Patents by Inventor Fumiaki Yamada

Fumiaki Yamada 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: 8879016
    Abstract: A method of forming liquid crystal cell for a color display device includes forming a liquid crystal layer and a prism structure between top and bottom substrates. Forming the prism structure includes forming a lens shaped die, coating a low refractive index resin on the lens shaped die, pasting the lens shaped die to the top substrate, and irradiating the coated low refractive index resin so as to set the low refractive index resin and form a low refractive index layer. The lens shaped die is removed from the low refractive index layer, a high refractive index resin is coated on the low refractive index layer by use of a planarizing die. The coated high refractive index resin is irradiated so as to set the high refractive index resin and form a high refractive index layer, and the planarizing die is removed from the high refractive index layer.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: November 4, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hidetoshi Namata, Shinya Ono, Yoichi Taira, Fumiaki Yamada
  • Patent number: 8767139
    Abstract: A method of forming an optical element for a color display device includes forming a lens shaped die, coating a low refractive index photo-setting resin on the lens shaped die, pasting the lens shaped die to a substrate, and irradiating the coated low refractive index photo-setting resin so as to set the low refractive index resin and form a low refractive index layer. The lens shaped die is removed from the low refractive index layer set on the substrate, a high refractive index photo-setting resin is coated on the low refractive index layer by use of a planarizing die, and the coated high refractive index photo-setting resin is irradiated so as to set the high refractive index resin and form a high refractive index layer. The planarizing die is then from the high refractive index layer set on the low refractive index layer.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: July 1, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hidetoshi Namata, Shinya Ono, Yoichi Taira, Fumiaki Yamada
  • Patent number: 8659709
    Abstract: An object of the present invention is to obtain a display device having excellent display quality by appropriately modifying the chromaticity of images. In this display device, a correction processing part (CPU 30) determines a first chromaticity change amount stored in memory (31) on the basis of a first cumulative usage amount, which is the cumulative usage amount of an LED (17) up to a present time, the cumulative value having been measured by a counter (32), and the correction processing part also determines a second chromaticity change amount stored in the memory (31) on the basis of a second cumulative usage amount, which is the cumulative usage amount of the LED (17) up to a time when the chromaticity of a pixel is adjusted by a chromaticity adjusting part (CPU 30), the cumulative value having been measured by the counter (32).
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: February 25, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tohru Hanaoka, Fumio Kokubo, Eiji Kurimoto, Ryoji Ishimura, Shota Inoue, Fumiaki Yamada
  • Publication number: 20130250187
    Abstract: An object of the present invention is to obtain a display device having excellent display quality by appropriately modifying the chromaticity of images. In this display device, a correction processing part (CPU 30) determines a first chromaticity change amount stored in memory (31) on the basis of a first cumulative usage amount, which is the cumulative usage amount of an LED (17) up to a present time, the cumulative value having been measured by a counter (32), and the correction processing part also determines a second chromaticity change amount stored in the memory (31) on the basis of a second cumulative usage amount, which is the cumulative usage amount of the LED (17) up to a time when the chromaticity of a pixel is adjusted by a chromaticity adjusting part (CPU 30), the cumulative value having been measured by the counter (32).
    Type: Application
    Filed: November 24, 2011
    Publication date: September 26, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Hanaoka, Fumio Kokubo, Eiji Kurimoto, Ryoji Ishimura, Shota Inoue, Fumiaki Yamada
  • Publication number: 20120304773
    Abstract: A method and apparatus to detect a defect in a three-dimensional integrated structure by ultrasound scanning and to non-destructively detect the presence of a void that can occur in a process in a through silicon via (TSV) arranged in a board, such as a silicon wafer. To avoid measurement by ultrasound scanning over a board surface from being impeded by an object, such as a (solder) bump, scattering ultrasound, one or more TSVs belonging to a test element group (TEG) are selected from among a plurality of TSVs such that physical obstruction in the vicinity of the TEG.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 6, 2012
    Applicant: International Business Machines Corporation
    Inventors: Akihiro Horibe, Fumiaki Yamada
  • Publication number: 20120045859
    Abstract: A method of forming liquid crystal cell for a color display device includes forming a liquid crystal layer and a prism structure between top and bottom substrates. Forming the prism structure includes forming a lens shaped die, coating a low refractive index resin on the lens shaped die, pasting the lens shaped die to the top substrate, and irradiating the coated low refractive index resin so as to set the low refractive index resin and form a low refractive index layer. The lens shaped die is removed from the low refractive index layer, a high refractive index resin is coated on the low refractive index layer by use of a planarizing die. The coated high refractive index resin is irradiated so as to set the high refractive index resin and form a high refractive index layer, and the planarizing die is removed from the high refractive index layer.
