Patents by Inventor Yoshiyuki Yanagisawa

Yoshiyuki Yanagisawa 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: 6891652
    Abstract: A liquid crystal panel (441) has an optical modulator body (500), an accommodating portion (511) for accommodating the optical modulator body (500), a holding frame (510) for pressing and holding the optical modulator body (500) against the accommodating portion (511), and a frame member (512C) made of heat-conductive material and interposed between the optical modulator body (500) and a fixing plate (512), the frame member (512C) being provided on an outer periphery of a first substrate (501A) of a pair of substrates (501A, 501B) disposed on the side of the fixing plate (512), the fixing plate (512) and the frame member (512C) being integrally formed.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: May 10, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Motoyuki Fujimori, Yoshiyuki Yanagisawa
  • Patent number: 6882480
    Abstract: An optical device (44) is provided with an optical modulator (440), a color combining optical device (444) and an optical converting element (443), the optical modulator (440) being attached to the color combining optical device (444) through a position-adjusting spacer (449) made of a heat-insulative material, so that heat generated on the optical modulator (440) and the optical converting element (443) is mutually insulated by the spacer (449) made of heat-insulative material and does not conduct from high-temperature side to low-temperature side between the optical modulator (440) and the optical converting element (443), thus improving cooling efficiency of the optical modulator (440) to enable size reduction and high luminance of the optical device (44) and a projector.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: April 19, 2005
    Assignee: Seiko Epson Corporation
    Inventor: Yoshiyuki Yanagisawa
  • Patent number: 6872635
    Abstract: A method of selectively transferring devices arrayed on a first substrate to a second substrate on which an adhesive resin layer is previously formed is provided. The method includes steps of selectively heating the adhesive resin layer on the second substrate by laser irradiation from the back surface side of the second substrate, and curing the selectively heated portions of the adhesive resin layer, thereby adhesively bonding those to be transferred of the devices to the second substrate. At this time, portions, corresponding to the devices, of the adhesive layer are heated directly or indirectly via the devices or wiring portions by laser irradiation from the back surface side of the substrate. The heated portions of the adhesive resin layer selectively exhibit the adhesive forces. The heated portions of the adhesive layer are then cured, so that only the devices to be transferred are selectively transferred to the second substrate.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: March 29, 2005
    Assignee: Sony Corporation
    Inventors: Kunihiko Hayashi, Yoshiyuki Yanagisawa, Toshiaki Iwafuchi, Hisashi Ohba
  • Publication number: 20050042784
    Abstract: A device transfer method includes the steps of: covering a plurality of devices, which have been formed on a substrate, with a resin layer; forming electrodes in the resin layer in such a manner that the electrodes are connected to the devices; cutting the resin layer, to obtain resin buried devices each containing at least one of the devices; and peeling the resin buried devices from the substrate and transferring them to a device transfer body. This device transfer method is advantageous in easily, smoothly separating devices from each other, and facilitating handling of the devices in a transfer step and ensuring good electric connection between the devices and external wiring, even if the devices are fine devices.
