Patents by Inventor Shuhei Yamamoto

Shuhei Yamamoto 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: 20060009017
    Abstract: Conventional methods of crystallizing a semiconductor film through scanning with a pulse laser have had a problem in that variation in particle diameter or shape of a crystal grain causes variation in characteristics of a thin film transistor, which lowers display quality of a liquid crystal display. In view of this, in a method of crystallizing a semiconductor film according to the present invention, after a step of performing scanning with a first pulse laser, scanning with a second pulse laser, which has a higher energy density than that of the first pulse laser, is performed in a substantially orthogonal direction to a traveling direction of scanning with the first pulse laser. With this method, the semiconductor film can be crystallized uniformly.
    Type: Application
    Filed: June 17, 2005
    Publication date: January 12, 2006
    Inventors: Shigeru Sembommatsu, Shuhei Yamamoto, Mitsuru Suginoya, Hideki Matsumura, Atsushi Masuda
  • Publication number: 20050196778
    Abstract: An apparatus measures individual measurement sites on a DNA chip in a short period of time. The DNA chip is irradiated by light-emitting diodes (LEDs) so as to excite fluorescent dye at each measurement site, and fluorescence emitted from the individual measurement sites is detected all at once. Since substantially uniform measurement conditions can be obtained for each measurement site, measurement accuracy increases. The read mechanism requires less space and is less costly, thereby decreasing the failure rate and virtually eliminating the need for maintenance of the apparatus.
    Type: Application
    Filed: December 17, 2004
    Publication date: September 8, 2005
    Inventors: Shuhei Yamamoto, Muneo Maeshima, Katsunobu Hama, Satoshi Takahashi
  • Publication number: 20040173460
    Abstract: A capillary array electrophoretic device capable of securing a sample plate array and a buffer container three dimensionally on a tray of an autosampler. A tray (700) is provided with a guide groove (701) and a stopper (702) corresponding to guides (715, 716) of sample plate assemblies (710, 711) including a microtiter plate.
    Type: Application
    Filed: April 27, 2004
    Publication date: September 9, 2004
    Inventors: Shuhei Yamamoto, Hiromi Yamashita
  • Publication number: 20040136432
    Abstract: A solid-state laser rod pumping module comprises a stack-type semiconductor laser including a plurality of bar-shaped (or rectangular) components that are stacked in a direction parallel to the axis of a solid-state laser rod, each of the plurality of bar-shaped components including a plurality of laser-light-emitting portions that are aligned and integrated in a direction orthogonal to the axis of the solid-state laser rod. The stack-type semiconductor laser has a large divergence angle in a longitudinal parallel to the axis of the solid-state laser rod.
    Type: Application
    Filed: January 7, 2004
    Publication date: July 15, 2004
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihito Hirano, Shuhei Yamamoto, Yasuharu Koyata, Nicolaie Pavel
  • Patent number: 6738397
    Abstract: A solid-state light source apparatus includes a first excitation laser light source for outputting a laser beam of a first wavelength, a second excitation laser light source for outputting a laser beam of a second wavelength, a difference frequency between the laser beam of the first wavelength and the laser beam of the second wavelength being in a terahertz band, and a semiconductor pseudo phase matching device which is disposed at a place where a first optical axis of the laser beam of the first wavelength overlaps with a second optical axis of the laser beam of the second wavelength, and generates a terahertz beam in a direction coaxial with the first and second optical axes on the basis of irradiation of the laser beams of the first and second wavelengths. Thus, high output and high efficiency terahertz wave generation can be easily and certainly realized while a narrow line width characteristic is maintained.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: May 18, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shuhei Yamamoto, Yoshihito Hirano, Ichiro Shoji, Takunori Taira, Sunao Kurimura
  • Patent number: 6738407
    Abstract: A solid-state laser rod pumping module has a stack-type semiconductor laser including a plurality of bar-shaped components that are stacked in a direction parallel to the axis of a solid-state laser rod. Each bar-shaped component includes a plurality of laser-light-emitting portions that are aligned and integrated in a direction orthogonal to the axis of the solid-state laser rod. The large divergence angle of the stack-type semiconductor can be compensated by including a light focusing component for focusing laser light emitted out of the stack-type semiconductor laser. The focused light is guided by a laser light guiding component disposed in a diffusive reflection tube. A light guiding component guides the focused light onto a solid-state laser rod located within the diffusive reflective tube, while maintaining the length of one side of the cross section of the guided light.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: May 18, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihito Hirano, Shuhei Yamamoto, Yasuharu Koyata, Nicolaie Pavel
  • Publication number: 20030206569
    Abstract: A solid-state laser rod pumping module comprises a stack-type semiconductor laser including a plurality of bar-shaped (or rectangular) components that are stacked in a direction parallel to the axis of a solid-state laser rod, each of the plurality of bar-shaped components including a plurality of laser-light-emitting portions that are aligned and integrated in a direction orthogonal to the axis of the solid-state laser rod. The stack-type semiconductor laser has a large divergence angle in a longitudinal parallel to the axis of the solid-state laser rod.
