Patents by Inventor Masaki Tsubokura

Masaki Tsubokura 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).

  • Publication number: 20140055714
    Abstract: Provided is a liquid crystal display device with a touch panel, including a fixing member (5A) for fixing the liquid crystal display panel (2) and the backlight unit (4) to each other. The fixing member (5A) includes: a first end portion (51) attached to a peripheral edge portion of the display surface (2a) of the liquid crystal display panel (2), the peripheral edge portion being devoid of the adhesive layer (6); a second end portion (52) attached to an outer surface of the backlight unit (4); and a non-adhesive portion (53) located between the first end portion (51) and the second end portion (52), the non-adhesive portion (53) being brought into contact with the outer surface of the backlight unit (4) and prevented from adhering to the outer surface.
    Type: Application
    Filed: August 20, 2013
    Publication date: February 27, 2014
    Applicant: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki TSUBOKURA, Takeki SATO, Naoki IWASAKI
  • Patent number: 8659721
    Abstract: A liquid crystal display device capable of efficiently obtaining a high brightness with reduced unevenness in brightness using a single light-emitting section is provided. The liquid crystal display device includes: a liquid crystal panel for controlling display by changing orientation of a liquid crystal composition; a single cylindrical light-source section (634); and a reflecting section (636) provided so that the single cylindrical light-source section is sandwiched between the reflecting section and the liquid crystal panel, for reflecting the light emitted from the single cylindrical light-source section (634) toward the liquid crystal panel, in which at least a part of a sectional shape of a reflecting surface of the reflecting section (636) in a cross section perpendicular to an axial direction of the single cylindrical light-source section (634) is formed based on a parabola whose focal point is a position of the single cylindrical light source section (634).
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: February 25, 2014
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshiyuki Amimoto, Masaki Tsubokura, Tomohiro Maeyama
  • Publication number: 20130187842
    Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.
    Type: Application
    Filed: March 12, 2013
    Publication date: July 25, 2013
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Patent number: 8384843
    Abstract: An object of the invention is to reduce the effect of moisture on the inside of a liquid crystal display device. The liquid crystal display device includes a liquid crystal display panel in which a display surface including a display area is disposed upright, a first frame including an aperture opposed to the display area, disposed leaving a space between it and the display surface of the liquid crystal display panel, and a rail-shaped member extending in a horizontal direction affixed to the display surface of the liquid crystal display panel, below the display area, in such a way that it does not come into contact with the first frame.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: February 26, 2013
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Masaki Tsubokura
  • Patent number: 8384845
    Abstract: The side surface of the light guide plate includes an incident surface which faces the light source unit in an opposed manner, and a fixing surface which is directed in the left-and-right direction orthogonal to the top-and-bottom direction which is the direction along which the light source unit and the incident surface each other in an opposed manner. An engaging portion which is engageable with a lower frame is formed on the fixing surface or an edge portion which forms the fixing surface. The engaging portion is configured to allow a change of a distance between the incident surface and the lower frame due to expansion or shrinkage of the light guide plate while restricting the movement of the light guide plate in the top-and-bottom direction.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: February 26, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshifumi Sekiguchi, Yoshiro Mikami, Ikuo Hiyama, Naoki Iwasaki, Masaki Tsubokura
  • Patent number: 8228457
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight including a light source for irradiating the liquid crystal display panel, in which the backlight includes at least a plurality of linear fluorescent lamps arranged in parallel in a plane facing the liquid crystal display panel, fluorescent lamp supporting bases supporting the linear fluorescent lamps, and a frame to which the fluorescent lamp supporting bases are fixed, the fluorescent lamp supporting bases each include a fluorescent lamp supporting member directly supporting the linear fluorescent lamp and a fixing portion fixed to the frame, and a recess is formed in the frame at a portion just behind the fluorescent lamp supporting member.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: July 24, 2012
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takeki Sato, Masaki Tsubokura
  • Patent number: 8206021
    Abstract: A liquid crystal display device including a liquid crystal display panel, a backlight chassis arranged on one surface side of the liquid crystal display panel, and a control circuit board mounted on a surface of the backlight chassis on a side opposite to a surface facing the liquid crystal display panel includes a plurality of fluorescent tubes arranged on a surface side of the backlight chassis facing the liquid crystal display panel, a light source arranged on the control circuit board, and a light guide guiding the light from the light source to the surface side of the backlight chassis facing the liquid crystal display panel.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: June 26, 2012
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Masaki Tsubokura
  • Publication number: 20120113072
    Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.
