Patents by Inventor Fusao Ishii

Fusao Ishii 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: 8199394
    Abstract: A mirror device comprises: a plurality of electrodes disposed on a substrate; a hinge connected to at least one of the electrodes; a mirror connected to the hinge and corresponding to at least one of the electrodes, wherein a barrier layer is comprised between the hinge and mirror, and/or between the hinge and electrode. Also noted is a mirror device production method for producing such-configured mirror device. Further noted is a projection apparatus comprising such-configured mirror device.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: June 12, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Fusao Ishii, Yoshihiro Maeda, Hirotoshi Ichikawa
  • Patent number: 8194305
    Abstract: The present invention discloses a mirror device that includes a mirror element which further comprising an elastic hinge and a mirror and which modulates incident light emitted from a light source, a device substrate on which a drive circuit for driving the mirror element is placed, a package substrate which is made of transparent glass or a silicon material and on which the device substrate is placed, a metallic thermal transfer path connected to the device substrate, and a cover glass connected to the package substrate so that the device substrate is covered.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: June 5, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Yoshihiro Maeda, Hirokazu Nishino, Akira Shirai, Hirotoshi Ichikawa, Fusao Ishii
  • Patent number: 8179591
    Abstract: The present invention provides a spatial light modulator, comprising: a pixel array comprises a plurality of pixel units. Each of the pixel units comprises a memory cell. A plurality of word lines and a plurality of plate lines to electrically communicate with the pixel units. A plurality of bit line sets wherein each of the sets includes a pair of bit lines each connected to a memory cell, wherein at least one pair of the memory cells connected to the pair of bit lines are on a same row connected to a same word line.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: May 15, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Naoya Sugimoto, Yoshihiro Maeda, Kazuma Arai, Fusao Ishii
  • Patent number: 8157389
    Abstract: The present invention provides a display apparatus, comprising: an a light source for emitting illumination light for transmitting along illumination light path; a display device includes a plurality of pixels for modulating the illumination light for reflecting the illumination light along a projection light path after said illumination light is modulated by said display device; light path change actuator for changing the projection light paths; and a control circuit for controlling the light source, wherein the control circuit controls the light source in response to changes of the projection light path.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: April 17, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Yoshihiro Maeda, Hirokazu Nishino, Akira Shirai, Fusao Ishii
  • Publication number: 20120086999
    Abstract: The present invention provides a transmissive Spatial Light Modulator with fast response speed and higher brightness using micro-windows having switching transistors on said window so that the fill factor of light transferring area can be maximized. Conventional systems have transistors out of windows which substantially reduce the area to pass incoming light, because transistors are usually opaque and block light transmission. Transmissive Spatial Light Modulator requires simpler and smaller optics than reflective Spatial Light Modulator.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 12, 2012
    Inventor: Fusao Ishii
  • Patent number: 8154474
    Abstract: The present invention provides a spatial light modulator, comprising: a plurality of pixel elements wherein each of the pixel elements comprises at least a switching element; a plurality of control lines connected to at least one of the switching elements; and a controller for generating and transmitting a control signal through the control line for controlling the switching element, wherein the controller starts transmitting the control signal to a first switching element through a first control line before the control signal applied to a second switching element through a second control line is turned off at a low voltage level.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: April 10, 2012
    Assignees: Silicon Quest Kabushiki Kaisha, Olympus Corporation
    Inventors: Fusao Ishii, Naoya Sugimoto, Yoshihiro Maeda
  • Patent number: 8134767
    Abstract: A mirror device comprises: an electrode which is covered with a protective film made of a material containing a semiconductor material and is placed on a substrate; a mirror placed above the electrode; and an electrically conductive hinge placed between the mirror and the electrode, wherein an opening part is formed in a part of the protective film, and the hinge penetrates the protective film in the opening part thereof.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: March 13, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Yoshihiro Maeda, Hirotoshi Ichikawa, Fusao Ishii
  • Patent number: 8134772
