first pressure-sensitive adhesive layer is provided on the first transparent protective film side of the polarizing film. The polarizer film has a film thickness of 20 ?m or less; the first pressure-sensitive adhesive layer is used for the bonding of a front transparent member that is arranged at the viewing side of an image display device, while having a difference between the saturation moisture percentage (A) at 80° C. at 85% R.H. and the saturation moisture percentage (B) at 25° C. at 50% R.H., namely ((A)?(B)) of 1.0% by weight or more. This polarizing film having a pressure-sensitive adhesive layer is able to suppress decrease in the single transmittance of the polarizing film in a high temperature environment.Type: ApplicationFiled: February 4, 2021Publication date: March 9, 2023Applicant: NITTO DENKO CORPORATIONInventors: Shinya YAMAMOTO, Tomohiro YAMASHITA, Sho TAKARADA, Takahiro NONAKA, Katsunori TAKADA, Yusuke TOYAMA
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Publication number: 20220057557Abstract: 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.Type: ApplicationFiled: September 12, 2019Publication date: February 24, 2022Applicant: NITTO DENKO CORPORATIONInventors: Masato Fujita, Tomoyuki Kimura, Yusuke Toyama
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Publication number: 20220057847Abstract: An image display panel is disclosed with a bezel including an image display unit and a polarizing film provided on a viewing side of the image display unit via a pressure-sensitive adhesive layer; and a narrow-frame external bezel provided via an elastic intermediate layer, wherein a distance from the viewing-side outermost surface of the image display panel to the pressure-sensitive adhesive layer is 75 ?m or more, 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.Type: ApplicationFiled: September 12, 2019Publication date: February 24, 2022Applicant: NITTO DENKO CORPORATIONInventors: Masato Fujita, Tomoyuki Kimura, Yusuke Toyama
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Patent number: 11256129Abstract: 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.Type: GrantFiled: March 28, 2018Date of Patent: February 22, 2022Assignee: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Publication number: 20220043299Abstract: The present invention provides an image display panel including an image display unit and an optical film including a polarizing film provided on a viewing side of the image display unit via a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer has a degree of swelling with oleic acid of more than 130% and 190% or less, and the image display panel has a flat edge face. The image display panel with a bezel can preventing peeling-off of the pressure-sensitive adhesive layer even when placed in a humidified environment in a state where fat and oil or cream components are in contact with the elastic intermediate layer. The image display panel of the present invention can prevent peeling-off of the pressure-sensitive adhesive layer even when placed in a humidified environment in a state where fat and oil or cream components are in contact with the elastic intermediate layer.Type: ApplicationFiled: September 12, 2019Publication date: February 10, 2022Applicant: NITTO DENKO CORPORATIONInventors: Masato Fujita, Tomoyuki Kimura, Yusuke Toyama
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Patent number: 11221511Abstract: 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.Type: GrantFiled: March 28, 2018Date of Patent: January 11, 2022Assignee: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Patent number: 11216127Abstract: 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 adhType: GrantFiled: March 28, 2018Date of Patent: January 4, 2022Assignee: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Patent number: 11188177Abstract: 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 adhType: GrantFiled: March 28, 2018Date of Patent: November 30, 2021Assignee: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Publication number: 20210363391Abstract: A pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing, as monomer units, at least a (meth)acrylic polymer (A) that contains an alkyl (meth)acrylate, and a silicon compound (B), wherein: the silicon compound (B) is one or more silicon compounds selected from the group consisting of alkoxysilane compounds and organopolysiloxane compounds having an acidic group or an acid anhydride group derived from an acidic group and having no polyether group in the molecule, and/or a hydrolytic condensate thereof; and the pressure-sensitive adhesive layer satisfies the conditions of the resistance value change ratio represented by general formula (1). Formula (1): R250/Ri?3.0. This pressure-sensitive adhesive layer has reworkability with respect to a transparent conductive layer, corrosion resistance, and high durability.Type: ApplicationFiled: August 7, 2018Publication date: November 25, 2021Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Hirotomo Ono, Yusuke Toyama
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Patent number: 11169312Abstract: 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?? or less, and the creep value of the pressure-sensitive adhesive layer at 85° C. is 15-600 ?m inclusive.Type: GrantFiled: March 25, 2019Date of Patent: November 9, 2021Assignee: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Yusuke Toyama, Eiko Suefusa
