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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Patent number: 10598828Abstract: A method for continuously manufacturing an optical display device comprises feeding a continuous web of optical film laminate including a continuous web of releasable film that includes a conductive layer and an optical film sheet that includes a conductive layer formed on the releasable film, bending the releasable film at a peeling body located in close vicinity of a lamination position, collecting the releasable film and thereby peeling the optical film sheet from the optical film laminate, sending the optical film sheet to the lamination position, and laminating the optical film sheet with a panel member which is conveyed to the lamination position by a panel conveying channel which makes at least a double-storied structure with a portion of a collecting channel where the releasable film is collected, attenuating static electrification generated on the optical film sheet, and continuously laminating the optical film sheet with the panel member.Type: GrantFiled: October 24, 2018Date of Patent: March 24, 2020Assignee: NITTO DENKO CORPORATIONInventors: Yu Morimoto, Yusuke Toyama, Takaaki Ishii, Kazuo Kitada, Satoshi Hashimoto, Akihiro Nagura
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Patent number: 10578778Abstract: 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 ?/sq or less.Type: GrantFiled: November 2, 2018Date of Patent: March 3, 2020Assignee: NITTO DENKO CORPORATIONInventors: Yu Morimoto, Yusuke Toyama, Takaaki Ishii, Kazuo Kitada, Satoshi Hashimoto, Akihiro Nagura
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Patent number: 10551540Abstract: Provided are a separator-attached adhesive layer structure which comprises a separator having moderate light peelability with respect to an adhesive layer and exhibits excellent processability and durability, and a production method therefor. The production method comprises: a first step of forming a layer of an adhesive composition containing a (meth)acryl-based polymer, a peroxide and a phenolic antioxidant, on a release treatment surface of a separator subjected to a release treatment; and a second step of, after completion of the first step, heating the adhesive composition to cause cross-linking therein so as to be formed as an adhesive layer.Type: GrantFiled: June 20, 2014Date of Patent: February 4, 2020Assignee: NITTO DENKO CORPORATIONInventors: Takeharu Kitagawa, Yuki Kida, Shinsuke Akizuki, Atsushi Yasui, Yusuke Toyama, Takaaki Ishii
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Publication number: 20200032113Abstract: 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.Type: ApplicationFiled: September 27, 2017Publication date: January 30, 2020Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
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Publication number: 20200032116Abstract: The purpose of the present invention is to provide a pressure-sensitive adhesive composition for a polarizing film from which a pressure-sensitive adhesive layer for a polarizing film can be obtained which can suppress separator peeling strength and can specifically suppress increases in separator peeling strength even when stored for a long period of time after production, and further has excellent durability (heat resistance) even when exposed to high temperature heating conditions and heating/humidifying conditions; and to provide a method for a pressure-sensitive adhesive layer for a polarizing film, the pressure-sensitive adhesive layer attached polarizing film polarizing film which includes the pressure-sensitive adhesive layer, and an image display device that includes the pressure-sensitive adhesive layer attached polarizing film.Type: ApplicationFiled: September 27, 2017Publication date: January 30, 2020Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
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Publication number: 20200033673Abstract: The present invention provides a pressure-sensitive adhesive layer attached polarizing film far realizing an in-cell type liquid crystal panel in which it is possible to prevent clouding attributable to the pressure-sensitive adhesive layer even in a humidified environment, and it is also possible to satisfy a stable antistatic function and touch sensor sensitivity. This pressure-sensitive adhesive layer attached polarizing film is provided with a pressure-sensitive adhesive layer and a polarizing film, and is characterized in that: the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive composition comprising an organic cation-anion salt and a (meth)acrylic polymer containing, as monomer units, an alkyl (meth)acrylate and a polar functional group-containing monomer; and the ratio (b/a) of the variation in the surface resistances value of the pressure-sensitive adhesive layer-side before and after humidification is 5 or less.Type: ApplicationFiled: March 28, 2018Publication date: January 30, 2020Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Yusuke Toyama
