Patents by Inventor Tetsuroh Asakura
Tetsuroh Asakura 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: 11733566Abstract: A curved liquid crystal panel includes a first substrate curved in a first direction; a second substrate curved in a first direction and facing the first substrate; a liquid crystal sandwiched between the first substrate and the second substrate; a first seal that adheres the first substrate and the second substrate to each other and that seals the liquid crystal; and a second seal surrounding a periphery of the first seal. A force of the second seal that adheres the first substrate and the second substrate to each other is weaker than a force of the first seal that adheres the first substrate and the second substrate to each other.Type: GrantFiled: December 13, 2021Date of Patent: August 22, 2023Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.Inventor: Tetsuroh Asakura
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Patent number: 11506925Abstract: A liquid crystal display device includes a first liquid crystal display panel including a first light-transmitting substrate (thickness T2?0.3 mm), a substrate, a first liquid crystal, a first polarizing plate having a second main surface that is adhered to the first light-transmitting substrate; an adhering layer provided on a first main surface of the first polarizing plate; and a second light-transmitting substrate (thickness T3?0.3 mm) adhered to the first main surface by the adhering layer (thickness T1?0.15 mm). An adhesion parameter ? is 1.04 or less when a maximum height of an unevenness of the first main surface 0.0005 mm or less, and the adhesion parameter ? is 0.43 or less when the maximum height of the unevenness of the first main surface is greater than 0.0005 mm and 0.001 mm or less.Type: GrantFiled: December 18, 2020Date of Patent: November 22, 2022Assignees: TIANMA JAPAN, LTD., Wuhan Tianma Micro-Electronics Co., Ltd.Inventors: Jin Matsushima, Tetsuroh Asakura, Yukie Keicho
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Publication number: 20220197068Abstract: A curved liquid crystal panel includes a first substrate curved in a first direction; a second substrate curved in a first direction and facing the first substrate; a liquid crystal sandwiched between the first substrate and the second substrate; a first seal that adheres the first substrate and the second substrate to each other and that seals the liquid crystal; and a second seal surrounding a periphery of the first seal. A force of the second seal that adheres the first substrate and the second substrate to each other is weaker than a force of the first seal that adheres the first substrate and the second substrate to each other.Type: ApplicationFiled: December 13, 2021Publication date: June 23, 2022Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.Inventor: Tetsuroh ASAKURA
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Publication number: 20210200024Abstract: A liquid crystal display device includes a first liquid crystal display panel including a first light-transmitting substrate (thickness T2?0.3 mm), a substrate, a first liquid crystal, a first polarizing plate having a second main surface that is adhered to the first light-transmitting substrate; an adhering layer provided on a first main surface of the first polarizing plate; and a second light-transmitting substrate (thickness T3?0.3 mm) adhered to the first main surface by the adhering layer (thickness T1?0.15 mm). An adhesion parameter ? is 1.04 or less when a maximum height of an unevenness of the first main surface 0.0005 mm or less, and the adhesion parameter ? is 0.43 or less when the maximum height of the unevenness of the first main surface is greater than 0.0005 mm and 0.001 mm or less.Type: ApplicationFiled: December 18, 2020Publication date: July 1, 2021Applicants: Tianma Japan, Ltd., Wuhan Tianma Micro-Electronics Co., Ltd.Inventors: Jin MATSUSHIMA, Tetsuroh ASAKURA, Yukie KEICHO
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Patent number: 10942383Abstract: A display device includes: a liquid crystal panel having a first surface including a display region and a second surface opposite to the first surface, as curved surfaces curved in a first direction; a contact member attached to the second surface; a pressure member attached to the contact member, and applying a pressing force to the panel, the pressing force countering an elastic force acting to restore the panel as a flat plate; and a fixing chassis fixing the pressure member at a position opposing the contact member; the panel includes a seal tracing an inner circumference of the curved surface and sealing liquid crystal, and a contact region between the contact member and the panel is located inside the seal along a third axis being perpendicular to a first axis defining a non-curved side of the curved surface, and to a second axis defining the first direction.Type: GrantFiled: August 8, 2019Date of Patent: March 9, 2021Assignee: TIANMA JAPAN, LTD.Inventor: Tetsuroh Asakura
