Patents Examined by Matthew J. Gerike
  • Patent number: 6333599
    Abstract: A plasma display system has a plasma display panel including a pair of base plates for forming a plurality of discharge cells therebetween, and a plurality of pairs of electrodes for sustaining discharge to form plasma through a dielectric substance thereon in the discharge cells. The pairs of electrodes for sustaining discharge are disposed on a same one of the pair of base plates. The plasma display panel is configured such that a discharge current integrated over 40% of a discharge time Td from a start of the discharge time Td is smaller than a discharge current integrated over a remainder of the discharge time Td in one discharge, wherein the discharge time Td is defined as a time interval over which a discharge current does not drop to less than 5% of its maximum value in one discharge.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: December 25, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Yoshimi Kawanami, Keizo Suzuki, Kenichi Yamamoto, Shirun Ho, Masaji Ishigaki, Ryohei Satoh, Masayuki Shibata, Tomohiko Murase, Michifumi Kawai
  • Patent number: 6323590
    Abstract: A flat panel display and a method for forming a flat panel display. In one embodiment, the flat panel display includes a wall which is held in place by a structure formed either on the faceplate or on the backplate. In one embodiment the supporting structure is formed by two adjacent walls that form a slot which mechanically restrains the wall. In another embodiment a slot is formed within the faceplate and the walls of the slot mechanically restrain the wall. In one embodiment wall segments are inserted into supporting structures that mechanically restrain each wall segment. In another embodiment a UV curable or a heat curable adhesive is used to maintain walls in their proper alignment and position. In yet another embodiment a conductive material is melted so as to bond conductive lines located on the wall and conductive lines located on the faceplate.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: November 27, 2001
    Assignee: Candescent Technologies Corporation
    Inventors: Chungdee Pong, John D. Porter, Theodore S. Fahlen, Christopher J. Curtin, Robert G. Neimeyer, Paul N. Ludwig
  • Patent number: 6323592
    Abstract: Disclosed is a conductive antireflection film comprising a laminate structure consisting of a conductive layer and an insulating covering layer covering the surface of the conductive layer and a conductive member connected at one end to the conductive layer and exposed at the other end to the outside. The conductive member is brought into contact with an electrolytic solution so as to control the state of the metal contained in the conductive layer, making it possible to prevent effectively an electromagnetic wave from leaking to the outside and to obtain a clear image of a high contrast.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: November 27, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshinori Takahashi, Tsuyoshi Oyaizu, Hidemi Matsuda
  • Patent number: 6320306
    Abstract: A shadow mask for color picture tubes has a cathode-side surface covered with a heat-insulating layer, an electron reflecting and absorbing layer, and a heat-emitting cover layer. Some of the electrons are reflected while others are absorbed in the cover layer and transformed to heat, but the heat does not act directly on the mask and is emitted into the interior of the tube. Local temperature differences which particularly occur with high contrast pictures and cause partial doming of the perforated mask are reduced.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: November 20, 2001
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Gunter Heine, Bernhard Schonert, Peter Neumann, Ulrich Schulke
  • Patent number: 6316869
    Abstract: A shadow mask in a color cathode ray tube, is disclosed, formed with invar alloy thin plate with a texture which allows formation of uniform sized electron beam pass-through holes, with excellent roundness and a small etching deviation in etching, including a ratio aR of a diffraction intensity R{100} of {100} crystal planes to a diffraction intensity R{110} of {110} crystal planes being greater than unity, and a ratio gR of a sum of a diffraction intensity R{100} of {100} crystal planes and a diffraction intensity R{111} of {111} crystal planes to a diffraction intensity R{110} of {110} crystal planes being in a range 2˜20, obtained from the diffraction intensity R{111} of {111} crystal planes, the diffraction intensity R{200} of {200} crystal planes, the diffraction intensity R{220} of {220} crystal planes, and the diffraction intensity R{
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: November 13, 2001
    Assignee: LG Electronics Inc.
