Patents by Inventor Ryoh Kikuchi
Ryoh Kikuchi 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: 20160291358Abstract: A display device (1) includes a display panel (10), a switch liquid crystal panel (20), and a control unit (40). The switch liquid crystal panel (20) includes a transparent electrode (2) provided in an active area (AA) on at least one of a first substrate (21) and a second substrate (22), and a metal line (3) provided outside the active area (AA) on at least one of the first substrate (21) and the second substrate (22), along four sides of the active area (AA).Type: ApplicationFiled: August 13, 2014Publication date: October 6, 2016Inventors: Ryoh KIKUCHI, Takehiro MURAO, Takuto YOSHINO, Hiroshi FUKUSHIMA
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Publication number: 20160286206Abstract: Obtained is a configuration of a stereoscopic display device that allows a viewer to easily correct settings for stereoscopic display. A stereoscopic display device (1) includes: a display panel (10) for displaying an image; a switch liquid crystal panel (20) that is arranged so as to be stacked on the display panel (10); a position sensor for acquiring position information of a viewer; and a control unit for causing the switch liquid crystal panel (20) to display a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction. The control unit has, as operation modes, at least a tracking mode in which, according to the position information, the parallax barrier is moved in the alignment direction and is displayed on the switch liquid crystal panel (20), and a calibration mode for calibration of a reference position of the position information.Type: ApplicationFiled: August 28, 2014Publication date: September 29, 2016Inventors: Takuto YOSHINO, Takehiro MURAO, Hiroshi FUKUSHIMA, Ryoh KIKUCHI
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Publication number: 20160261859Abstract: A configuration of a stereoscopic display device that is capable of reducing luminance variation that occurs when a viewer moves is obtained, by making improvement regarding the angle dependency of luminance. A stereoscopic display device (1) includes: a display panel (10); a switch liquid crystal panel (20); a first polarizing plate (15); a second polarizing plate (24); a position sensor for acquiring position information of a viewer; and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with the position information, and causing the switch liquid crystal panel (20) to display the parallax barrier. The transmitting region has a width greater than a width in the alignment direction of an opening of each of the pixels (110).Type: ApplicationFiled: August 25, 2014Publication date: September 8, 2016Inventors: Takehiro MURAO, Ryoh KIKUCHI, Takuto YOSHINO, Hiroshi FUKUSHIMA
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Publication number: 20160261857Abstract: A stereoscopic display device (1) of the present invention includes a display panel (10), a switch liquid crystal panel (20), a first polarizing plate (15) and a second polarizing plate (24), and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with position information, and causing the switch liquid crystal panel (20) to display the parallax barrier. A first alignment film (216) and a second alignment film (226) of the switch liquid crystal panel (20) are rubbed so that molecule long axes of liquid crystal molecules in the vicinities of the center of a liquid crystal layer (23) in the thickness direction in a state where no voltage is applied are oriented in a direction perpendicular to the alignment direction as viewed in a plan view.Type: ApplicationFiled: August 26, 2014Publication date: September 8, 2016Inventors: Ryoh KIKUCHI, Takehiro MURAO, Takuto YOSHINO, Hiroshi FUKUSHIMA
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Publication number: 20160223827Abstract: A configuration of a stereoscopic display device that is capable of maintaining crosstalk at a low level even when a viewer moves is provided. A stereoscopic display device (1) includes: a display panel (10) for displaying an image; a switch liquid crystal panel (20) that is arranged so as to be stacked on the display panel (10); a position sensor for acquiring position information of a viewer; and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with the position information, and causing the switch liquid crystal panel (20) to display the parallax barrier. The switch liquid crystal panel (20) includes: a liquid crystal layer (23) in which refractive index anisotropy ?n of liquid crystal molecules is 0.Type: ApplicationFiled: August 20, 2014Publication date: August 4, 2016Inventors: Takehiro MURAO, Ryoh KIKUCHI, Takuto YOSHINO, Hiroshi FUKUSHIMA
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Publication number: 20160016396Abstract: A method of manufacturing a layered panel 16 includes steps of: performing a first attaching process to attach an adhesive sheet to a first panel member 110, the first panel member 110 including a panel 11 and a frame-shaped light blocking portion 14, the adhesive sheet 15 being made of ultraviolet curing adhesive and including a main body 15a and a test portion, the main body 15a being for covering a portion of a surface of the first panel member 110 that is on an inner side with respect to the light blocking portion 14, the test portion 15b extending outward from a periphery of the main body 15a and to be on the light blocking portion 14; performing a second attaching process to attach a surface of a second panel member 12 to another surface of the uncured adhesive sheet 15 such that the test portion 15b is projected outward from a periphery of the second panel member 12; applying ultraviolet rays to the adhesive sheet 15; peeling the test portion 15b from the light blocking portion 14; and checking a cureType: ApplicationFiled: February 21, 2014Publication date: January 21, 2016Inventors: Ryoh KIKUCHI, Kenichiroh TSUCHIDA
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Patent number: 9041872Abstract: Provided is a switching liquid crystal panel and a display device that have novel structures that are capable of preventing luminous regions from appearing in the light transmitting parts, in the vicinities of boundaries thereof with the light shielding parts. The switching liquid crystal panel includes a pair of substrates (26a, 26b) having a twisted nematic type liquid crystal layer (24) interposed therebetween, and a plurality of light shield forming electrodes (30) that are formed on at least one of the pair of the substrates (26a, 26b) and that form light shielding parts (40) of a parallax barrier (16) in cooperation with a counter electrode (34) when a voltage is applied, the counter electrode (34) being is opposed to the light shield forming electrodes (30) with the liquid crystal layer (24) interposed therebetween.Type: GrantFiled: July 25, 2011Date of Patent: May 26, 2015Assignee: Sharp Kabushiki KaishaInventors: Ryoh Kikuchi, Hiroshi Fukushima, Tomoo Takatani, Kimitaka Nomura