    Type: Application
    Filed: September 23, 2004
    Publication date: February 24, 2005
    Inventors: Yoshiyuki Yanagisawa, Toyoharu Oohata, Toshiaki Iwafuchi
  • Patent number: 6854848
    Abstract: The invention provides a structure to attach a liquid crystal panel to a prism, which enables further enhancements in cooling capabilities. The structure includes a storing member fixed on a base and holding a holding frame, where a liquid crystal panel is held. Erected pieces to form a space to receive the holding frame are formed protruding on both left and right sides at the light incident side. Protrusions to form an air path with a cross-dichroic prism are formed on both left and right sides on the light emitting side. The liquid crystal panel is attached to the cross-dichroic prism through a holding member having an opening at a portion corresponding to the panel face of the liquid crystal panel.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: February 15, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Motoyuki Fujimori, Yoshiyuki Yanagisawa, Taisuke Uehara, Toshiaki Hashizume, Masashi Kitabayashi, Nobuo Watanabe
  • Publication number: 20050012921
    Abstract: The invention provides a holder frame, optical device and projector which can prevent the substrate from deviating in position, the substrate from being compressed at the outer periphery and color unevenness from occurring. More particularly, in the four sides of a luminous-flux incident surface of a holder frame, there can be formed a plurality of cutouts extending from a vicinity of an opening to an outer edge of the luminous-flux incident surface and nearly orthogonal to a lengthwise of each side. Also, in the four sides of an accommodating surface of the holder frame, there are formed a plurality of cutouts extending from a vicinity of an opening to an outer edge of the accommodating surface and nearly orthogonal to a lengthwise of each side. The cutouts in each side of the accommodating surface of the holder frame are formed in positions between the cutouts formed in each side of the luminous-flux incident surface of the holder frame as viewed from a side of luminance-flux incidence.
    Type: Application
    Filed: May 28, 2004
    Publication date: January 20, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Motoyuki Fujimori, Yoshiyuki Yanagisawa
  • Publication number: 20050012910
    Abstract: The invention provides a fixing plate, optical device and projector capable of preventing against color unevenness occurrence and pixel deviation. Specifically, in each of the four sides of a luminous-flux exit surface of a plate part of a fixing plate, there can alternately be formed a first cutout in a groove form extending from an opening toward an outer edge of the plate part and nearly orthogonal to a lengthwise of each side, and a second cutout in a groove form extending from the outer edge toward the opening and nearly orthogonal to the lengthwise of each side.
    Type: Application
    Filed: May 28, 2004
    Publication date: January 20, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Motoyuki Fujimori, Yoshiyuki Yanagisawa
  • Publication number: 20050007556
    Abstract: An optical device 44 comprises incident side transparent members 447A which are interposed between the respective members of light flux incident end surfaces of a cross dichroic prism 444 and three light modulating devices 440 to hold and fix the respective light modulating devices 440. Further, the incident side transparent members 447A are made of a thermal conductive material and at least two incident side transparent members 447A of the three incident side transparent members 447A are different in thermal resistance. As a result, there are provided an optical device which is capable of performing an efficient cooling without damaging silence of a projector and equalizing unevenness in heating quantity in a plurality of optical elements such as light modulating devices, and a projector.
    Type: Application
    Filed: January 30, 2004
    Publication date: January 13, 2005
    Applicant: Seiko Epson Corporation
    Inventor: Yoshiyuki Yanagisawa
  • Patent number: 6830946
    Abstract: A device transfer method includes the steps of: covering a plurality of devices, which have been formed on a substrate, with a resin layer; forming electrodes in the resin layer in such a manner that the electrodes are connected to the devices; cutting the resin layer, to obtain resin buried devices each containing at least one of the devices; and peeling the resin buried devices from the substrate and transferring them to a device transfer body. This device transfer method is advantageous in easily, smoothly separating devices from each other, and facilitating handling of the devices in a transfer step and ensuring good electric connection between the devices and external wiring, even if the devices are fine devices.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: December 14, 2004
    Assignee: Sony Corporation
    Inventors: Yoshiyuki Yanagisawa, Toyoharu Oohata, Toshiaki Iwafuchi
  • Publication number: 20040246390
    Abstract: An optical device and a projector having the same is provided, which has a liquid-crystal display 400 having, on an exit side, a first exit polarizer plate 920 and a second exit polarizer plate 934 arranged thermally insulated from each other by separated in an optical axis direction, the first exit polarizer plate 920 being bonded on a first heat conductor plate 926 bonded on an incident surface of a color-combining optical unit 500while the second exit polarizer plate 934 being bonded on a second heat conductor plate 936 held by a polarization-plate holding frame 904, whereby, by heat release through respective independent routes, it is possible to suppress the deterioration-due to the temperature rise on the exit polarizer plates and liquid-crystal display.
