Patents by Inventor Tetsuya Hamada

Tetsuya Hamada 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: 20120020114
    Abstract: A liquid crystal display apparatus (100) comprises light source modules (1) arranged at upper and lower edges, a light guide plate (2) arranged between the light source modules (1), a rear plate (3) arranged on the rear side of the light source modules (1) and the light guide plate (2), a fan mounting plate (4) arranged on the rear side of the rear plate (3), and a cooling fan (5) mounted on the fan mounting plate (4). The rear plate (3) is provided with protrusion portions (3a) which project toward the rear surface side of the light source modules (1). A cooling air passage (11) is formed between the fan mounting plate (4) and the rear plate (3). The fan mounting plate (4) is provided with L-shaped bent portions (4a) corresponding to the shape of the protrusion portions (3a) at the upper and lower end edges of the fan mounting plate (4) so that the surface area of the protrusion portions (3a) in contact with the air flow is increased to thereby enhance the cooing efficiency of the protrusion portions (3a).
    Type: Application
    Filed: March 4, 2010
    Publication date: January 26, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hirofumi Miyamoto, Tetsuya Hamada
  • Publication number: 20120010427
    Abstract: A method for producing urethane compounds includes allowing a primary amine, a urea and/or an N-unsubstituted carbamate, and an alcohol to react in the presence of a compound containing a noncoordinating anion and a metal atom as a catalyst.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 12, 2012
    Inventors: Tetsuya Hamada, Mitsuaki Chida, Souta Itou, Yoshiki Shimokawatoko, Koichi Murayama, Hiroshi Takeuchi
  • Publication number: 20110292097
    Abstract: An illumination device is provided which can reduce a movement blur and a tailing phenomenon on a motion picture display while a drop in display brightness is suppressed, and which can suppress power consumption, can be made small and light, and can prolong the lifetime, and a liquid crystal display device using the same is provided. A light source control part of a control circuit synchronizes a latch pulse signal outputted from a gate driver control part to a gate driver, and outputs light emission control signals to respective light source power supply circuits. The respective light source power supply circuits change emission states of cold cathode fluorescent lamps to one of a first to a third emission states on the basis of the inputted light emission control signals, and illuminate an LCD panel from a rear surface of a display area.
    Type: Application
    Filed: August 5, 2011
    Publication date: December 1, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Kobayashi, Toshihiro Suzuki, Mari Sugawara, Tetsuya Hamada, Keiji Hayashi, Fumiaki Yamada, Yasutake Furukoshi, Masanori Nishido
  • Patent number: 8052320
    Abstract: To provide a backlight device with which a color hue and a color purity of a display panel can be improved while suppressing the lowering of the brightness of the display panel. A backlight device (20) comprises a pseudo white LED (21), a light guide plate (22), and a dichroic filter (25) which reflects a light with a predetermined wavelength among the light emitted from the pseudo white LED at a predetermined ratio. The dichroic filter is configured so that the light reflectance changes when the incident angle of the light is changed and a tilt angle to a light emitting surface (21e) of the pseudo white LED can be adjusted.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: November 8, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tetsuya Hamada
  • Patent number: 8049711
    Abstract: A liquid crystal display device including an LCD panel modulating light transmissivities of plural pixels disposed in a matrix form on the basis of respective gradation data; an illumination device for irradiating light to the respective pixels while a ratio (duty ratio) of a lighting time in one frame period is changed; and a display data conversion part for calculating respective lightnesses and a lightness histogram from the respective gradation data, determining a threshold lightness from the lightness histogram on the basis of a previously determined ratio of pixels to be saturated in brightness, processing the respective gradation data on the basis of the threshold lightness to output them to the LCD panel, and outputting duty ratio data to change the duty ratio to the illumination device.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: November 1, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tetsuya Kobayashi, Toshihiro Suzuki, Mari Sugawara, Tetsuya Hamada, Keiji Hayashi, Fumiaki Yamada, Yasutake Furukoshi, Masanori Nishido
  • Patent number: 8018427
    Abstract: An illumination device includes a light source section with white LEDs on a side of a light guide plate. The white LED includes a first white LED and a second white LED, and they emit light of different chromaticities. In a chromaticity diagram, a white color area is divided into two subareas by a dividing line passing through a target chromaticity; light emitted by the first white LED falls within a first subarea, and light emitted by the second white LED falls within a second subarea. By individually controlling the light emission of the first white LED and the second white LED, it is possible to emanate a desired white light from the light guide plate.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: September 13, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tetsuya Hamada
  • Patent number: 8015985
    Abstract: A fluid supply pipe is inserted through a motor supporting member, a spin motor, a rotating shaft, and a plate supporting member. A first flange is integrally formed in the vicinity of a curved portion of a straight portion, extending in the vertical direction, of the fluid supply pipe. The first flange is fixed to a motor supporting member. Thus, the fluid supply pipe is fixed to the spin motor through the motor supporting member. The fluid supply pipe has a configuration in which a gas supply pipe made of resin and a plurality of cleaning liquid supply pipes made of resin are accommodated inside a guide pipe made of stainless. Inside the guide pipe, the one gas supply pipe is surrounded by the plurality of cleaning liquid supply pipes.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: September 13, 2011
    Assignee: Sokudo Co., Ltd.
