Electrode And Shield Structures Patents (Class 313/326)
  • Patent number: 7303696
    Abstract: A light-emitting material includes a matrix section 12 and light-emitting sections 11 dispersed and buried in the matrix section. The matrix section 12 comprises a first material and the light-emitting sections comprise a second material showing a eutectic relationship with the first material.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: December 4, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tohru Den, Tomoyuki Oika
  • Patent number: 7268474
    Abstract: A nickel alloy has 10-20 weight percent of chromium, and 1-4 weight percent of an element selected from the group consisting of aluminum, silicium and both, and can be used in an electrode, for example in an ignition device.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: September 11, 2007
    Assignee: Robert Bosch GmbH
    Inventor: Klaus Hrastnik
  • Patent number: 7250712
    Abstract: In one aspect, a microelectrode comprising an upper surface, two walls, and a polymer core is described, wherein each of the two walls forms an angle with a lower surface, and the upper surface and each of the two walls comprises a metal thin film in contact with the polymer core. The lower surface, however, lacks a continuous metal thin film. In another aspect, a microelectrode comprising a metal thin film is described in which the metal thin film has a thickness and a plane bisects the thickness. The plane forms an angle with a lower surface that lacks a contiuous metal thin film. The metal thin film is in contact with a supporting polymer having an upper surface that also lacks a continuous metal thin film.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: July 31, 2007
    Assignee: Lumera Corporation
    Inventors: Raluca Dinu, Jeffrey K. Kressbach
  • Patent number: 7154216
    Abstract: In order to ensure hermeticity of a hermetic container and to suppress occurrence of electrical leakage, a display device is provided with a faceplate including an anode to be supplied with an externally-supplied electric potential, a rear plate arranged facing the faceplate at a predetermined spacing therefrom, a metal pin for supplying the electric potential to the anode from outside of the rear plate through a penetration hole in the rear plate, wherein the penetration hole includes the metal pin by insertion. The metal pin includes an axis portion disposed in the penetration hole and a flange portion which is integral with this axis portion and which is located adjacent an opening end of the penetration hole. The flange portion is joined to the rear plate for hermetically sealing the penetration hole.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: December 26, 2006
    Assignee: Canon Kanushiki Kaisha
    Inventor: Kinya Kamiguchi
  • Patent number: 7094366
    Abstract: A resin bonded graphite material which is especially suitable for use as an electric contact, and a method for the production of this resin bonded graphite material. According to the invention, the resin-bonded graphite material if formed from a mixture of carbon black containing electro-graphite with a unburned graphite content of RG wherein RG?30 percent by weight, electro-graphite free of carbon black as well as binding agents. The material has a specific electrical resistance Wspec wherein Wspec?3500 ??m, and use of the resin bonded graphite material as an electrical contact makes possible substantial exclusion of radio interference.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: August 22, 2006
    Assignee: Schunk Kohlenstofftechnik GmbH
    Inventors: Bettina Hübner, Rainer Sperling, Klaus-Georg Tontsch
  • Patent number: 7081623
    Abstract: An apparatus for an ion trap includes a semiconductor or dielectric wafer with front and back surfaces, a sequence of alternating conductive and dielectric layers formed over said front surface, and a bottom conductive layer. The sequence includes top and middle conductive layers, wherein the middle conductive layer is closer to the wafer than the top conductive layer. The middle conductive layer includes a substantially right cylindrical cavity that crosses a width of the middle conductive layer. The top and bottom conductive layers cap respective first and second ends of the cavity. The top conductive layer includes a hole that forms a first access port to the cavity. The wafer includes via through the width of the wafer. The via provides another access to the cavity via the back surface of the wafer. The wafer is substantially thicker than the sequence of layers.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: July 25, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Chien-Shing Pai, Stanley Pau
  • Patent number: 7057333
    Abstract: The method of the invention for extracting electrons in a vacuum consists in: making a cathode presenting at least one junction (9) between a metal (7) acting as an electron reservoir and an n-type semiconductor (8) possessing a surface potential barrier with a height of a few tenths of an electron volt, and presenting thickness lying in the range 1 nm to 20 nm; injecting electrons through the metal/semiconductor junction (9) to create a space charge in the semiconductor (8) sufficient to lower the surface potential barrier of the semiconductor to a value that is less than or equal to 1 eV relative to the Fermi level of the metal (7); and using the bias source creating an electric field in the vacuum to control the height of the surface potential barrier (Vp) of the n-type semiconductor in order to control the emission of the electron flux towards the anode.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: June 6, 2006
