Patents Represented by Attorney Norman N. Spain
  • Patent number: 6072688
    Abstract: The invention relates to a ceramic multilayer capacitor having a number of ceramic layers on the basis of a doped (Ba,Ca)[Ti,Zr]O.sub.3 as well as a number of electrode layers of Ni, the ceramic layers and the electrode layers being alternately stacked to form a multilayer structure which is provided with electric connections at two side faces, said electric connections being connected to a number of the electrode layers. The invention is characterized in that the composition of the main component of the doped (Ba,Ca)[Ti,Zr]O.sub.3 corresponds to the formula(Ba.sub.1-x Ca.sub.x)(Ti.sub.1-a-b-y Zr.sub.y Mn.sub.a Mo.sub.b A.sub.c).sub.k O.sub.3-.delta.wherein:0.00.ltoreq.x.ltoreq.0.050.10.ltoreq.y.ltoreq.0.250.00<a.ltoreq.0.010.00<b.ltoreq.0.010.00.ltoreq.c.ltoreq.0.010.99<k.ltoreq.0.999and wherein A stands for at least one element selected from the series including Y, Ho, Dy, Er, Yb, Ga, Ni, Mg, Zn and Al, the elements Y, Ga and Zn being preferred.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: June 6, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Detlev Hennings, Peter Hansen
  • Patent number: 6066370
    Abstract: A method is described for the adhesion of a coating (3) on a surface (2) of a substrate (1) of a polyalkylene, such as polypropylene. The method comprises a first deep UV exposure in an inert atmosphere, and a second deep UV exposure in an oxidizing atmosphere. Between the two exposure steps, the substrate surface (2) is rinsed with an organic solvent. Such a rinsing step increases the adhesion of the coating and reduces the total exposure time.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: May 23, 2000
    Assignee: U.S. Philips Corporation
    Inventor: Martin H. Blees
  • Patent number: 6048616
    Abstract: Doped encapsulated semiconductor nanoparticles of a size (<100 .ANG.) which exhibit quantum effects. The nanoparticles are precipitated and coated with a surfactant by precipitation in an organometallic reaction. The luminescence of the particles may be increased by a further UV curing step.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: April 11, 2000
    Assignee: Philips Electronics N.A. Corp.
    Inventors: Dennis Gallagher, Rameshwar Bhargava, Jacqueline Racz
  • Patent number: 6048244
    Abstract: A method for providing a resistive focusing lens structure for an electron beam device including forming a suspension of particles of a mixture of, by weight, of about 33-50% of an oxidic conductive material including about 40-60% of a lead ruthenate, about 25-38% of a lead titanate and about 2-15% of a ruthenium oxide, and of about 50-67% of a glass including about 30-40% of silicon dioxide (SiO.sub.2), about 3-7.5% alumina (Al.sub.2 O.sub.3), and about 53-67% of lead oxide (PbO) in a suspending medium consisting essentially of a non-acidic liquid having a boiling point of less than 150.degree. C., applying the suspension to an inside surface of a glass member to thereby provide a coating of the particles on the inside surface, firing the coating at a temperature of 700-900.degree. C. and before of after firing the coating, patterning the coating. The present method provides highly reproducible resistive focusing lens structures.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: April 11, 2000
    Assignee: Philips Electronics N. A. Corporation
    Inventors: William N. Osborne, Petrus J. M. Prinsen, Edwin A. Montie, Edward C. Cosman
  • Patent number: 6045979
    Abstract: A description is given of a method of metallizing an electrically insulating plate, for example, of glass having a large number of holes. Said holes are internally provided with a metal layer and the plate is provided with metal tracks. The metal used is mainly aluminum. The aluminum is coated with a thin protective layer of chromium, cobalt, nickel, zirconium or titanium. Said protective layer makes it possible to use a photosensitve, cataphoretic lacquer for providing the metal layer with a structure. The method can very suitably be used for the manufacture of selection plates for thin electron displays.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: April 4, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Gijsbertus A.C.M. Spierings, Willem L.C.M. Heijboer, Leo O. Remeeus
  • Patent number: 6043974
    Abstract: A ceramic composition on the basis of a doped BaTiO.sub.3, a ceramic multilayer having such ceramic composition and a monolithic capacitor having such a composition are provided according to the invention. The composition corresponds to the formula(Ba.sub.1-a-b Ca.sub.a Dy.sub.b)(Ti.sub.1-c-d-e-f Zr.sub.c Mn.sub.d Nb.sub.e).sub.f O.sub.3+.delta.wherein: 0.00<a.ltoreq.0.200.006.ltoreq.b.ltoreq.0.0160.00<c.ltoreq.0.250.3b+0.7e<d.ltoreq.0.0140.001.ltoreq.e.ltoreq.0.0051.000<f.ltoreq.1.007.Capacitors having this ceramic composition as a dielectric material show an increased life-time well as a good resistance against degradation of their electrical properties if used at high temperatures under dc conditions.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: March 28, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Zhien C. Chen, Wen-Hsi Lee, Tseung-Yuen Tseng
  • Patent number: 6014255