    Abstract: A micromirror device includes an elastic hinge for supporting a mirror on a substrate, and an address electrode for deflecting the mirror. The device further includes a protective layer and an oriented monolayer laid to cover a stopper also functioning as an address electrode provided below the mirror and between the mirror and the substrate.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: March 13, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Yoshihiro Maeda, Fusao Ishii, Kazuhiro Watanabe, Hirotoshi Ichikawa
  • Patent number: 8125407
    Abstract: A micromirror device, which makes an image display with digital image data, comprises pixel elements which are arranged in the form of a matrix and each of which modulates incident light by using an ON state for deflecting incident light to projection optics, an OFF state for deflecting incident light to a direction different from the projection optics, and an oscillation state where a mirror oscillates between the ON and the OFF state, and a timing controller for performing a timing control for loading the image data into the pixel elements arranged in the form of the matrix. Each of the pixel elements has a mirror, and at least one memory cell. The pixel elements arranged in the form of the matrix are grouped into a plurality of subsets. The timing controller performs a timing control for loading the image data at independent timing for each of the plurality of subsets.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: February 28, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Kazuma Aral, Fusao Ishii, Yoshihiro Maeda
  • Patent number: 8115986
    Abstract: The present invention provides a mirror device, comprising: a plurality of deflectable mirrors; an elastic member for supporting the mirror and to deflect the mirror to a range of deflecting angles; a drive electrode for driving the mirror; a control circuit for giving electric charge to the drive electrode and controlling the deflecting direction of the mirror; and a substrate on which the drive electrode and the elastic member, wherein the drive electrode is placed within an area on the substrate the mirror is projected on, has an outer form constituted by sides approximately in parallel to the outer peripheral lines of the present mirror and by sides approximately parallel to the deflection axis of the present mirror, or a form obtained by dividing the aforementioned outer form into a plurality thereof, and also fills the role of a stopper for regulating the deflection angle of the mirror.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: February 14, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Hirotoshi Ichikawa, Yoshihiro Maeda, Fusao Ishii
  • Patent number: 8081371
    Abstract: The present invention provides an image projection system comprising a spatial light modulator (SLM) comprises a plurality of pixel elements, wherein each of the pixel elements further comprises a deflectable mirror, and at least a first electrode and a second electrode for controlling the deflectable mirror to deflect to different tilt angles to reflect and modulate an illumination light for displaying an image; and a controller for applying a voltage to the second electrode wherein the voltage applied in an initial operation period is different from the voltage applied in an image display period.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: December 20, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Naoya Sugimoto, Yoshihiro Maeda, Fusao Ishii
  • Patent number: 8064125
    Abstract: The present invention provides a display apparatus, comprising: a light source or light sources for emitting a luminous flux or luminous fluxes having a plurality of colors; a spatial light modulator for modulating the luminous flux(es) having a plurality of colors incoming from the light sources; and controller for processing video image input data, which is input, and controlling the light source(s) and the spatial light modulator, wherein the controller generates a plurality of video image signals of colors constituting a video image based on the video image input data, and controls the light source(s) so as to cause the light source(s) having at least two colors, from among the light source(s) having a plurality of colors, to perform pulse emission in sequence and modulate the pulse emission during a period shorter than a modulation period controlled under the spatial light modulator is with the video image signal of one color from among the video image signals.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: November 22, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Taro Endo, Kazuma Arai, Yoshihiro Maeda, Fusao Ishii
  • Patent number: 8061854
    Abstract: The present invention provides a projection apparatus, comprising: a light source; at least one spatial light modulator for modulating illumination light from the light source by a plurality of pixel elements by using different modulation states; a light source control unit performing a modulation control of the light source; and a spatial light modulator control unit generating, from an input image signal, a control signal for driving the spatial light modulator, wherein: the light source control unit has a function of receiving data corresponding to the control signal generated by the spatial light modulator control unit, controlling a parameter of an emission pulse of the illumination light emitted from the light source, and thereby adjusting an emission intensity of the illumination light.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: November 22, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Akira Shirai, Hirokazu Nishino, Yoshiaki Horikawa, Fusao Ishii
