Patents by Inventor Yoshiyuki Kaneko

Yoshiyuki Kaneko 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: 20050110389
    Abstract: Inside an outer frame, which is interposed at between opposedly facing peripheries between a back substrate and a front substrate, there is an inner frame which fixes both end portions of plate member control electrodes, which are constituted of a large number of parallel strip-like electrode elements. By integrally forming the plate member control electrodes such that the plate member control electrodes are fixed to both end portions of a display region, a single part is formed. Further, a getter chamber is formed between the outer frame and the inner frame and getters are accommodated in the getter chamber. Due to such a constitution, the operability and yield rate of products at the time of assembling can be enhanced. Further, it is possible to hold a desired degree of vacuum in the space between the substrates for a long time.
    Type: Application
    Filed: May 22, 2003
    Publication date: May 26, 2005
    Inventors: Yuuichi Kijima, Yoshiyuki Kaneko, Shigemi Hirasawa, Susumu Sasaki, Tomoki Nakamura, Hiroshi Kawasaki, Jun Ishikawa
  • Patent number: 6896979
    Abstract: The present invention provides a film for use in organic EL device, having a sufficient gas-barrier property for protection of organic EL device, and an organic EL device structure using such a film. That is, the present invention provides a film for use in organic EL device, made of an organic inorganic hybrid material whose molecules have an organic skeletal moiety and an inorganic skeletal moiety and contain fluorine group and siloxane group.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: May 24, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Yuichi Sawai, Tomoji Oishi, Yoshiyuki Kaneko, Sukekazu Aratani
  • Patent number: 6885385
    Abstract: An image display apparatus includes a display having data holding function, a vertical drive circuit sequentially and selectively scanning matrix form display elements, and a horizontal drive circuit writing a voltage among binary voltage preliminarily assigned depending upon the digital data of the image signal. The horizontal drive circuit and the vertical drive circuit are operated for performing selective scan of respective display element for at least m times in one frame period. The vertical drive circuit is constituted of n number of sequence circuits and logic operation circuits for outputs of the sequence circuits, where n is smaller than m, a period from inputting to the sequence circuit to outputting from the final stage being less than or equal to half of one frame period, and at least one of the sequence circuits being used with selectively inputting a plurality of inputs.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: April 26, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Takayuki Ouchi, Yoshiyuki Kaneko, Toshihiro Satou, Yoshiro Mikami
  • Publication number: 20050082959
    Abstract: To obtain a paste for electron sources which can enhance heat resistance of carbon nanotubes, which can suppress burn-out of the carbon nanotubes even during heating at a high temperature, and can exhibit a high electron emission performance, boron (B) is added to the paste formed of the carbon nanotubes and metal. Due to the addition of boron, the oxidation of the carbon nanotubes can be suppressed, and the degradation of the electron emission characteristics and the degradation of the uniformity of the emission of electrons during the heating process such as baking can be prevented.
    Type: Application
    Filed: October 22, 2004
    Publication date: April 21, 2005
    Inventors: Susumu Sasaki, Yoshiyuki Kaneko, Shigemi Hirasawa, Yuuichi Kijima, Kenji Miyata
  • Patent number: 6882113
    Abstract: An organic LED (OLED) display device and an operating method of driving the same. In an OLED image display device, one switch transistor is provided in one pixel. For at least a part of an OFF period of time of the switch transistor, the OLED is in the non-light emission state, and also the bias of the polarity reverse to that in the light emission is applied to the OLED.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: April 19, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiyuki Kaneko, Takayuki Ouchi, Nobuaki Kabuto, Toshihiro Sato
  • Publication number: 20050062694
    Abstract: To detect a dark current when an abnormal discharge occurs between an anode and respective electrodes, on an inner surface of a front substrate, a dark current detection electrode is formed in a state that the dark current detection electrode is positioned adjacent to the outside of a screen display region on which an anode is formed and on a plane substantially equal to a plane on which the anode is formed. Then, between an electrode terminal of the dark current detection electrode and a ground, an ammeter which detects the flow of a dark current and a DC power source having a preset voltage value which is more or less lower than a high voltage supplied to the anode are connected in series.
    Type: Application
    Filed: September 1, 2004
    Publication date: March 24, 2005
    Inventors: Tomoki Nakamura, Yoshiyuki Kaneko, Toshifumi Ozaki
  • Publication number: 20050052117
    Abstract: A field strength between a control electrode in a non-aperture region and an electron emission layer is set such that an emission current between the electron emission layer and the control electrode assumes a value equal to or less than a threshold emission current density. On the other hand, a surface field strength of the electron emission layer in an aperture region is set such that, to obtain the desired brightness, an emission current between the electron emission layer and an anode becomes an operational current density.
