Patents by Inventor Shohei Yoshida

Shohei Yoshida 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: 20090250705
    Abstract: A p base ohmic contact of a silicon carbide semiconductor device consists of a p++ layer formed by high-concentration ion implantation and a metal electrode. Since the high-concentration ion implantation performed at the room temperature significantly degrades the crystal of the p++ layer to cause a process failure, a method for implantation at high temperatures is used. In terms of switching loss and the like of devices, it is desirable that the resistivity of the p base ohmic contact should be lower. In well-known techniques, nothing is mentioned on a detailed relation among the ion implantation temperature, the ohmic contact resistivity and the process failure. Then, in the ion implantation step, the temperature of a silicon carbide wafer is maintained in a range from 175° C. to 300° C., more preferably in a range from 175° C. to 200° C. The resistivity of the p base ohmic contact using a p++ region formed by ion implantation at a temperature in a range from 175° C. to 300° C.
    Type: Application
    Filed: November 7, 2008
    Publication date: October 8, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomokatsu WATANABE, Sunao Aya, Naruhisa Miura, Keiko Sakai, Shohei Yoshida, Toshikazu Tanioka, Yukiyasu Nakao, Yoichiro Tarui, Masayuki Imaizumi
  • Publication number: 20090207186
    Abstract: An image display method includes dividing one frame into a plurality of sub-frames by multiplying a frame frequency of an input image signal, reducing a high-spatial frequency component of an image signal which is used for image display in at least one predetermined sub-frame among the plurality of sub-frames in comparison with that of an image signal which is used for image display in another sub-frame, and displaying an image in each sub-frame.
    Type: Application
    Filed: April 16, 2009
    Publication date: August 20, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi Toyooka, Shohei Yoshida
  • Publication number: 20090139241
    Abstract: The present invention improves the reliability of a combusting system including multiple combustors and improves an environmental performance thereof. The invention includes a device that delays the start time of fuel injection from a fuel nozzle of a combustor including a ignitor from the start time of fuel injection from a fuel nozzle of the combustor not including the ignitor.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Inventors: Yoshitaka HIRATA, Shohei Yoshida, Tatsuya Sekiguchi, Hiroshi Inoue
  • Patent number: 7542619
    Abstract: An image display method includes dividing one frame into a plurality of sub-frames by multiplying a frame frequency of an input image signal, reducing a high-spatial frequency component of an image signal which is used for image display in at least one predetermined sub-frame among the plurality of sub-frames in comparison with that of an image signal which is used for image display in another sub-frame, and displaying an image in each sub-frame.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: June 2, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Toyooka, Shohei Yoshida
  • Patent number: 7445345
    Abstract: A projection-type display device 1 including a light source 10, an optical integrator 20, dichroic mirrors 30 and 35, a reflecting mirror 36, a relay optical system 40, parallelizing lenses 50B, 50G and 50R, liquid crystal light valves 60B, 60G and 60R, incident side lenses 70B, 70G and 70R, a light-synthesizing cross dichroic prism 80, a relay lens 90, an emergent side lens 95, a liquid crystal light valve 100 and a projection lens 110, and liquid crystal light valve 100 is provided in the rear stage of liquid crystal light valves 60B, 60G and 60R.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: November 4, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Yoshitaka Itoh, Shohei Yoshida, Shoichi Uchiyama, Junichi Nakamura, Takashi Nitta, Tsunemori Asahi
  • Publication number: 20080079856
    Abstract: A liquid-crystal device includes first and second substrates opposing each other and a liquid-crystal layer held between the first and second substrates. The liquid-crystal device modulates light by switching the orientation of liquid-crystal molecules in the liquid-crystal layer from a splay state orientation to a bend state orientation. The liquid-crystal device further includes a pixel electrode provided for the first substrate; a first opposing electrode provided for the second substrate, an electric field capable of being generated in the liquid-crystal layer between the pixel electrode and the first opposing electrode; and a second opposing electrode provided for the second substrate, an electric field capable of being generated in the liquid-crystal layer at least between the first opposing electrode and the second opposing electrode.
    Type: Application
    Filed: September 12, 2007
    Publication date: April 3, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kosuke FUKUI, Shohei YOSHIDA
  • Publication number: 20070256416
    Abstract: A combustor for a gas turbine capable of performing stable combustion even by using high temperature air, comprising a first burner (5) jetting fuel and air into a combustion chamber (2) and a second burner (8) causing the circulating jet of the fuel and air installed at a position corresponding to the tip part of a flame caused by the first burner (5).
