Patents Assigned to OSRAM
  • Patent number: 6696312
    Abstract: A method of fabricating OLED devices is disclosed. A conductive layer is patterned by pillars to form electrodes in the device, wherein portions of the pillars have at least 2 sub-rows to prevent shorting of adjacent electrodes. In one embodiment, the ends of the pillars are split into at least 2 sub-rows.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: February 24, 2004
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Ewald Guenther, Hooi Bin Lim, Ed Vin Soh, Hou Siong Tan, Hagen Klausmann
  • Patent number: 6692610
    Abstract: An improved method of fabricating a device such as OLED is disclosed. The method includes applying an adhesive on a cap or substrate. The adhesive is partially cured to initiate the cross-linking process while remaining in the liquid phase. The cap is then mounted onto the substrate and the adhesive is cured to encapsulate the device. By partially curing the adhesive prior to mounting the cap, the curing of the adhesive can be achieved without prolonged exposure to UV radiation or high temperatures which can adversely impact the device.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: February 17, 2004
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Hong Yee Low, Soo Jin Chua, Ewald Karl Michael Guenther
  • Patent number: 6692986
    Abstract: A method of encapsulating components based on organic semiconductors, includes adhesively bonding a housing to a substrate. Bonding is carried out using a UV-curable reactive adhesive including an epoxy resin, a hydroxy-functional reaction product of an epoxide compound with a phenolic compound, a silane-type adhesion promoter, and a photoinitiator, and also if desired, filler. This method is used in particular for encapsulating organic light-emitting diodes (OLEDs).
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: February 17, 2004
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Heiner Bayer, Wolfgang Rogler, Wolfgang Roth
  • Publication number: 20040028106
    Abstract: A semiconductor laser device, having an epitaxial semiconductor body (40) with a waveguiding layer (22), which contains an active radiation-generating layer (20), a laser-active emitter region (12), disposed in the epitaxial semiconductor body (40) and having a primary direction (30), which essentially corresponds to the exit direction of the laser radiation from the emitter region, and an amplifier region (14), adjoining the emitter region (12) in the semiconductor body (40) in the primary direction (30), for amplifying the laser radiation. The emitter region (12) and the amplifier region (14) form active regions in the semiconductor material. The waveguiding layer (22) is removed in some regions of the semiconductor body (40) outside the active regions (12, 14), in such a way that flanks (18; 32; 36) of the semiconductor body (40) that are produced by the removal form a shallow angle &tgr; with the plane in which lies the waveguiding layer.
    Type: Application
    Filed: February 24, 2003
    Publication date: February 12, 2004
    Applicant: Osram Opto Semiconductors GmbH
    Inventor: Wolfgang Schmid
  • Publication number: 20040027405
    Abstract: A system and method is presented for measuring the volume of an ink-jet droplet or the relative volumes of a plurality of ink-jet droplets using their electrical properties. In a preferred embodiment a single small capacitor or an array of capacitors is used to measure the dielectric properties of ink-jet droplets and the absolute drop volumes are derived. In an alternative preferred embodiment the relative differences in drop volumes are determined. A feedback circuit, such as one using lock-in technique, may be used to automatically adjust subsequent drop volumes.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 12, 2004
    Applicant: Osram Opto Semiconductors GmbH & Co. OHG.