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Publication number: 20140375914Abstract: The objective is to provide a stereoscopic display device that can be switched among 2D display mode, 3D display mode and mirror mode. The device includes: a display panel (12); a switch liquid crystal panel (14); an absorptive polarizer (16); and a reflective polarizer (22). The switch liquid crystal panel (14) is located closer to the viewer than the display panel (12) is. The absorptive polarizer (16) is located closer to the viewer than the switch liquid crystal panel (14) is. The reflective polarizer (22) is located between the display panel (12) and the switch liquid crystal panel (14). The reflective polarizer (22) has a transmission axis (L6) perpendicular to the transmission axis (L3) of the absorptive polarizer (16) and passes those components of light entering the reflective polarizer (22) that are parallel to the transmission axis (L6) while reflecting those components that are perpendicular to the transmission axis (L6).Type: ApplicationFiled: December 21, 2012Publication date: December 25, 2014Inventors: Takehiro Murao, Ryoh Kikuchi, Takuto Yoshino, Hiroshi Fukushima, Tomoo Takatani
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Patent number: 8872990Abstract: An arrangement with a shared polarizer disposed between two panels capable of displaying a 3D image using parallax barrier techniques is provided, where the quality of a displayed 3D image is prevented from decreasing due to the left-right imbalance in contrast ratio. The arrangement includes: a main panel; a switch panel for displaying a slit image serving as a parallax barrier; a polarizer located closer to the viewed side of the main panel; a polarizer located between the main panel and the switch panel; and a polarizer located closer to the side of the switch panel opposite the side closer to the main panel. The direction of rubbing for one of the alignment films of the switch panel is at an angle relative to the absorption axis of one of the polarizers such that a contrast ratio within a view range of the left and right eyes is equal to or higher than a reference value, the contrast ratio being measured on a visual line corresponding to the transmission axis of one of the polarizers.Type: GrantFiled: July 11, 2011Date of Patent: October 28, 2014Assignee: Sharp Kabushiki KaishaInventors: Kimitaka Nomura, Tomoo Takatani, Hiroshi Fukushima, Ryoh Kikuchi
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Publication number: 20140307188Abstract: In a display device in which a switching panel that displays a stripe image is provided on the viewing side of a main panel so that a three-dimensional image can be displayed, gap unevenness of the switching panel is made hardly visible, whereby appearance quality of the display device is improved. A liquid crystal display device includes: a main panel (2) that displays an image; a switching panel (3) that is provided on a viewing side of the main panel (2) and displays a stripe image as a parallax barrier so as to cause the image displayed on the main panel (2) to be viewed stereoscopically; a polarizing plate (4) that is provided on a viewing side of the switching panel (3) and converts incident light into linearly polarized light; and a retarder (7) that is provided between the switching panel (3) and the polarizing plate (4), converts linearly polarized light into circularly polarized light, and converts circularly polarized light into linearly polarized light.Type: ApplicationFiled: October 25, 2012Publication date: October 16, 2014Inventors: Ryoh Kikuchi, Tomoo Takatani, Hiroshi Fukushima
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Publication number: 20130128163Abstract: Provided is a switching liquid crystal panel and a display device that have novel structures that are capable of preventing luminous regions from appearing in the light transmitting parts, in the vicinities of boundaries thereof with the light shielding parts. The switching liquid crystal panel includes a pair of substrates (26a, 26b) having a twisted nematic type liquid crystal layer (24) interposed therebetween, and a plurality of light shield forming electrodes (30) that are formed on at least one of the pair of the substrates (26a, 26b) and that form light shielding parts (40) of a parallax barrier (16) in cooperation with a counter electrode (34) when a voltage is applied, the counter electrode (34) being is opposed to the light shield forming electrodes (30) with the liquid crystal layer (24) interposed therebetween.Type: ApplicationFiled: July 25, 2011Publication date: May 23, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Ryoh Kikuchi, Hiroshi Fukushima, Tomoo Takatani, Kimitaka Nomura
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Publication number: 20130107148Abstract: An arrangement with a shared polarizer disposed between two panels capable of displaying a 3D image using parallax barrier techniques is provided, where the quality of a displayed 3D image is prevented from decreasing due to the left-right imbalance in contrast ratio. The arrangement includes: a main panel; a switch panel for displaying a slit image serving as a parallax barrier; a polarizer located closer to the viewed side of the main panel; a polarizer located between the main panel and the switch panel; and a polarizer located closer to the side of the switch panel opposite the side closer to the main panel. The direction of rubbing for one of the alignment films of the switch panel is at an angle relative to the absorption axis of one of the polarizers such that a contrast ratio within a view range of the left and right eyes is equal to or higher than a reference value, the contrast ratio being measured on a visual line corresponding to the transmission axis of one of the polarizers.Type: ApplicationFiled: July 11, 2011Publication date: May 2, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Kimitaka Nomura, Tomoo Takatani, Hiroshi Fukushima, Ryoh Kikuchi