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Patent number: 10852572Abstract: A display includes a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, pixel driving electrodes for pixels, the pixel driving electrodes being provided on the first substrate and configured to provide control electric fields to the liquid crystal layer, louver elements, louver element driving electrodes provided on a face facing the first substrate of the second substrate, and an unseparated shield electrode between the louver element driving electrodes and the liquid crystal layer. Each of the louver elements are configured to stand on the second substrate, be sandwiched between one of the louver element driving electrodes and the shield electrode, and change amount of light to be transmitted in accordance with voltage applied across the louver element driving electrode and the shield electrode to change viewing angle.Type: GrantFiled: November 21, 2018Date of Patent: December 1, 2020Assignee: TIANMA JAPAN, LTD.Inventors: Hideki Nishimura, Tetsuroh Asakura, Futoshi Nakanishi
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Patent number: 10795216Abstract: Provided is a method of manufacturing a display device including a louver that is capable of changing viewing angle. The method includes: a first step of forming a first electrode layer to drive the louver on a first main face of a first substrate; a second step of forming a resin layer on the first electrode layer; a third step of forming louver grooves to contain electrophoretic particles and dispersion medium in the resin layer; a fourth step of forming a sealing layer having a flat top face on the resin layer having the louver grooves in such a manner that the sealing layer closes the louver grooves; a fifth step of forming color filters on the sealing layer; and a sixth step of forming a second electrode layer to drive the louver on the sealing layer.Type: GrantFiled: November 21, 2018Date of Patent: October 6, 2020Assignee: TIANMA JAPAN, LTD.Inventors: Tetsuroh Asakura, Hideki Nishimura, Futoshi Nakanishi
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Patent number: 10718953Abstract: A substrate laminating apparatus, including a first vacuum chamber including a first opening; a first table provided inside the first opening for holding a first substrate; a second vacuum chamber including a second opening; a second table provided inside the second opening for holding a second substrate, wherein the substrates are laminated by reducing a pressure in a closed space formed by having the first opening faced with the second opening. The apparatus also includes a vacuum evacuation unit connected to the first vacuum chamber or the second vacuum chamber and performs reduced-pressure evacuation of the closed space. When there is a direction along which priority is given on lamination precision when laminating the first and second substrates, and the direction is defined as a lamination precision priority direction, a reduced-pressure evacuation direction done by the vacuum evacuation unit is a direction different from the lamination precision priority direction.Type: GrantFiled: February 26, 2018Date of Patent: July 21, 2020Assignee: TIANMA MICROELECTRONICS CO., LTD.Inventors: Tetsuroh Asakura, Koji Shigemura
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Publication number: 20200050056Abstract: A display device includes: a liquid crystal panel having a first surface including a display region and a second surface opposite to the first surface, as curved surfaces curved in a first direction; a contact member attached to the second surface; a pressure member attached to the contact member, and applying a pressing force to the panel, the pressing force countering an elastic force acting to restore the panel as a flat plate; and a fixing chassis fixing the pressure member at a position opposing the contact member; the panel includes a seal tracing an inner circumference of the curved surface and sealing liquid crystal, and a contact region between the contact member and the panel is located inside the seal along a third axis being perpendicular to a first axis defining a non-curved side of the curved surface, and to a second axis defining the first direction.Type: ApplicationFiled: August 8, 2019Publication date: February 13, 2020Applicant: Tianma Japan, Ltd.Inventor: Tetsuroh Asakura
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Publication number: 20190162997Abstract: Provided is a method of manufacturing a display device including a louver that is capable of changing viewing angle. The method includes: a first step of forming a first electrode layer to drive the louver on a first main face of a first substrate; a second step of forming a resin layer on the first electrode layer; a third step of forming louver grooves to contain electrophoretic particles and dispersion medium in the resin layer; a fourth step of forming a sealing layer having a flat top face on the resin layer having the louver grooves in such a manner that the sealing layer closes the louver grooves; a fifth step of forming color filters on the sealing layer; and a sixth step of forming a second electrode layer to drive the louver on the sealing layer.Type: ApplicationFiled: November 21, 2018Publication date: May 30, 2019Applicant: TIANMA JAPAN, LTD.Inventors: Tetsuroh ASAKURA, Hideki Nishimura, Futoshi Nakanishi
