Patents by Inventor Kenkichi Suzuki

Kenkichi Suzuki 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: 6341004
    Abstract: A liquid crystal display device including a pair of substrates, a liquid crystal layer interposed between the pair of substrates, a plurality of first common electrodes extending in a direction and being formed on one substrate of the pair of substrates, and a second common electrode connected to one of the first common electrodes. The second common electrode has a first edge adjacent the one of the first common electrodes and a second edge opposite to the one of the first common electrode. A first pixel electrode is formed between two of the first common electrodes and extends in the same direction as the first common electrodes. A second pixel electrode overlaps the second common electrode, is connected to the first pixel electrode, and covers at least a portion of the first edge of the second common electrode.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: January 22, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenkichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
  • Publication number: 20010052957
    Abstract: A process for manufacturing a liquid crystal display device and a liquid crystal display device in which the orientation film formed on a substrate is irradiated by polarized UV light while heating the substrate.
    Type: Application
    Filed: July 26, 2001
    Publication date: December 20, 2001
    Inventors: Masahito Ohe, Shigeru Matsuyama, Kenkichi Suzuki, Masaaki Matsuda
  • Patent number: 6295110
    Abstract: A polarized light irradiation method for achieving both wide view-field angles and display uniformity with less display irregularity as well as an apparatus for use in attaining this polarized light irradiation method. After reshaping output light from a light source 100 into a beam pattern BP, a polarized light separation plate 108 is used to separate therefrom only P-polarized wave components while simultaneously causing the polarizing axis of the separated P-polarized wave components to be identical to the short side direction of the rectangular beam pattern BP thereby letting it pass through an organic high-molecular or polymeric film acting as an optical radiation surface 110 for addition of a liquid crystal orientation controllability thereto.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: September 25, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Masahito Ohe, Shigeru Matsuyama, Kenkichi Suzuki, Masaaki Matsuda
  • Patent number: 6274888
    Abstract: A semiconductor device has a thin film transistor including an insulating substrate, an island made of a polycrystalline semiconductor material and disposed on the insulating substrate, a conductive layer made of the polycrystalline semiconductor material and at least one of metals and metallic silicides and surrounding the island, a source region and a drain region spaced from the source region, the source region and the drain region being formed in said island, a gate electrode disposed on the island with an insulating film interposed between the island and the gate electrode, the gate facing a spacing between the source region and the drain region.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: August 14, 2001
    Assignee: Hitachi, LTD
    Inventors: Kenkichi Suzuki, Tetsuya Nagata, Michiko Takahashi, Masakazu Saito, Toshio Ogino, Masanobu Miyano
  • Patent number: 6124915
    Abstract: A liquid crystal display device has a plurality of pixel elements, the optical transmissivity of which is varied by suitable electrical signals. The liquid crystal display device has electrodes which apply electric fields to a liquid crystal layer, the electric fields having components in a direction generally parallel to the liquid crystal layer. Each pixel element has at least one pixel electrode which extends in a common direction as a signal electrode and common electrodes which extend over several pixel elements. The common electrodes may be on the same side of the liquid crystal layer as the pixel and signal electrodes, or they may be on opposite sides. Each pixel may have two pixel electrodes with the signal electrode disposed therebetween, and there are then a pair of common electrodes with the pixel electrodes therebetween. The common electrodes may be common to adjacent pixel elements. The pixel electrodes and the common electrodes may be separated by an insulating film.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: September 26, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenkichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
  • Patent number: 5737051
    Abstract: The liquid crystal display device has a plurality of pixel elements, the optical transmissivity of which is varied by suitable electrical signals. The liquid crystal display device has electrodes which apply electric fields to a liquid crystal layer, the electric fields having components in a direction generally parallel to the liquid crystal layer. Each pixel element has at least one pixel electrode which extends in a common direction as signal electrodes and common electrodes which extend over several pixel elements. The common electrodes may be on the same side of the liquid crystal layer as the pixel and signal electrodes, or they may be on opposite sides. Each pixel may have two pixel electrodes with the signal electrode therebetween and there are then a pair of common electrodes with the pixel electrodes therebetween. The common electrodes may be common to adjacent pixel elements. The pixel electrodes and the common electrodes may be separated by an insulating film.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: April 7, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenkichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
