Patents by Inventor Tomoo Takatani

Tomoo Takatani 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).

  • Patent number: 8741089
    Abstract: A method for fabricating a display device 1 includes a first step of attaching a display panel and a first substrate member to each other with a first adhesive sandwiched between the display panel and the first substrate member, and a second step of attaching a second substrate member to the first substrate member on a surface of the first substrate member opposite to the display panel with a second adhesive sandwiched between the first and second substrate members, where the second step is carried out subsequently to the first step. The second adhesive used in the second step has a glass transition point higher than a glass transition point of the first adhesive.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: June 3, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenichiro Tsuchida, Tomoo Takatani, Hiroshi Fukushima
  • Patent number: 8687273
    Abstract: In an image display device having a parallax barrier element, a bright display with a broad viewing range can be realized. The image display device according to the present invention includes: a display panel having a first group of pixels for displaying a first image and a second group of pixels for displaying a second image; and a parallax barrier element for separating display light emitted from the first group of pixels and display light emitted from the second group of pixels, the parallax barrier element including a plurality of light-shielding portions and a plurality of light-transmitting portions which are alternately positioned within the same plane. The parallax barrier element includes converging elements respectively provided for the plurality of light-transmitting portions.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: April 1, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Fukushima, Koji Yabuta, Tomoo Takatani
  • Publication number: 20130293795
    Abstract: A liquid crystal display device includes: a main panel that displays images; a switch panel arranged to be opposed to the main panel, the switch panel being capable of switching a mode between a two-dimensional mode that causes an image displayed on the main panel to be viewed as a two-dimensional image and a three-dimensional mode that causes the image to be viewed stereoscopically; a luminance control section that changes a luminance of the main panel upon mode switching by the switch panel; and a vision correction unit that makes luminance changes in the main panel hardly visible on a viewing side upon mode switching by the switch panel.
    Type: Application
    Filed: December 16, 2011
    Publication date: November 7, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takehiro Murao, Hiroshi Fukushima, Tomoo Takatani
  • Publication number: 20130235097
    Abstract: A stereoscopic display device includes: a parallax barrier in which light transmission parts that transmit light and light shielding parts that block light are formed alternately, and a display panel that displays a stereoscopic image. A plurality of pixels for displaying the stereoscopic image are formed on the display panel. Each pixel includes a plurality of color forming subpixels that contribute to the color formation of the stereoscopic image, and a contrasting subpixel that contributes to the contrast of the stereoscopic image. In each pixel, the contrasting subpixel is positioned at both ends of the pixel in a direction in which the light transmission parts and the light shielding parts are arranged alternately. In each pixel that overlaps the light shielding part when the display panel is viewed from front, the contrasting subpixel is positioned at both ends of the light shielding part.
    Type: Application
    Filed: November 17, 2011
    Publication date: September 12, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Makoto Eguchi, Shinya Yamasaki, Akira Imai, Tomoo Takatani
  • Publication number: 20130201417
    Abstract: A display device 10 includes a liquid crystal panel 11 and a parallax barrier 12. The liquid crystal panel 11 includes pixels PX linearly arranged in at least one direction and light blocking sections 11f each arranged between adjacent pixels PX. The parallax barrier 12 faces the liquid crystal panel 11 and is configured to separate an image displayed on the pixels PX by parallax. The parallax barrier 12 includes barrier sections BA and barrier openings BO. The barrier sections BA are arranged in the arrangement direction of the pixels and configured to block light. The barrier openings BO are each arranged between adjacent barrier sections BA and allow the light to pass therethrough. Each barrier section BA has a dimension measured in the arrangement direction that satisfies Expression (1), in which Wb (?m) is the dimension of each barrier section, A (?m) is a dimension of each pixel, and B (?m) is a dimension of each light blocking section measured in the arrangement direction.
    Type: Application
    Filed: October 6, 2011
    Publication date: August 8, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takehiro Murao, Hiroshi Fukushima, Takuto Yoshino, Tomoo Takatani
  • Publication number: 20130128163
    Abstract: 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: Application
    Filed: July 25, 2011
    Publication date: May 23, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Ryoh Kikuchi, Hiroshi Fukushima, Tomoo Takatani, Kimitaka Nomura
  • Publication number: 20130107148
    Abstract: 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: Application
    Filed: July 11, 2011
    Publication date: May 2, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kimitaka Nomura, Tomoo Takatani, Hiroshi Fukushima, Ryoh Kikuchi
  • Publication number: 20130068379
    Abstract: A method for fabricating a display device 1 includes a first step of attaching a display panel and a first substrate member to each other with a first adhesive sandwiched between the display panel and the first substrate member, and a second step of attaching a second substrate member to the first substrate member on a surface of the first substrate member opposite to the display panel with a second adhesive sandwiched between the first and second substrate members, where the second step is carried out subsequently to the first step. The second adhesive used in the second step has a glass transition point higher than a glass transition point of the first adhesive.
