Patents by Inventor Koji Yonemura
Koji Yonemura 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: 10795195Abstract: A liquid crystal display apparatus of the present invention includes a housing holding an outer peripheral portion of a liquid crystal panel with gap portions provided in a central portion thereof such that a curvature of a curved shape is variable when a surface pressing stress is applied, in which columnar spacers are arranged at a higher density in a region of the central portion in a curve direction than in a region of a peripheral portion, the density being the density of the columnar spacers holding a gap between glass substrates in a display region of the curved liquid crystal panel.Type: GrantFiled: April 1, 2019Date of Patent: October 6, 2020Assignee: Mitsubishi Electric CorporationInventors: Yukihiro Kudo, Koji Yonemura, Hiroshi Umeda
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Patent number: 10663788Abstract: An array substrate includes inter-pixel patterns. A counter substrate includes light-shielding patterns. In a case where a position of an inter-pixel pattern to be noticed is displaced from a peak of a curved shape to a peripheral section of a display area, a shift amount of the position of a light-shielding pattern to be noticed when the counter substrate is in a flat state from the position of the inter-pixel pattern to be noticed when the array substrate is in a flat state first increases and then decreases. Alternatively, a substrate that is one of the array substrate and the counter substrate includes light-shielding patterns. In a case where a position of a light-shielding pattern to be noticed is displaced from a peak of a curved shape to a peripheral section of a display area, a width of the light-shielding pattern to be noticed first increases and then decreases.Type: GrantFiled: November 7, 2017Date of Patent: May 26, 2020Assignee: Mitsubishi Electric CorporationInventors: Yukihiro Kudo, Koji Yonemura
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Patent number: 10481440Abstract: A liquid crystal display device is a curved liquid crystal display device including a liquid crystal panel which includes a liquid crystal, glass substrates which sandwich the liquid crystal, main spacers, and sub spacers. The main spacers come into contact with both of the glass substrates and keep an interval between the glass substrates. The sub spacers are arranged to come into contact with only one of the glass substrates, and, when the main spacers elastically deform and the interval between the glass substrates becomes close, come into contact with both of the glass substrates and keep the interval. The density of the main spacers per unit area in the display region is higher at a center portion than at both end portions in a curving direction of the liquid crystal panel.Type: GrantFiled: December 7, 2017Date of Patent: November 19, 2019Assignee: Mitsubishi Electric CorporationInventors: Koji Yonemura, Yukihiro Kudou
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Publication number: 20190324310Abstract: A liquid crystal display apparatus of the present invention includes a housing holding an outer peripheral portion of a liquid crystal panel with gap portions provided in a central portion thereof such that a curvature of a curved shape is variable when a surface pressing stress is applied, in which columnar spacers are arranged at a higher density in a region of the central portion in a curve direction than in a region of a peripheral portion, the density being the density of the columnar spacers holding a gap between glass substrates in a display region of the curved liquid crystal panel.Type: ApplicationFiled: April 1, 2019Publication date: October 24, 2019Applicant: Mitsubishi Electric CorporationInventors: Yukihiro KUDO, Koji YONEMURA, Hiroshi UMEDA
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Patent number: 10429709Abstract: A pretilt angle of a liquid crystal molecule on the side of an array substrate is formed such that the liquid crystal molecule goes away from the array substrate in a direction to the left when viewed from a position facing a display surface of a liquid crystal panel. The pretilt angle on the side of a counter substrate is formed such that the liquid crystal molecule goes away from the counter substrate in a direction to the right when viewed from a position facing the display surface. The directions to the left and the right define a direction X corresponding to a horizontal direction of the liquid crystal panel. A direction of a delay phase axis of a biaxial phase difference film is arranged in a position rotated anticlockwise in an angular range from over 0° to 1° from the direction X.Type: GrantFiled: September 12, 2017Date of Patent: October 1, 2019Assignee: Mitsubishi Electric CorporationInventors: Koji Yonemura, Hiroshi Umeda, Kazunori Okumoto