    Inventors: Sang Mun Kim, No Jin Park, Myung Hoon Oh
  • Patent number: 6313575
    Abstract: A color picture tube which prevents a change in convergence due to current leaked from a resistor during operation of the color picture, thus, providing a stable and satisfactory convergence characteristic in the overall region of the screen. The color picture tube comprises a main electron lens portion, a deflection yoke, and an inline electron gun that includes an electron beam generating portion for generating three electron beams in line consisting of a center beam and a pair of side beams. Distances between the center axis of the center beam passage hole and that of each of the side beam passage holes in a first electrode (G5), a second electrode (GM) and a third electrode (G6) are represented by Sg(1), Sg(2) and Sg(3). The first and second electrodes are separated by a gap L(1); and the second and third electrodes are separated by a gap L(2). The distance Sg(2) is set to satisfy the relationship: Sg(2)={L(1)×Sg(3)+L(2)×Sg(1)}/{L(1)+L(2)}.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: November 6, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Junichi Kimiya, Fumitaka Hoshino, Shigeru Sugawara
  • Patent number: 6307313
    Abstract: A yoke portion with a deflection coil mounted thereon has a rectangular section perpendicular to the tube axis. A horizontal deflection coil of the deflection coil is formed of a loop winding including a pair of parallel portions extending along the both sides of the tube axis and crossover portions connecting the parallel portions. The crossover portion nearer to the neck is formed of a winding wound in the direction along the tube axis.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: October 23, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Fukuda
  • Patent number: 6307318
    Abstract: A method and apparatus (50, 70, 90) for making a back glass substrate (24) for a plasma display panel (20) by forming hot sheet glass G heated above its annealing point and embodied either as a continuous ribbon (60) or discrete sheets (74). The hot forming provides the hot sheet glass G with gas discharge troughs (38) spaced by barrier ribs (40). The hot forming of the sheet glass G heated above its annealing point can be performed by a rotatable forming member (62) having curved projections (66) or by a press member (78) having elongated projections (84). The constructed plasma display panel (20) has a front glass substrate (22) and a back glass substrate (24) with the gas discharge trough and barrier rib construction made by hot forming above the annealing point.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: October 23, 2001
    Assignee: Photonics Systems, Inc.
    Inventors: Steven A. F. Kaake, Robert D. Nicholson
  • Patent number: 6304022
    Abstract: A spark plug includes a center electrode, an insulator provided outside the center electrode, a metallic shell provided outside the insulator, a ground electrode disposed to face the center electrode, and a spark discharge portion fixed on at least one of the center electrode and the ground electrode for defining a spark discharge gap. The spark discharge portion is formed from a noble metal alloy containing a main component element selected from among Ir, Pt, and Rh, and at least one additional component element differing from the main component element. In the noble metal alloy, the additional component element is distributed such that stripes of high concentration regions and low concentration regions extend in a direction perpendicular to the direction of voltage application.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: October 16, 2001
    Assignee: NGK Spark Plug Co., Ltd.
    Inventor: Wataru Matsutani
  • Patent number: 6304024
    Abstract: There is provided an impregnated-type cathode substrate comprising a large particle diameter low porosity region and a small particle diameter high porosity region which is provided in a side of an electron emission surface of the large particle diameter low porosity region and has an average particle diameter smaller than an average particle diameter of the large particle diameter low pore region and a porosity higher than a porosity of the large particle diameter low porosity region, the impregnated-type cathode being impregnated with an electron emission substance.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: October 16, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Eiichirou Uda, Toshiharu Higuchi, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto, Yoshiaki Ouchi, Kazuo Kobayashi, Takashi Sudo, Katsuhisa Homma
  • Patent number: 6294867
    Abstract: A flat form gas discharge lamp for illuminating a defined area includes a plurality of adjacent spaced apart substantially parallel channels extending across the defined area. The first channels are substantially co-planar with one another, and a plurality of second channels interconnecting end portions of respective pairs of the first channels to form a single confined region such that the first channels confine an ionizable medium for producing light under influence of an electric discharge. The second channels are substantially co-planar with one another while not being co-planar with the first channels.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: September 25, 2001
    Inventor: Judd Lynn
  • Patent number: 6294861
    Abstract: An electric discharge lamp apparatus which incorporates an arc tube 10 structured such that an enclosed glass bulb 12 of an arc tube body 11 is enclosed in an ultraviolet-ray shielding globe 20 and having a front end which is supported by a metal lead support 36 forwards extending from an insulating plug 30 provided with a focusing ring 34 and made of synthetic resin and which has a structure that a rear end of the globe 20 of the arc tube 10 is supported by a metal support member 50 secured to the insulating plug 30, wherein the metal support member 50 is constituted by a metal base plate 51 secured to the insulating plug 30 and forming a reference plane f2 running parallel to the focusing ring 34 on the front surface of the insulating plug and a metal vertically-holding member 60 (a slide plate 61 and an arc-tube holding band 71) integrally joined to the metal base plate 51 and arranged to vertically hold an electrically-discharge axis L of the held arc tube 10 with respect to reference plane f2 of the meta
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: September 25, 2001
