Patents Examined by Matthew J. Gerike
  • Patent number: 6005345
    Abstract: A plasma display panel is disclosed including a transparent insulating substrate having a plurality of striped grooves, whose portions between the grooves serve as barrier ribs; vertical transparent electrodes each of which is formed in each groove; a fluorescent layer formed on the vertical transparent electrode; horizontal electrodes in strip arrangement having a predetermined distance between one another, and being perpendicular to the transparent vertical electrodes; and supporting means which are respectively located on the edge portions of the substrate for supporting the horizontal electrodes.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: December 21, 1999
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Nak-Heon Choi, Do-Young Ok, Jin-Man Kim, Deuk-Soo Pyun
  • Patent number: 6005334
    Abstract: An electron-emitting apparatus is constituted by an electron-emitting device having an electroconductive film including electron-emitting portions, and an electrode for attracting electrons. An electrically insulated elongated region is formed in the electroconductive film to divide the film into a higher potential side and a lower potential side. The insulated region has a substantially periodical shape formed of portions projecting to the higher potential side and portions projecting to the lower potential side. Continuous electron-emitting portions are present at at least part of the portion projecting to the higher potential side in one period of the insulated region.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: December 21, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Mitome, Masahiro Okuda, Toshiaki Aiba, Shigeki Matsutani, Kazuhiro Takada, Akira Asai
  • Patent number: 6002203
    Abstract: A cathode ray tube includes a vacuum envelope having a substantially rectangular panel, a cylindrical neck, and a funnel connecting the panel and the neck. A phosphor screen arranged on the inner surface of the panel generates luminescence upon impingement of electron beams, which are generated by an electron gun assembly disposed in the neck. In order to create a image visible through the panel, a deflection yoke is mounted on the outer surface of the funnel to generate a magnetic field in the funnel, deflect the electron beams, and thereby scan the phosphor screen. According to the present invention, the portion of the funnel over which the deflection yoke is mounted is formed such that the power required to generate a deflection field capable of scanning substantially the entire phosphor screen may be reduced.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: December 14, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Yokota, Yuuichi Sano, Eiji Kamohara, Tadahiro Kojima
  • Patent number: 5998927
    Abstract: The formation of leachable mercury upon disposal or during TCLP testing of mercury vapor discharge lamps is substantially prevented by maintaining the amount of elemental iron at a level which is at least about 100 to about 1000 milligrams per kilogram of the total weight of lamp material.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: December 7, 1999
    Assignee: General Electric Company
    Inventors: Donald Franklin Foust, Deborah Ann Haitko, David Key Dietrich
  • Patent number: 5990619
    Abstract: A plasma addressed liquid crystal display system (10) includes improved electrode structures (90, 100, 130) that are nonuniform parallel to their surfaces and may also be nonuniform perpendicular to their major surfaces. The nonuniformities include surface nonuniformities (92, 94), bulk nonuniformities (108, 110, 112, 112), and geometric nonuniformities (132, 134). Electrodes having such nonuniformities provide localized sites of preferential and nonpreferential surface and bulk properties of the electrodes, which, in turn, provide improved and locally tailored plasma discharge characteristics. PALC displays having the nonuniform electrodes have improved quality because of reduced firing voltages in one plasma channel region compared to another, reduced sputtering damage, reduced total current between electrodes, decreased discharge initiation time, and decreased ionized gas decay time.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: November 23, 1999
    Assignee: Tektronix, Inc.
