Patents by Inventor Shimon Itakura

Shimon Itakura 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: 7564516
    Abstract: A liquid crystal display device of the present invention includes a liquid crystal display panel, and a backlight arranged on a back surface of the liquid crystal display panel. The backlight includes a plurality of rod-shaped light sources, electrode fittings for holding the rod-shaped light sources, and side wall plates covering the electrode fittings. The electrode fittings are connected to a connection portion extending in the parallel-arrangement direction of the rod-shaped light sources. The side wall plate includes a plurality of projecting members arranged in parallel to each other in the extending direction of the connection portion. The connection portion includes positions which are brought into contact with the projecting members and portions which are not brought into contact with the projecting members. By adopting the above-mentioned constitution, the liquid crystal display device can reduce squeals and the like.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: July 21, 2009
    Assignees: IPS Alpha Technology, Ltd., Hitachi Display Devices, Ltd.
    Inventors: Yuji Azuma, Shimon Itakura
  • Patent number: 7538833
    Abstract: A subject of the present invention is to provide a liquid crystal display device in which the reliability of electrical connection between electrodes and electrode fittings can be improved even if there are variations in diameter of the bar light sources arranged in the back light.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: May 26, 2009
    Assignees: IPS Alpha Technology, Ltd., Hitachi Displays Devices
    Inventors: Yuji Azuma, Shiro Ueda, Shimon Itakura
  • Publication number: 20090109374
    Abstract: (Object) To provide a liquid crystal display device where supports for fluorescent lamps can be prevented from vibrating without affecting the ease of attachment of the supports for fluorescent lamps to the frame for the backlight. (Means for Achieving Object) A liquid crystal display device having: a liquid crystal display panel; and a backlight having a light source for illuminating the liquid crystal display panel is characterized in that said backlight comprises at least a number of fluorescent lamps in rod form aligned in a plane facing said liquid crystal display panel, supports for fluorescent lamps for supporting the fluorescent lamps in rod form, and a frame to which the supports for fluorescent lamps are secured, and said supports for fluorescent lamps have an engaging portion for insertion into a hole created in said frame and the surface of said supports for fluorescent lamps where said engaging portion is formed has protrusions.
    Type: Application
    Filed: October 22, 2008
    Publication date: April 30, 2009
    Inventors: Masaki Tsubokura, Shimon Itakura
  • Patent number: 7525627
    Abstract: A display device includes a display panel, a lower frame arranged in the rear of the display panel when viewed from a viewer, and at least one printed circuit board arranged on or above a flat plane of the lower frame. In this display device, the lower frame carries plural positioning projections. They are located outside of a region, where the printed circuit board is arranged, at positions facing each other with the interposition of the region, and arise from the flat plane of the lower frame toward the printed circuit board. Distal portions of the positioning projections protrude from, and bend away from the printed circuit board arranged on or above the lower frame.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: April 28, 2009
    Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.
    Inventors: Yuji Azuma, Masaki Tsubokura, Shunsuke Morishita, Shimon Itakura, Seigo Abo
  • Publication number: 20090059113
    Abstract: (Object) To provide a liquid crystal display device where an end portion of a wire connected to a power supply controlling circuit substrate via a connector can be secured even when the wire is in such a state as not to be coupled with the above described power supply controlling circuit substrate.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 5, 2009
    Inventors: Masaki Tsubokura, Shimon Itakura
  • Publication number: 20080225198
    Abstract: A liquid crystal display device of the present invention includes a liquid crystal display panel, and a backlight arranged on a back surface of the liquid crystal display panel. The backlight includes a plurality of rod-shaped light sources, electrode fittings for holding the rod-shaped light sources, and side wall plates covering the electrode fittings. The electrode fittings are connected to a connection portion extending in the parallel-arrangement direction of the rod-shaped light sources. The side wall plate includes a plurality of projecting members arranged in parallel to each other in the extending direction of the connection portion. The connection portion includes positions which are brought into contact with the projecting members and portions which are not brought into contact with the projecting members. By adopting the above-mentioned constitution, the liquid crystal display device can reduce squeals and the like.
    Type: Application
    Filed: February 22, 2008
    Publication date: September 18, 2008
    Inventors: Yuji Azuma, Shimon Itakura
  • Publication number: 20080204628
    Abstract: An object of the present invention is to provide a liquid crystal display device including a back light in which an electrode support member can be reliably arranged on the base side without concern for thermal expansion.
    Type: Application
    Filed: February 21, 2008
    Publication date: August 28, 2008
    Inventors: Yuji Azuma, Masaki Tsubokura, Shimon Itakura, Shiro Ueda
  • Publication number: 20080204629
    Abstract: A subject of the present invention is to provide a liquid crystal display device in which the reliability of electrical connection between electrodes and electrode fittings can be improved even if there are variations in diameter of the bar light sources arranged in the back light.
    Type: Application
    Filed: February 27, 2008
    Publication date: August 28, 2008
    Inventors: Yuji AZUMA, Shiro Ueda, Shimon Itakura
  • Publication number: 20080192171
    Abstract: The present invention provides a liquid crystal display device which can enhance display quality and reliability by preventing the intrusion of foreign materials to a display screen of a liquid crystal display panel thus preventing the adhesion of the foreign materials to the display screen of the liquid crystal display panel. On an upper surface of a peripheral portion of a split mold frame housing a liquid crystal display panel, rubber cushions which are split in four are arranged at corner portions of the peripheral portion in an adhesive manner. With respect to the split portions of the rubber cushions at the corner portion, on a long-side mold frame, extending portions formed by extending both end portions of the long-side rubber cushion larger than a predetermined length are integrally formed and are arranged in an adhesive manner. On a short-side mold frame, a short-side rubber cushion having a predetermined length is arranged.