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Kunimasa Mochiduki, Masato Harazaki, Yasuyoshi Numajiri, Takeshi Fukuyo, Yoshitaka Ohshima, Shinichi Irisawa
  • Patent number: 6278231
    Abstract: The invention provides a nanostructure including an anodized film including nanoholes. The anodized film is formed on a substrate having a surface including at least one material selected from the group consisting of semiconductors, noble metals, Mn, Fe, Co, Ni, Cu and carbon. The nanoholes are cut completely through the anodized film from the surface of the anodized film to the surface of the substrate. The nanoholes have a first diameter at the surface of the anodized film and a second diameter at the surface of the substrate. The nanoholes are characterized in that either a constriction exists at a location between the surface of the anodized film and the surface of the substrate, or the second diameter is greater than the first diameter.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: August 21, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Iwasaki, Tohru Den
  • Patent number: 6274980
    Abstract: An organic light emitting device (OLED) which emits high intensity light is formed as a stack of individual OLEDs simultaneously emitting light of the same color.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: August 14, 2001
    Assignee: The Trustees of Princeton University
    Inventors: Paul E. Burrows, Stephen R. Forrest
  • Patent number: 6274972
    Abstract: An electron beam apparatus includes an electron source having an electron-emitting device, an electrode for controlling an electron beam emitted from the electron source, a target to be irradiated with an electron beam emitted from the electron source and a spacer arranged between the electron source and the electrode. The spacer has a semiconductor film on the surface thereof that is electrically connected to the electron source and the electrode.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: August 14, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideaki Mitsutake, Shinichi Kawate, Naoto Nakamura, Yoshihisa Sano
  • Patent number: 6268689
    Abstract: A convergence magnet assembly for a cathode ray tube (CRT) includes a convergence magnet assembly having at least a one pair of magnet rings having magnetized portions at angular intervals and installed on a neck portion of a CRT for static convergence of three electron beams in an in-line arrangement; and a correction ring with an odd number of poles located at one side of the neck, adjacent an electron beam at one side of the in-line three electron beams, increasing a shift in the electron beam position caused by the pair of magnet rings.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: July 31, 2001
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jang-Jin Joung
  • Patent number: 6268692
    Abstract: A vacuum envelope of a cathode ray tube includes a rectangular panel having an inner surface where a substantially rectangular phosphor screen is formed, a neck in which an electron gun is provided, and a funnel connected between the panel and the neck. The funnel has a first portion having a large diameter and positioned on the phosphor screen side, and a substantially truncated quadrangular pyramid-like second portion positioned on the neck side. From the second portion to the neck, a deflection yoke is mounted on the outer surface of the funnel. Where the vacuum envelope is cut along a plane including a tube axis, the shapes of the cross-sections of the first and second portions have an inflection point at the boundary between the first and second portions. The end of the deflection yoke on the phosphor screen side is positioned near the inflection point.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: July 31, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Yokota, Yuuichi Sano
  • Patent number: 6262524
    Abstract: A color cathode ray tube, and an electron gun of the same, having a superior focus characteristic. An electron gun is provided, emitting electron beams through a Gla electrode, G2a electrode, GMAa electrode, GMBa electrode, and G3 electrode. The electrons from a quadrupole and main focus lenses. Three cathodes 12B, 12B, etc. for discharging R, G, and B electron beams are provided in parallel with each other. A cup-shaped conductive member 60 is affixed to the GMBa electrode at the downstream side of the quadrupole lens formed by the GMAa electrode and GMBa electrode. The two side electron beams are oriented toward the center electron beam by the potential difference between the cup-shaped conductive member 60 and G3 electrode.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: July 17, 2001
    Assignee: Sony Corporation
    Inventor: Yoshihiro Ouchi
  • Patent number: 6262534
    Abstract: A light source(10) includes a bulb (14) having a pair of outer leads (16,17) extending therefrom in parallel and sealed directly in the glass stem (22), whereby the outer leads (16,17) and the input leads in the glass stem (22) are the same. A protective shroud (30) surrounding the light source (10) may be supported by a metal member (40) welded to one of the leads between the stem (22) and the light source (10). The metal member carries a strap (43) seated in a circumferential constriction (36) of the shroud (30), which may be a commercially available glass vial. In another embodiment, horseshoe-shaped members (18,19) having mutually opposed concavities are welded to respective leads (16,17) and a shroud (30) is locally heated to form a circumferential constriction (36) which shrinks into the concavities, thereby supporting the shroud internally. Alternatively, the shroud can be shrunk directly against the pinch (15) so that it converges toward the open end (35) where it engages leads (16,17).
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: July 17, 2001
    Assignee: Philips Electronics North America Corp.
    Inventors: Pierce Johnson, Jr., Mark Morrell, Chris Heijmans
  • Patent number: 6262527
    Abstract: Cathode ray tube comprising an electron gun which is constructed in such a way that the gas pressure near the electron-emissive layer (30) of the cathode is lower than in the other parts of the tube. This can be achieved by reducing the aperture between the G1 (33) and G2 (36), by providing the G2 (36) with a skirt (43). The wall of the skirt, the G1 and the G2 may also be at least partly coated with a getter (41).
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: July 17, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Tom Van Zutphen, Frederik C. Gehring