    Abstract: A polarizing beam splitter for splitting a non-collimated light beam of a given wave length into two sub-beams, each of a different state of polarization, has a substrate provided with a polarizing stack of thin layers and a compensating means for compensating retardation of the light beam occurred in passing through the polarizing stack.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: January 11, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Johannes Van Der Wal, Willem G. Ophey
  • Patent number: 6013314
    Abstract: A method of manufacturing a phosphor composition of a phosphor comprising a pigment coating of hematite, includes a first step in which the phosphor is coated with an iron-containing starting compound for hematite, and a second step, in which the phosphor with the coating is calcined, thereby converting the iron-containing starting compound for hematite into hematite. The calcining operation is carried out in an atmosphere of a gas mixture of water vapor and an oxidizing gas.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: January 11, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Michael Bredol, Jacqueline Merikhi, Dieter Wadow, Irmgard Kohler
  • Patent number: 6013978
    Abstract: Adherence of the phosphor screen to the face panel of a color cathode ray tube is improved by placing a UV-reflective filter on the inside of the face panel prior to photolithographic forming of the screen, in order to reflect transmitted UV light back onto those areas from which the light emerged, thereby effectively increasing the exposure dosage of those areas.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: January 11, 2000
    Assignee: U.S. Philips Corporation
    Inventor: Robert L. Donofrio
  • Patent number: 6010779
    Abstract: A display screen having a phosphor coating comprising a phosphor composition of a phosphor provided with a coating which comprises one or more oxgyen compounds of the elements zinc, aluminium, magnesium, calcium and barium as well as colloidal SiO.sub. particles, said colloidal SiO.sub.2 particles being composed of SiO.sub.2 particles having an average size of 4 nm.ltoreq.d.ltoreq.30 nm, corresponding to a specific surface of 100 m.sup.2 /g.ltoreq.A.sub.s .ltoreq.550 nm m.sup.2 /g, and SiO.sub.2 particles having an average size of 50 nm.ltoreq.d.ltoreq.150 nm, corresponding to a specific surface of 25 m.sup.2 /g.ltoreq.A.sub.s .ltoreq.70 m.sup.2 /g.
    Type: Grant
    Filed: October 5, 1997
    Date of Patent: January 4, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Friederike Picht, Jacqueline Merikhi, Joachim Opitz, Hans-Otto Jungk, Jan W. G. de Bakker, Miguel Boutelje, Arlis G. Van Braam, Frans H. A. Vollebregt
  • Patent number: 6011642
    Abstract: The electrochromic element (20) comprises a substrate (28) and an electrochromic layer (25) having a thickness d on the basis of a metal oxide selected from the group formed by tungsten oxide, molybdenum oxide, niobium oxide, manganese oxide and zirconium oxide, or combinations thereof. The electrochromic layer (25) is characterized in that the oxygen content in the layer (25) varies across the thickness d of the layer (25). Preferably, the variation of the oxygen content in the layer (25) comprises at least two local maxima and a local minimum. Preferably, the electrochromic layer (25) is composed of a plurality of sub-layers (25', 25", 25'"), with the variation of the oxygen content in the layer (25) occurring predominantly at the location of transitions between two sub-layers. Preferably, the electrochromic layer (25) comprises the metal oxide tungsten oxide WO.sub.x. The electrochromic element may be provided on the display screen of a display device.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: January 4, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Teunis J. Vink, Erik P. Boonekamp, Roy G. F. A. Verbeek
  • Patent number: 5997800
    Abstract: A method of manufacturing a ceramic multilayer component, comprising electrically conductive and electrically insulating layers which are stacked in alternate arrangement in a multilayer structure, which method comprises the following steps:providing three extrudable polymeric mixtures, each mixture comprising a binder and a particulate filler, whereby:(a) a first mixture comprises a ceramic filler;(b) a second mixture comprises a metallic filler and a first binder;(c) the third mixture comprises a metallic filler and a second binder;with the aid of an extrusion device having an extrusion channel which is provided with a layer-multiplication element, manufacturing an extruded multilayer stack comprising a plurality of the basic units abac, in which layers a,b,c correspond respectively to the first, second and third mixtures, the stack having two oppositely situated side walls along which part of each layer is exposed;with the aid of a first solvent, dissolving away part of each layer b exposed along a first s
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: December 7, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Reinhold Wimberger Friedl, Peter P. Koets, Johan G. De Bruin
  • Patent number: 5993894
    Abstract: A conductive layer comprising metal-oxide or metal-oxides is applied to a substrate byproviding a layer comprising a metal-salt or a mixture of metal-salts on the substrate,bringing the layer into contact with an alkaline solution, and, subsequently,subjecting the layer to a thermal treatment (heating).