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Patent number: 10379410Abstract: A liquid crystal display apparatus that controls liquid crystals with a pixel structure having a red pixel, a green pixel, a blue pixel, and a white pixel as a basic unit. Voltage-transmittance characteristics of the liquid crystals corresponding to the white pixel are different from voltage-transmittance characteristics of the liquid crystals corresponding to each of the red pixel, the green pixel, and the blue pixel.Type: GrantFiled: September 13, 2017Date of Patent: August 13, 2019Assignee: Mitsubishi Electric CorporationInventor: Koji Yonemura
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Patent number: 10036925Abstract: A liquid crystal display device includes: a display panel which includes a TFT array substrate and a CF substrate arranged as opposed to each other, and a liquid crystal held therebetween; and a front panel which is adhered to a front surface side of the display panel with a resin layer interposed therebetween. A display region of the display panel is provided with main spacers formed on the CF substrate and making contact with the TFT array substrate, and sub-spacers formed on the CF substrate and not reaching the TFT array substrate. A ratio of a total contact area of the main spacers and the TFT array substrate with respect to an area of the display region of the liquid crystal panel is equal to or smaller than 0.02%.Type: GrantFiled: May 25, 2017Date of Patent: July 31, 2018Assignee: Mitsubishi Electric CorporationInventors: Koji Yonemura, Hiroshi Umeda
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Publication number: 20180173034Abstract: A liquid crystal display device is a curved liquid crystal display device including a liquid crystal panel which includes a liquid crystal, glass substrates which sandwich the liquid crystal, main spacers, and sub spacers. The main spacers come into contact with both of the glass substrates and keep an interval between the glass substrates. The sub spacers are arranged to come into contact with only one of the glass substrates, and, when the main spacers elastically deform and the interval between the glass substrates becomes close, come into contact with both of the glass substrates and keep the interval. The density of the main spacers per unit area in the display region is higher at a center portion than at both end portions in a curving direction of the liquid crystal panel.Type: ApplicationFiled: December 7, 2017Publication date: June 21, 2018Applicant: Mitsubishi Electric CorporationInventors: Koji YONEMURA, Yukihiro KUDOU
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Publication number: 20180136511Abstract: An array substrate includes inter-pixel patterns. A counter substrate includes light-shielding patterns. In a case where a position of an inter-pixel pattern to be noticed is displaced from a peak of a curved shape to a peripheral section of a display area, a shift amount of the position of a light-shielding pattern to be noticed when the counter substrate is in a flat state from the position of the inter-pixel pattern to be noticed when the array substrate is in a flat state first increases and then decreases. Alternatively, a substrate that is one of the array substrate and the counter substrate includes light-shielding patterns. In a case where a position of a light-shielding pattern to be noticed is displaced from a peak of a curved shape to a peripheral section of a display area, a width of the light-shielding pattern to be noticed first increases and then decreases.Type: ApplicationFiled: November 7, 2017Publication date: May 17, 2018Applicant: Mitsubishi Electric CorporationInventors: Yukihiro KUDO, Koji YONEMURA
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Patent number: 9904123Abstract: A liquid crystal display panel includes switching elements, transparent pixel electrodes, and a transparent common electrode having a predetermined area overlapped with an upper layer of the transparent pixel electrode through an insulating film and driving liquid crystal with the transparent pixel electrode. In plane view, a shading layer covers at least one part of a conductive pattern where a light leakage occurs in front view by an alignment defect of the liquid crystal near a non-permeable conductive pattern disposed in the display region at the time of black display, and has eaves more protruding than the conductive pattern. The transparent common electrode is provided to overlap with the conductive pattern arranged to overlap with the light-shielding layer having the eaves in a side of the liquid crystal and to protrude compared with the light-shielding layer having the eaves in a planar view.Type: GrantFiled: September 19, 2016Date of Patent: February 27, 2018Assignee: Mitsubishi Electric CorporationInventor: Koji Yonemura