    Type: Application
    Filed: March 12, 2004
    Publication date: December 9, 2004
    Applicant: Seiko Epson Corporation
    Inventor: Yoshiyuki Yanagisawa
  • Publication number: 20040239886
    Abstract: An optical apparatus comprising a color synthesizing prism 500, a plurality of exit-side polarizer plates 920R etc. which are respectively arranged on the light entrance side faces of the color synthesizing prism through entrance-side heat conduction plates, a plurality of liquid-crystal display devices 400R etc. which are respectively arranged on the entrance sides of the plurality of exit-side polarizer plates, and a plurality of entrance-side polarizer plates 918R etc. which are respectively arranged on the entrance sides of the plurality of liquid-crystal display devices, wherein the entrance-side heat conduction plate 926G which is located in the optical path of colored light generating the largest quantity of heat is arranged in heat insulation from the entrance-side heat conduction plates 926R, 926B which are located in the optical paths of the other colored lights, and it is joined to an armoring case 3 through heat conduction members 928, 960, 962.
    Type: Application
    Filed: March 12, 2004
    Publication date: December 2, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yoshiyuki Yanagisawa
  • Patent number: 6819464
    Abstract: A liquid crystal panel (441) has an optical modulator body (500), an accommodating portion (511) for accommodating the optical modulator body (500), a holding frame (510) for pressing and holding the optical modulator body (500) against the accommodating portion (511), and a frame member (512C) made of heat-conductive material and interposed between the optical modulator body (500) and a fixing plate (512), the frame member (512C) being provided on an outer periphery of a first substrate (501A) of a pair of substrates (501A, 501B) disposed on the side of the fixing plate (512), the fixing plate (512) and the frame member (512C) being integrally formed.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: November 16, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Motoyuki Fujimori, Yoshiyuki Yanagisawa
  • Publication number: 20040223237
    Abstract: Heat of optical devices is transferred to a bottom surface portion 512B of an optical parts housing portion 512 of an optical parts casing 5A. A duct 6 is formed on the bottom surface portion 512B. A cooling air passing through a first passage 6A cools the bottom surface portion 512B, and then is supplied to a hole 515R to cool a liquid crystal panel 441R, etc. The cooling air passing through a second passage 6B of the duct 6 is introduced into holes 515B, 515G to cool the liquid crystal panels 441B, 441G. Accordingly, the optical parts casing projector capable of cooling sufficiently the optical modulator devices and other parts, e.g., the bottom surface portion, etc. of the optical parts casing.
    Type: Application
    Filed: February 5, 2004
    Publication date: November 11, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoshiyuki Yanagisawa, Hiroshi Abe
  • Publication number: 20040201877
    Abstract: A liquid crystal panel (441) has an optical modulator body (500), an accommodating portion (511) for accommodating the optical modulator body (500), a holding frame (510) for pressing and holding the optical modulator body (500) against the accommodating portion (511), and a frame member (512C) made of heat-conductive material and interposed between the optical modulator body (500) and a fixing plate (512), the frame member (512C) being provided on an outer periphery of a first substrate (501A) of a pair of substrates (501A, 501B) disposed on the side of the fixing plate (512), the fixing plate (512) and the frame member (512C) being integrally formed.