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: November 30, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Johannes H. W. G. Den Boer, Claudia Mutter, Sipke Wadman, Henricus X. Willems
  • Patent number: 5995359
    Abstract: An electronic component has a substrate, electrode layers for the bottom electrode, top electrode and, optionally, one or more intermediate electrodes, and has intermediate functional layers, these electrode layers include an electroconductive oxidic compound, at least one electrode layer is composed of EuO.sub.x, wherein 1.ltoreq.x.ltoreq.2, LiTi.sub.2 O.sub.4, LiV.sub.2 O.sub.4, SrVO.sub.3, Eu.sub.x NbO.sub.3, Na.sub.x WO.sub.3, A.sub.2 P.sub.8 W.sub.32 O.sub.112, wherein A=K, Rb,RTl, Na.sub.x Ta.sub.y W.sub.1-y O.sub.3, Na.sub.1-x Sr.sub.x NbO.sub.3, LaTiO.sub.3 CeTiO.sub.3, CaVO.sub.3, La.sub.1-x Sr.sub.x VO.sub.3, SrCoO.sub.3, CaRuO.sub.3, SrRuO.sub.3, BaRuO.sub.3, BaPbO.sub.3, SrMoO.sub.3, Sr.sub.0.5 La.sub.0.5 O.sub.3, La.sub.4 BaCu.sub.5 O.sub.13-x, La.sub.2-x Sr.sub.x CuO.sub.4-.delta., YBa.sub.2 Cu.sub.3 O.sub.7-.delta., Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8.sub.+d, Bi.sub.2 Sr.sub.2 CuO.sub.6+d, Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10+d, Tl.sub.2 Ba.sub.2 CaCu.sub.2 O.sub.8, TlBa.sub.2 CuO.sub.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: November 30, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Mareike K. Klee, Hans-Wolfgang Brand, Hans-Otto Jungk
  • Patent number: 5990531
    Abstract: The present invention is directed to a technique for manufacturing semiconductor devices in which p type GaN is formed on a substrate and semi-insulating AlN is formed on the P type GaN with n type GaN formed on the p type GaN and partially below the AlN. Highly efficient high power and high voltage semiconductor devices are formed through this technique having better or similar properties to silicon type semiconductors.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: November 23, 1999
    Assignee: Philips Electronics N.A. Corporation
    Inventors: Nikhil R. Taskar, Piotr M. Mensz, Babar A. Khan
  • Patent number: 5989738
    Abstract: An organic electroluminescent component with a layer arrangement includes a first electrode layer, an inorganic layer which conducts electrons, one or several optoelectronically active layers with at least one light-emitting layer which comprises an organic emitter, and a second electrode layer. The inorganic layer which conducts electrons is an N-type conducting oxide of a transition metal chosen from the group consisting of zirconium oxide, hafnium oxide, vanadium oxide, barium titanate, barium-strontium titanate, strontium titanate, calcium titanate, calcium zirconate, potassium tantalate, and potassium niobate.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: November 23, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Markus Haase, Ulrich Kynast, Herbert Boerner, Cornelis Ronda
  • Patent number: 5986400
    Abstract: A description is given of an electroluminescent (EL) device (1) composed of polymeric LEDs comprising an active layer (7) of a conjugated polymer and a transparent polymeric electrode layer (5) having electroconductive areas (51) as electrodes. Like the active layer (7), the electrode layer (5) can be manufactured in a simple manner by spin coating. The electrode layer (5) is structured into conductive electrodes (51) by exposure to UV light. The electrodes (9) and (51) jointly form a matrix of LEDs for a display. When a flexible substrate (3) is used, a very bendable EL device is obtained.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: November 16, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Aemilianus G. J. Staring, David B. Braun
  • Patent number: 5969419
    Abstract: By treating the silicon-oxide insulating layer of a semiconductor device with an aqueous metal-salt solution of a metal of an ion radius of less than 0.110 nm, for example, Sc, La or Zr, before a platinum electrode layer is provided on the insulating layer, the platinum layer shows excellent adhesive properties.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: October 19, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Rudolf P. Tijburg, Karel M. Van Der Waarde
  • Patent number: 5937493
    Abstract: A method of manufacturing a plurality of electronic multilayer components is disclosed in which each multilayer component comprises alternately stacked electrically conductive layers and electrically insulating layers, the electrically conductive layers being electrically connected in a periodically alternate arrangement to different edges of the multilayer component. The method comprises the steps of providing a substrate which is endowed with a regular pattern of surface protrusions on one face; depositing individual multilayer components into intervening spaces delimited by the protrusions; depositing electrically conductive layers for connection to a given edge of a multilayer component, wherein each connection occurs at an angle (.theta.) of less than 90.degree.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: August 17, 1999
    Assignee: U.S. Philips Corporation
    Inventor: Antonius J. M. Nellissen
  • Patent number: 5925582
    Abstract: A novel type of glass having a low sodium content (<0.1 wt. % Na.sub.2 O), which can be used as a bulb glass (10) for "TL" lamps and for compact fluorescent lamps. Said glass is free of the toxic and/or corrosive components PbO, F, As.sub.2 0.sub.3 and Sb.sub.2 0.sub.3. Apart from favorable properties as regards phosphor poisoning and mercury absorption, resulting in a favorable maintenance of the lamp, said glass is characterized by a wide working range W.R. (=T.sub.work -T.sub.soft), so that glass tubing can be readily made of said glass. By virtue of the low liquidus temperature (T.sub.liq), the glass can be drawn into glass tubing which is free of crystals.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: July 20, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Bartholomeus Filmer, Gerardus H.A.M. Van Der Steen