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Publication number: 20180004024Abstract: A pretilt angle of a liquid crystal molecule on the side of an array substrate is formed such that the liquid crystal molecule goes away from the array substrate in a direction to the left when viewed from a position facing a display surface of a liquid crystal panel. The pretilt angle on the side of a counter substrate is formed such that the liquid crystal molecule goes away from the counter substrate in a direction to the right when viewed from a position facing the display surface. The directions to the left and the right define a direction X corresponding to a horizontal direction of the liquid crystal panel. A direction of a delay phase axis of a biaxial phase difference film is arranged in a position rotated anticlockwise in an angular range from over 0° to 1° from the direction X.Type: ApplicationFiled: September 12, 2017Publication date: January 4, 2018Applicant: Mitsubishi Electric CorporationInventors: Koji YONEMURA, Hiroshi UMEDA, Kazunori OKUMOTO
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Publication number: 20180004029Abstract: A liquid crystal display apparatus that controls liquid crystals with a pixel structure having a red pixel, a green pixel, a blue pixel, and a white pixel as a basic unit. Voltage-transmittance characteristics of the liquid crystals corresponding to the white pixel are different from voltage-transmittance characteristics of the liquid crystals corresponding to each of the red pixel, the green pixel, and the blue pixel.Type: ApplicationFiled: September 13, 2017Publication date: January 4, 2018Applicant: Mitsubishi Electric CorporationInventor: Koji YONEMURA
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Publication number: 20170343897Abstract: A method of forming a pattern, the method including exposing under KrF excimer laser beams, a chemical for photolithography coated through spin coating, including a resin ingredient having a mass-average molecular weight (Mw) of 2000 to 50000 and an organic solvent having a saturated vapor pressure of 1 kPa or more (1 atm, 20° C.) and a viscosity of 1.1 cP (1 atm, 20° C.) or less.Type: ApplicationFiled: August 4, 2017Publication date: November 30, 2017Inventors: Koji YONEMURA, Yasuo SOMEYA, Deuk Young YOON
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Patent number: 9804438Abstract: Liquid crystal molecules have a pretilt angle to the left-and-right direction in a plane perpendicular to the up-and-down direction, so that an end part of a first side as one side of a left side and a right side of the liquid crystal molecules is set closer to a backlight than an end part of a second side as the other side. Second edge parts of a black matrix adjacent to an upper side and a lower side of an opening have a straight line shape extending by inclination to mutually the same side in the left-and-right direction, so that an end part of the same side as a first side as one side of the left side and the right side of the second edge parts is positioned above the end part of the same side as the second side as the other side.Type: GrantFiled: January 29, 2016Date of Patent: October 31, 2017Assignee: Mitsubishi Electric CorporationInventors: Koji Yonemura, Manabu Iwakawa, Akimasa Yuki, Toshiaki Fujino, Tetsuya Satake, Taroh Yoshino, Kazunori Okumoto
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Patent number: 9804469Abstract: A pretilt angle of a liquid crystal molecule on the side of an array substrate is formed such that the liquid crystal molecule goes away from the array substrate in a direction to the left when viewed from a position facing a display surface of a liquid crystal panel. The pretilt angle on the side of a counter substrate is formed such that the liquid crystal molecule goes away from the counter substrate in a direction to the right when viewed from a position facing the display surface. The directions to the left and the right define a direction X corresponding to a horizontal direction of the liquid crystal panel. A direction of a delay phase axis of a biaxial phase difference film is arranged in a position rotated anticlockwise in an angular range from over 0° to 1° from the direction X.Type: GrantFiled: September 10, 2015Date of Patent: October 31, 2017Assignee: Mitsubishi Electric CorporationInventors: Koji Yonemura, Hiroshi Umeda, Kazunori Okumoto