  • Patent number: 5627926
    Abstract: An information indicator suitable for information processors such as personal computers, word processors and the like includes a light source, a scattering plate which scatters light from the light source, an indicator plate irradiated with scattered light from the scattering plate, and a prism plate operatively arranged with respect to the scattering plate and the indicator plate and having a prism-like protuberance structure formed at a side thereof. The prism plate is so disposed that the prism-like protuberance structure faces the scattering plate, and the angle 2.theta. constituting the prism-like protuberance structure is defined by the formula, 2.theta..ltoreq.2/3.times.(.pi./2+2.times.arcsin (n'/n)), in this inequality, n is the refractive index of said prism plate medium, and n' is the refractive index of a material in which the prism plate is arranged.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: May 6, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Shigeru Nakamura, Akira Arimoto, Kenkichi Suzuki, Katsuhiko Shibata
  • Patent number: 5598285
    Abstract: A liquid crystal display device has a plurality of pixel elements, the optical transmissivity of which is varied by suitable electrical signals. The liquid crystal display device has electrodes which apply electric fields to a liquid crystal layer, the electric fields having components in a direction generally parallel to the liquid crystal layer. Each pixel element has at least one pixel electrode which extends in a common direction as a signal electrode and common electrodes which extend over several pixel elements. The common electrodes may be on the same side of the liquid crystal layer as the pixel and signal electrodes, or they may be on opposite sides. Each pixel may have two pixel electrodes with the signal electrode disposed therebetween, and there are then a pair of common electrodes with the pixel electrodes therebetween. The common electrodes may be common to adjacent pixel elements. The pixel electrodes and the common electrodes may be separated by an insulating film.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: January 28, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenkichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
  • Patent number: 5581579
    Abstract: In a digital wireless communication system operating between a first unit and a second unit, the first unit transmits a digitally encoded RF signal at a first frequency in a plurality of a non-contiguous time slots to the second unit. The second unit receives the digitally encoded RF signals. The received RF digitally encoded signal is converted to an intermediate frequency (IF). An A to D converter samples the received IF digitally encoded signals and generates a plurality of discrete binary symbols during one of the plurality of non-contiguous time slots. A phase error signal is generated for each one of the plurality of discrete binary symbols. A frequency error signal is generated for the subsequent symbol in accordance with .DELTA.f(n+1)=.DELTA.f(n)+g.sub.1 (.crclbar.(n)-.crclbar.(n)). The conversion of the RF signal to intermediate frequency is controlled in response to the frequency error signal.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: December 3, 1996
    Assignee: TCSI Corporation
    Inventors: Nan-Sheng Lin, Ravi Subramanian, Kenkichi Suzuki
  • Patent number: 5555112
    Abstract: In a liquid crystal display substrate in which the pixel electrode is applied with a voltage through the drain and source of a thin-film transistor (TFT) that conducts by a voltage applied to the TFT gate electrode, this gate electrode and a busline connected to the gate electrode are formed as a multi-layered structure consisting of a gate layer and at least two layers of a gate insulation film and an amorphous silicon film. The multi-layered structure is formed by etching through a single mask.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: September 10, 1996
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Ryoji Oritsuki, Minoru Hiroshima, Masahiro Yanai, Masaaki Matsuda, Toshikazu Horii, Yuichi Hashimoto, Hayao Kozai, Kenkichi Suzuki, Masaru Takabatake, Takashi Isoda
  • Patent number: 5537054
    Abstract: A testing method is provided for a semiconductor device which includes a control terminal and a pair of main terminals wherein one of the main terminals is isolated from the outside by a dielectric. First, a voltage which changes with time is applied to the isolated main terminal through the dielectric. A control signal which controls conduction and non-conduction of the semiconductor device is the applied to the control terminal. Following this, the test is made by detecting a displacement current flowing through at least one of the two main terminals and the control terminal.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: July 16, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Masayoshi Suzuki, Jun-ichi Ohwada, Masaaki Kitazima, Hideaki Kawakami, Kenkichi Suzuki
  • Patent number: 5519523
