Patents by Inventor Yoshihide Koyama

Yoshihide Koyama 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: 8681288
    Abstract: Provided is a backlight unit that is capable of suppressing an uneven brightness. The backlight unit (2) includes a lower lens sheet (91) and an upper lens sheet (92) that are disposed in an inside area of a frame portion of a frame (4) and that are laminated in this order, and a rim tape (10) attached to the frame portion of the frame (4). The upper lens sheet (92) is fixed in position by a wide portion (10a) of the rim tape (10) being affixed to the upper surface of an end (92b) of the upper lens sheet (92), while the lower lens sheet (91) is held without being affixed to the wide portion (10a) of the rim tape (10).
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: March 25, 2014
    Inventor: Yoshihide Koyama
  • 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
  • Publication number: 20120224120
    Abstract: Provided is a backlight unit that is capable of suppressing an uneven brightness. The backlight unit (2) includes a lower lens sheet (91) and an upper lens sheet (92) that are disposed in an inside area of a frame portion of a frame (4) and that are laminated in this order, and a rim tape (10) attached to the frame portion of the frame (4). The upper lens sheet (92) is fixed in position by a wide portion (10a) of the rim tape (10) being affixed to the upper surface of an end (92b) of the upper lens sheet (92), while the lower lens sheet (91) is held without being affixed to the wide portion (10a) of the rim tape (10).
    Type: Application
    Filed: August 18, 2010
    Publication date: September 6, 2012
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Yoshihide Koyama
  • 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
  • Patent number: 7783059
    Abstract: A body device includes: a plurality of sound sources; a speaker and a headphone for outputting sound signals from those sound sources; and a mode setting unit capable of setting a single mode, in which the sound signals from one sound source are output in response to an operation from a front operation unit, and a dual mode in which, while the sound signals from one sound source are being output from the speaker, the voice signals from another sound source are output from the headphone; an external connection unit for connecting an external DVD device with the outside; and a control unit for controlling a mode setting unit so that the body device may be turned ON in the dual mode when a power ON demand signal from the external DVD device or a rear operation unit is detected.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: August 24, 2010
    Assignee: Clarion Co., Ltd.
    Inventors: Kuniko Yamasaki, Yoshihide Koyama
  • Publication number: 20100149136
    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: Application
    Filed: June 5, 2006
    Publication date: June 17, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroshi Fukushima, Tomoo Takatani, Koji Yabuta, Yoshihide Koyama, Akira Imai
  • Patent number: 7697105
    Abstract: A display device includes a display panel and a parallax barrier bonded together with an adhesive layer made of a light-curing resin (for example, ultraviolet curing resin). The display device allows 3D display or multiple-image display. The parallax barrier includes a pattern-formed light-shielding layer on barrier glass. The parallax barrier has an area that does not include the light-shielding layer on the periphery portions thereof. Thus, with the display device including the parallax barrier and the display panel bonded together, peeling on adhesive planes of the parallax barrier and display panel is less likely to occur.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: April 13, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshihide Koyama, Hiroshi Fukushima
  • Publication number: 20090303157
    Abstract: A display device (1a) of the present invention includes a displaying section (10), an image generating section (2) for generating an image signal, and a parallax barrier aperture array (17), distinction means (3) for judging whether cross talk of an image of another-pixels reaches a level at which the cross talk is perceived by a viewer of an image of self-pixels, and adjustment means (4) for adjusting the pixel signals of the another-pixels so as to eliminate the cross talk, in a case that the distinction means (3) judges the cross talk of the image of the another-pixels reaches to the perceivable level. This provides a display device and a vehicle equipped therewith, both of which display, on a single display screen, different images in a plurality of display directions and thus are capable of providing excellent display environments wherein the viewer of an image displayed in one display direction does not perceive cross talk of an image displayed in another direction.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 10, 2009