    Type: Application
    Filed: December 16, 2003
    Publication date: November 8, 2007
    Inventors: Satoshi Dodo, Susumu Nakano, Kuniyoshi Tsubouchi, Shohei Yoshida, Yoshitaka Hirata
  • Patent number: 7287860
    Abstract: The invention provides a display device and a projector that can improve display performance with a simple structure without accompanying the enlargement of the device. The display device of the invention can include an illumination system capable of outputting a plurality of primary color light components having different luminescent colors and liquid crystal light valves for modulating the primary color light components output from the illumination system, and the illumination system can adjust the emission spectra of the primary color light components. A light-emitting device of each light controls outputs therefrom independently.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: October 30, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Shohei Yoshida, Hidehito Iisaka, Hidefumi Sakata
  • Publication number: 20070132960
    Abstract: A liquid crystal panel to be demountably mounted to a projector type display device having a light source for emitting light and a light collecting unit collecting a plurality of single color lights out of the light emitted from the light source at a position between the light source and the light collecting unit, the liquid crystal panel includes a plurality of light transmitting areas for allowing the respective single color lights to pass through in the state of being mounted to the projector type display device, wherein the plurality of light transmitting areas are arranged and connected or integrated in the direction of substantially the same plane of the liquid crystal panel.
    Type: Application
    Filed: October 10, 2006
    Publication date: June 14, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Koichi TERAO, Shohei YOSHIDA
  • Publication number: 20070109236
    Abstract: A liquid crystal device includes a pair of substrates, a liquid crystal disposed between the pair of substrates, and a seal member disposed around the liquid crystal, wherein a liquid crystal storage portion is disposed in the inner circumference of the seal member by forming a concave portion on the substrate.
    Type: Application
    Filed: September 12, 2006
    Publication date: May 17, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shuhei YAMADA, Shohei YOSHIDA, Takeshi SETO
  • Publication number: 20070085970
    Abstract: An image display device includes an illumination device, and a light valve that modulates a light coming from the illumination device. In the image display device, the light valve includes an electro-optical panel configured by a pair of substrates sandwiching therebetween an electro-optical material that shows refractive index anisotropy in response to application of an electric field when being optically isotropic. In the electro-optical panel, the application of the electric field is directed between the pair of substrates, and in the illumination device, the amount of light entering the light valve at a predetermined light incident angle is larger than the amount of light coming from the direction of a normal of the light valve.
    Type: Application
    Filed: October 5, 2006
    Publication date: April 19, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Shohei YOSHIDA
  • Publication number: 20060285025
    Abstract: An image display device for displaying an image on the basis of an image signal supplied from an image supply device includes a brightness detecting section that detects a gray level which characterizes brightness of a predetermined pattern image from a pattern image signal when the predetermined pattern image is supplied from the image supply device; a storing section that stores a reference gray level predetermined in the pattern image; a correction parameter setting section that sets a correction parameter for compensating by a difference between the gray level detected by the brightness detecting section and the reference gray level stored in the storing section; and a correcting section that corrects the brightness of the image signal supplied from the image supply device on the basis of the correction parameter.
    Type: Application
    Filed: March 20, 2006
    Publication date: December 21, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shohei Yoshida, Takashi Toyooka, Hidehito Iisaka
  • Patent number: 7136035
    Abstract: A projection type display is provided that can change a quantity of light emitted to a light modulation device without changing the intensity of light emission from a lamp and exhibits superiority in an image expression and adaptability to an operational environment. This includes an illumination device, a liquid crystal light valve modulating light emitted from the illumination device and a projection lens projecting light modulated by the liquid crystal light valve. This illumination device is provided with a light source and a fly-eye lens, making illumination distribution of light incident from the light source uniform and a liquid crystal element for light adjustment, which is disposed on an optical axis of light emitted from the light source and adjusts a quantity of light emitted from the light source.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: November 14, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Shohei Yoshida
  • Publication number: 20060232502
    Abstract: An image display apparatus in which image signals of a plurality of primary colors are transformed by an image processing section into color space that includes lightness and chromaticity. When the chromaticity (color vividness) in this color space is being corrected, the correction method is changed in accordance with the optical modulation state of the display apparatus. If optical modulation is performed, then correction is made to lower the chromaticity, while correction is made to raise the chromaticity when there is no optical modulation.