    Assignee: Universite Claude Bernard Lyon I
    Inventors: Binh Vu Thien, Jean-Pierre Dupin, Paul Thevenard
  • Patent number: 7012370
    Abstract: A plurality of discharge electrodes having transparent electrodes connected to bus electrodes are arranged on the inner side of a front substrate. Alternatively, discharge electrodes having transparent electrodes and capable of discharging between their respective neighboring electrodes on both sides are arranged on the inner side of the front substrate. The front substrate is provided on the side of the display surface where discharge-generated light radiates out to the exterior. Shielding parts for shielding incident light from the exterior are formed on the transparent electrodes, or along the front substrate. Accordingly, the shielding parts reduce the surface reflection to improve the bright room contrast ratio. Forming the shielding parts with the same material as that of the bus electrodes prevents fabrication processes from becoming complicated. The areas of the shielding parts can be varied with the luminescent colors of cells, to change the luminescent brightness by the cell.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: March 14, 2006
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Yoshikazu Kanazawa, Shigeharu Asao
  • Patent number: 7005784
    Abstract: It is an object of the invention to prevent not only cracking but also blocking of an electrode layer 20 and an electrically insulating layer 30, particularly the electrically insulating layer 30, which is formed on a base film 10. An electrode apparatus comprises a base film 10 for defining a recess 50 at the inner periphery of a bending part 500, and an electrode layer 20 and an electrically insulating layer 30 which are pattern formed on the base film 10. The electrode layer 20 crosses the bending part 500 from the inside of the recess 50 to the outside. The electrically insulating layer 30 covers the upper part of the electrode layer 20 in the vicinity of the bending part 500. A resin composition obtained by admixing a low Tg resin having a glass transition temperature equal to 25 degrees C. or lower and a high Tg resin having a higher glass transition temperature (for example, 40 degrees C. or higher) than that of the low Tg resin is used as a dielectric of the electrically insulating layer 30.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: February 28, 2006
    Assignees: Kyodo Printing Co., Ltd., Hisamitsu Pharmaceutical Co., Inc.
    Inventors: Tatsuya Ogawa, Saori Takahashi, Yasushi Fuchita, Kenji Mori, Naruhito Higo
  • Patent number: 7005782
    Abstract: A charged particle apparatus, with multiple electrically conducting semispheric grid electrodes, the grid electrodes mounted in a dielectric mounting ring, with hidden areas or regions to maintain electrical isolation between the grid electrodes as sputter deposits form on the grid electrodes and mounting ring. The grid electrodes are mounted to the mounting ring with slots and fastening pins that allow sliding thermal expansion and contraction between the grid electrodes and mounting ring while substantially maintaining alignment of grid openings and spacing between the grid electrodes. Asymmetric fastening pins facilitate the sliding thermal expansion while restraining the grid electrodes. Electrical contactors supply and maintain electrical potentials of the grid electrodes with spring loaded sliding contacts, without substantially affecting the thermal characteristics of the grid electrodes.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: February 28, 2006
    Assignee: VEECO Instruments, Inc.
    Inventors: Viktor Kanarov, Alan V. Hayes, Rustam Yevtukhov, Daniel Yakovlevitch
  • Patent number: 6967434
    Abstract: In order to ensure hermeticity of a hermetic container and to suppress occurrence of electrical leakage, a display device is provided with a faceplate including an anode to be supplied with an externally-supplied electric potential, a rear plate arranged facing the faceplate at a predetermined spacing therefrom, a metal pin for supplying the electric potential to the anode from outside of the rear plate through a penetration hole in the rear plate, wherein the penetration hole includes the metal pin by insertion. The metal pin includes an axis portion disposed in the penetration hole and a flange portion which is integral with this axis portion and which is located adjacent an opening end of the penetration hole. The flange portion is joined to the rear plate for hermetically sealing the penetration hole.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: November 22, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kinya Kamiguchi
  • Patent number: 6917157
    Abstract: Disclosed is an electrode for an electron source, a method for producing the same, and an electronic tube using the same which provide a decreased thickness of an electron emitting source, and an improved current distribution percentage. The electronic tube comprises a substrate, an electron emitting source area formed on the substrate, and a shield area around the electron emitting area. The shield area is formed of a material that does not produce an electron emitting source, when the electron emitting source is produced by a dry method. As a result, if a space between an electron drawing electrode and the electrode for the electron source is narrow, the percentage of anode current increases in the total current, thereby improving the current distribution percentage.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: July 12, 2005
    Assignee: Noritake Co., Ltd.
