Patents Examined by Kenneth J. Ramsey
  • Patent number: 6761608
    Abstract: A PDP does not suffer from dielectric breakdown even though a dielectric layer is thin, with the problems of conventional PDPs, such as cracks appearing in the glass substrates during the production of the PDP being avoided. To do so, the surface of silver electrodes of the PDP is coated with a 0.1-10 &mgr;m layer of a metallic oxide, on whose surface OH groups exist, such as ZnO, ZrO2, MgO, TiO2, Al2O3, and Cr2O3. The metallic oxide layer is then coated with the dielectric layer. It is preferable to form the metallic oxide layer with the CVD method. The surface of a metallic electrode can be coated with a metallic oxide, which is then coated with a dielectric layer. The dielectric layer can be made of a metallic oxide with a vacuum process method or the plasma thermal spraying method. The dielectric layer formed on electrodes with the CVD method is remarkably thin and flawless.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 13, 2004
    Assignee: Matsushita Electric Industrial Co. Ltd.
    Inventors: Hiroyoshi Tanaka, Ryuichi Murai, Hideaki Yasui, Yoshiki Sasaki, Akira Shiokawa, Masatoshi Kudoh, Koichi Kotera, Masaki Aoki, Mitsuhiro Ohtani, Shigeo Suzuki, Kinzou Nonomura
  • Patent number: 6761605
    Abstract: The object of this invention is to provide a plasma display panel in which an aging process essential to the manufacturing process generates minimal phosphor deterioration, enabling a relatively high luminous efficiency and high quality color production to be produced. To achieve this object, the aging process takes place while gas generated inside the panel is evacuated. Alternatively, after completion of the aging process, the phosphor of the whole panel is heated to restore heat deterioration.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: July 13, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki
  • Patent number: 6761607
    Abstract: An apparatus is provided for producing a substrate for PDP, which can easily reduce ununiformity of a dielectric layer and defects of ribs. The apparatus is so constituted that it comprises: a table for the plate, a rib precursor supplying portion for providing a precusor of the ribs on the plate, a pliable mold having at least groove portions provided in parallel with each other at a fixed distance, which is disposed on the precursor of the ribs provided on the plate, a mold pressing portion for applying a pressure to the mold, thereby to contact the mold closely with the plate via the precursor of the ribs, and a driving portion for moving the mold pressing portion along the groove portions of the mold.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: July 13, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Hiroshi Kikuchi, Chikafumi Yokoyama, Akira Yoda, Takaki Sugimoto, Toshihiro Suwa
  • Patent number: 6758712
    Abstract: The wirings on an electron source substrate are formed to intersect with each other in a matrix so as to address the electron emission devices on the substrate. First and second wirings intersect with each other on a crossing point. As such a crossing point, an insulating layer is placed between the first and second wirings. To ensure insulation, a plurality of insulating layers are laminated. According to the present invention, a wiring pattern is provided on the substrate with a conductive paste and baking the wiring pattern of the conductive paste to form the first wiring. Subsequently part of the first wiring is coated at the crossing point with an insulating paste and baking the insulating paste to form a first insulating layer. The coating thickness of the insulating layer formed adjacent to sidewalls of the crossing point is substanially equal to the height of the first wiring.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: July 6, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinsaku Kubo, Kazuya Ishiwata, Yoshimi Uda, Yasuyuki Watanabe, Hiroaki Toshima
  • Patent number: 6758713
    Abstract: A package method for an organic electro-luminescent display, which spreads a certain amount of ultra-violet curing resin or thermal curing resin on a lamination plate or a substrate, to obtain a global spreading effect by forming a trench at an of the lamination plate. The lamination plate with the trench at the edge thereon is provided by a lamination plate supply system. The lamination plate is aligned and laminated with the substrate, and ultra-violet light radiation or thermal process is performed for curing the ultra-violet or thermal curing resin, respectively. In the alignment and lamination process, the space between the lamination plate and the substrate is controlled by adjusting lamination pressure and movement of the lamination machine; thereby, the exceeding ultra-violet or thermal curing resin flows into the trench at the edge of the lamination plate, and dimension of the package can thus be controlled.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: July 6, 2004
    Assignee: RiTdisplay Corporation
    Inventors: Mao-Kuo Wei, Yung-Wei Lai
  • Patent number: 6755709