    Type: Application
    Filed: June 20, 2006
    Publication date: October 19, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Shohei Yoshida
  • Patent number: 7088372
    Abstract: An image display apparatus in which image signals of a plurality of primary colors are transformed by an image processing section into color space that includes lightness and chromaticity. When the chromaticity (color vividness) in this color space is being corrected, the correction method is changed in accordance with the optical modulation state of the display apparatus. If optical modulation is performed, then correction is made to lower the chromaticity, while correction is made to raise the chromaticity when there is no optical modulation.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: August 8, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Shohei Yoshida
  • Publication number: 20060119617
    Abstract: An image display method includes dividing one frame into a plurality of sub-frames by multiplying a frame frequency of an input image signal, reducing a high-spatial frequency component of an image signal which is used for image display in at least one predetermined sub-frame among the plurality of sub-frames in comparison with that of an image signal which is used for image display in another sub-frame, and displaying an image in each sub-frame.
    Type: Application
    Filed: December 1, 2005
    Publication date: June 8, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi Toyooka, Shohei Yoshida
  • Patent number: 7034808
    Abstract: The present invention provides a touch panel having pluralities of projections, each of the projections having a predetermined shape, formed on inner surfaces of a lower substrate and an upper substrate, respectively. The projections being formed in at least two directions with a substantially periodical pitch that is shorter than any wavelength of visible light. The touch panel can also include a lower transparent electrode and an upper transparent electrode formed over the inner surfaces of the lower substrate and the upper substrate having the pluralities of projections, respectively. The cross-sectional area of each of the projections parallel to the outer surface of the lower substrate is configured to decrease continuously from bottom to top of the projection. The same applies to the combination of each of the projections, the bottom and a top thereof, and the upper substrate.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: April 25, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Hidefumi Sakata, Tetsuhiko Takeuchi, Hidehito Iisaka, Shohei Yoshida
  • Publication number: 20060007214
    Abstract: An image recording method for an image recording medium is used in an image display apparatus that changes an image on a light valve and changes quantity of light which is incident on the light valve via a light control element according to an input image signal. The image recording method includes accommodating a range of brightness information which an object to be imaged indicates, in an entire range of brightness information which an image recording apparatus can record in the image recording medium; and recording a light-control control signal for controlling the light control element when an image signal is recorded on the image recording medium. The light control element is generated on the basis of the range of the brightness information uniformly expanded, in synchronization with the image signal.
    Type: Application
    Filed: June 7, 2005
    Publication date: January 12, 2006
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi Toyooka, Shohei Yoshida, Hidehito Iisaka, Hidehiro Akahane
  • Publication number: 20050174495
    Abstract: A projection-type display device 1 including a light source 10, an optical integrator 20, dichroic mirrors 30 and 35, a reflecting mirror 36, a relay optical system 40, parallelizing lenses 50B, 50G and 50R, liquid crystal light valves 60B, 60G and 60R, incident side lenses 70B, 70G and 70R, a light-synthesizing cross dichroic prism 80, a relay lens 90, an emergent side lens 95, a liquid crystal light valve 100 and a projection lens 110, and liquid crystal light valve 100 is provided in the rear stage of liquid crystal light valves 60B, 60G and 60R.
    Type: Application
    Filed: December 17, 2004
    Publication date: August 11, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoshitaka Itoh, Shohei Yoshida, Shoichi Uchiyama, Junichi Nakamura, Takashi Nitta, Tsunemori Asahi
  • Publication number: 20050093995
    Abstract: Aspects of the invention can provide a video recording method that can reduce or prevent occurrence of white compression or flicker at the reproduction of an image in a projection-type video display apparatus using a light valve and a light adjusting device. In the video recording method for recording a video to a video recording medium used in a video display apparatus that changes an image on a light valve in accordance with an input image signal and changes the quantity of light to be incident on the light valve by a light adjusting device, when recording an image signal to the video recording medium, a light adjustment control signal for controlling the light adjusting device can be recorded synchronously with the image signal.
    Type: Application
    Filed: September 10, 2004
    Publication date: May 5, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Shohei Yoshida