    Inventors: Tetsuya Hamada, Koji Nishiyama
  • Patent number: 8012418
    Abstract: A specified time is determined which is a worst-case (or the longest) time period assumed as a time interval required between the instant at which an interface block receives an exposed substrate from an exposure unit and the instant at which a post-exposure bake process of the substrate starts in a heating part. A waiting time is calculated by subtracting a transport time from the specified time. The transport time is a time interval actually required between the instant at which the interference block receives the substrate from the exposure unit and the instant at which the substrate reaches the heating part. The post-exposure bake process of the substrate starts in the heating part after a lapse of the above-mentioned calculated waiting time since the arrival of the substrate at the heating part.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: September 6, 2011
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventor: Tetsuya Hamada
  • Patent number: 8007159
    Abstract: The invention provides a surface illuminator capable of achieving high display quality by employing an array of discrete light sources constituted by a plurality of LEDs and a liquid crystal display having the same. The surface illuminator includes an LED module which is a plurality of LEDs alternately and discretely provided along a light entrance surface and a color irregularity correcting resistor which is connected in parallel with a predetermined LED at an end of the LED module and which provides a bypass for a current supplied to the LED.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: August 30, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Noriyuki Ohashi, Tetsuya Hamada
  • Publication number: 20110199558
    Abstract: A backlight unit (49) wherein a light-receiving surface (RS) is formed on a lateral surface (21S) of a light guide plate (2) so as to face a light-emitting surface (11L) of an LED (11). The light-receiving surface (RS) is positioned in a corner (21C) of the light guide plate (21), and at least two corners (21C) next to each other in the light guide plate (21) have the light-receiving surface (RS).
    Type: Application
    Filed: September 4, 2009
    Publication date: August 18, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Tetsuya Hamada
  • Publication number: 20110181815
    Abstract: To suppress a decrease in the contrast caused by the reflection on the interface to the air layer without decreasing the quality of display. A reflection-type liquid crystal display device includes a light guide plate having a polarizing element stuck or adhered thereto on the side facing a reflection-type liquid crystal display panel and arranged maintaining a predetermined gap relative to the reflection-type liquid crystal display panel. The display device further includes a source of light arranged on an end surface side of the light guide plate, and a member having a light-diffusing function and interposed between the polarizing element and the light guide plate.
    Type: Application
    Filed: April 7, 2011
    Publication date: July 28, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Hamada, Kunihiro Tashiro, Mari Sugawara, Toshihiro Suzuki, Hidefumi Yoshida
  • Publication number: 20110176083
    Abstract: A backlight device (100) includes: a case (1); a plurality of LED modules (2) provided in series on a bottom portion (1a) of the case (1); a reflective sheet (3); a diffusing plate (4); and an optical sheet (5). At the bottom portion (1a) of the case (1), four recessed portions (10) are formed in a horizontal direction of a display screen, and each of the LED modules 2 is fixed thereon with screws (11). At opposite ends of the recessed portion (10), opening portions (10a) and (10b) each having a lid member (13) are formed, thus making it possible to remove the LED modules (2) without disassembling the backlight device (100).
    Type: Application
    Filed: September 11, 2007
    Publication date: July 21, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Tetsuya Hamada
  • Publication number: 20110134364
    Abstract: Provided is an illuminating device wherein generation of luminance deterioration and luminance nonuniformity is suppressed. An illuminating device (10) is provided with an LED (6) stored inside a storing space (10a), a power supply substrate (8) arranged outside the storing space (10a), and an FPC (7). The FPC (7) extends along a side section (1c) of a case member (1) so that the connecting terminal (7c) is away from the LED (6), and in such state, the connecting terminal (7c) is extracted to the outside from the inside of the storing space (10a).
    Type: Application
    Filed: June 3, 2009
    Publication date: June 9, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Keisuke Neyama, Tetsuya Hamada
  • Publication number: 20110134371
    Abstract: Provided is an illuminating device wherein generation of luminance deterioration and luminance nonuniformity is suppressed. An illuminating device (10) is provided with a light guide plate (3) and an LED (6) stored inside a storing space (10a), and a power supply substrate (8) arranged outside the storing space (10a). An extracting hole (1c) is formed in a region (10b) whereupon the light guide plate (3) at a bottom section (1a) of a case member (1) is placed, and a connecting terminal (7c) of an FPC (7) is extracted to the outside from the inside of the storing space (10a) through the extracting hole (1c).
