Patents by Inventor Takuto Yoshino
Takuto Yoshino 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: 10241341Abstract: Obtained is a configuration of a stereoscopic display device wherein luminance variation and increase of crosstalk can be reduced over a period before and after the switching of the parallax barrier. The stereoscopic display device includes: a display panel for displaying an image with a plurality of pixels; a switch liquid crystal panel that is arranged so as to be stacked on the display panel; 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, with use of a predetermined barrier switching pitch as a minimum unit, and causing the switch liquid crystal panel to display the parallax barrier.Type: GrantFiled: February 25, 2014Date of Patent: March 26, 2019Assignee: Sharp Kabushiki KaishaInventors: Takehiro Murao, Takuto Yoshino, Hiroshi Fukushima
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Patent number: 9906777Abstract: 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: GrantFiled: August 26, 2014Date of Patent: February 27, 2018Assignee: Sharp Kabushiki KaishaInventors: Ryoh Kikuchi, Takehiro Murao, Takuto Yoshino, Hiroshi Fukushima
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Patent number: 9874770Abstract: 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: GrantFiled: August 13, 2014Date of Patent: January 23, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Ryoh Kikuchi, Takehiro Murao, Takuto Yoshino, Hiroshi Fukushima
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Patent number: 9872013Abstract: 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: GrantFiled: August 28, 2014Date of Patent: January 16, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Takuto Yoshino, Takehiro Murao, Hiroshi Fukushima, Ryoh Kikuchi
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Patent number: 9784982Abstract: 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: GrantFiled: August 20, 2014Date of Patent: October 10, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Takehiro Murao, Ryoh Kikuchi, Takuto Yoshino, Hiroshi Fukushima
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Patent number: 9753292Abstract: Provide is a stereoscopic display device that is capable of, while preventing the crosstalk ratio from deteriorating, increasing the brightness during 3D display, switching 2D display and 3D display without decreases in the resolution, and achieving a switching response speed at the same level as that in the parallax barrier method.Type: GrantFiled: July 27, 2012Date of Patent: September 5, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Takehiro Murao, Takuto Yoshino, Hiroshi Fukushima, Tomoo Takatani
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Patent number: 9648311Abstract: A stereoscopic display device is provided where the luminance variation encountered when the parallax barrier is switched is reduced for viewing from a wide region. The stereoscopic display device includes: a display panel that displays an image; a switch liquid crystal panel disposed to overlie the display panel and including a liquid crystal layer; a position sensor that obtains positional information about a viewer; and a control unit that receives the positional information from the position sensor and locally applies to the liquid crystal layer a first voltage for rendering the switch liquid crystal panel translucent and a second voltage for rendering the switch liquid crystal panel non-translucent to display a parallax barrier that depends on the positional information.Type: GrantFiled: February 14, 2014Date of Patent: May 9, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Takuto Yoshino, Takehiro Murao, Hiroshi Fukushima
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Patent number: 9606367Abstract: Disclosed is a stereoscopic display device that can reduce moiré that occurs due to light-shielding areas in the aperture of pixels. The stereoscopic display device includes a display panel and a parallax barrier. The display panel has a plurality of pixels and displays a stereoscopic image. In the parallax barrier, the direction in which transmissive and non-transmissive parts are alternately arranged is the first direction and the lengthwise direction of the non-transmissive parts is the second direction. There is a boundary that extends in the second direction between two pixels next to each other in the first direction. There are light-shielding areas in the aperture of each pixel. There is a space between the boundary and the light-shielding areas. Of two pixels next to each other in the second direction, the light-shielding areas in the aperture of one pixel are shifted in the first direction with respect to the light-shielding areas in the aperture of the other pixel.Type: GrantFiled: October 10, 2013Date of Patent: March 28, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Takuto Yoshino, Takehiro Murao, Hiroshi Fukushima
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Patent number: 9599832Abstract: 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: GrantFiled: December 21, 2012Date of Patent: March 21, 2017Assignee: Sharp Kabushiki KaishaInventors: Takehiro Murao, Ryoh Kikuchi, Takuto Yoshino, Hiroshi Fukushima, Tomoo Takatani
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Patent number: 9588351Abstract: An objective is to provide a stereoscopic display device that can reduce moire occurring when the viewer is not at the optimum viewing position while maintaining the vertical degree of freedom. A parallax barrier (42) includes transparent portions (48) and light-shielding portions (46) arranged alternatingly. Supposing that a first direction is a direction in which the light-shielding portions (46) and the transparent portions (48) are arranged alternatingly and a second direction is a longitudinal direction of the light-shielding portions (46), a boundary portion (52) is present between two adjacent pixels (50) arranged in the first direction and extends in the second direction, and the edges (381, 382) of the light-shielding portions (46) disposed in the first direction have portions crossing a reference line (L) extending in the second direction and fluctuate in a specified cycle along the second direction.Type: GrantFiled: November 26, 2012Date of Patent: March 7, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Takehiro Murao, Takuto Yoshino, Hiroshi Fukushima, Tomoo Takatani