    Inventors: Tomotaka Ezaki, Sashiro Uemura, Junko Yotani, Hiromu Yamada, Takeshi Nagasako, Hiroyuki Kurachi, Kazunori Tatsuda, Yukiharu Seko, Tsuyoshi Maesoba
  • Patent number: 6903508
    Abstract: A light source, in particular incandescent lamp, with a bulb (1), a filament (2) arranged in the bulb (1), and a heating device (3) for the filament (2), the filament (2) emitting both visible light and heat radiation, is designed and constructed with respect to a high conversion efficiency between an electrical power input and emitted light output such that the filament (2) includes a flat section (4). A light source of this type may be produced by a method, wherein initially a filament (2) of a sintered metal powder is provided. Subsequently, the filament (2) is exposed to an atmosphere of carbon dioxide or of carbon dioxide and inert gas for forming a metal carbide. Finally, the filament (2) is sealed into the bulb (1).
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: June 7, 2005
    Assignee: IP2H AG
    Inventor: Jörg Arnold
  • Patent number: 6876136
    Abstract: An electron emission element according to the present invention comprises a substrate, and a plurality of protrusions composed of diamond and protruding from the substrate. Each protrusion includes a columnar portion, the side face of which forms an inclination of approximately 90° relative to the surface of the substrate, and a tip portion, which is located on the columnar portion having a spicular end. A conductive layer is formed on the upper part of each columnar portion, and a cathode electrode film, which is electrically connected to the conductive layer, is formed on the side face of the columnar portion.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: April 5, 2005
    Assignees: Sumitomo Electric Industries, Ltd., Japan Fine Ceramics Center
    Inventors: Yoshiki Nishibayashi, Yutaka Ando, Takahiro Imai
  • Patent number: 6861791
    Abstract: An electron source is proposed where a field emitter is formed by a whisker grown epitaxially on a substrate. A ballast resistor and an active area are placed in the body and/or on the surface of the field matter. The ballast resister can be realized as a barrier in the shape of n?n+, p?p+, p?n semiconductor junctions or insulation layer that crosses the charge carrier flow. Components for controlling such electron sources are arranged vertically. This allows to decrease significantly the area taken by the components, and, in such a way, to increase the resolving power of devices and expand fields of their applications. In so doing, owing to whisker-grown field emitters it is possible to control the emission currents by low voltages at strong electric fields.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: March 1, 2005
    Assignee: Crystals and Technologies, Ltd.
    Inventors: Evgeny Invievich Givargizov, Mikhail Evgenievich Givargizov, Vladimir Iliich Ershov, Nina Ivanovna Manshina
  • Patent number: 6858980
    Abstract: In order to ensure hermeticity of a hermetic container and to suppress occurrence of electrical leakage, a display device is provided with a faceplate including an anode to be supplied with an externally-supplied electric potential, a rear plate arranged facing the faceplate at a predetermined spacing therefrom, a metal pin for supplying the electric potential to the anode from outside of the rear plate through a penetration hole in the rear plate, wherein the penetration hole includes the metal pin by insertion. The metal pin includes an axis portion disposed in the penetration hole and a flange portion which is integral with this axis portion and which is located adjacent an opening end of the penetration hole. The flange portion is joined to the rear plate for hermetically sealing the penetration hole.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: February 22, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kinya Kamiguchi
  • Patent number: 6856091
    Abstract: A discharge chamber for an arc discharge metal halide lamp having light permeable walls bounding a discharge region in which ionizable materials are provided with at least one electrode accommodation opening therein extending along a selected path between that discharge region and a region outside those walls. An electrode arrangement extends through the electrode accommodation opening having therein a thin electrical conductor positioned at least in part therein with a major surface that has surface curvature in at least some of those portions thereof positioned in said electrode accommodation opening to be in one of many alternative configurations. A sealing frit of mixed metal oxides is positioned about at least a portion of the thin electrical conductor within the electrode accommodation opening both at the major surface thereof and on an opposite side thereof.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: February 15, 2005
    Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Electric Works, Ltd.