    Inventors: Akira Imai, Tomoo Takatani, Hiroshi Fukushima, Koji Yabuta, Yoshihide Koyama
  • Patent number: 7626674
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a parallax barrier with a barrier light-shielding layer patterned on a barrier glass, bonded with an adhesive layer composed of an ultraviolet curing resin, provided with an area without a light-shielding layer on the peripheral portion of the parallax barrier, and a sealing material is arranged between a TFT substrate and a CF substrate with at least a portion thereof overlapping with the area without the light-shielding layer. Thus, peeling on the bonding surfaces between the parallax barrier and the liquid crystal display panel does not easily occur, and the occurrence of display non-uniformity due to strain of the CF substrate is prevented.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: December 1, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshihide Koyama, Hiroshi Fukushima
  • Publication number: 20090225002
    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: Application
    Filed: March 7, 2006
    Publication date: September 10, 2009
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Akira Imai, Tomoo Takatani, Yoshihide Koyama, Hiroshi Fukushima, Koji Yabuta
  • Patent number: 7564983
    Abstract: A play-back device includes a body device including: a playback mode setting unit for selecting a plurality of playback modes such as a CD mode, an AM mode and an FM mode; a front side speaker and a rear side headphone for selecting an arbitrary one of the playback modes to output play-back signals in the arbitrary playback mode; a front operation unit for operations relating to the front side; and a rear operation unit for operations relating to the rear side. Further included is a control unit for not accepting but making ineffective an operation to release a mute/pause state, even if done from the rear operation unit, when it is decided that the front side is in the mute/pause state while the front side and the rear side are in a common playback mode.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: July 21, 2009
    Assignee: Clarion Co., Ltd.
    Inventors: Akira Ibuka, Kuniko Yamasaki, Yoshihide Koyama
  • Publication number: 20090086150
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a parallax barrier with a barrier light-shielding layer patterned on a barrier glass, bonded with an adhesive layer composed of an ultraviolet curing resin, provided with an area without a light-shielding layer on the peripheral portion of the parallax barrier, and a sealing material is arranged between a TFT substrate and a CF substrate with at least a portion thereof overlapping with the area without the light-shielding layer. Thus, peeling on the bonding surfaces between the parallax barrier and the liquid crystal display panel does not easily occur, and the occurrence of display non-uniformity due to strain of the CF substrate is prevented.
    Type: Application
    Filed: June 27, 2006
    Publication date: April 2, 2009
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yoshihide Koyama, Hiroshi Fukushima
  • Publication number: 20090066864
    Abstract: A display device includes a display panel and a parallax barrier bonded together with an adhesive layer made of a light-curing resin (for example, ultraviolet curing resin). The display device allows 3D display or multiple-image display. The parallax barrier includes a pattern-formed light-shielding layer on barrier glass. The parallax barrier has an area that does not include the light-shielding layer on the periphery portions thereof. Thus, with the display device including the parallax barrier and the display panel bonded together, peeling on adhesive planes of the parallax barrier and display panel is less likely to occur.
    Type: Application
    Filed: June 28, 2006
    Publication date: March 12, 2009
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yoshihide Koyama, Hiroshi Fukushima
  • Patent number: 7436738
    Abstract: A body device has a dual mode function and includes: a play-back mode setting unit for selecting a plurality of play-back modes such as a CD mode, an AM mode, an FM mode and so on; and a control unit for controlling the play-back mode setting unit so as to select an arbitrary one of the play-back modes in response to a predetermined operation on the front side or the rear side. When an operation to select and demand the FM mode on the rear side in a dual mode while the front side is in the AM mode, the control unit inhibits the FM mode selection on the rear side so that the AM mode on the front side may not be changed into the FM mode.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: October 14, 2008
    Assignee: Clarion Co., Ltd.
