Patents by Inventor Yutaka Nakai

Yutaka Nakai 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: 20020030785
    Abstract: A reflective display having a first substrate having a first electrode, a second substrate having a second electrode and arranged opposite to the first electrode, and partition walls existing between the first and second substrates and arranged in a direction not perpendicular to the first and second substrates. A non-conductive liquid in which colored particles are dispersed resides in a cell including the partition walls. The colored particles can moved by an electric field, and the display color is thereby changed. Alternatively, the display color can be changed by shape deformation of a liquid-crystal-filled microcapsule enclosed in the cell.
    Type: Application
    Filed: August 31, 2001
    Publication date: March 14, 2002
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Shintaro Enomoto, Hideyuki Nakao, Hajima Yamaguchi, Yutaka Nakai
  • Publication number: 20020005434
    Abstract: This invention provides an information recording medium including a substrate, and a print pattern formed on the substrate and containing a first colorant which changes at least one of a color and a dielectric constant thereof upon application of an electromagnetic field having a first intensity, and a second colorant which behaves differently from the first colorant upon application of the electromagnetic field, a method of reproducing information recorded on the medium, and a method of discriminating an information recording medium whose genuineness is unknown between a genuine article and a counterfeit when the above medium is used as the genuine article.
    Type: Application
    Filed: June 19, 2001
    Publication date: January 17, 2002
    Inventors: Teruo Murakami, Seizaburo Shimizu, Masao Tanaka, Katsuyuki Naito, Hideyuki Nakao, Yutaka Nakai, Yuko Kizu, Hiroki Iwanaga, Aira Hotta, Shintaro Enomoto, Shuzo Hirahara
  • Publication number: 20010030730
    Abstract: A liquid crystal display comprises a substrate, a liquid crystal layer disposed on the substrate; and a sealing part surrounding the liquid crystal layer and disposed on the substrate,
    Type: Application
    Filed: February 27, 2001
    Publication date: October 18, 2001
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hiroki Iwanaga, Masao Tanaka, Yutaka Nakai, Katsuyuki Naito, Seizaburo Shimizu
  • Patent number: 6219119
    Abstract: A reflector including a reflecting surface having hills and valleys, and light-condensing regions disposed above the hills. The light-condensing regions have a larger refractive index than other regions around it. The reflecting surface may include a substrate of, for example, resin or the like having hills and valleys thereon, and a layer of a high-reflectance metal of, for example, aluminium, silver or the like disposed on the substrate. The light-condensing regions are selectively disposed on each hill of the reflecting surface so that the incident rays entering the greatly inclined region between the hill and an adjacent valley on the reflecting surface are condensed in the hill.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: April 17, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Nakai
  • Patent number: 6144429
    Abstract: A liquid crystal display device comprises a reflector made of a high-reflectance material, a light scattering layer formed on the reflector, the light scattering layer containing light scattering particles introduced into a transparent resin, a first transparent electrode formed on the light scattering layer, a transparent substrate opposed to the light scattering layer with a prescribed gap interposed therebetween, a second transparent electrode formed on the transparent substrate and having a portion that is opposed to the first transparent electrode, and a layer of a guest-host type liquid crystal introduced into the gap between the light scattering layer and the transparent substrate and having a portion that is sandwiched between the first and the second transparent electrode.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: November 7, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Nakai, Masahiko Akiyama
  • Patent number: 6072454
    Abstract: A liquid crystal display device of the present invention includes a liquid crystal layer intervened between a first and a second electrode; a circuit for applying a first data signal; a circuit for applying a second data signal; a circuit for holding a selecting signal; and a selecting circuit for applying the first data signal or the second data signal to the first electrode corresponding to the selecting signal held in the holding means. A state of applying the first data signal to a pixel and a state of applying the second data signal to the pixel are determined corresponding to a selecting signal. Since these two states are held by the holding circuit, the selecting signal is not required to be applied when an image displayed does not change, and power consumption is lowered extensively.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: June 6, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Nakai, Masahiko Akiyama, Tsuyoshi Hioki
  • Patent number: 6067134
    Abstract: Some conventional liquid crystal display devices were hard to make connection to a pixel electrode interposed between liquid crystal layers when a picture element is configured by laminating a plurality of liquid crystal layers. The liquid crystal display device comprises a first substrate having a first applying means for applying a first signal; a first electrode opposed to the first substrate; at least one liquid crystal layer interposed between the first substrate and the first electrode; a pillar made of an insulating material, formed on the first substrate so as to have a lateral face and to pierce through the liquid crystal layers; and at least one first wiring pattern formed on the lateral face of the pillar to connect the first applying means and the first electrode. Specifically, this liquid crystal display device has the pillar and the wiring pattern formed on the lateral face of the pillar as the inter-connector to connect to the pixel electrode interposed between the liquid crystal layers.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: May 23, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiko Akiyama, Yutaka Nakai
  • Patent number: 6041274
    Abstract: A pickup sensor for picking up an image on a floor is installed on a mobile body with a working machine mounted thereon in order to correct for the position deviation of a working machine due to possible deviation in the stop position of a mobile body to always ensure accurate working without increasing the working time of the overall system at the time of stopping the mobile body at a predetermined position and allowing said working machine to perform predetermined operation according to previously given teaching data. At the time the teaching data is given, the pickup sensor picks up an image (reference picked image) including a regular pattern and a predetermined identification mark formed on a floor. At the time the working machine works, the pickup sensor also picks up an image (on-pause picked image) on the floor surface at the stop position.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: March 21, 2000
    Assignee: Shinko Electric Co., Ltd.