    Type: Application
    Filed: January 19, 2012
    Publication date: May 10, 2012
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Ryutaro Oke, Kazunori Ojima, Masaki Tsubokura, Masashi Baba, Yasuhiko Yamagishi, Masahiro Tanaka, Yuuichi Takenaka, Shinji Yasukawa, Kikuo Ono
  • Patent number: 8164712
    Abstract: A liquid crystal display device includes a backlight device, a liquid crystal panel and a light source unit. The light source unit includes a case having an opening surface, a fluorescent tube, an electric holder, and a cover member. The cover member includes a shield plate, a fixed groove and an overhanging portion, wherein the overhanging portion is provided at an edge of the fixed groove and on a side of the liquid crystal panel with respect to the fluorescent tube which includes a portion which extends through the fixed groove. A portion of the cover member includes a protrusion which is a separate member from the overhanging portion and which extends more toward the liquid crystal panel than a surface portion of the overhanging portion.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: April 24, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshifumi Sekiguchi, Yoshinori Aono, Masaki Tsubokura
  • Patent number: 8089577
    Abstract: An object of the invention is to provide a liquid crystal display device having a so-called direct backlight where the interval between a number of rod light sources can be reduced, as well as a liquid crystal display device where the liquid crystal display panel and the backlight can be provided close to each other and the thickness of the module can be reduced. The liquid crystal display device is provided with a liquid crystal display panel and a backlight provided on the rear surface of this liquid crystal display panel, and the above described backlight is provided with a number of rod light sources aligned in a plane which faces said liquid crystal display panel and electrode supports for supporting the electrodes of the rod light sources on the same pole, which are provided on the same side of the rod light sources, together. The above-described electrode supporting the electrodes on the same pole together are formed of at least a separate first electrode support and second electrode support.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: January 3, 2012
    Assignee: IPS Alpha Technology, Ltd.
    Inventor: Masaki Tsubokura
  • Patent number: 8068193
    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: Grant
    Filed: February 21, 2008
    Date of Patent: November 29, 2011
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Yuji Azuma, Masaki Tsubokura, Shimon Itakura, Shiro Ueda
  • Patent number: 8054400
    Abstract: The present invention prevents the corrosion of a printed circuit board which is connected to a lower side of a display panel in a liquid crystal display panel. In a display device which includes a display panel and a frame member which supports an outer peripheral portion of a display screen of a display panel, a water absorbing member is adhered to a surface of the frame member which faces the display panel in an opposed manner.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: November 8, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaki Tsubokura, Hiroshi Obata, Shunichi Matsumoto, Tsuyoshi Suzuki
  • Patent number: 8054399
    Abstract: An object of the invention is to provide a liquid crystal display of which a reduction in thickness can be realized without increasing the thickness of a frame member configuring a backlight. Also, another object is to provide a liquid crystal display which secures a sufficient property of insulation from electrode fittings and lamp cables.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: November 8, 2011
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Shimon Itakura, Fumihiko Hieda, Masaki Tsubokura
  • Patent number: 8054401
    Abstract: A display device includes a display panel having a front surface and a back surface, a first and second frame, a first elastic member arranged between the first frame and the front surface of the display panel, and a second elastic member arranged between the second frame and the back surface of the display panel, the second elastic member extending in parallel to the first elastic member. A hardness of the first elastic member varies along an elongated direction of the first elastic member so as to have a high-hardness portion, and wherein a hardness of a first portion of the second elastic member which corresponds in location to the high-hardness portion of the first elastic member has a low hardness, a hardness of a second portion of the second elastic member which corresponds in location to the low-harness portion of the first elastic member has a high hardness.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: November 8, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaki Tsubokura, Yasuharu Yatsu, Tatsuyuki Fumikura, Yoshiteru Tomizuka
  • Patent number: 8040464