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Publication number: 20200033674Abstract: 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: ApplicationFiled: March 28, 2018Publication date: January 30, 2020Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Publication number: 20200032114Abstract: The purpose of the present invention is to provide 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: September 27, 2017Publication date: January 30, 2020Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
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Publication number: 20200026123Abstract: The present invention provides a pressure-sensitive adhesive attached polarizing film for realizing an in-cell type liquid crystal panel which can satisfy a stable antistatic function and touch sensor sensitivity and has excellent heat resistance. This pressure-sensitive adhesive attached polarizing film is provided with a pressure-sensitive adhesive layer and a polarizing film, and is characterized in that: the polarizing film comprises at least a polarizer and a transparent protective film; at least the polarizing film, an anchor layer, and the pressure-sensitive adhesive layer are provided in this order from a viewing side; the anchor layer includes a conductive polymer; the surface resistance value of the anchor layer is 1.0×108 to 1.0×1011?/?; and the moisture permeability of the transparent protective film at 40° C.×92% RK is 10 g/(m2·24 h) or more.Type: ApplicationFiled: March 28, 2018Publication date: January 23, 2020Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Yusuke Toyama
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Publication number: 20200019013Abstract: A pressure-sensitive adhesive layer attached polarizing film provided with a pressure-sensitive adhesive layer and a polarizing film is disclosed wherein the pressure-sensitive adhesive layer attached polarizing film is provided with the polarizing film, an anchor layer, and the pressure-sensitive adhesive layer in this order; the, anchor layer includes a conductive polymer; the pressure-sensitive adhesive layer includes an antistatic agent; the anchor layer has a thickness of from 0.01 to 0.5 ?m and a surface resistance value of from 1.0×108 to 1.0×1010 ?/?; the adhesive layer has a thickness of 5 to 100 ?m and a surface resistance of from 1.0×1010 to 1.0×1012 ?/?; and the ratio (b/a) of the variation in the surface resistance value on the side of the pressure-sensitive adhesive layer before and after humidification is 5 or less.Type: ApplicationFiled: March 28, 2018Publication date: January 16, 2020Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Yusuke Toyama
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Publication number: 20190352547Abstract: A pressure-sensitive-adhesive-layer-attached polarizing film including 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.Type: ApplicationFiled: July 30, 2019Publication date: November 21, 2019Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Yusuke Toyama, Yu Morimoto
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Publication number: 20190338167Abstract: 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: July 6, 2017Publication date: November 7, 2019Applicant: NITTO DENKO CORPORATIONInventors: Masakuni Fujita, Satoshi Yamamoto, Yusuke Toyama
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Publication number: 20190271879Abstract: A liquid crystal panel is disclosed including a pressure-sensitive adhesive layer attached polarizing film which includes a polarizing film including a polarizer and a transparent protective film formed on at least one surface of the polarizer, and a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on at least one surface of the polarizing film. The polarizing film is bonded through the pressure-sensitive adhesive layer to a transparent conductive layer attached liquid crystal cell in which the transparent conductive layer contains a metal. The transparent protective film has a moisture permeability of 1000 g/(m2·24-hours) or less at 40° C. and 92% RH, the pressure-sensitive adhesive composition includes an ionic compound, and the pressure-sensitive adhesive layer shows a haze value difference of 5.0% or less.Type: ApplicationFiled: September 27, 2017Publication date: September 5, 2019Applicant: NITTO DENKO CORPORATIONInventors: Mizue Yamasaki, Yusuke Toyama, Masakuni Fujita
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Publication number: 20190225842Abstract: The purpose of the present invention is to provide: an optical pressure-sensitive adhesive layer which can suppress the occurrence of foaming, peeling, lifting or the like on an adherend (an optical film) under heating and humidification conditions, and which has high adhesion reliability and excellent durability at high temperatures; 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. An optical pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer, wherein the optical pressure-sensitive adhesive layer has a gel fraction of 70% or more and a creep value of 55 ?m or more when a load of 500 g is applied to the optical pressure-sensitive adhesive layer for 1 hour under an environment of 115° C.Type: ApplicationFiled: September 27, 2017Publication date: July 25, 2019Applicant: NITTO DENKO CORPORATIONInventors: Tomoyuki Kimura, Hirotomo Ono, Akiko Sugino, Yusuke Toyama