    Type: Application
    Filed: June 3, 2009
    Publication date: June 9, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kazuya Shimojoh, Tetsuya Hamada
  • Publication number: 20110122339
    Abstract: An illumination device that can reduce variations in brightness is provided. This illumination device (10) includes a light source module (5) and a chassis (1) provided with an accommodation space (10a). A light guide plate placement portion (1a) and a light source placement portion (1b) are provided in the accommodation space (10a). The light source placement portion (1b) has a placement surface (1c), the placement surface (1c) is formed such that the placement surface (1c) is raised with respect to the light source placement portion (1b) and the light source module (5) is placed on the placement surface (1c).
    Type: Application
    Filed: June 3, 2009
    Publication date: May 26, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Tetsuya Hamada
  • Publication number: 20110116011
    Abstract: Provided is an illuminating device wherein replacement of a light source is facilitated and generation of luminance nonuniformity is suppressed. An illuminating device (10) is provided with a light source module (5) which is attached to a bottom section (1a) from a rear surface side of a case member (1). On a prescribed section on the bottom section (1a), a through hole (1b) is formed, and a prescribed section of the through hole protrudes to the side of a storing space (10a). An LED (6) is arranged to face a light incoming surface (3a) of a light guide plate (3) by having the LED (6) protrude to the side of the storing space (10a) through the through hole (1b).
    Type: Application
    Filed: June 3, 2009
    Publication date: May 19, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroaki Isobe, Tetsuya Hamada
  • Publication number: 20110116015
    Abstract: Provided is an illuminating device wherein generation of luminance nonuniformity is suppressed, while suppressing deterioration of light use efficiency. An illuminating device (10) is provided with an FPC (8), which has at least a part (8a) perpendicularly arranged to a light incoming surface (3a) of a light guide plate (3) and has an LED (7) mounted on the part (8a). The FPC (8) is also provided with a part (8b) positioned below a region between the LED (7) and the light incoming surface (3a), and the part (8b) is tilted in a diagonally downward direction toward the light incoming surface (3a).
    Type: Application
    Filed: June 3, 2009
    Publication date: May 19, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hirohisa Yakura, Tetsuya Hamada
  • Publication number: 20110096569
    Abstract: A backlight device (3) includes: a light guide plate (32); a chassis (31) on which the light guide plate (32) is mounted; a frame member (35) having the light guide plate (32) held between the chassis (31) and the frame member (35); a spot light source (36) arranged near a side surface of the light guide plate (32); a flexible printed circuit board (37) on which the spot light source (36) is mounted; and a heat dissipation plate (31a) (part of the chassis (31)) bonded through a double-faced adhesive (38) to the flexible printed circuit board (37). The frame member (35) is provided with a protrusion portion (351) that is in contact with the flexible printed circuit board (37) and that presses the flexible printed circuit board (37) onto the heat dissipation plate (31a), and a tip portion of the protrusion portion (351) is so tapered as to be located apart from the flexible printed circuit board (37).
    Type: Application
    Filed: April 10, 2009
    Publication date: April 28, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Tetsuya Hamada
  • Publication number: 20110090422
    Abstract: A housing (HG) for a backlight unit (49) includes a bottom section (22), a wall section (23) and a side section (VP), and the side section (VP) is at least a part of a first groove (DH1) which sandwiches a mounting substrate (11).
    Type: Application
    Filed: November 4, 2008
    Publication date: April 21, 2011
    Inventor: Tetsuya Hamada
  • Publication number: 20110082325
    Abstract: The invention provides transition metal complex compounds, high-activity olefin oligomerization catalysts containing the compounds, and olefin oligomerization processes using the catalysts. A transition metal complex compound [A] according to the invention is represented by Formula (I) or Formula (I?) below. An olefin oligomerization catalyst includes the transition metal complex compound [A]. In an olefin oligomerization process of the invention, an olefin is oligomerized in the presence of the catalyst.
    Type: Application
    Filed: June 27, 2008
    Publication date: April 7, 2011
    Inventors: Yasuhiko Suzuki, Shinsuke Kinoshita, Atsushi Shibahara, Naritoshi Yoshimura, Isao Hara, Tetsuya Hamada, Kazumori Kawamura, Kou Tsurugi, Yasunori Saito, Seiichi Ishii, Yasushi Nakayama, Naoto Matsukawa, Susumu Murata