    Type: Application
    Filed: September 10, 2004
    Publication date: March 10, 2005
    Inventors: Toshifumi Ozaki, Tomoki Nakamura, Susumu Sasaki, Yoshiyuki Kaneko
  • Patent number: 6850219
    Abstract: A display device is constituted by a display module which determines a plurality of pieces of pixels as belonging to one block unit, selects the plurality of pixels in each block unit at the same time and displays a picture image by adding one or a plurality of specific patterns each having different spatial frequencies of each block unit; a display control unit which controls the display module; a picture image signal generation unit which generates picture image signals; and a computing circuit which generates the specific patterns each having different spatial frequencies while weighting the same based on the picture image signals for every block unit. Thereby, a display device which reduces the signal clock frequency as well as increases the signal writing time, enhances the opening rate of an LC panel and permits a highly fine display and a high speed motion picture display, is obtained.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: February 1, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuya Aoyama, Shinichi Komura, Ikuo Hiyama, Tsunenori Yamamoto, Yoshiyuki Kaneko, Mitsuji Ikeda, Osamu Itou, Hideo Satou, Shoichi Hirota
  • Publication number: 20040251811
    Abstract: For absorbing a high voltage when an abnormal discharge is generated between an anode and another electrode, between an anode ADE and a control electrode G1, a surge current absorbing electrode G2 which has a plurality of electron beam passing holes AHL which allow electron beams to pass therethrough is arranged, and a DC bias power source DCG and a spark gap SG are connected in parallel between the surge current absorbing electrode G2 and a ground surface.
    Type: Application
    Filed: June 2, 2004
    Publication date: December 16, 2004
    Inventors: Tomoki Nakamura, Yoshiyuki Kaneko
  • Patent number: 6822388
    Abstract: A display device of the present invention reduces the occurrence of cracks and breaking of plate-like control electrodes, enhances the operability of assembling and suppresses the reduction of a yield factor of products. The display device includes a back substrate which has a plurality of cathode lines which extend in one direction, are arranged in parallel in another direction which crosses one direction and include electron sources respectively, and a plurality of control electrodes which cross the cathode lines in a non-contact manner within a display region, extend in another direction and are arranged in parallel in one direction on an inner surface thereof, and a front substrate which has anodes and phosphors on an inner surface thereof and faces the back substrate with a given distance therebetween. The control electrodes are formed of plate-like control electrodes.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: November 23, 2004
    Assignees: Hitachi, Ltd., Hitachi Device Engineering, Co.
    Inventors: Yuuichi Kijima, Kenji Miyata, Yoshiyuki Kaneko, Shigemi Hirasawa, Susumu Sasaki, Hiroshi Kawasaki, Jun Ishikawa
  • Publication number: 20040196219
    Abstract: Pixels in a picture image display device are driven in such a manner that while introducing light, a quenching period is initiated in which electro optical elements in the pixels are quenched after scanning a plurality of gate lines for displaying one picture image. In other words, the pixels are driven while interposing the light quenching period in which the electro optical elements are quenched between one frame and a subsequent frame. Thereby, the phenomenon of blurred edges at the time of motion picture display, when the pixels including the electro optical elements are driven through an active matrix drive circuit, is suppressed and the picture quality of the picture image display device is improved.
    Type: Application
    Filed: April 12, 2004
    Publication date: October 7, 2004
    Inventors: Yoshiyuki Kaneko, Sukekazu Aratani
  • Publication number: 20040189167
    Abstract: Light-emitting devices and light-emitting displays for realizing bright display by allowing light emitted from an emissive layer to efficiently contribute to a display. Polarization separators are arranged between the emissive layer and a phase plate. In the light of a wavelength range which includes a part or all of a light-emission wavelength range of the emissive layer and is narrower than a visible wavelength range and is directed from the emissive layer side to the polarization separators side, the polarization separators reflect circularly polarized light components which are converted into linearly polarized light that is absorbed by the polarizer due to the operation of the phase plate and transmit the other light.
    Type: Application
    Filed: April 1, 2004
    Publication date: September 30, 2004
    Inventors: Masaya Adachi, Yoshiyuki Kaneko, Sukekazu Aratani, Shingo Ishihara
  • Publication number: 20040164665
    Abstract: A display device includes a face substrate which has anodes and phosphors on an inner surface thereof, a back substrate which has cathode lines and electron sources formed on the cathode lines, a support body which is interposed between both substrates in a state that the support body surrounds a display region and forms a given inner space, and a sealing material which hermetically seals the support body and both substrates. To enable the display device to perform a high quality display and to have a long lifetime while ensuring the conduction in a wide range between the cathode lines and the electron sources, the cathode lines are made of a material having a conductor and an insulator and the composition of a connecting portion between the cathode line and the electron source is formed such that a conductor occupancy rate becomes equal to or more than an insulator occupancy rate.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 26, 2004
    Inventors: Susumu Sasaki, Yoshiyuki Kaneko, Shigemi Hirasawa, Makoto Okai, Hiroshi Kawasaki
  • Publication number: 20040137658
    Abstract: The present invention provides the following methods and displays. A method for manufacturing an EL display panel, having the step of forming a light-emitting layer by irradiating light on a photothermal conversion layer through a transparent base member while a dye layer of a transfer member having the transparent base member, the photothermal conversion layer and this fluorescent dye layer is kept in close contact with an object to which the dye is to be transferred, the transparent base member, the photothermal conversion layer and the transfer member being laminated in this order, so that the dye can be transferred to the object. An EL display panel produced according to this method, an image display having this panel, and a method for manufacturing the image display.