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Publication number: 20210284875Abstract: 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.Type: ApplicationFiled: April 30, 2021Publication date: September 16, 2021Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Publication number: 20210179901Abstract: A laminate for a flexible image display device is disclosed including a pressure-sensitive adhesive layer and an optical film including at least a polarizing membrane, wherein an amount of deviation based on the pressure-sensitive adhesive layer in an end part of the laminate when the laminate is bent with a bending radius of 3 mm is set in a specific range, whereby exposure of the pressure-sensitive adhesive layer in the end part of the laminate with bending can be suppressed. The laminate for a flexible image display device includes a pressure-sensitive adhesive layer and an optical film including at least a polarizing membrane, wherein an amount of deviation based on the pressure-sensitive adhesive layer in an end part of the laminate is 100 to 600 ?m when the laminate is bent with a bending radius of 3 mm.Type: ApplicationFiled: July 26, 2018Publication date: June 17, 2021Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Yusuke Toyama, Taiki Shimokuri
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Publication number: 20210157186Abstract: 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 adhType: ApplicationFiled: March 28, 2018Publication date: May 27, 2021Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Patent number: 11008485Abstract: 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.Type: GrantFiled: July 6, 2017Date of Patent: May 18, 2021Assignee: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Publication number: 20210108109Abstract: An in-cell type liquid crystal panel is disclosed containing an in-cell type liquid crystal cell, a first polarizing film disposed on a viewing side of the in-cell liquid crystal cell, a second polarizing film disposed opposite to the viewing side, and a first pressure-sensitive adhesive layer disposed between the first polarizing film and the in-cell type liquid crystal cell, wherein: a surface resistance value of the first pressure-sensitive adhesive layer side is 1.0×108 to 1.0×1011?/? at the time of producing a first pressure-sensitive adhesive layer attached polarizing film in a state where the first pressure-sensitive adhesive layer is provided on the first polarizing film and a separator is provided on the first pressure-sensitive adhesive layer, and peeling off the separator immediately after the production, and a moisture permeability of the transparent protective film at 40° C.×92% RH is 900 g/(m2·24 h) or less.Type: ApplicationFiled: March 28, 2018Publication date: April 15, 2021Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Publication number: 20210109390Abstract: A pressure-sensitive adhesive layer attached polarizing film is provided with a pressure-sensitive adhesive layer and a polarizing film, wherein the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive composition comprising an inorganic cation-anion salt and a (meth)acrylic polymer containing, as monomer units, an alkyl (meth)acrylate and a polar functional group-containing monomer; and a ratio (b/a) of a variation in a surface resistance value on a side of the pressure-sensitive adhesive layer before and after humidification is 5 or less.Type: ApplicationFiled: March 28, 2018Publication date: April 15, 2021Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Yusuke Toyama
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Publication number: 20210103173Abstract: 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.Type: ApplicationFiled: March 28, 2018Publication date: April 8, 2021Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Yusuke Toyama
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Publication number: 20210048567Abstract: 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 ?? or less, and the creep value of the pressure-sensitive adhesive layer at 85° C. is 15-600 ?m inclusive.Type: ApplicationFiled: March 25, 2019Publication date: February 18, 2021Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Yusuke Toyama, Eiko Suefusa
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Publication number: 20200239743Abstract: An optical pressure-sensitive adhesive layer which can suppress the occurrence of foaming, peeling, lifting etc. on an adherend (an optical film) even when exposed to heating and humidification conditions; has excellent durability; can suppress surface unevenness due to light leakage; can suppress increases in adhering strength; and has excellent reworkability. An optical pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer that contains 3 to 25% by weight of an aromatic ring-containing monomer as a monomer unit and has a polydispersity (weight average molecular weight (Mw)/number average molecular weight (Mn)) of 3.0 or less, wherein the optical pressure-sensitive adhesive layer has an adhering strength of 11 N/25 mm or less to glass.Type: ApplicationFiled: April 13, 2020Publication date: July 30, 2020Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
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Publication number: 20200157387Abstract: A pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing, as monomer units, at least a (meth)acrylic polymer (A) that contains an alkyl (meth)acrylate, and a silicon compound (B), wherein: the silicon compound (B) is an organopolysiloxane compound; and when a laminate, in which a pressure-sensitive adhesive layer of a polarizing film provided with a pressure-sensitive adhesive layer having the pressure-sensitive adhesive layer and a polarizing film is laminated to an indium-tin composite oxide layer on a transparent conductive substrate having a transparent substrate and the indium-tin composite oxide layer, has been autoclaved for 15 minutes at 50° C. and 5 atm, and then the pressure-sensitive adhesive layer has been peeled away, the ratio of elemental silicon relative to the total of elemental carbon, nitrogen, oxygen, silicon, indium, and tin detected by X-ray photoelectron spectroscopy is 0.5-5 atomic % in the surface of the indium-tin composite oxide layer.Type: ApplicationFiled: August 7, 2018Publication date: May 21, 2020Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Hirotomo Ono, Yusuke Toyama