    Inventors: Timothy Lee Kelly, Jagannathan Ravi, Huiling Zhu
  • Patent number: 6856079
    Abstract: An arc discharge metal halide lamp having a discharge chamber with visible light permeable walls bounding a discharge region through which walls a pair of electrode assemblies are supported with interior ends thereof positioned in the discharge region spaced apart from one another. These electrode assemblies each also extend through a corresponding capillary tube affixed to the walls to have exterior ends thereof positioned outside the arc discharge chamber. At least one of these electrode assemblies comprises an electrode discharge structure with a discharge region shaft extending into the capillary tube corresponding thereto. A helical coil positioned in part about the discharge region shaft extends outwardly in that corresponding capillary tube to be in direct contact with an interconnection shaft extending outside of that corresponding capillary tube to provide an exterior end of this electrode assembly.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: February 15, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Huiling Zhu
  • Patent number: 6849996
    Abstract: An electron emissive composition comprises a barium tantalate composition of the formula (Ba1?x, Cax, Srp, Dq)6(Ta1?y, Wy, Et, Fu, Gv, Caw)2O(11±?) where ? is an amount of about 0 to about ?3; and wherein D is either an alkali earth metal ion or an alkaline earth ion; E, F, and G, are alkaline earth ions and/or transition metal ion; x is an amount of up to about 0.7; y is an amount of up to about 1; p and q are amounts of up to about 0.3; and t is an amount of about 0.05 to about 0.10, u is an amount of up to about 0.5, v is an amount of up to about 0.5 and w is an amount of up to about 0.25. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition with a binder; and sintering the barium tantalate composition with the binder at a temperature of about 1000° C. to about 1700° C.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: February 1, 2005
    Assignee: General Electric Company
    Inventors: Shankar Madras Venugopal, Alok M. Srivastava, Holly Ann Comanzo, Vikas Midha, William Winder Beers, Gopi Chandran Ramachandran, Mukunda Srinivas Adyam
  • Patent number: 6836063
    Abstract: A display tube is provided that can improve light emission efficiency without raising a breakdown voltage. The display tube has a tubular vessel defining a discharge gas space and a pair of display electrodes for generating surface discharge along the circumferential surface of the vessel and opposing discharge traversing the inside of the vessel.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: December 28, 2004
    Assignee: Fujitsu Limited
    Inventors: Manabu Ishimoto, Tsutae Shinoda, Akira Tokai, Hitoshi Yamada
  • Patent number: 6806629
    Abstract: An amorphous diamond material that is capable of emitting electrons in a vacuum upon the input of a sufficient amount of energy is disclosed. The material may utilize both compositional and geometrical aspects in order to maximize electron output and minimize required energy input. In one aspect, the amorphous diamond material may include at least about 90% carbon atoms with at least about 30% of such carbon atoms bonded in distorted tetrahedral coordination. Further, the material may be configured with an emission surface having an asperity height of from about 10 to about 10,000 nanometers. A variety of energy types may be used separately or in combination to facilitate electron flow, such as thermal energy, light energy, and induced electric field energy. The amorphous diamond material may be incorporated into a variety of vacuum-type devices, such as switches, laser diodes, electrical generators, and cooling devices.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: October 19, 2004
    Inventor: Chien-Min Sung
  • Patent number: 6777860
    Abstract: A luminous element (10) for a lamp is double helix-shaped, with two connection parts (18, 20) situated at one end of said double helix. The diameter (D1, D2) of the double helix increases consistently in the direction of the two connection parts (18, 20) of the luminous element (10). The invention also relates to a lamp with a luminous element of this type, to a method for producing a luminous element of this type and to a device for carrying out the production method.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: August 17, 2004
    Assignee: Patent Treuhand-Gesellschaft fur Elektrische Gluhlampen mbh
    Inventor: Felix Franck
  • Patent number: 6774565
    Abstract: The invention relates to a tungsten electrode which causes minimal cracking when sealed in a quartz glass envelope. The invention includes forming a substantially uniform oxide coating on a selected portion of the shank of a tungsten electrode followed by reducing the oxide coating to substantially elemental tungsten, wherein the electrode exhibits superior properties when sealed in a lamp having a quartz glass envelope. The invention also includes the electrode made by the process.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: August 10, 2004
    Assignee: Welch Allyn, Inc.