    Type: Application
    Filed: April 30, 2003
    Publication date: November 6, 2003
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihito Hirano, Shuhei Yamamoto, Yasuharu Koyata, Nicolaie Pavel
  • Patent number: 6594299
    Abstract: A solid-state laser rod pumping module has a stack-type semiconductor laser including a plurality of bar-shaped components that are stacked in a direction parallel to the axis of a solid-state laser rod. Each bar-shaped component includes a plurality of laser-light-emitting portions that are aligned and integrated in a direction orthogonal to the axis of the solid-state laser rod. The large divergence angle of the stack-type semiconductor can be compensated by including a light focusing component for focusing laser light emitted out of the stack-type semiconductor laser. The focused light is guided by a laser light guiding component disposed in a diffusive reflection tube. A light guiding component guides the focused light onto a solid-state laser rod located within the diffusive reflective tube, while maintaining the length of one side of the cross section of the guided light.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: July 15, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshihito Hirano, Shuhei Yamamoto, Yasuharu Koyata, Nicolaie Pavel
  • Patent number: 6567453
    Abstract: A solid-state laser oscillator comprising solid-state laser rods disposed coaxially in series with each other, radiating light when excited, and amplifying the light through stimulated emission. A solid-state laser rod exciting device excites any number of solid-state laser rods with a 90° optical rotator disposed coaxially and arranged between the rods. The rotator rotates a component of the light generated in the axial direction while heat lens compensating devices are disposed coaxially with the solid-state laser rods. A reflecting device and a partial reflection device are disposed coaxially and arranged, outside of the solid-state laser rods and heat lens compensating devices, for propagating the axially generated component of the light. An exciting source driving device drives the exciting sources included in the solid-state laser rod exciting device.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: May 20, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shuhei Yamamoto, Yasuharu Koyata, Yoshihito Hirano
  • Publication number: 20020158260
    Abstract: A solid-state light source apparatus includes a first excitation laser light source for outputting a laser beam of a first wavelength, a second excitation laser light source for outputting a laser beam of a second wavelength, a difference frequency between the laser beam of the first wavelength and the laser beam of the second wavelength being in a terahertz band, and a semiconductor pseudo phase matching device which is disposed at a place where a first optical axis of the laser beam of the first wavelength overlaps with a second optical axis of the laser beam of the second wavelength, and generates a terahertz beam in a direction coaxial with the first and second optical axes on the basis of irradiation of the laser beams of the first and second wavelengths. Thus, high output and high efficiency terahertz wave generation can be easily and certainly realized while a narrow line width characteristic is maintained.
    Type: Application
    Filed: April 15, 2002
    Publication date: October 31, 2002
    Inventors: Shuhei Yamamoto, Yoshihito Hirano, Ichiro Shoji, Takunori Taira, Sunao Kurimura
  • Patent number: 6323923
    Abstract: A reflective type liquid crystal display device has a first transparent substrate, a second transparent substrate, and a light scattering liquid crystal layer disposed between the first and second transparent substrates. A solar cell is disposed on the second transparent substrate. A portion of the solar cell comprises an active element for driving the light scattering liquid crystal layer.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: November 27, 2001
    Assignee: Seiko Instruments R&D Center Inc.