    Type: Application
    Filed: February 18, 2011
    Publication date: February 23, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hidetoshi Namata, Shinya Ono, Fumiaki Yamada, Yoichi Taira
  • Publication number: 20120043678
    Abstract: A method of forming an optical element for a color display device includes forming a lens shaped die, coating a low refractive index photo-setting resin on the lens shaped die, pasting the lens shaped die to a substrate, and irradiating the coated low refractive index photo-setting resin so as to set the low refractive index resin and form a low refractive index layer. The lens shaped die is removed from the low refractive index layer set on the substrate, a high refractive index photo-setting resin is coated on the low refractive index layer by use of a planarizing die, and the coated high refractive index photo-setting resin is irradiated so as to set the high refractive index resin and form a high refractive index layer. The planarizing die is then from the high refractive index layer set on the low refractive index layer.
    Type: Application
    Filed: February 18, 2011
    Publication date: February 23, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hidetoshi Numata, Shinya Ono, Fumiaki Yamada, Yoichi Taira
  • 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: 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: 7936412
    Abstract: A color filterless display device performing color display for expressing one pixel by three RGB sub-pixels includes: a light source; a diffraction grating for separating a light irradiated from this light source into lights of a plurality of wavelength regions; a cylindrical lens array for receiving the separated light and condensing the light while corresponding to each of the sub-pixels; and a liquid crystal cell including a structure portion for correcting an angle of the condensed light for all sub-pixels, wherein, in the structure portion of this liquid crystal cell, a side onto which a light from the cylindrical lens array is made incident is made of a high refractive index layer, an emitting side from which the light is emitted is made of a low refractive index layer, and a Fresnel-type microprism structure is formed by the high refractive index layer and the low refractive index layer.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: May 3, 2011
    Assignee: International Business Machines Corporation
    Inventors: Hidetoshi Numata, Shinya Ono, Fumiaki Yamada, Yoichi Taira
  • Patent number: 7889958
    Abstract: An apparatus includes an optical wave guide and a ferrule. The optical wave guide has a prespecified horizontal-positioning surface and a prespecified vertical-positioning surface. The ferrule is to precisely couple with the optical wave guide. The ferrule defines a first datum plane mating with the prespecified vertical-positioning surface of the optical wave guide to precisely mechanically vertically position the optical wave guide within the ferrule. The ferrule defines a second datum plane mating with the prespecified horizontal-positioning surface of the optical wave guide to precisely mechanically horizontally position the optical wave guide within the ferrule.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: February 15, 2011
    Assignee: International Business Machines Corporation
    Inventors: Fumiaki Yamada, Masaki Hasegawa, Yoichi Taira
  • Patent number: 7796852
    Abstract: An apparatus includes an optical wave guide and a ferrule. The optical wave guide has a prespecified horizontal-positioning surface and a prespecified vertical-positioning surface. The ferrule is to precisely couple with the optical wave guide. The ferrule defines a first datum plane mating with the prespecified vertical-positioning surface of the optical wave guide to precisely mechanically vertically position the optical wave guide within the ferrule. The ferrule defines a second datum plane mating with the prespecified horizontal-positioning surface of the optical wave guide to precisely mechanically horizontally position the optical wave guide within the ferrule.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: September 14, 2010
    Assignee: International Business Machines Corporation
    Inventors: Fumiaki Yamada, Masaki Hasegawa, Yoichi Taira
  • Patent number: 7766587
    Abstract: An end mill including a shank having one end gripped by a chuck which is rotatable about a predetermined rotation axis, and a blade body attached to the other end of the shank and rotatable together with the shank. The blade body has a shape in which the area of a cross section in a plane perpendicular to the rotation axis decreases as the distance from the shank increases, and includes a linear cutting edge parallel to, and at a certain distance from, the rotation axis. An end cutting edge adjoining the cutting edge in the longitudinal direction thereof may be provided. The blade body includes, for example, a rake-face-side surface including a rake face and adjoining the flank-side surface in two portions, and a linear cutting edge formed at one of the positions at which the flank-side surface and the rake-face-side surface come in contact with each other.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: August 3, 2010
    Assignee: International Business Machines Corporation
    Inventor: Fumiaki Yamada
  • Publication number: 20100129961
    Abstract: The present invention relates to a method of multi chip stack bonding. A resin mixture is applied to a chip wafer and the chip wafer is heated until the resin mixture has solidified. The chip wafer is fragmented into individual chips and the individual chips are pre-stacked with alignment into a multi-chip stack in a joining process. Pressure and heating is applied to the multi-chip stack until the joining process is completed.