  • Patent number: 8064118
    Abstract: This invention provides a display system that receives an image signal containing a binary data of N bits, wherein N is a positive integer, for displaying an image with a grayscale corresponding to the binary data. The display system further includes a data converter for converting M-bit of the N bits of the binary data into a non-binary data, wherein M is a positive integer and N?M, for applying the non-binary data as a sub-frame in controlling the gray scale in displaying the image. In an exemplary embodiment, the data converter converts consecutive M-bit of the N bits of the binary data into the non-binary data. The display system further includes a spatial light modulator (SLM) having a plurality of pixel elements and the SLM receiving the non-binary data of M bits for controlling the pixel elements.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: November 22, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Fusao Ishii, Yoshihiro Maeda, Hirotoshi Ichikawa, Kazuma Arai
  • Patent number: 8061846
    Abstract: A method for controlling a light source of a video image display apparatus, comprising: projecting illumination lights to a first spatial light modulator (SLM) and a second SLM, and changing over a wavelength of one of the illumination lights projected to the second SLM in a sequence during a period when the wavelength of another one of the illumination lights projected to the first SLM is controlled to have a flexibly adjustable wavelength.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: November 22, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Akira Shirai, Fusao Ishii
  • Patent number: 8061856
    Abstract: The present invention provides a projection apparatus, comprising: a light source; a spatial light modulator for modulating the incident light emitted from the light source; a spatial light modulator control unit for generating, from an inputted image signal, a control signal for driving the spatial light modulator; and a light source control unit for receiving data corresponding to the control signal for controlling the light source to operate in one of three states consisted of a driven state, a stopped state and a standby state on the basis of the data.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: November 22, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Akira Shirai, Fusao Ishii
  • Patent number: 8064123
    Abstract: The present invention provides an image display system implemented with a micro-electromechanical system (MEMS) device formed and supported on a substrate functioning as a spatial light modulator wherein the MEMS device further comprises a drive circuit disposed on the substrate; a micromirror functioning as a movable electrode supported on a deflectable hinge extended from the substrate; a stationary electrode disposed on the substrate and connected to the drive circuit to receive signals therefrom, wherein the stationary electrode comprises a first electrode, a second electrode and an insulation layer, wherein the insulation layer is disposed between the first electrode and second electrode.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: November 22, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Yoshihiro Maeda, Hirotoshi Ichikawa, Naoya Sugimoto, Fusao Ishii
  • Patent number: 8045254
    Abstract: The present invention discloses an image display system implemented with a spatial light modulator (SLM) having a plurality of pixel elements wherein each of the pixel elements further comprises an electrode having a structural body comprising: a first electrically conductive layer; a second electrically conductive layer; and a semiconductor layer disposed adjacently to the first electric conductive layer and second electric conductive layer and the semiconductor layer further comprises a doped conductive area for electrically connecting the first electric conductive layer and second electric conductive layer.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: October 25, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Hirotoshi Ichikawa, Yoshihiro Maeda, Fusao Ishii
  • Patent number: 8023172
    Abstract: A mirror device, comprising: a mirror; an electrode which is placed on a substrate and on which surface a cavity is formed; and a hinge placed between the mirror and electrode, wherein the hinge is connected to the cavity of the electrode.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: September 20, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Fusao Ishii, Yoshihiro Maeda, Hirotoshi Ichikawa, Naoya Sugimoto
  • Patent number: 7990339
    Abstract: A micromirror device, which makes an image display with digital image data, comprises pixel elements each of which makes pulse width modulation for incident light depending on the deflection state of light and which are arranged in the form of a matrix. Each of the pixel elements has a mirror, and at least one memory cell comprising a transistor and a capacitor. In such a micromirror device, the total value of the propagation delay time of a ROW line, which connects all of transistors of memory cells arranged successively in a ROW direction, and the switching time of each transistor is smaller than the driving interval of the ROW line driven in the minimum display duration of the micromirror device.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: August 2, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Kazuma Arai, Fusao Ishii, Yoshihiro Maeda