    Inventor: Dean A. Bell
  • Patent number: 6768263
    Abstract: A short arc type mercury lamp in which a cathode and an anode are disposed opposite one another inside an arc tube, at least a noble gas and mercury are filled into the arc tube, cathode contains thorium oxide, a cone-shaped part that continues on from a cathode body is formed on the cathode, and a protruding part that continues on from the cone-shaped part is formed, wherein the number of grain boundaries on a straight line that passes through the approximate center of an arbitrary section in the radial direction of the protruding part is at least 0.5 per mm but not more than 100 per mm.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: July 27, 2004
    Assignee: Ushio Denki Kabushiki Kaisya
    Inventors: Yoshinori Aiura, Yukio Yasuda
  • Patent number: 6768253
    Abstract: An internal magnetic shield includes a pair of opposing long side walls (1), a pair of opposing short side walls (2), and an opening (3) enclosed by these side walls in the center. The short side walls (2) are provided with notches (4) having a substantially home-plate shape. This configuration can reduce mislanding of an electron beam on the entire screen and easily balance the amount of mislanding due to geomagnetism in the tube-axis direction and in the horizontal direction perpendicular to the tube axis. As a result, a cathode ray tube capable of displaying images without displacement and unevenness of colors can be provided.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: July 27, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Iwamoto, Shin-ichiro Hatta, Ryuichi Murai, Masaki Kawasaki, Shigeo Nakatera, Tomohisa Mikami
  • Patent number: 6737793
    Abstract: An apparatus for emitting electrons is provided. The apparatus includes a subsurface emitter having a sharp tip, a substrate including a base, and electrical continuity between the tip, the base, and an external circuit. This emitter structure may be used to form individual emitters or arrays of emitters. Also provided is a method of making electron emitters which is comprised of implanting energetic ions into a diamond lattice to form cones or other continuous regions of damaged diamond. These regions are more electrically conducting than the surrounding diamond lattice, and have locally sharp tips at or near the point of entry of the ion into the diamond. The tips may then also be additionally coated with a layer of a wide band-gap semiconductor.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: May 18, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Pehr Pehrsson, James Butler
  • Patent number: 6680562
    Abstract: A electron emission cathode includes an emitter having an apex from which electrons are emitted. The emitter is attached to a heating filament at a junction and extends from the junction both forward toward the apex and rearward. A reservoir of material that lowers the work function of the emitter is positioned on the rearward extending portion of the emitter. By positioning the reservoir on the rearward extending portion, the reservoir can be positioned sufficiently far from the junction to reduce its temperature and thereby greatly increase the useful life, of the emitter without adversely affected the emission characteristics of the source.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: January 20, 2004
    Assignee: FEI Company
    Inventors: James B. McGinn, Sander G. den Hartog, David S. Jun, Gerald G. Magera, Gregory A. Schwind
  • Patent number: 6664721
    Abstract: A field emitter (10) having improved electron emission properties is provided. Electron-emitting microtip protrusions (14) in an emitter layer (12) are separated from a dielectric layer (18) by an interlayer (16) that prevents substantial mixing of the dielectric (16) and the emitter layer (12) during growth of the dielectric layer (18). A conductive gate electrode layer (20) is deposited on the dielectric layer (18). For carbon-based emitters, aluminum is one of several suitable interlayers between the carbon layer and a silicon dioxide dielectric layer.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: December 16, 2003
    Assignee: Extreme Devices Incorporated
    Inventors: Keith D. Jamison, Donald E. Patterson, Charlie Hong, Randolph D. Schueller, David F. Hebert, Richard L. Woodin
  • Patent number: 6657377
    Abstract: In a polarized electrical component, a first electrode is provided at an inner-side bottom face of the component, and a second electrode is provided at an outer-side bottom face of the component. One of the first and second electrodes serves as an anode electrode, and the other serves as a cathode electrode.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: December 2, 2003
    Assignee: NEC Corporation
    Inventor: Hideki Seki
  • Patent number: 6646367
    Abstract: The present invention relates to electronics and particularly to field emitters used in M-type microwave devices. The design of a multi-layer field emitter is proposed which has at least one operating film and supporting films, providing mechanical strength and preventing penetration of corrosion materials into the operating film at high operating temperatures. The supporting films could be produced from the same material or material with linear expansion coefficients equal or close to that of the operating film material. Built-in mechanical stress can cause not only deformation but also a break of the film during its exploitation in a wide range of temperatures. In the inventive structure the thermal stresses in the operating film during an emission from its surface are lower due to good thermal contact with supporting films.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: November 11, 2003
    Assignee: L-3 Communications Corporation
    Inventor: Vladimir Makhov
  • Publication number: 20030173886
    Abstract: A cathode sleeve structure for housing a heater. The cathode sleeve structure comprises: a case member that is cylindrical and an end thereof is open; a plurality of supporting members that extend radially from vicinities of the end of the case member; and a linkage member that connects the plurality of supporting members. The case member, the plurality of supporting members, and the linkage member are formed as one piece.