    Abstract: In a method of fabricating an electron-emitting device, an activation step is performed in shorter time. The method forms a deposit of carbon or carbon compound on a precursory structure which becomes an electron-emitting region in an electron-emitting device made on a substrate and comprises a first step for depositing carbon or carbon compound in a gas atmosphere which includes a carbon compound of a first molecular weight, and subsequently a second step for depositing carbon or carbon compound in a gas atmosphere which includes a carbon compound of a second molecular weight smaller than the first molecular weight.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: June 29, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Jindai, Mineto Yagyu
  • Patent number: 6752676
    Abstract: A method for producing an electron-emitting device having an electroconductive film with an electron-emitting region extending between plural electrodes, includes a step of forming the electron-emitting region in the electroconductive film, including a step of heating the electroconductive film, and a step of energizing the electroconductive film in an atmosphere in which a gas for promoting cohesion of the electroconductive film exists.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: June 22, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Yamashita, Hisaaki Kawade, Toshikazu Ohnishi, Tatsuya Iwasaki, Takeo Ono
  • Patent number: 6753650
    Abstract: A method for producing an electric lamp having a vitreous lamp bulb and a foil of molybdenum or a doped molybdenum alloy which is pinched in the lamp bulb includes post-treating the unfinished foil such that substantially non-contiguous, insular regions of material agglomerates are formed. The material agglomerates are formed of molybdenum, molybdenum alloys, titanium, silicon, an oxide, a mixed oxide and/or an oxidic compound, with a vapor pressure of in each case less than 10 mbar at 2000° C. The substantially non-contiguous, insular regions are formed on at least 5 percent and at most 60 percent of the area of the foil surface. In this way, the adhesive strength between the foil and the glass and therefore also the service life of the lamp are significantly improved.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: June 22, 2004
    Assignee: Plansee Aktiengesellschaft
    Inventors: Gerhard Leichtfried, Bernhard Retter, Manfred Sulik
  • Patent number: 6752677
    Abstract: A method for producing a spark plug, the spark plug comprising a center electrode, a metal shell and an alumina ceramic insulator disposed between the center electrode and the metal shell, wherein at least part of the surface of the insulator is covered with a glaze layer comprising oxides, the method comprising the steps of: preparing a coated glaze powder so that a surface of each particle of a glaze powder is covered by an elution-suppressing coating layer, the elution-suppressing coating layer suppressing an elution of water soluble component that is contained in each particle of the glaze powder; preparing a glaze slurry by suspending the glaze powder in a water solvent; applying the glaze slurry to a surface of the insulator so as to form a glaze powder-deposited layer; and baking the glaze powder-deposited layer to the surface of the insulator to form the glaze layer by heating the glaze powder-deposited layer.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: June 22, 2004
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Kenichi Nishikawa, Makoto Sugimoto
  • Patent number: 6749477
    Abstract: A forming method of spacers in a flat panel display is provided. The method includes the steps of preparing a plurality of spacers in a predetermined shape, preparing a substrate on which the spacers are to be attached in the flat panel display, applying a photosensitive adhesive material on an upper surface of the substrate to a predetermined thickness, aligning the spacers on the substrate to attach the spacers by using the photosensitive adhesive material, radiating light onto the substrate from above the substrate to expose portions of the photosensitive adhesive material without the spacers, and removing the exposed portions of the photosensitive adhesive material. Therefore, the spacers are fixed on the substrate by the photosensitive adhesive material located under the spacers. According to the provided method of forming spacers, the spacers are fixed on the substrate by a mounting process using a jig, a temporary exposing process, and a developing process.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: June 15, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyung-won Min, Seung-nam Cha
  • Patent number: 6749478
    Abstract: A method of making an electric lamp having a gas filled outer jacket wherein the space enveloped by the jacket may be flushed and filled with the desired fill gas without the use of a mechanical evacuation system including an exhaust pump. The space may be flushed and filled to obtain a controlled atmosphere within the space by inserting a gas dispensing probe into the space to displace the uncontrolled atmosphere with the fill gas. The final pressure of the fill gas which is sealed within the space may be controlled by controlling the temperature of the fill gas during the flush/fill procedure until the outer jacket is sealed.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: June 15, 2004
    Assignee: Advance Lighting Technologies, Inc.