    Inventors: Masafumi Hoshino, Shuhei Yamamoto, Shunichi Motte, Teruo Ebihara, Shigeru Senbonmatsu, Kaori Takano, Osamu Yamazaki, Naotoshi Shino, Takakazu Fukuchi, Hiroshi Sakama
  • Publication number: 20010040095
    Abstract: A capillary array includes a light detection portion, a sample supply portion, a buffer solution supply portion and a voltage application portion which are necessary functions for electrophoresis, thereby, when assembling the capillary array into an electrophoresis apparatus, the same can be immediately used. Accordingly, a capillary array is provided which can be easily incorporated into an electrophoresis apparatus.
    Type: Application
    Filed: May 1, 2001
    Publication date: November 15, 2001
    Inventors: Yasushi Shimizu, Toshiaki Kita, Kiyoshi Tsukada, Akihiro Suzuki, Tomonari Morioka, Masaya Kojima, Ryoji Inaba, Daizo Tokinaga, Shuhei Yamamoto, Yoshiyuki Okishima, Masao Fukunaga, Takayasu Furukawa, Tomohiro Shoji
  • Publication number: 20010040096
    Abstract: A sample plate assembly for an electrophoresis apparatus including a tray at a sample supply portion of a capillary array, an adapter for the tray, a sample plate mounted on the adapter, a septer mounted on the sample plate and a septer holder mounted on the septer. Thereby, many number of samples can be automatically supplied to capillaries in a multi capillary array.
    Type: Application
    Filed: April 27, 2001
    Publication date: November 15, 2001
    Inventors: Shuhei Yamamoto, Hiromi Yamashita, Masatoshi Kitagawa
  • Patent number: 6266113
    Abstract: A reflection type liquid crystal display device according to the present invention is constructed to include: a light modulation layer having a light scattering state changed when a voltage is applied between electrode faces; at least one kind of color separation layer arranged at the back of the liquid crystal; and a reflection layer arranged at the back of the color separation layer. The light modulation layer is a polymer network type polymer scattered liquid crystal layer or a phase conversion type liquid crystal layer, and the color separation mirror is a cholesteric liquid crystal polymer layer or a dielectric multi-layered thin film characterized to reflect a light within a predetermined wavelength range in the visible light region selectively. A reflection preventing layer and an ultraviolet ray cut-off layer are further arranged on the surfaces of the electrode faces.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: July 24, 2001
    Assignee: Seiko Instruments Inc.
    Inventors: Osamu Yamazaki, Shunichi Motte, Teruo Ebihara, Shigeru Senbonmatsu, Kaori Taniguchi, Takakazu Fukuchi, Hiroshi Sakama, Masafumi Hoshino, Naotoshi Shino, Shuhei Yamamoto
  • Patent number: 6215536
    Abstract: A reflective liquid crystal display device comprises a transparent first substrate having formed thereon a transparent electrode, a first filter having a first color, and a second filte having a second color. A second substrate is disposed opposite and spaced-apart from the first substrate. A reflection layer is disposed on the second substrate. A polymer dispersed liquid crystal layer is disposed between the transparent electrode and the reflection layer and is formed by exposure to an ultraviolet ray in a preselected wavelength range. A ratio of a transmissivity of the first filter for the ultraviolet ray to a transmissivity of the second filter for the ultraviolet ray is 3.0 or less.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: April 10, 2001
    Assignees: Seiko Instruments Inc., Seiko Precision Inc.
    Inventors: Teruo Ebihara, Shunichi Motte, Kaori Takano, Shigeru Sembonmatsu, Hiroshi Sakuma, Takakazu Fukuchi, Osamu Yamazaki, Masafumi Hoshino, Naotoshi Shino, Shuhei Yamamoto, Masanori Fujita
  • Patent number: 5990995
    Abstract: A reflection type liquid crystal display device comprises a pair of substrates having electrodes, a light scattering type liquid crystal layer interposed between the substrates, a reflection layer disposed over a rear surface of the light scattering type liquid crystal layer, and a light absorbing layer disposed over a rear surface of the reflection layer for absorbing a light passed through the reflection layer. The light scattering type liquid crystal layer changes into a scattering state or a transparent state in accordance with a change in a voltage level between the electrodes, and transmits 60% or more of incident light irrespective of the change in the voltage level between the electrodes. The reflection layer has a reflectivity within a range of 10 to 50% for reflecting a forward scattered light passed through the light scattering type liquid crystal layer.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: November 23, 1999
    Assignee: Seiko Instruments Inc.