    Type: Application
    Filed: December 17, 2002
    Publication date: September 18, 2003
    Inventors: Mika Yamagishi, Satoru Nakagawa, Yoji Yamamoto
  • Patent number: 6617774
    Abstract: In order to provide a thin-film electron emitter device of a structure wherein electric connection between a top electrode and top electrode busline can be secured and also to provide a display apparatus using the thin-film electron emitter device, the top electrode busline thin on its connection side with the top electrode is formed on a field insulator which is thicker than an insulator forming electron emission areas and which is formed around the insulator, and the top electrode covers the top electrode busline to be connected with said thin part of said top electrode busline.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: September 9, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Toshiaki Kusunoki, Mutsumi Suzuki
  • Patent number: 6600266
    Abstract: It is an object of the present invention to assuredly prevent occurrence of minute cracks in a seal portion of a lamp for improvement of the pressure resistance and service life of the lamp. To achieve the object, there is provided a seal structure of a lamp including: (a) a lamp envelope having a light emitting tube and a seal portion; (b) a metal foil embedded in the seal portion of the lamp envelope; (c) a light emitting element attached to one of opposite ends of the metal foil and disposed in the light emitting tube; and (d) an outer lead rod attached to the other end of the metal foil and led out of the seal portion, the seal structure comprising a separable layer interposed between the seal portion and a portion of the light emitting element embedded in the seal portion.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: July 29, 2003
    Assignee: Phoenix Electric Co., Ltd.
    Inventor: Atsuji Nakagawa
  • Patent number: 6590342
    Abstract: The electric lamp has a ceramic lamp vessel (1) having a filling of rare gas and metal halide. Current conductors (2, 3) which support electrodes (4, 5) inside the discharge vessel (1) enter the discharge vessel (1) in a gastight manner through a ceramic sealing compound (6). At least one of the current conductors (2, 3) has inside the lamp vessel (1) a first, halogen-resistant part (21, 31) which is selected from tungsten silicide, molybdenum aluminide, molybdenum boride, pentamolybdenum trisilicide and combinations of at least two of these intermetallic compounds. These compounds have a coefficient of thermal expansion which corresponds to that of the discharge vessel (1). It is thereby prevented that the discharge vessel starts leaking if the ceramic sealing compound (6) extends beyond the first part (21, 31).
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: July 8, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Elisabeth Onnekes-Van Der Voort, Hendrik Dreuning, Franciscus H. Van Lierop, Peter A. Seinen, Martin F. C. Willemsen, Mark Bolech
  • Patent number: 6528199
    Abstract: A graphite article in the form of a flexible graphite sheet having transverse fluid channels passing through the sheet and a groove formed in one of the surfaces of the sheet communicating with a plurality of the transverse fluid channels is presented.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: March 4, 2003
    Assignee: Graftech Inc.
    Inventors: Robert Angelo Mercuri, Thomas William Weber, Michael Lee Warddrip
  • Publication number: 20030015952
    Abstract: This invention relates to C type bulb center column construction., The main characteristic consists in a mass to combine the tie two lead wires, should combine central pivot tie of mass a the center tube present the cross shape, make two lead wires because of in the center tube however compartment two side end. Make the tungsten silk anti because of concentration by two the sides keep a safe space to let divide equally draw apart get anti is interlacing short, and the drubbing one construction do not share the space and then order the lamp turn down the heat energy to lift to increase the service life. This case differ early times center column depend on oviduct, center column composition piece complicated, manufacture to do not occupy the bigger space easily to wait for the defect, energy doubly life compliant reduction production process, promote the quality stability application capability.
    Type: Application
    Filed: July 18, 2001
    Publication date: January 23, 2003
    Inventor: Chun-Teng Lee
  • Patent number: 6504292
    Abstract: In accordance with the invention, an improved conductive nanostructure assembly comprises an array of metallized nanostructures disposed on a conductive substrate. The substrate can also be metallized. Such assemblies provide continuous electron transport from the substrate to the tips of the nanostructures. Several ways of making such assemblies are described along with several devices employing the assemblies.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: January 7, 2003
    Assignee: Agere Systems Inc.