    Inventors: Abbas Lamouri, David Earl Bassett
  • Patent number: 6746295
    Abstract: The light source has an LED, preferably produced for the surface-mounting technique, embedded in a transparent material filling. A converter substance is integrated in the filling for the at least partial wavelength conversion of the light emitted by the LED. A lens is glued onto the transparent material filling. The material filling has a convex surface and the lens has a concave underside entering into a form fit with the convex surface of the material filling.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: June 8, 2004
    Assignee: Osram-Opto Semiconductors GmbH & Co. oHG
    Inventor: Jörg-Erich Sorg
  • Patent number: 6743066
    Abstract: In an electron source manufacturing method and apparatus, a plurality of electron-emitting devices are commonly connected to a first wiring and to a plurality of second wirings, respectively. A voltage V1 is applied to the plurality of devices connected to the first wiring by the difference between potentials applied to the first wiring and the plurality of second wirings.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: June 1, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahiro Oguchi, Noritake Suzuki
  • Patent number: 6743067
    Abstract: Organic light emitting devices includes a light emission region between a cathode and anode. The light emission region comprises an organic light emitting material. The organic light emitting devices are formed by annealing as-fabricated devices. The annealing improves the performance of the as-fabricated devices, by decreasing their operating voltage and increasing their energy conversion efficiency. Multiple organic light emitting devices can be annealed to make the properties of the devices more uniform relative to each other.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: June 1, 2004
    Assignee: Xerox Corporation
    Inventors: Hany M. Aziz, Zoran D. Popovic, Nan-Xing Hu
  • Patent number: 6739932
    Abstract: Embossed microstructures within a substrate are used to create narrow and deep holes within that substrate. A carbon nanotube solution or mixture is then deposited over this substrate with the embossed holes. Shaking or vibrating the substrate will then cause the carbon nanotubes to fall into each of the holes in such a way that all of the nanotubes within a hole will be substantially parallel to the long axis of the hole. This structure can then be combined with a gate electrode and an anode to create a field emission display device.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: May 25, 2004
    Assignee: SI Diamond Technology, Inc.
    Inventors: Zvi Yaniv, Richard Fink
  • Patent number: 6739927
    Abstract: A position of an inner surface of a panel (10) is measured with the panel being held, and a position of a main surface of a color selection electrode (30) is measured with a color selection electrode frame (40) being held, so that the measured positional data provide a measured value corresponding to a spacing between the panel inner surface and the main surface of the color selection electrode. In a state that the engaging holes of the supporting members are engaged with dummy pins (200) arranged in a predetermined positional relationship to the panel pins (20) on the condition that the panel is held, the position of the main surface of the color selection electrode is adjusted with respect to engaging holes on the basis of the predetermined positional relationship and the measured value, and supporting members are fixed by welding to the color selection electrode frame.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: May 25, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Tsuruha, Kenichi Satoh, Kazuya Aoyama, Osamu Hirota
  • Patent number: 6741025
    Abstract: A field electron emission material is formed by coating a substrate (221, 230) having an electrically conductive surface with a plurality of electrically conductive particles (223, 231). Each particle has a layer of electrically insulating material (222, 232) disposed either in a first location between the conductive surface of the substrate (221) and the particle (223), or in a second location between the particle (231) and the environment (237) in which the field electron emission material is disposed, but not in both of such first and second locations, so that at least some of the particles (223, 231) form electron emission sites at such first or second locations. A number of field emission devices are disclosed, utilizing such electron emission material.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: May 25, 2004
    Assignee: Printable Field Emitters Limited
    Inventors: Richard Allan Tuck, Hugh Edward Bishop
  • Patent number: 6739931
    Abstract: In an EL element having an anode, an insulating film (bump) formed on the anode, and an EL film and a cathode formed on the insulating film, each of a bottom end portion and a top end portion of the insulating film is formed so as to have a curved surface. The taper angle of a central portion of the insulating film is set within the range from 35° to 70°, thereby preventing the gradient of the film forming surface on which the EL film and the cathode are to be formed from being abruptly changed. On the thus-formed film forming surface, the EL film and the cathode can be formed so as to be uniform in thickness, so that occurrence of discontinuity in each of EL film and the cathode is prevented.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: May 25, 2004
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hideomi Suzawa, Ichiro Uehara
  • Patent number: 6733354
    Abstract: The disclosed method for forming a field emission display includes forming a cathode and an anode, forming a plurality of photoresist posts over the cathode, and coating the posts with a coating material. The coating material forms sidewalls around the posts. The photoresist posts may then be removed from within the sidewalls. The anode may then be fitted onto the sidewalls so that the sidewalls function as spacers in the field emission display.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: May 11, 2004
    Assignee: Micron Technology, Inc.
    Inventors: David A. Cathey, James J. Alwan
  • Patent number: RE38536
    Abstract: A spark plug has at least two electrodes having ends facing toward one another so as to produce an electrical discharge when an electrical potential is applied to said electrodes, and a layer of an erosion-resistant material applied on each of said electrodes by electro-spark deposition so the lifetime of the spark plug comparing to existing is substantially increased.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: June 22, 2004
    Inventor: Alexander Reznik