    Inventors: Kevin J. Ilcisin, Paul C. Martin, Thomas S. Buzak
  • Patent number: 5990615
    Abstract: In an organic EL element having a cap sealing structure, a cathode is coated with an insulative protecting layer of a fluorine system polymer or an oxide insulative material and an inert medium is filled within the cap sealing structure.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: November 23, 1999
    Assignee: NEC Corporation
    Inventors: Yoshikazu Sakaguchi, Masako Kimura
  • Patent number: 5990618
    Abstract: To increase heat dissipation from a plasma display panel, a heat sinking unit 2 bonded to a curved back surface 11 of a panel unit includes a large number of fin blocks 21 arranged spaced apart from each other by a prescribed distance and a flexible thin-wall portion 22, and a joining section 221, which consists of fin anchoring portions 212 and thin-wall portions 22, is capable of being bent between the fin blocks 21, thus allowing the heat sinking unit 2 to conform to the curvature of the panel unit back surface 11.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: November 23, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Makoto Morita, Takashi Ichiyanagi, Junji Ikeda, Naomi Nishiki, Takao Inoue, Daido Komyoji, Tsutomu Kawashima
  • Patent number: 5986401
    Abstract: A high contrast organic light emitting device (OLED) display utilizing a transparent (TOLED) display structure with a low-reflectance absorber arranged behind the display. The TOLED display allows substantially all light incident on the display to pass through the display and to be absorbed by the low-reflectance absorber With the amount of light reflected by the display thus substantially reduced, the contrast of images displayed by the display is thus improved.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: November 16, 1999
    Assignees: The Trustee of Princeton University, The University of Southern California
    Inventors: Mark E. Thompson, Stephen R. Forrest, Paul Burrows
  • Patent number: 5977695
    Abstract: To provide a spark plug having an improved consumption resistance and producible through a simple process, a spark plug comprises a noble metal chip composed of an Ir alloy material and disposed on at least one of the tip of the center electrode and the facing portion of the ground electrode, the Ir alloy material is composed of Ir and a metal having a higher oxidation resistance than Ir and forming solid solution with Ir at all proportions to prevent oxidation evaporation of Ir, and the chip is produced by elongating an ingot of the Ir alloy material through hot forging to a bar having a fine fiber texture to prevent surface cracking during elongation, followed by hot rolling, hot wire drawing and cutting to the chip length.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: November 2, 1999
    Assignee: Denso Corporation
    Inventors: Hironori Osamura, Nobuo Abe
  • Patent number: 5977709
    Abstract: A mercury lamp of the short arc type with a high degree of maintenance of irradiance is achieved in a mercury lamp of the short arc type by the cathode containing thorium oxide and having a tungsten carbide layer on its surface except at tip end area, by at least one of the cathode or anode being provided with metallic tantalum, and by the condition 1.56.ltoreq.VT/SC being satisfied, where SC is the area of the tungsten carbide layer (cm.sup.2) and VT is the volume of the metallic tantalum (mm.sup.3). Alternatively, a high degree of maintenance of irradiance can be achieved in a mercury lamp of the short arc type by the condition 0.043.ltoreq.VT/VW being satisfied, where VW is the volume of the anode (cm.sup.3) and VT is the volume of the tantalum in the lamp bulb (mm.sup.3).
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: November 2, 1999
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Yukio Yasuda, Masanori Sugihara
  • Patent number: 5977701
    Abstract: An object of the present invention is to provide a CRT for improving brightness without changing a conventional electron gun, a light emitting layer, etc.A color cathode ray tube according to the present invention is characterized in that both or one of a panel glass 3 and a safety glass 1 used on a front face of the color cathode ray tube uses glass having characteristics in which spectroscopic transmittance to an electromagnetic wave near 580 to 700 nm in wavelength is relatively higher than spectroscopic transmittances to electromagnetic waves near 430 nm and 530 nm in wavelength.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: November 2, 1999
    Assignee: Sony Corporation
    Inventors: Atsushi Sakata, Tomohisa Uba, Shigeo Ando, Masaru Nagashima
  • Patent number: 5969473
    Abstract: A two-part field emission structure, and a method for making such a structure, is described. A substrate is provided having a first conductive layer thereon, a first insulating layer over the first conductive layer, a second conductive layer over the first insulating layer, and an opening formed in the first insulating and second conductive layers. A sacrificial layer is formed over the second conductive layer. A bottom portion of the field emitter structure is formed in the opening, by vertical deposition of a conductive material, whereby a third conductive layer, having a collimated channel over the bottom portion, is formed over the sacrificial layer. The formation of the field emitter structure is completed by vertical deposition of a tip material on to the top of the bottom portion of the field emitter structure, whereby a top conductive layer is formed over the third conductive layer. Lastly, the sacrificial layer, the third conductive layer, and the top conductive layer are removed.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: October 19, 1999
    Assignee: Industrial Technology Research Institute
    Inventors: Jammy Chin-Ming Huang, David Nan-Chou Liu
  • Patent number: 5965981
    Abstract: A transparent thin-film EL display apparatus has a transparent thin-film EL element formed on a glass substrate. A rear substrate consisting of photochromic glass and the glass substrate on which the EL element is formed are disposed facing each other with the EL element located in between. A light-transmitting insulation material is inserted in a space between the two substrates and hermetically sealed. When the display on the EL element becomes hard to see due to light entering from the rear of the display apparatus, the photochromic glass reacts in response to the light and darkens the rear of the EL element, thereby blocking the light.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: October 12, 1999
    Assignee: Nippondenso Co., LTD
    Inventors: Kazuhiro Inoguchi, Tomoya Uchida, Nobuei Ito, Tadashi Hattori
  • Patent number: 5965978