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Publication number: 20170261784Abstract: A liquid crystal display device includes: a display panel which includes a TFT array substrate and a CF substrate arranged as opposed to each other, and a liquid crystal held therebetween; and a front panel which is adhered to a front surface side of the display panel with a resin layer interposed therebetween. A display region of the display panel is provided with main spacers formed on the CF substrate and making contact with the TFT array substrate, and sub-spacers formed on the CF substrate and not reaching the TFT array substrate. A ratio of a total contact area of the main spacers and the TFT array substrate with respect to an area of the display region of the liquid crystal panel is equal to or smaller than 0.02%.Type: ApplicationFiled: May 25, 2017Publication date: September 14, 2017Applicant: Mitsubishi Electric CorporationInventors: Koji YONEMURA, Hiroshi UMEDA
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Publication number: 20170003558Abstract: A liquid crystal display panel includes switching elements, transparent pixel electrodes, and a transparent common electrode having a predetermined area overlapped with an upper layer of the transparent pixel electrode through an insulating film and driving liquid crystal with the transparent pixel electrode. In plane view, a shading layer covers at least one part of a conductive pattern where a light leakage occurs in front view by an alignment defect of the liquid crystal near a non-permeable conductive pattern disposed in the display region at the time of black display, and has eaves more protruding than the conductive pattern. The transparent common electrode is provided to overlap with the conductive pattern arranged to overlap with the light-shielding layer having the eaves in a side of the liquid crystal and to protrude compared with the light-shielding layer having the eaves in a planar view.Type: ApplicationFiled: September 19, 2016Publication date: January 5, 2017Applicant: Mitsubishi Electric CorporationInventor: Koji YONEMURA
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Publication number: 20160306278Abstract: A chemical for photolithography to uniformly form a thick film to a desired thickness while enhancing a liquid transfer property by lowering the viscosity of a composition for photolithography, and a resist composition including the same. The chemical includes a solvent having a saturated vapor pressure and viscosity within predetermined ranges, and a resin is formed as a film having a thickness of 5 ?m or more through spin coating.Type: ApplicationFiled: March 31, 2016Publication date: October 20, 2016Inventors: Koji YONEMURA, Yasuo SOMEYA, Deuk Young YOON
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Patent number: 9448443Abstract: A liquid crystal display panel includes switching elements, transparent pixel electrodes, and a transparent common electrode having a predetermined area overlapped with an upper layer of the transparent pixel electrode through an insulating film and driving liquid crystal with the transparent pixel electrode. In plane view, a shading layer covers at least one part of a conductive pattern where a light leakage occurs in front view by an alignment defect of the liquid crystal near a non-permeable conductive pattern disposed in the display region at the time of black display, and has eaves more protruding than the conductive pattern. The transparent common electrode is provided to overlap with the conductive pattern arranged to overlap with the light-shielding layer having the eaves in a side of the liquid crystal and to protrude compared with the light-shielding layer having the eaves in a planar view.Type: GrantFiled: October 3, 2011Date of Patent: September 20, 2016Assignee: Mitsubishi Electric CorporationInventor: Koji Yonemura
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Publication number: 20160223875Abstract: Liquid crystal molecules have a pretilt angle to the left-and-right direction in a plane perpendicular to the up-and-down direction, so that an end part of a first side as one side of a left side and a right side of the liquid crystal molecules is set closer to a backlight than an end part of a second side as the other side. Second edge parts of a black matrix adjacent to an upper side and a lower side of an opening have a straight line shape extending by inclination to mutually the same side in the left-and-right direction, so that an end part of the same side as a first side as one side of the left side and the right side of the second edge parts is positioned above the end part of the same side as the second side as the other side.Type: ApplicationFiled: January 29, 2016Publication date: August 4, 2016Applicant: Mitsubishi Electric CorporationInventors: Koji YONEMURA, Manabu IWAKAWA, Akimasa YUKI, Toshiaki FUJINO, Tetsuya SATAKE, Taroh YOSHINO, Kazunori OKUMOTO