    Type: Application
    Filed: May 13, 2011
    Publication date: March 21, 2013
    Inventors: Kenichiro Tsuchida, Tomoo Takatani, Hiroshi Fukushima
  • Publication number: 20130033452
    Abstract: Disclosed is a display device (50a) that includes a display panel (30) for displaying an image, a touch panel (40) of electrostatic capacitance coupling type that is disposed so as to face the display panel (30), and an adhesive layer (45) that is disposed between the display panel (30) and the touch panel (40) and that bonds the display panel (30) and the touch panel (40) to each other. The adhesive layer (45) is provided with a shield pattern (46a) that is configured to prevent electrical noise generated in the display panel (30) from affecting the touch panel (40). According to this configuration, it becomes possible to prevent the increase in the device thickness, and to prevent a decrease in the position detection accuracy of the touch panel.
    Type: Application
    Filed: January 17, 2011
    Publication date: February 7, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroshi Fukushima, Tomoo Takatani
  • Publication number: 20120327005
    Abstract: A display device includes a touch panel and displays stereoscopic images with reducing its thickness and weight. The display device includes a liquid crystal display panel 20, a switching liquid crystal panel 30 and a touch panel 50. The switching liquid crystal panel 30 is provided on a display surface side of the display panel 20 and switches a display mode between two-dimensional display and three-dimensional display. The touch panel 50 is provided on the display surface side of the display panel 20. The touch panel 50 and the switching liquid crystal panel 30 commonly include one common board 32 and are configured as one component. A touch panel transparent electrode 51 and a switching liquid crystal panel transparent electrode 33 are provided on the common board 32. The switching liquid crystal panel transparent electrode 33 applies a voltage to liquid crystals of the switching liquid crystal panel 30.
    Type: Application
    Filed: February 16, 2011
    Publication date: December 27, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroshi Hamada, Akira Imai, Tomoo Takatani
  • Patent number: 8330674
    Abstract: A multiplex image display device prevents onscreen input buttons from appearing at the same positions. A “command area” refers to an area of the display screen where the user can enter a command for manipulating one of images being simultaneously displayed on the single display section for individual viewing from different directions. In the multiplex image display device, the positioning control section controls the positioning of the command areas so that a command area for one of the images being simultaneously displayed on the display section is displayed at a different (i.e., non-overlapping) position on the display section from a command area for another one of such images.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: December 11, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Imai, Tomoo Takatani, Yoshihide Koyama, Hiroshi Fukushima, Koji Yabuta
  • Patent number: 8184145
    Abstract: In a SW-LCD, an orienting film is divided into first and second regions having different directions of orientation, and a transparent electrode film is also patterned so as to be divided into regions respectively corresponding to the first and second regions. In the first region, a viewing angle in right and left directions is controlled. In the second region, a viewing angle in upper and lower directions is controlled. With this, a display device is realized which makes it possible to switch between a wide viewing angle display mode and a narrow viewing angle display mode, which controls a viewing angle in both upper and lower directions and in right and left directions in the narrow viewing angle display mode, and which makes it possible to prevent an image from being seen obliquely from the right and left directions and from the upper and lower directions.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: May 22, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Koji Yabuta, Hiroshi Fukushima, Tomoo Takatani
  • Patent number: 8149358
    Abstract: An ATM of the present invention includes a liquid crystal display panel having, between two transparent substrates, (i) an image forming layer including at least a liquid crystal layer and a pixel section in which RGB pixels are arranged in a matrix manner, and (ii) a plurality of barriers (16) for splitting a display image formed by the image forming layer into a plurality of images each having a specific viewing angle. The plurality of barriers are provided so as to face the image forming layer. The plurality of barriers (16) are extended in a horizontal direction (lateral direction) parallel to the surfaces of the transparent substrates, and provided at substantially regular intervals in a direction perpendicular to the horizontal direction, parallel to the surfaces of the transparent substrates (i.e., in a longitudinal direction).
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: April 3, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoo Takatani, Akira Imai, Hiroshi Fukushima, Koji Yabuta
  • Publication number: 20120062823
    Abstract: Provided is a liquid crystal display device having a liquid crystal layer of which the thickness does not easily change even in the case that the liquid crystal display device has an air-gapless structure. The liquid crystal display device includes, in this order toward a display surface: a first substrate; a liquid crystal layer; and a second substrate. The second substrate contains, in this order toward the display surface, a polarizer, an interlayer including an adhesive layer, and a protective plate. The polarizer and the protective plate are in close contact with each other via the interlayer. The adhesive layer contains a material that has an elastic modulus of not higher than 1.0×105 Pa.