    Type: Application
    Filed: March 11, 2004
    Publication date: July 15, 2004
    Inventors: Sukekazu Aratani, Yoshiyuki Kaneko, Makoto Tsunmura
  • Patent number: 6753834
    Abstract: In an active matrix display device utilizing electro-optical elements such as organic EL elements capable of obtaining a high image quality with a low power, each pixel circuit is provided with: a sampling circuit for sampling a signal voltage on a signal wiring line synchronously with a scan pulse; a reference voltage; and a comparator circuit. In the pixel circuit, the sampled signal voltage is compared with the reference voltage and the display time of each EL device is controlled by the period until the relation between the signal voltage and reference voltage is inverted, to thereby control the light emission time in one frame period.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: June 22, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiro Mikami, Yoshiharu Nagae, Toshihiro Sato, Yoshiyuki Kaneko, Shosaku Tanaka
  • Patent number: 6738034
    Abstract: Pixels in a picture image display device are driven in such a manner that while introducing light, a quenching period is initiated in which electro optical elements in the pixels are quenched after scanning a plurality of gate lines for displaying one picture image. In other words, the pixels are driven while interposing the light quenching period in which the electro optical elements are quenched between one frame and a subsequent frame. Thereby, the phenomenon of blurred edges at the time of motion picture display, when the pixels including the electro optical elements are driven through an active matrix drive circuit, is suppressed and the picture quality of the picture image display device is improved.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: May 18, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiyuki Kaneko, Sukekazu Aratani
  • Publication number: 20040090171
    Abstract: To realize a field emission type image display device which can obtain a high current density at low voltage driving, assuming a diagonal screen size of the display region as D(mm), the number of the pixels which are arranged in the x direction as Nh, the number of the pixels which are arranged in the y direction as Nv, a distance between the electron passing apertures formed in the strip-like electrode elements which constitute the control electrodes as db(mm), a distance between the electron source and the strip-like electrode element as Lkg(mm), and an aperture diameter of the electron passing apertures as &phgr;G(mm),
    Type: Application
    Filed: November 5, 2003
    Publication date: May 13, 2004
    Inventors: Tomoki Nakamura, Yuuichi Kijima, Yoshiyuki Kaneko, Shigemi Hirasawa
  • Publication number: 20040085269
    Abstract: An emissive display having pixels delimited by a plurality of scan lines and a plurality of signal lines intersecting with each other. Each pixel includes a memory circuit having at least a first inverter circuit including an electroluminescent device and including a display control circuit connecting in series a main circuit of at least one first transistor. The memory circuit stores display information of the pixel according to a conduction state or a non-conduction state of the main circuit of the first inverter, and controls an on state and an off state of the electroluminescent device.
    Type: Application
    Filed: October 28, 2003
    Publication date: May 6, 2004
    Inventors: Yoshiro Mikami, Takayuki Ouchi, Yoshiyuki Kaneko, Toshihiro Sato
  • Patent number: 6724377
    Abstract: A practical-purpose structure of an active-matrix display device digitally driven with vertical scanning being multiplexed includes a vertical driver having sequential circuits and logic circuits provided on a bit-by-bit basis and arranged for adding sequentially products of outputs of the sequential circuit/logic circuit and a control signal for dividing a horizontal scanning period, and a horizontal driver having line latches provided on a bit-by-bit basis and arranged for adding sequentially products of outputs of the line latches and the control signal for dividing the horizontal scanning period. Enhanced luminance of display, manufacturing at low cost and high image quality can be realized with a reasonable wiring density.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: April 20, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Takayuki Ouchi, Yoshiro Mikami, Yoshiyuki Kaneko, Toshihiro Satou, Mitsuhisa Fujita
  • Publication number: 20040056582
    Abstract: To provide a display device having the long lifetime and the high reliability by preventing the generation of a spark or a dark current between terminals of cathode lines and an anode, a shielding member is arranged between the terminals of the cathode lines and the anode so as to ensure shielding between the terminals and the anode.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 25, 2004
    Inventors: Tomoki Nakamura, Yuuichi Kijima, Yoshiyuki Kaneko, Toshifumi Ozaki, Shigemi Hirasawa