    Abstract: A liquid crystal display device comprising: (a) a liquid crystal layer arranged between substrates each having an electrode; (b) a pair of polarizers arranged so as to sandwich the liquid crystal layer; (c) a birefringent medium arranged between the liquid crystal layer and at least one of the polarizers, when a voltage is applied so that liquid crystal molecules at boundary regions facing said substrates have different tilt angles from other molecules, retardation in said birefringent medium being equal or close to remaining retardation due to the liquid crystal molecules at boundary regions, and the slow axis of said birefringent medium being set for an angle to compensate for said remaining retardation; and (d) control means for changing transmission of said liquid crystal layer by applying voltages of two or more values between said electrodes.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: May 21, 1996
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Hitomi Madokoro, Ikuo Hiyama, Junichi Hirakata, Hidetoshi Abe, Katsumi Kondo, Masaaki Kitajima, Shinichi Komura, Kenkichi Suzuki, Osamu Itoh, Naoki Kikuchi
  • Patent number: 5467417
    Abstract: An information indicator suitable for information processors such as personal computers, word processors and the like includes a light source, a scattering plate which scatters light from the light source, an indicator plate irradiated with scattered light from the scattering plate, and a prism plate operatively arranged with respect to the scattering plate and the indicator plate and having a prism-like protuberance structure formed at a side thereof. The prism plate is so disposed that the prism-like protuberance structure faces the scattering plate, and the angle 2.theta. constituting the prism-like protuberance structure is defined by the formula, 2.theta.>2/3.times.(.pi./2+2.times.arcsin (n'/n)), in this inequality, n is the refractive index of said prism plate medium, and n' is the refractive index of a material in which the prism plate is arranged.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: November 14, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Shigeru Nakamura, Akira Arimoto, Kenkichi Suzuki, Katsuhiko Shibata
  • Patent number: 5400368
    Abstract: In a digital wireless communication system, a first unit transmits a digitally encoded signal to a second unit in a plurality of non-contiguous time slots. Within each time slot, the digitally encoded signal has a synchronization signal portion followed by a data signal portion. The second unit has an antenna to receive the synchronization signal portion of the digitally encoded signal. The second unit also has a clock to generate a clock signal at a first rate having a sampling phase. An analog to digital converter receives the clock signal and the synchronization signal and samples the synchronization signal at the first rate to generate a first plurality of symbols. An interpolator receives the first plurality of symbols and interpolates the first plurality of symbols to generate a second plurality of symbols at a second rate. The second rate is a multiple of the first rate.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: March 21, 1995
    Assignee: Teknekron Communications Systems, Inc.
    Inventors: Jong-Keung Cheng, Nan-Sheng Lin, Mihran Touriguian, Kenkichi Suzuki
  • Patent number: 4799058
    Abstract: A driving apparatus for a gas discharge display panel having a plurality of cathodes and a plurality of anodes arranged in a matrix includes a cathode pulse generator and an anode pulse generator, with the anode pulse generator generating negative display anode pulses made up of auxiliary discharge pulses (width=tS) and display pulses of smaller pulse width (width=tD, tD.ltoreq.tS) corresponding to information display signals. The anode pulse generator preferably also provides positive display anode pulses so that selection between negative and positive display anode pulses is possible.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: January 17, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Okamoto, Shinichi Shinada, Kenkichi Suzuki, Akihiko Kougami
  • Patent number: 4481265
    Abstract: A photovoltaic-storage battery device is disclosed, which comprises a substrate having a pair of major surfaces, a photovoltaic element formed on one major surface of the substrate and including a pair of opposing electrodes and a photoelectric film intervening between the pair of opposing electrodes and a storage battery element formed on the other major surface of the substrate and including a second pair of opposing electrodes which are connectable to the first-mentioned pair of opposing electrodes, respectively, and an electrolyte intervening between the second-mentioned pair of opposing electrodes.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: November 6, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Masayoshi Ezawa, Akira Misumi, Kenkichi Suzuki, Masaharu Kumada
  • Patent number: 4437731
    Abstract: A novel alignment film for liquid crystal is prepared by depositing an organic solvent solution of an alkylalkoxy silane and an alkoxymetallic compound of Ti, Zr, Ge onto an electrode-side surface of substrate, and curing the solution on the substrate by heating.The alignment film shows good alignment for various types of liquid crystals and has long life.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: March 20, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Ryoichi Sudo, Fusaji Shoji, Takeshi Watanabe, Kenkichi Suzuki, Michio Ooue