    Inventors: Kyung Moon Choi, Sungho Jin, Gregory Peter Kochanski, Wei Zhu
  • Publication number: 20030001480
    Abstract: The invention relates to a luminous element for a lamp. Said luminous element (10) is double helix-shaped with two connection parts (18, 20) situated at one end of said double helix. The diameter (D1, D2) of the double helix increases consistently in the direction of the two connection parts (18, 20) of the luminous element (10). The invention also relates to a lamp with a luminous element of this type, to a method for producing a luminous clement of this type and to a device for carrying out the production method.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 2, 2003
    Inventor: Felix Franck
  • Patent number: 6472804
    Abstract: An electrode for an electro-optical device is provided. Light is passing through this electrode which comprises a pattern of conductive elements. The elements have dimensions small compared to the wavelength of light, so that the electrode appear transparent. The light intensity distribution after having penetrated the electrode compared with the light intensity distribution before having penetrated the electrode is influenced by forward scattering.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: October 29, 2002
    Assignee: International Business Machines Corporation
    Inventors: Peter Mueller, Walter Riess
  • Patent number: 6424082
    Abstract: An output structure for material processing apparatus facilitates field replacement of consumable components, while maintaining important alignments. Contoured surfaces within the output structure mate with corresponding contoured surfaces on the consumable components, thereby facilitating alignment of the consumable components with an axis of the output structure. Material processing apparatus employing such surfaces include lasers and plasma arc torches and, with proper alignment, apparatus performance is improved. Typical consumable components include electrodes, swirl rings, nozzles, and shields. The consumable components can be axially translatable with respect to each other, thereby promoting contact starting of a plasma arc torch. An installation tool for consumable components also serves to align the components with an axis of the output structure.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: July 23, 2002
    Assignee: Hypertherm, Inc.
    Inventors: Charles M. Hackett, Yutaka Nakano, Zhipeng Lu, Aaron D. Brandt, Brian J. Currier, Kenneth J. Woods
  • Patent number: 6420821
    Abstract: A cathode for a magnetron having concave/convex portions on a surface of a cylindrical base metal with thermionic emitting materials being fixedly attached to concave portions from among the concave/convex portions. The convex portions of the concave/convex portions are arranged to be inclining. It is enabled to effectively protect thermionic emitting materials from inverse impulse of electrons or ions and from oscillation to thereby restrain consumption and omission of these thermionic emitting materials and to decrease higher harmonics of radiation.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: July 16, 2002
    Assignee: New Japan Radio Co., LTD
    Inventors: Kiyoshi Kishiki, Yukio Torikai, Toshihiko Yamashita, Hideyuki Obata
  • Publication number: 20020074919
    Abstract: A spark plug electrode is disclosed. The electrode comprises, based upon the total weight of the electrode, about 83 wt. % to about 96.8 wt. % copper, about 3.0 wt. % to about 9.0 wt. % chromium, and about 0.2 wt. % to about 8.0 wt. % niobium. A spark plug is also disclosed. The spark plug comprises a shell disposed in contact with an insulator body. A center electrode is disposed at a lower end of the insulator body. A side electrode is also disposed at a lower end of the shell. This side electrode is coaxially aligned with the center electrode. At least one of the center electrode and the side electrode comprises a core composition of about 83 wt. % to about 96.8 wt. % copper, about 3.0 wt. % to about 9.0 wt. % chromium and about 0.2 % to about 8.0 % niobium, based upon the total weight of the composition. A resistor section is also disposed in electrical communication with the center electrode.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 20, 2002
    Inventors: William J. Labarge, Conrad H. Anderson, John Giacchina, David A. Smith, David J. Draeger
  • Patent number: 6384527
    Abstract: A flat panel display is disclosed which includes a faceplate with a faceplate interior side, and a backplate including a backplate interior side in an opposing relationship to the faceplate interior side. Side walls are positioned between the faceplate and the backplate. The side walls, faceplate and backplate form an enclosed sealed envelope. A plurality of phosphor subpixels are positioned at the faceplate interior side. A plurality of field emitters are positioned at the backplate interior side. The field emitters emit electrons which strike corresponding phosphor subpixels. A plurality of scattering shields surround each phosphor subpixel and define a subpixel volume. The scattering shields reduce the number of scattered electrons exiting from their corresponding subpixel volume. This reduces the number of scattered electrons from charging internal insulating surfaces in the envelope, as well as striking the non-corresponding phosphor subpixels.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: May 7, 2002
    Assignee: Candescent Technologies Corporation
    Inventors: Christopher J. Spindt, John E. Field, Duane A. Haven
  • Patent number: 6384520
    Abstract: A cathode structure for use in field emission display (FED) devices includes four layers. A first layer consists of conducting lines supported on an insulating substrate. A second layer consists of thin non-conducting lines crossing the conducting lines. A third layer consists of a thick layer of non-conducting material with holes centered between the thin non-conducting lines of the second layer and extending over a portion of the thin non-conducting lines. A fourth layer consists of conducting lines containing holes of the same dimension as and aligned with the holes in the third layer exposing portions of the conducting lines of the first layer and of the non-conducting lines of the second layer. Emissive material is deposited on the exposed portions of the conducting lines of the first layer to produce a cathode for an FED device. The four-layer cathode structure improves emission characteristics such as current density and uniformity for planar edge emitters and surface emitters.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: May 7, 2002
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventor: Benjamin E. Russ
  • Patent number: 6351060
    Abstract: The present invention is an improved igniter assembly for electrical ignition of a gas burner. The improved igniter assembly includes an electrode mantle that has a wavy surface.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: February 26, 2002
    Inventor: Uwe Harneit
  • Publication number: 20020014832
    Abstract: An electrode structure for a display device comprising a gate electrode proximate to an emitter and a focusing electrode separated from the gate electrode by an insulating layer containing a ridge. When the focusing electrode is an aperture-type electrode, the ridge protrudes closer to the emitter than the sidewall of the gate electrode or the sidewall of the focusing electrode. When the focusing electrode is a concentric-type electrode, the ridge protrudes above the upper surface of the gate electrode or the upper surface of the focusing electrode. A method for making the aperture-type and concentric-type electrode structures is described. A display device containing such electrode structures is also described. By forming an insulating ridge between the gate and focusing electrodes, shorting between the two electrodes is reduced and yield enhancement increased.