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Publication number: 20190162990Abstract: A display includes a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, pixel driving electrodes for pixels, the pixel driving electrodes being provided on the first substrate and configured to provide control electric fields to the liquid crystal layer, louver elements, louver element driving electrodes provided on a face facing the first substrate of the second substrate, and an unseparated shield electrode between the louver element driving electrodes and the liquid crystal layer. Each of the louver elements are configured to stand on the second substrate, be sandwiched between one of the louver element driving electrodes and the shield electrode, and change amount of light to be transmitted in accordance with voltage applied across the louver element driving electrode and the shield electrode to change viewing angle.Type: ApplicationFiled: November 21, 2018Publication date: May 30, 2019Applicant: Tianma Japan, Ltd.Inventors: Hideki NISHIMURA, Tetsuroh ASAKURA, Futoshi NAKANISHI
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Publication number: 20180188547Abstract: A substrate laminating apparatus, including a first vacuum chamber including a first opening; a first table provided inside the first opening for holding a first substrate; a second vacuum chamber including a second opening; a second table provided inside the second opening for holding a second substrate, wherein the substrates are laminated by reducing a pressure in a closed space formed by having the first opening faced with the second opening. The apparatus also includes a vacuum evacuation unit connected to the first vacuum chamber or the second vacuum chamber and performs reduced-pressure evacuation of the closed space. When there is a direction along which priority is given on lamination precision when laminating the first and second substrates, and the direction is defined as a lamination precision priority direction, a reduced-pressure evacuation direction done by the vacuum evacuation unit is a direction different from the lamination precision priority direction.Type: ApplicationFiled: February 26, 2018Publication date: July 5, 2018Applicant: Tianma Japan, Ltd.Inventors: Tetsuroh ASAKURA, Koji SHIGEMURA
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Patent number: 9904062Abstract: To provide a substrate laminating apparatus and a substrate laminating method capable of laminating two substrates highly precisely while achieving low cost and saving space. The substrate laminating apparatus includes an upper-substrate camera group provided to a lower vacuum chamber for capturing an image of an upper substrate fixed to an upper vacuum chamber. The upper-substrate camera group captures images of a first upper-substrate alignment mark and a second upper-substrate alignment mark of the upper substrate fixed to the upper vacuum chamber by actions synchronized with the lower vacuum chamber. Thereby, it is possible to save the space and to lower the cost by reducing the number of mechanical components.Type: GrantFiled: March 6, 2015Date of Patent: February 27, 2018Assignee: NLT TECHNOLOGIES, LTD.Inventors: Tetsuroh Asakura, Koji Shigemura
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Publication number: 20150253580Abstract: To provide a substrate laminating apparatus and a substrate laminating method capable of laminating two substrates highly precisely while achieving low cost and saving space. The substrate laminating apparatus includes an upper-substrate camera group provided to a lower vacuum chamber for capturing an image of an upper substrate fixed to an upper vacuum chamber. The upper-substrate camera group captures images of a first upper-substrate alignment mark and a second upper-substrate alignment mark of the upper substrate fixed to the upper vacuum chamber by actions synchronized with the lower vacuum chamber. Thereby, it is possible to save the space and to lower the cost by reducing the number of mechanical components.Type: ApplicationFiled: March 6, 2015Publication date: September 10, 2015Applicant: NLT TECHNOLOGIES, LTD.Inventors: Tetsuroh ASAKURA, Koji SHIGEMURA
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Patent number: 8724070Abstract: A connecting structure of the present invention includes a first substrate, a second substrate on which the first substrate is laminated, and a sheet like connection body having one end connected to one principal surface of the first substrate and another end connected to one principal surface of the second substrate, wherein a lengthwise direction of the sheet like connection body is parallel to a perimeter part of the first substrate, and the sheet like connection body has a slit part extending from one of end portions thereof to a part thereof along the lengthwise direction, and has a first end and a second end divided by the slit part at one of end portions, the first end is connected to a principal surface of the first substrate in vicinity of a peripheral part of the first substrate, and the second end is connected to a principal surface of the second substrate in vicinity of a peripheral part of the first substrate.Type: GrantFiled: February 20, 2013Date of Patent: May 13, 2014Assignee: NLT Technologies, Ltd.Inventors: Youichirou Kamon, Hiroshi Haga, Tetsuroh Asakura