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Publication number: 20170045763Abstract: Provided is a configuration of a stereoscopic display device that can suppress light leakage in inter-wire regions and keep crosstalk to a minimum. A stereoscopic display device includes a display panel, switching liquid crystal panel, location sensor that acquires location information of a viewer, and a controller. The switching liquid crystal panel includes a first substrate and second substrate, a liquid crystal layer, a plurality of segment electrodes arranged with prescribed gaps therebetween along a first direction and each extending in a second direction orthogonal to the first direction, a first insulating film rubbed in a first rubbing direction that is at a 45° to 90° angle to the second direction, a common electrode, and a second alignment film covering the common electrode and rubbed in a second rubbing direction that is orthogonal to the first rubbing direction. The controller changes the potential of the plurality of segment electrodes in accordance with the location information of the viewer.Type: ApplicationFiled: February 26, 2015Publication date: February 16, 2017Applicant: Sharp Kabushiki KaishaInventors: Takehiro MURAO, Ryoh KIKUCHI, Takuto YOSHINO, Hiroshi FUKUSHIMA
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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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Patent number: 9459462Abstract: The objective is to provide a stereoscopic display device that can be switched among 2D display mode, 3D display mode and mirror mode, where 2D display may be realized even while the device is staying in 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 is located closer to the viewer than the display panel is. The absorptive polarizer is located closer to the viewer than the switch liquid crystal panel is. The reflective polarizer is located between the display panel and the switch liquid crystal panel. The reflective polarizer passes those components of light entering the reflective polarizer that are parallel to the transmission axis (L6) while reflecting those components that are perpendicular to the transmission axis. At least one of the substrates (32, 34) includes a transparent region (58) capable of passing light from the display panel.Type: GrantFiled: December 21, 2012Date of Patent: October 4, 2016Assignee: Sharp Kabushiki KaishaInventors: Takehiro Murao, Takuto Yoshino, Hiroshi Fukushima, Tomoo Takatani
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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: 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: 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: 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: 20160195731Abstract: Obtained is a configuration of a stereoscopic display device wherein luminance variation and increase of crosstalk can be reduced over a period before and after the switching of the parallax barrier. The stereoscopic display device includes: a display panel for displaying an image with a plurality of pixels; a switch liquid crystal panel that is arranged so as to be stacked on the display panel; 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, with use of a predetermined barrier switching pitch as a minimum unit, and causing the switch liquid crystal panel to display the parallax barrier.Type: ApplicationFiled: February 25, 2014Publication date: July 7, 2016Applicant: Sharp Kabushiki KaishaInventors: Takehiro MURAO, Takuto YOSHINO, Hiroshi FUKUSHIMA
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Publication number: 20160037155Abstract: A stereoscopic display device is provided where the luminance variation encountered when the parallax barrier is switched is reduced for viewing from a wide region. The stereoscopic display device includes: a display panel that displays an image; a switch liquid crystal panel disposed to overlie the display panel and including a liquid crystal layer; a position sensor that obtains positional information about a viewer; and a control unit that receives the positional information from the position sensor and locally applies to the liquid crystal layer a first voltage for rendering the switch liquid crystal panel translucent and a second voltage for rendering the switch liquid crystal panel non-translucent to display a parallax barrier that depends on the positional information.Type: ApplicationFiled: February 14, 2014Publication date: February 4, 2016Inventors: Takuto YOSHINO, Takehiro MURAO, Hiroshi FUKUSHIMA
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Patent number: 9213189Abstract: The objective is to provide a stereoscopic display device that is capable of preventing a malfunction of the touch panel while maintaining 3D capability. The device includes: a display panel (12); a switch liquid crystal panel (14); a touch panel (20); a driving circuit (16); and an RC circuit (18). The switch liquid crystal panel (14) is located on the front side of the display panel (12) and is capable of forming a parallax barrier (38). The touch panel (20) is located on the front side of the switch liquid crystal panel (14). The driving circuit (16) drives the switch liquid crystal panel (14) to form the parallax barrier (38). The RC circuit (18) is located between the switch liquid crystal panel (14) and the driving circuit (16). The driving circuit (16) drives the switch liquid crystal panel (14) using a voltage with an effective value of 3 volts or more.Type: GrantFiled: February 7, 2013Date of Patent: December 15, 2015Assignee: Sharp Kabushiki KaishaInventors: Takuto Yoshino, Takehiro Murao, Hiroshi Fukushima, Tomoo Takatani