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Publication number: 20190218427Abstract: 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.Type: ApplicationFiled: September 27, 2017Publication date: July 18, 2019Applicant: NITTO DENKO CORPORATIONInventors: Mizue Yamasaki, Yusuke Toyama
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Publication number: 20190211234Abstract: The purpose of the present invention is to provide: a pressure-sensitive adhesive layer for a flexible image display device which exhibits excellent bending resistance and adhesiveness, and which does not peel or break even after repeated bending; a laminate for a flexible image display device which includes the pressure-sensitive adhesive layer for a flexible image display device; and a flexible image display device in which the laminate for a flexible image display device is provided. A pressure-sensitive adhesive layer for a flexible image display device formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer, wherein a weight average molecular weight (Mw) of the (meth)acrylic polymer is from 1,000,000 to 2,500,000, and a glass transition temperature (Tg) of the pressure-sensitive adhesive layer is 0° C. or less.Type: ApplicationFiled: August 2, 2017Publication date: July 11, 2019Applicant: NITTO DENKO CORPORATIONInventors: Mizue Yamasaki, Yusuke Toyama, Yu Morimoto
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Publication number: 20190193374Abstract: The disclosure provides a laminate for a flexible image display device by using an optical film including at least a polarizer and a plurality of specific pressure-sensitive adhesive layers, which exhibits excellent bending resistance and adhesiveness and does not peel or break even after repeated bending; and a flexible image display device in which the laminate for a flexible image display device is disposed. The laminate includes a plurality of pressure-sensitive adhesive layers and an optical film including at least a polarizer, wherein a thickness of the polarizer is 20 ?m or less, and a storage elastic modulus G? at 25° C. of the pressure-sensitive adhesive layer at an outermost surface on a convex side when the laminate is folded, among the plurality of pressure-sensitive adhesive layers, is substantially equal to or lower than the storage elastic modulus G? at 25° C. of another pressure-sensitive adhesive layer.Type: ApplicationFiled: August 2, 2017Publication date: June 27, 2019Applicant: NITTO DENKO CORPORATIONInventors: Mizue Yamasaki, Yusuke Toyama, Yu Morimoto
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Publication number: 20190177577Abstract: The disclosure provides: a pressure-sensitive adhesive composition for a flexible image display device; a pressure-sensitive adhesive layer for a flexible image display device; a laminate for a flexible image display device, which, as a result of using the pressure-sensitive adhesive layer and au optical laminate, exhibits excellent bending resistance and adhesiveness, and does not peel even after repeated bending; and a flexible image display device. The pressure-sensitive adhesive composition includes a (meth)acrylic polymer including as monomer units: at least one monomer having a reactive functional group selected from the group consisting of hydroxyl group-containing monomers, carboxyl group-containing monomers, amino group-containing monomers, and amide group-containing monomers; and a (meth)acrylic monomer having a linear or branched alkyl group of 1 to 24 carbon atoms, wherein the monomer having the reactive functional group in all monomers constituting the (meth)acrylic polymer is 0.Type: ApplicationFiled: August 2, 2017Publication date: June 13, 2019Applicant: NITTO DENKO CORPORATIONInventors: Mizue Yamasaki, Yusuke Toyama, Yu Morimoto
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Publication number: 20190079216Abstract: 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?/sq or less.Type: ApplicationFiled: November 2, 2018Publication date: March 14, 2019Inventors: Yu MORIMOTO, Yusuke TOYAMA, Takaaki ISHII, Kazuo KITADA, Satoshi HASHIMOTO, Akihiro NAGURA
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Publication number: 20190056533Abstract: A method for continuously manufacturing an optical display device comprises feeding a continuous web of optical film laminate including a continuous web of releasable film that includes a conductive layer and an optical film sheet that includes a conductive layer formed on the releasable film, bending the releasable film at a peeling body located in close vicinity of a lamination position, collecting the releasable film and thereby peeling the optical film sheet from the optical film laminate, sending the optical film sheet to the lamination position, and laminating the optical film sheet with a panel member which is conveyed to the lamination position by a panel conveying channel which makes at least a double-storied structure with a portion of a collecting channel where the releasable film is collected, attenuating static electrification generated on the optical film sheet, and continuously laminating the optical film sheet with the panel member.Type: ApplicationFiled: October 24, 2018Publication date: February 21, 2019Inventors: Yu MORIMOTO, Yusuke TOYAMA, Takaaki ISHII, Kazuo KITADA, Satoshi HASHIMOTO, Akihiro NAGURA