    Abstract: A field emission type display device including a container formed of an anode substrate, a cathode substrate and side wall portions, and a cover member mounted at the container to form a getter room. An anode lead is securely fixed on the cover member so as to be derived outward from the outer wall confronting the anode substrate. Two wires are attached to the front end of the anode lead. When the cover member is mounted on the container, the curved portions of the two wires is pressed against the anode terminal formed on the anode substrate extended to the end of the anode substrate to secure electric conduction between the anode terminal and the anode lead. This structure provides easy-to-use anode leads which can be simply derived as electrodes.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: October 12, 1999
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Takao Kishino, Haruhisa Hirakawa, Kenichi Furumata
  • Patent number: 5962975
    Abstract: A flat-panel gas discharge display operable with either alternating or direct current includes magnetic elements within certain of the electrodes which define the discharge cell. The display may be free of implosive forces when operated at least at substantially atmospheric pressure. The display comprises a first set of conductors disposed on a transparent substrate and a second set crossing over the first set at a distance therefrom. The second set of conductors includes a magnetic core or layer whereby the second set of conductors is magnetically attracted to an array of contact points on the substrate. An array of crosspoints is formed at each location where a conductor of the second set crosses over a conductor of the first set. A gas is contained in the space between the first and second sets of conductors at each crosspoint. The gas will undergo light emissive discharge when a voltage greater than or equal to the Paschen minimum firing voltage is applied at a crosspoint.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: October 5, 1999
    Inventor: Martin P. Lepselter
  • Patent number: 5959400
    Abstract: The present invention relates to an electron tube having a configuration which can maintain its operating stability for a long period of time. The electron tube comprises, at least, a field emitter which is made of diamond or a material mainly composed of diamond and has a surface terminated with hydrogen, and a sealed envelope for accommodating the diamond field emitter. Due to the hydrogen termination, the electron affinity of the diamond field emitter is set to a negative state. Also, hydrogen is enclosed within the sealed envelope. Due to this configuration, the hydrogen-terminated state of the diamond field emitter surface is stabilized, and the electron affinity of the diamond emitter is restrained from changing for a long period of time.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: September 28, 1999
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Minoru Niigaki, Toru Hirohata, Hirofumi Kan, Masami Yamada
  • Patent number: 5959392
    Abstract: A cathode ray tube display comprises a cathode ray tube (10) having a screen (11) connected to a neck portion (12) via a bell portion (13). Cancellation coil means (160,160') are arranged to receive a signal based on a scanning signal for the cathode ray tube and arranged to reduce stray magnetic fields radiating from the display. The cancellation coil means comprises a first cancellation coil (160) and a second cancellation coil (160') located on each of opposite sides of the cathode ray tube. The first cancellation coil (160) are located adjacent the bell portion and the second cancellation coil (160') being located adjacent the neck portion. The first and second cancellation coils each being contained in a plane substantially perpendicular to the screen of the cathode ray tube.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: September 28, 1999
    Assignee: International Business Machines Corporation
    Inventor: John Beeteson
  • Patent number: 5955839
    Abstract: An incandescent microcavity lightsource 30 has an incandescent active region 13 capable of spontaneous light emission when heated. The incandescent microcavity lightsource 30 controls the spontaneous light emissions from said active region 13.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: September 21, 1999
    Assignee: Quantum Vision, Inc.
    Inventors: Steven M. Jaffe, Michieal L. Jones, Jeffrey S. Thayer, Brian L. Olmsted, Hergen Eilers
  • Patent number: 5955829
    Abstract: Electron gun with band-shaped beams that includes a vacuum chamber extend in a longitudinal direction, a beam window running in the longitudinal direction along the vacuum chamber, and a cathode control-electrode system positioned within the vacuum chamber in the longitudinal direction. The cathode control-electrode system includes at least one substantially straight cathode positioned substantially parallel to a longitudinal axis of the cathode control-electrode system and the at least one substantially straight cathode has bulges formed at defined distances. The bulges are shaped to produce a substantially homogeneous current density distribution along the at least one substantially straight cathode and support units are located in the cathode control-electrode system to correspond with the bulges. The bulges are removably couplable to the support units.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: September 21, 1999
    Assignee: Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.
    Inventors: Ulf Seyfert, Olaf Roder, Siegfried Schiller, Siegfried Panzer, Robert Mohs
  • Patent number: 5952783
    Abstract: A surface-discharge type PDP includes plural main electrode pairs formed of first and second sustain electrodes arranged on a first substrate. Each pair extends along a line direction, and the first and second sustain electrodes are in parallel and adjacent to each other. Plural address electrodes arranged on a second substrate opposing the first substrate via a discharge space, each extending along a row direction, a matrix corresponding to a screen to be displayed is formed with the main electrodes and address electrodes, the address electrodes are othogonal to the main electrodes, each of the address electrode is divided into, for example two partial address electrodes separated from each other by a border line located between adjacent main electrode pairs, whereby the screen is divided into two partial screens, wherein a first clearance between the partial address electrodes is substantially larger than a second clearance between main electrode pair adjacent across the border line.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: September 14, 1999
    Assignee: Fujitsu Limited
    Inventors: Seiki Kuroki, Nguen Thanh Nhan