    Type: Application
    Filed: February 4, 2010
    Publication date: March 15, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomoo Takatani, Hiroshi Fukushima
  • Patent number: 8134544
    Abstract: In a display device, when a first image is an absolute white image, a direction in which a luminance is maximum is regarded as a main viewing direction for the first image. A luminance Ld in the main viewing direction for the first image in cases where the first image is an absolute black image and other image is an absolute white image, and a luminance Lb in the main viewing direction for the first image in cases where the first image and the other image are absolute black images satisfy a relationship represented by Formula (1): (Ld?Lb)/Lb?2.5??(1). This makes it possible to realize a display device, which is capable of displaying different images to a plurality of different viewpoints and has an improved function of separating the images in the different display directions.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: March 13, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Fukushima, Tomoo Takatani, Koji Yabuta, Yoshihide Koyama, Akira Imai
  • Publication number: 20120057229
    Abstract: Provided is a display apparatus that can operate both in a portrait mode and a landscape mode, and that exhibits high front brightness and excellent resolution in both planar image display (2D display) and stereoscopic image display (3D display). The display apparatus of the present invention is a display apparatus provided with a display panel including a plurality of pixel areas, a parallax barrier disposed on one side of the display panel, and a lenticular lens disposed on the other side of the display panel. The parallax barrier is provided with a light-blocking sections and a light-transmitting section along a row direction or a column direction of the pixel areas. The lenticular lens includes a plurality of cylindrical lenses arrayed in the row direction or the column direction of the pixel areas. The array direction of the light-blocking sections and the light-transmitting sections is perpendicular to the array direction of the cylindrical lenses.
    Type: Application
    Filed: December 22, 2009
    Publication date: March 8, 2012
    Inventors: Ryo Kikuchi, Hiroshi Fukushima, Tomoo Takatani
  • Patent number: 8120718
    Abstract: A parallax barrier device includes a pair of transparent-electrode substrates each provided with a transparent electrode. A barrier light-shielding part and a light-transmitting part are formed in a gap between the pair of transparent-electrode substrates. A liquid crystal layer is formed in the barrier light-shielding part. A resin layer having the property of transmitting light is formed in the light-transmitting part. The barrier light-shielding part separates light for a first image viewed from a first direction and light for a second image viewed from a second direction different from the first direction. The light-transmitting part transmits the light for the first image and the light for the second image.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: February 21, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Fukushima, Tomoo Takatani, Masakazu Wada
  • Patent number: 8094103
    Abstract: A control section of a portable phone controls a viewing-angle changing section that changes a viewing angle of an image display section-and controls the viewing angle of the image display section on the basis of a status of use of various devices. The control section includes: a device-in-use detecting section to detect use of the devices; a storage section to store a device/viewing-angle matching table containing a correspondence relationship between a device to be used and a viewing angle; a viewing-angle retrieving section to retrieve, from the table, a viewing angle for the device detected being in use by the device-in-use detecting section; and a viewing-angle control section to control the viewing-angle changing section on the basis of the viewing angle retrieved by the viewing-angle retrieving section. The foregoing allows the viewing angle to be controlled automatically on the basis of the status of use, with a few settings.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: January 10, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Imai, Tomoo Takatani, Koji Yabuta, Hiroshi Fukushima
  • Patent number: 8031273
    Abstract: A first transparent electrode film, which is a component of a SW-LCD for viewing angle control, is used as a touch panel. When a contacting object contacts the surface of the first transparent electrode film, a position detector detects currents flowing from plural parts of the first transparent electrode film so as to detect the contacting position of the contacting object, with reference to the detection result. With this, it is possible to provide a built-in touch sensor display device which is thin, lightweight, and low-cost, a viewing angle control device, and an electronic device.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: October 4, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Koji Yabuta, Hiroshi Fukushima, Tomoo Takatani, Akira Imai
  • Publication number: 20110199348
    Abstract: The present invention provides a display device and a manufacturing method thereof with which driver cracks caused by a fall or the like can be suppressed. The display device according to the present invention includes: a display panel; a driver for driving the display panel; a substrate disposed on a display surface side of the display panel; and an adhesive layer for adhering the display panel and the substrate to each other. The driver is provided on an end portion of the display panel between the display panel and the substrate, and a resin member for absorbing an impact is provided between the driver and the substrate.
    Type: Application
    Filed: July 8, 2009
    Publication date: August 18, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomoo Takatani, Hiroshi Fukushima, Takayuki Yamada