    Inventors: Masanori Onishi, Masanao Murata, Yutaka Nakai, Katsumi Yasuda, Tsukasa Sugino, Susumu Nakagawa, Kouji Miura
  • Patent number: 5986724
    Abstract: A liquid crystal display device having a liquid crystal layer driven by a data signal which comprises a TFT for selecting the data signal; and a ferroelectric layer of which a polarized state is controlled corresponding to the data signal selected by the TFT, and the liquid crystal layer responds to the polarized state of the ferroelectric layer, and the liquid crystal layer is driven when the liquid crystal layer responds to the polarized state of the ferroelectric layer. Since the ferroelectric layer can keep stable the polarized state for a long duration, a driving frequency can be reduced substantially to a substantially DC level, and power consumption is reduced to a great extent. In addition, the ferroelectric layer formed in a pixel divides the liquid crystal corresponding to the polarized domains of the ferroelectric layer, thereby showing an analogous grayscale image.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: November 16, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiko Akiyama, Tsuyoshi Hioki, Yutaka Nakai
  • Patent number: 5867151
    Abstract: On a transparent substrate of a coordinate input device are formed a plurality of first wirings formed on a light transmitting substrate to extend in parallel in a first direction, and a plurality of second wirings extending in a second direction perpendicular to the first direction. Each of the second wirings is removed at the intersection with the first wiring to form intermittent divided sections. A flexible electrode is also formed on the substrate to bring two adjacent divided sections of the second wiring into an electrical contact with each other, and faces the first wiring located between the divided section, with a free space defined therebetween. When an external pressure is applied toward the first wiring, the flexible electrode, which is connected to the second wiring, is deformed so as to be brought into an electrical contact with the corresponding first electrode. The light transmitting substrate is arranged to face a counter substrate of a liquid crystal display device.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: February 2, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Nakai
  • Patent number: 5790215
    Abstract: This invention is a liquid crystal display device including a reflecting plate formed above a substrate, and a liquid crystal cell formed by alternately, repeatedly stacking a liquid crystal layer and a transparent electrode layer at least once on the reflecting plate, wherein the liquid crystal layer includes a thin film constituted by a microcapsulated guest-host liquid crystal containing dye molecules and liquid crystal molecules.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: August 4, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsushi Sugahara, Norihiko Kamiura, Yutaka Nakai, Katsuyuki Naito, Kohei Suzuki
  • Patent number: 5725894
    Abstract: A coccidiosis-relieving agent comprising cashew nut shell oil and/or anacardic acids as an active ingredient and a feed for relieving coccidiosis comprising cashew nut shell oil and/or anacardic acids. Cecal lesions of livestock and poultry, in particular poultry such as fowl, can be relieved by adding cashew nut shell oil and/or anacardic acids to a feed. The coccidiosis-relieving agent according to the present invention does not completely inactivate Coccidium protozoa, but induces slight infection to immunize an animal, thus achieving a so-called "passive immunological effect". The coccidiosis-relieving agent is efficacious in allowing Coccidium protozoa to grow and imparting sufficient immunological stimuli while relieving lesions to thereby lessen damage to poultry such as fowls.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: March 10, 1998
    Assignee: Takasago International Corporation
    Inventors: Masaaki Toyomizu, Yutaka Nakai
  • Patent number: 5691786
    Abstract: A liquid crystal display device includes storage capacitive elements and compensating storage capacitive elements, both dedicated to pixel electrodes, respectively, and both having cut regions, respectively. When the storage capacitive elements are separated from the storage capacitive lines for repair, the compensating storage capacitive elements are separated from the pixel electrodes, thereby restraining a change in a voltage applied to the pixels and minimizing a change in display characteristics due to repair.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: November 25, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Nakai
  • Patent number: 5392143
    Abstract: A liquid crystal display provides redundant circuits to ensure reliable operation of all pixels of a display and includes a substrate, a scanning line formed on the substrate, a pixel electrode formed on the substrate, a first switching element which is switched on and off in accordance with a potential level of the scanning line, a second auxiliary switching element which is initially electrically isolated from the pixel electrode by a switchable link.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: February 21, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiko Akiyama, Yutaka Nakai
  • Patent number: 5373379
    Abstract: Disclosed is a wiring for an electronic circuit, comprising a substrate, a first conductor layer formed on said substrate, an insulating layer formed on said insulating layer, and a second conductor layer formed on said insulating layer such that said second conductor layer overlaps with at least a part of said first conductor layer, wherein an inner portion of at least one of the overlapping portions of said first conductor layer and said second conductor layer is removed at least partially to cause the peripheral portion to remain unremoved at least partially, thereby decreasing the area of the overlapping portion.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: December 13, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Nakai