    Inventors: Teruo Ebihara, Osamu Yamazaki, Shunichi Motte, Shigeru Senbonmatsu, Kaori Taniguchi, Naotoshi Shino, Shuhei Yamamoto, Hiroshi Sakama, Masafumi Hoshino, Takakazu Fukuchi
  • Patent number: 5956110
    Abstract: A liquid crystal display panel comprises first and second substrates each having a transparent electrode and an orientation plane, a nematic liquid crystal material disposed between the first and second substrates, a polarizer disposed over the first substrate and the nematic liquid crystal material, and a simplex polymer film comprised of a single optically anisotropic substance disposed between the first substrate and the polarizer. The nematic liquid crystal material has a positive anisotropy of refractive index, a retardation of 0.55 .mu.m to 1.75 .mu.m, and molecules twisted at a high degree with a twist angle of 180.degree. to 270.degree.. The simplex polymer film has a retardation of 20 nm to 200 nm.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: September 21, 1999
    Assignee: Seiko Instruments Inc.
    Inventors: Hiroyuki Fujita, Shigeru Senbonmatsu, Kaori Taniguchi, Shuhei Yamamoto, Theo Welzen
  • Patent number: 5912655
    Abstract: A display device includes a liquid crystal panel, a controller, a common driver and a segment driver. The common driver is powered by a high power supply voltage and outputs row driving waveforms having predetermined voltage levels, which are relatively high. The segment driver is powered by a low power supply voltage and outputs column driving waveforms having predetermined voltage levels, which are relatively low. By this construction, it is not necessary for both the segment and common drivers to be high withstand voltage integrated circuit devices.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: June 15, 1999
    Assignee: Seiko Instruments Inc.
    Inventors: Masafumi Hoshino, Shuhei Yamamoto, Hiroyuki Fujita, Hirotomo Oniwa, Kentaro Yagi, Fujio Matsu
  • Patent number: 5815128
    Abstract: A liquid crystal display panel gray shade driving device comprises first circuitry for applying row signals represented by a set of orthonormal functions to a group of row electrodes throughout one frame by set sequential scanning for each of selecting periods, and second circuitry for sequentially carrying out a dot product computation between the set of orthonormal functions and a set of pixel data consisting of bits, and applying a column signal having a voltage level corresponding to a result of the computation to each of a group of column electrodes in synchronization with the set sequential scanning for each of the selecting periods. The first circuitry has a vertical driver for applying the row signal, by doubling the rate thereof, to the group of row electrodes and repeating the same set sequential scanning at least for two frames of previous and subsequent frames.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: September 29, 1998
    Assignee: Seiko Instruments Inc.
    Inventors: Masafumi Hoshino, Fujio Matsu, Shuhei Yamamoto
  • Patent number: 5696524
    Abstract: A display device includes a vertical driver for applying to row electrodes a set of row signals represented by a set of orthogonal functions supplied by an orthogonal function generator at each selection period by group-sequential scanning within one frame. A dot product processor successively carries out a dot product computation between the set of orthogonal functions and a set of pixel data. A horizontal driver applies to column electrodes column signals having voltage levels determined by the results of the dot product computation at each selection period in synchronization with the group-sequential scanning. A frame memory stores the pixel data for each frame in divided bit form. The dot product processor reads out the set of stored pixel data in divided bit form and executes the dot product computation to produce a column signal component for each respective bit.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: December 9, 1997
    Assignee: Seiko Instruments Inc.
    Inventors: Masafumi Hoshino, Hiroyuki Fujita, Hirotomo Oniwa, Fujio Matsu, Shuhei Yamamoto