    Type: Application
    Filed: April 30, 2004
    Publication date: October 14, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Motoyuki Fujimori, Yoshiyuki Yanagisawa
  • Patent number: 6773943
    Abstract: A display unit having a sufficient luminance and a method of fabricating the display unit are provided. The display unit includes micro-sized semiconductor light emitting devices fixedly arrayed on a plane of a base body of the display unit at intervals. Micro-sized GaN based semiconductor light emitting devices formed by selective growth are each buried in a first insulating layer made from an epoxy resin except an upper end portion and a lower end surface thereof, and electrodes of each of the light emitting devices are extracted. These light emitting devices are fixedly arrayed on the upper plane of the base body at intervals. A second insulating layer made from an epoxy resin is formed on the plane of the base body so as to cover the semiconductor light emitting devices each of which has been buried in the first insulating layer.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: August 10, 2004
    Assignee: Sony Corporation
    Inventors: Toyoharu Oohata, Hideharu Nakajima, Yoshiyuki Yanagisawa, Toshiaki Iwafuchi
  • Publication number: 20040137662
    Abstract: A device transfer method includes the steps of: covering a plurality of devices, which have been formed on a substrate, with a resin layer; forming electrodes in the resin layer in such a manner that the electrodes are connected to the devices; cutting the resin layer, to obtain resin buried devices each containing at least one of the devices; and peeling the resin buried devices from the substrate and transferring them to a device transfer body. This device transfer method is advantageous in easily, smoothly separating devices from each other, and facilitating handling of the devices in a transfer step and ensuring good electric connection between the devices and external wiring, even if the devices are fine devices.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Inventors: Yoshiyuki Yanagisawa, Toyoharu Oohata, Toshiaki Iwafuchi
  • Publication number: 20040046940
    Abstract: An optical device (44) is provided with an optical modulator (440), a color combining optical device (444) and an optical converting element (443), the optical modulator (440) being attached to the color combining optical device (444) through a position-adjusting spacer (449) made of a heat-insulative material, so that heat generated on the optical modulator (440) and the optical converting element (443) is mutually insulated by the spacer (449) made of heat-insulative material and does not conduct from high-temperature side to low-temperature side between the optical modulator (440) and the optical converting element (443), thus improving cooling efficiency of the optical modulator (440) to enable size reduction and high luminance of the optical device (44) and a projector.
    Type: Application
    Filed: August 4, 2003
    Publication date: March 11, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yoshiyuki Yanagisawa
  • Publication number: 20040038519
    Abstract: A method for forming via holes includes placing an insulating layer on a first wiring layer, forming opening portions in the insulating layer, and forming a second wiring layer on the insulating layer. At the time of forming the opening portions, the insulating layer is irradiated with a laser beam with the focus position staggered.
    Type: Application
    Filed: December 17, 2002
    Publication date: February 26, 2004
    Inventors: Yoshiyuki Yanagisawa, Toshiaki Iwafuchi
  • Publication number: 20040032569
    Abstract: This invention provides a technique of reducing temperature rise due to heat generation of polarization control elements. A projector includes: an illumination optical system; an electro-optical device for modulating light from the illumination optical system in response to image information; a projection optical system for projecting modulated light obtained with the electro-optical device; and a base frame, formed using material including metal material, for mounting a plurality of optical components arranged on an optical path from the illumination optical system to the projection optical system. At least one of the plurality of optical components is a polarization control component that includes: a polarization control element including organic material for the controlling polarization state of light exiting from the polarization control element; and a light-transmissive member having a thermal conductivity of at least about 0.8 W/(m·K), to which the polarization control element is stuck.
    Type: Application
    Filed: April 21, 2003
    Publication date: February 19, 2004
    Inventors: Takeshi Takezawa, Toshiaki Hashizume, Motoyuki Fujimori, Yoshiyuki Yanagisawa
  • Publication number: 20040021830
    Abstract: A liquid crystal panel (441) has an optical modulator body (500), an accommodating portion (511) for accommodating the optical modulator body (500), a holding frame (510) for pressing and holding the optical modulator body (500) against the accommodating portion (511), and a frame member (512C) made of heat-conductive material and interposed between the optical modulator body (500) and a fixing plate (512), the frame member (512C) being provided on an outer periphery of a first substrate (501A) of a pair of substrates (501A, 501B) disposed on the side of the fixing plate (512), the fixing plate (512) and the frame member (512C) being integrally formed.
    Type: Application
    Filed: June 12, 2003
    Publication date: February 5, 2004
    Applicant: Seiko Epson Corporation
    Inventors: Motoyuki Fujimori, Yoshiyuki Yanagisawa