    Type: Application
    Filed: June 20, 2001
    Publication date: February 7, 2002
    Inventors: Benham Moradi, Zhong-Yi Xia, Tianhong Zhang
  • Patent number: 6340859
    Abstract: A cold cathode electron emission device activating electron emission applying an external electric field is provided, in which an inversion layer inverting the type of a semiconductor layer by an external electric field is generated to form a shallow channel, and an electron beam due to a number of electrons is emitted by an avalanche breakdown in the shallow channel. A single or plurality of active regions are formed in the upper portion of the semiconductor substrate in fabrication and then an inversion layer is formed by the external electric field. The cold cathode electron emission device is driven according to the principle that a number of electrons are emitted by the avalanche breakdown in the inversion layer. Thus, since the high-density electrons are instantaneously emitted at the inversion layer by the external electric field, a preheating is not required.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: January 22, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Yong Lee, Byoung Lyong Choi
  • Publication number: 20010026128
    Abstract: A low-pressure mercury-vapor discharge lamp is provided with a discharge vessel and a first and a second end portion (12a). The discharge vessel encloses a discharge space provided with a filling of mercury and an inert gas in a gastight manner. Each end portion (12a) supports an electrode (20a) arranged in the discharge space. An electrode shield (22a) encompasses the electrodes (20a) and, according to the invention, carries an electric current during operation, and is at a temperature ≧250° C., preferably ≧450° C., during nominal operation of the discharge lamp. Preferably, a first current supply conductor (30a) electrically contacts a first current divider (23a), which is electrically connected to a second current divider (23a′) via a shell-shaped body (24a). Said second current divider (23a′) electrically contacts the electrode (20a), which is connected to the second current supply conductor (30a′).
    Type: Application
    Filed: March 8, 2001
    Publication date: October 4, 2001
    Inventor: Rifat Ata Mustafa Hikmet
  • Publication number: 20010015615
    Abstract: A display includes a substrate and an emitter formed on the substrate. A first dielectric layer is formed on the substrate to have a thickness slightly less than a height of the emitter above the planar surface and includes an opening formed about the emitter. The display also includes a conductive extraction grid formed on the first dielectric layer. The extraction grid includes an opening surrounding the emitter. The display further includes a second dielectric layer formed on the extraction grid and a focusing electrode formed on the second dielectric layer. The focusing electrode is electrically coupled to the emitter through an impedance element. The focusing electrode includes an opening formed above the apex. The focusing electrode provides enhanced focusing performance together with reduced circuit complexity, resulting in a superior display.
    Type: Application
    Filed: May 1, 2001
    Publication date: August 23, 2001
    Inventor: Zhongyi Xia
  • Patent number: 6229258
    Abstract: A display includes a substrate and an emitter formed on the substrate. A first dielectric layer is formed on the substrate to have a thickness slightly less than a height of the emitter above the planar surface and includes an opening formed about the emitter. The display also includes a conductive extraction grid formed on the first dielectric layer. The extraction grid includes an opening surrounding the emitter. The display further includes a second dielectric layer formed on the extraction grid and a focusing electrode formed on the second dielectric layer. The focusing electrode is electrically coupled to the emitter through an impedance element. The focusing electrode includes an opening formed above the apex. The focusing electrode provides enhanced focusing performance together with reduced circuit complexity, resulting in a superior display.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: May 8, 2001
    Assignee: Micron Technology, Inc.
    Inventor: Zhongyi Xia