    Abstract: An image display device includes a display panel module, a middle frame which places the display panel module thereon, and an upper frame which is engaged with a side face of the middle frame in a state where the upper frame covers a periphery of the display panel module, wherein the engaging portion includes projecting portions on a side face of the middle frame, each projecting portion being smoothly raised in the direction opposite to the display panel module and forming a sharp stepped portion which follows a raised portion, and pawl portions which are formed on portions of the upper frame which face the projecting portions, the pawl portions being bent along side faces of the stepped portions of the projecting portions and, thereafter, being bent such that the pawl portions extend while having arcuate face which has a center thereof in the vicinity of bent portions.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: October 18, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Takaaki Kitada, Masaki Tsubokura, Yuji Azuma
  • Publication number: 20110242458
    Abstract: Provided is a liquid crystal display device, including: alight guide plate; first light-emitting diodes and a first connector, which are opposed to a first side surface of the light guide plate; a first substrate on which the first light-emitting diodes and the first connector are mounted; second light-emitting diodes and a second connector, which are opposed to a second side surface of the light guide plate, the second side surface being on a side opposite to the first side surface; and a second substrate on which the second light-emitting diodes and the second connector are mounted, in which: the first connector is opposed to any one of the second light-emitting diodes; the second connector is opposed to any one of the first light-emitting diodes; and the first connector and the second connector are disposed without being opposed to each other.
    Type: Application
    Filed: April 4, 2011
    Publication date: October 6, 2011
    Inventors: Shimon ITAKURA, Masaki Tsubokura
  • Publication number: 20110181809
    Abstract: The side surface of the light guide plate includes an incident surface which faces the light source unit in an opposed manner, and a fixing surface which is directed in the left-and-right direction orthogonal to the top-and-bottom direction which is the direction along which the light source unit and the incident surface each other in an opposed manner. An engaging portion which is engageable with a lower frame is formed on the fixing surface or an edge portion which forms the fixing surface. The engaging portion is configured to allow a change of a distance between the incident surface and the lower frame due to expansion or shrinkage of the light guide plate while restricting the movement of the light guide plate in the top-and-bottom direction.
    Type: Application
    Filed: January 24, 2011
    Publication date: July 28, 2011
    Inventors: Yoshifumi Sekiguchi, Yoshiro Mikami, Ikuo Hiyama, Naoki Iwasaki, Masaki Tsubokura
  • Publication number: 20110164201
    Abstract: An object of the invention is to provide a liquid crystal display device having a so-called direct backlight where the interval between a number of rod light sources can be reduced, as well as a liquid crystal display device where the liquid crystal display panel and the backlight can be provided close to each other and the thickness of the module can be reduced. The liquid crystal display device is provided with a liquid crystal display panel and a backlight provided on the rear surface of this liquid crystal display panel, and the above described backlight is provided with a number of rod light sources aligned in a plane which faces said liquid crystal display panel and electrode supports for supporting the electrodes of the rod light sources on the same pole, which are provided on the same side of the rod light sources, together. The above-described electrode supporting the electrodes on the same pole together are formed of at least a separate first electrode support and second electrode support.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Inventor: Masaki Tsubokura
  • Patent number: 7961267
    Abstract: An image display device includes a display panel module, a middle frame which places the display panel module thereon, and an upper frame which is engaged with a side face of the middle frame in a state where the upper frame covers a periphery of the display panel module, wherein the engaging portion includes projecting portions on a side face of the middle frame, each projecting portion being smoothly raised in the direction opposite to the display panel module and forming a sharp stepped portion which follows a raised portion, and pawl portions which are formed on portions of the upper frame which face the projecting portions, the pawl portions being bent along side faces of the stepped portions of the projecting portions and, thereafter, being bent such that the pawl portions extend while having arcuate face which has a center thereof in the vicinity of bent portions.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: June 14, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Takaaki Kitada, Masaki Tsubokura, Yuji Azuma
  • Patent number: 7961268
    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: Grant
    Filed: February 8, 2008
    Date of Patent: June 14, 2011
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yuji Azuma, Masaki Tsubokura, Shimon Itakura, Seigo Abo