    Type: Application
    Filed: November 25, 2008
    Publication date: May 27, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: AKIHIRO HORIBE, FUMIAKI YAMADA
  • Patent number: 7679614
    Abstract: Provided are a color display driving principle obtained while taking into account a difference in eye sensitivity to the flickering of differently colored lights, a TFT liquid crystal display module structure that is adequate for this method, and a double-panel projection type display device. The count of the G (green) color data that can be written is increased compared with the count for the other primary colors, or the display period for green can be extended. The repetitive unit is set to R, G, B and G, so that a satisfactory refresh rate can be set for the important color G. Therefore, the overall refresh frequency and the power consumed by the display device can be reduced without deterioration of the display quality, and requests for the time response speeds by the display device can be reduced.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: March 16, 2010
    Assignee: AU Optronics Corporation
    Inventors: Fumiaki Yamada, Yoshitami Sakaguchi
  • Patent number: 7661863
    Abstract: A prism sheet, including a reflective surface having a first side formed by at least a small curvature surface and a surface different from the small curvature surface, and a second side formed by a planar surface.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: February 16, 2010
    Assignee: International Business Machines Corporation
    Inventors: Sayuri Kohara, Daiju Nakano, Fumiaki Yamada
  • Patent number: 7661864
    Abstract: A prism sheet changes a direction of light propagation by reflecting light launched with an intensity distribution of a predetermined angle range wherein: a reflective surface for perfect reflection of light includes a higher order surface constructed by at least a small curvature surface and a surface different from the small curvature surface.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: February 16, 2010
    Assignee: International Business Machines Corporation
    Inventors: Sayuri Kohara, Daiju Nakano, Fumiaki Yamada
  • Patent number: 7548674
    Abstract: The present invention relates to a method of aligning circular multi-core fibers, wherein the method utilized independent and individually selected cores to receive, transmit, and emit light from input devices. The present invention further relates to positioning the ends of a multi-core fiber in order to detect and determine the precise locations of individually selected core fibers.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: June 16, 2009
    Assignee: International Business Machines Corporation
    Inventors: Akihiro Horibe, Fumiaki Yamada, Yoichi Taira
  • Publication number: 20090110495
    Abstract: An end mill including a shank having one end gripped by a chuck which is rotatable about a predetermined rotation axis, and a blade body attached to the other end of the shank and rotatable together with the shank. The blade body has a shape in which the area of a cross section in a plane perpendicular to the rotation axis decreases as the distance from the shank increases, and includes a linear cutting edge parallel to, and at a certain distance from, the rotation axis. An end cutting edge adjoining the cutting edge in the longitudinal direction thereof may be provided. The blade body includes, for example, a rake-face-side surface including a rake face and adjoining the flank-side surface in two portions, and a linear cutting edge formed at one of the positions at which the flank-side surface and the rake-face-side surface come in contact with each other.
    Type: Application
    Filed: December 18, 2008
    Publication date: April 30, 2009
    Inventor: Fumiaki Yamada
  • Patent number: 7473059
    Abstract: An end mill including a shank having one end gripped by a chuck which is rotatable about a predetermined rotation axis, and a blade body attached to the other end of the shank and rotatable together with the shank. The blade body has a shape in which the area of a cross section in a plane perpendicular to the rotation axis decreases as the distance from the shank increases, and includes a linear cutting edge parallel to, and at a certain distance from, the rotation axis. An end cutting edge adjoining the cutting edge in the longitudinal direction thereof may be provided. The blade body includes, for example, a rake-face-side surface including a rake face and adjoining the flank-side surface in two portions, and a linear cutting edge formed at one of the positions at which the flank-side surface and the rake-face-side surface come in contact with each other.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: January 6, 2009
    Assignee: International Business Machines Coporation
    Inventor: Fumiaki Yamada