    Type: Application
    Filed: February 8, 2008
    Publication date: August 14, 2008
    Inventors: Yuji Azuma, Masaki Tsubokura, Shimon Itakura, Seigo Abo
  • Patent number: 7408599
    Abstract: A display device includes a reflector having a flat bottom surface. A leg portion of a support member which supports a light diffusion plate is mounted on the reflector in an erected manner in a state that the leg portion is allowed to pass through a through hole formed in the reflector and a through hole formed in a housing. Further, in fixing a printed circuit board on a back surface side of the housing, when the leg portion is present in the inside of a region of the back surface side of the housing to which the printed circuit board is fixed, a through hole is formed in a region of the printed circuit board which is overlapped to the leg portion, and the leg portion is allowed to pass through the through hole.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: August 5, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaki Tsubokura, Shimon Itakura
  • Publication number: 20080143919
    Abstract: In a joint portion of a corner portion at which a raised portion of a side wall portion of a reflection sheet which is mounted on a back surface plate and a side wall portion of a side mold frame intersect each other, an end portion of the side mold frame is formed in a state that the end portion of the side mold frame overlaps the side wall portion of the reflection sheet. Due to such a constitution, a gap which is formed by a displacement of the reflection sheet is closed and hence, it is possible to suppress the intrusion of dusts into the inside of a liquid crystal display device.
    Type: Application
    Filed: December 14, 2007
    Publication date: June 19, 2008
    Inventors: Yuji AZUMA, Masaki TSUBOKURA, Shimon ITAKURA
  • Publication number: 20070268444
    Abstract: A display device includes a display panel, a lower frame arranged in the rear of the display panel when viewed from a viewer, and at least one printed circuit board arranged on or above a flat plane of the lower frame. In this display device, the lower frame carries plural positioning projections. They are located outside of a region, where the printed circuit board is arranged, at positions facing each other with the interposition of the region, and arise from the flat plane of the lower frame toward the printed circuit board. Distal portions of the positioning projections protrude from, and bend away from the printed circuit board arranged on or above the lower frame.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 22, 2007
    Inventors: Yuji Azuma, Masaki Tsubokura, Shunsuke Morishita, Shimon Itakura, Seigo Abo
  • Publication number: 20070229726
    Abstract: In a liquid crystal display device, a support member for supporting a liquid crystal display panel and a reflection member are fixed to a lower frame with screws at different positions respectively thus preventing the deformation of the lower frame of the liquid crystal display device. A liquid crystal display device includes a liquid crystal display panel; a support member which supports an outer peripheral portion of the liquid crystal display panel; a light source and a reflection member which are arranged in a region which is overlapped to a display screen of the liquid crystal display panel; and a frame member which is arranged behind the light source as viewed from the liquid crystal display panel. In such a constitution, the frame member includes a folded portion which is folded toward the liquid crystal display panel side outside a display region of the liquid crystal display panel.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 4, 2007
    Inventors: Yuji Azuma, Masaki Tsubokura, Shunsuke Morishita, Shimon Itakura, Seigo Abo
  • Publication number: 20070035946
    Abstract: In a liquid crystal TV, there is provided a direct back light for increasing brightness in the vicinity of the center of a screen. Plural fluorescent tubes are used for backlight, and the respective two fluorescent tubes are paired and driven. The arrangement intervals of the respective pairs are made smallest in the vicinity of the center of the screen to increase the brightness in the vicinity of the center of the screen. The use of the paired fluorescent tubes is to alleviate a variation of the brightness in each of the fluorescent tubes.
    Type: Application
    Filed: August 10, 2006
    Publication date: February 15, 2007
    Inventors: Takayuki Ota, Shimon Itakura, Naotoshi Sumiya
  • Publication number: 20070008240
    Abstract: The present invention aims at the lowering of an image quality of an outer peripheral portion of an image display region. For this end, in a display device in which a plurality of display panels are arranged from a front side to a depth side in an overlapped manner and an image is displayed on the respective display panels, the respective display panels have regions which allow the image to be displayed thereon (image display regions) broadened toward the depth-side display panel from the front-side display panel.
    Type: Application
    Filed: July 7, 2006
    Publication date: January 11, 2007
    Inventors: Nagatoshi Kurahashi, Takayuki Ota, Shimon Itakura
  • Publication number: 20060268203
    Abstract: The present invention prevents a displayed three-dimensional stereoscopic image from being darkened in a three-dimensional display device of a DFD type. The present invention provides a three-dimensional display device in which at least one of a plurality of display panels is formed of a display panel having pixels each of which includes color filters having the higher transmissivity than color filters (basic color filters) which express colors of an image or transparent windows.
    Type: Application
    Filed: May 26, 2006
    Publication date: November 30, 2006
    Inventors: Nagatoshi Kurahashi, Takayuki Ota, Shimon Itakura, Ryutato Oke
  • Publication number: 20060244891
    Abstract: A display device includes a reflector having a flat bottom surface. A leg portion of a support member which supports a light diffusion plate is mounted on the reflector in an erected manner in a state that the leg portion is allowed to pass through a through hole formed in the reflector and a through hole formed in a housing. Further, in fixing a printed circuit board on a back surface side of the housing, when the leg portion is present in the inside of a region of the back surface side of the housing to which the printed circuit board is fixed, a through hole is formed in a region of the printed circuit board which is overlapped to the leg portion, and the leg portion is allowed to pass through the through hole.
    Type: Application
    Filed: April 25, 2006
    Publication date: November 2, 2006
    Inventors: Masaki Tsubokura, Shimon Itakura