    Inventors: Kuniko Yamasaki, Yoshihide Koyama
  • Patent number: 7199845
    Abstract: A 2D/3D switching type liquid crystal display device includes: (i) display liquid crystal panel (10) for generating an image in accordance with input image data; (ii) patterned retardation plate (20) for rendering a certain viewing angle to a display image during 3D display, so as to provide a 3D effect; and (iii) a switching liquid crystal panel (30) for switching 2D display and 3D display by activating and deactivating the effect of the parallax barrier means. The patterned retardation plate (20) and the switching liquid crystal panel (30) respectively have wider active areas than an active area of the display image generating means. With this, the 2D/3D switching liquid crystal display device allows for a viewing angle in 2D as wide as a viewing angle of 2D-only display.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: April 3, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshihide Koyama, Shinichi Miyazaki
  • Publication number: 20050285997
    Abstract: A 2D/3D switching type liquid crystal display device includes: (i) display liquid crystal panel (10) for generating an image in accordance with input image data; (ii) patterned retardation plate (20) for rendering a certain viewing angle to a display image during 3D display, so as to provide a 3D effect; and (iii) a switching liquid crystal panel (30) for switching 2D display and 3D display by activating and deactivating the effect of the parallax barrier means. The patterned retardation plate (20) and the switching liquid crystal panel (30) respectively have wider active areas than an active area of the display image generating means. With this, the 2D/3D switching liquid crystal display device allows for a viewing angle in 2D as wide as a viewing angle of 2D-only display.
    Type: Application
    Filed: June 26, 2003
    Publication date: December 29, 2005
    Inventors: Yoshihide Koyama, Shinichi Miyazaki
  • Patent number: 6824935
    Abstract: The substrate having colored layers of the present invention includes: a substrate; a reflection layer formed on the substrate; and colored layers of different colors formed on the reflection layer and including a plurality of pixel regions, wherein each of the plurality of pixel regions includes a plurality of colorless regions that are substantially colorless.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: November 30, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Tanaka, Yoshihide Koyama, Kazuya Yoshimura
  • Publication number: 20040125694
    Abstract: A body device includes: a plurality of sound sources; a speaker and a headphone for outputting sound signals from those sound sources; and a mode setting unit capable of setting a single mode, in which the sound signals from one sound source are output in response to an operation from a front operation unit, and a dual mode in which, while the sound signals from one sound source are being output from the speaker, the voice signals from another sound source are output from the headphone; an external connection unit for connecting an external DVD device with the outside; and a control unit for controlling a mode setting unit so that the body device may be turned ON in the dual mode when a power ON demand signal from the external DVD device or a rear operation unit is detected.
    Type: Application
    Filed: September 25, 2003
    Publication date: July 1, 2004
    Applicant: Clarion Co., Ltd.
    Inventors: Kuniko Yamasaki, Yoshihide Koyama
  • Publication number: 20040125703
    Abstract: A play-back device includes a body device including: a playback mode setting unit for selecting a plurality of playback modes such as a CD mode, an AM mode and an FM mode; a front side speaker and a rear side headphone for selecting an arbitrary one of the playback modes to output play-back signals in the arbitrary playback mode; a front operation unit for operations relating to the front side; and a rear operation unit for operations relating to the rear side. Further included is a control unit for not accepting but making ineffective an operation to release a mute/pause state, even if done from the rear operation unit, when it is decided that the front side is in the mute/pause state while the front side and the rear side are in a common playback mode.
    Type: Application
    Filed: September 26, 2003
    Publication date: July 1, 2004
    Applicant: Clarion Co., Ltd.
    Inventors: Akira Ibuka, Kuniko Yamasaki, Yoshihide Koyama
  • Patent number: 6750938
    Abstract: A liquid crystal display device includes: a first substrate; a second substrate opposing the first substrate via a large number of columnar spacers therebetween, the columnar spacers being fixed on the first substrate; and a liquid crystal layer provided between the first substrate and the second substrate. The liquid crystal display device has a display area for displaying an image, and a non-display area adjacent to the display area. In the display area of the liquid crystal display device, a plurality of display electrodes that are used when applying a voltage across the liquid crystal layer are provided at an interval on one side of the first substrate that is closer to the liquid crystal layer, whereas in the non-display area, a plurality of peripheral electrodes are provided with substantially no interval therebetween on the side of the first substrate that is closer to the liquid crystal layer.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: June 15, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshihide Koyama