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Patent number: 8717525Abstract: A connecting structure of the present invention includes a first substrate, a second substrate on which the first substrate is laminated, and a sheet like connection body having one end connected to one principal surface of the first substrate and another end connected to one principal surface of the second substrate, wherein a lengthwise direction of the sheet like connection body is parallel to a perimeter part of the first substrate, and the sheet like connection body has a slit part extending from one of end portions thereof to a part thereof along the lengthwise direction, and has a first end and a second end divided by the slit part at one of end portions, the first end is connected to a principal surface of the first substrate in vicinity of a peripheral part of the first substrate, and the second end is connected to a principal surface of the second substrate in vicinity of a peripheral part of the first substrate.Type: GrantFiled: October 3, 2013Date of Patent: May 6, 2014Assignee: NLT Technologies, Ltd.Inventors: Youichirou Kamon, Hiroshi Haga, Tetsuroh Asakura
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Publication number: 20140036181Abstract: A connecting structure of the present invention includes a first substrate, a second substrate on which the first substrate is laminated, and a sheet like connection body having one end connected to one principal surface of the first substrate and another end connected to one principal surface of the second substrate, wherein a lengthwise direction of the sheet like connection body is parallel to a perimeter part of the first substrate, and the sheet like connection body has a slit part extending from one of end portions thereof to a part thereof along the lengthwise direction, and has a first end and a second end divided by the slit part at one of end portions, the first end is connected to a principal surface of the first substrate in vicinity of a peripheral part of the first substrate, and the second end is connected to a principal surface of the second substrate in vicinity of a peripheral part of the first substrate.Type: ApplicationFiled: October 3, 2013Publication date: February 6, 2014Applicant: NLT Technologies, Ltd.Inventors: Youichirou KAMON, Hiroshi HAGA, Tetsuroh ASAKURA
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Patent number: 8405812Abstract: A connecting structure of the present invention includes a first substrate, a second substrate on which the first substrate is laminated, and a sheet like connection body having one end connected to one principal surface of the first substrate and another end connected to one principal surface of the second substrate, wherein a lengthwise direction of the sheet like connection body is parallel to a perimeter part of the first substrate, and the sheet like connection body has a slit part extending from one of end portions thereof to a part thereof along the lengthwise direction, and has a first end and a second end divided by the slit part at one of end portions, the first end is connected to a principal surface of the first substrate in vicinity of a peripheral part of the first substrate, and the second end is connected to a principal surface of the second substrate in vicinity of a peripheral part of the first substrate.Type: GrantFiled: August 24, 2010Date of Patent: March 26, 2013Assignee: NLT Technologies, Ltd.Inventors: Youichirou Kamon, Hiroshi Haga, Tetsuroh Asakura
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Publication number: 20110051068Abstract: A connecting structure of the present invention includes a first substrate, a second substrate on which the first substrate is laminated, and a sheet like connection body having one end connected to one principal surface of the first substrate and another end connected to one principal surface of the second substrate, wherein a lengthwise direction of the sheet like connection body is parallel to a perimeter part of the first substrate, and the sheet like connection body has a slit part extending from one of end portions thereof to a part thereof along the lengthwise direction, and has a first end and a second end divided by the slit part at one of end portions, the first end is connected to a principal surface of the first substrate in vicinity of a peripheral part of the first substrate, and the second end is connected to a principal surface of the second substrate in vicinity of a peripheral part of the first substrate.Type: ApplicationFiled: August 24, 2010Publication date: March 3, 2011Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: YOUICHIROU KAMON, HIROSHI HAGA, TETSUROH ASAKURA
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Patent number: 6531329Abstract: Provided is a method of manufacturing a liquid crystal display panel of high quality without wasting liquid crystal material. In a step for pressing both of transparent glass substrates against each other, liquid crystal spreads and air bubbles are exhausted through notch portions. A sealing material is crushed before the liquid crystal reaches the notch portions, and the notch portions are blocked. Accordingly, a gap between the transparent glass substrates is sealed in a state where the liquid crystal is filled therein. Moreover, at the same time, both of the transparent glass substrates are compressively attached to each other with the sealing material interposed therebetween.Type: GrantFiled: June 18, 2001Date of Patent: March 11, 2003Assignee: NEC CorporationInventors: Tetsuroh Asakura, Takeshi Sasaki