    Inventors: Matthias Stoessel, Karl Pichler
  • Patent number: 6688933
    Abstract: The invention relates to a method for producing a structural component from at least one optoelectronic functional element and a glass pane, with the functional element being disposed in the region of a primary surface of the glass pane. This structural element is distinguished by the fact that the primary surface of the glass pane is connected to a frame such that the frame surrounds the edge surfaces of the functional element in the finished state of the composite element. The invention further relates to a functional element that can be produced with the method.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: February 10, 2004
    Assignee: Osram Opto Semiconductors GmbH & Co. oHG
    Inventor: Rudolf Heimgartner
  • Patent number: 6686043
    Abstract: A method of coating phosphor particles comprises introducing an inert gas into a reaction vessel and charging phosphor particles into the reaction vessel. The reaction vessel is then heated to a reaction temperature and a coating precursor is introduced while the temperature is maintained for a time sufficient to saturate the phosphor particles with the precursor. Thereafter, continuous precursor is introduced into the reaction vessel, along with an oxygen/ozone mixture. The inert gas flow, oxygen/ozone mixture flow and further precursor are supplied for a time sufficient to coat the phosphor particles.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: February 3, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Chen-Wen Fan, Richard G. W. Gingerich, Dale E. Benjamin
  • Patent number: 6683412
    Abstract: A high pressure sodium lamp (100) having an evacuated glass envelope (6) with a plurality of electrically conductive support members therein and extending therethrough. An elongated arc tube (14) having a pair of electrodes (26) extending therethrough is affixed to the electrically conductive support members within the glass envelope. A gas fill includes a quantity of mercury and sodium within the elongated tube. The arc tube is selected from a translucent material that, when the lamp is operating, will have a wall temperature of about 1250 degrees Celsius, a wall loading of from about 18.9 to about 22.2 w/cm sqr., and a power consumption of from 150 to 400 watts. Further, the amount of mercury is reduced from 14.4 mgs/arc tube to 10.8 mgs/arc tube, allowing lamps having power consumption from 150 to 400 watts to pass the Toxicity Characteristics Leaching Procedure (TCLP).
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: January 27, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Paul H. Ingalls, Robert Dolan, Elliot Wyner
  • Patent number: 6682663
    Abstract: A pigment, especially a yellow to red emitting luminescent material, with a host lattice of the nitridosilicate type MxSiyNz:Eu, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba and wherein z=⅔x+{fraction (4/3)}y.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: January 27, 2004
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Gilbert Botty, Hubertus T. Hintzen, Jost W. H. van Krevel
  • Patent number: 6682664
    Abstract: An orange-yellow-emitting zinc sulfide-based electroluminescent phosphor is described wherein the phosphor has a brightness of greater than 10 foot-Lamberts. More particularly, the phosphor has a brightness of at least about 13 foot-Lamberts and an x color coordinate from about 0.51 to about 0.56 and a y color coordinate from about 0.42 to about 0.48. The zinc sulfide phosphor is activated with manganese, copper, chlorine, and a metal selected from gold and antimony.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: January 27, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Xianzhong Chen, Robert L. Stevens, Judy A. Belinski-Wolfe, Fuqiang Huang, Chen Wen Fan, Michael A. Maxwell
  • Patent number: 6682211
    Abstract: Open LED chips may be arranged directly on the surface of a replaceable lamp capsule without intervening packages that reduce overall light emission. The chips may be oriented in such a way that the lamp generates a unique “donut” shape radiation pattern, which is suitable for a flat and shallow secondary optics to collimate the light into a desired beam pattern, and to reduce the unaesthetic appearance of points of light in an onlooker's view. The LED chips are driven in such a way that one chip fails, the whole lamp fails to avoid a partially lit appearance. At the same time the heat generated by the LED chips may be conducted away by the support structure to possibly vehicle's sheet metal to enhance life of the LED chip. The standardization of this LED lamp makes this product more cost effective thus to be used in broader lighting applications.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: January 27, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: George J. English, Kun Huang, Robert L. Garrison
  • Patent number: 6683277
    Abstract: A laser ablation system includes a first embodiment of a nozzle assembly where a laser beam is emitted through the nozzle assembly to remove materials on a target. The nozzle assembly includes a nozzle having a top end, and a window placed on the top end of the nozzle. The window includes one or more apertures and the laser beam is emitted through one of those apertures. Another laser ablation system includes a second embodiment of a nozzle assembly where a laser beam is emitted through the nozzle assembly to remove materials on a target. The nozzle assembly includes a nozzle having one or more channels at a top end of the nozzle. The nozzle assembly also includes a window that is placed on the one or more channels. A gas flows through the one or more channels and that gas flow reduces debris deposition on the window.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 27, 2004
    Assignee: Osram Opto Semiconductors
    Inventors: Ian Millard, Karl Pichler
  • Patent number: 6680578
    Abstract: A novel OLED light source and method for controlling said OLED light source panel are disclosed wherein said light source is constructed such that active areas are segmented and said segments are separately addressable. In one embodiment, the segments are a series of RGB lines or stripes and the control unit may separately drive each individual stripe or may drive all separate color lines or may drive separate lines within a given region on the panel. In another embodiment, the stripes of the panel are connected to control lines that are either current limited or have a fuse that serves to obviate a current runaway condition on the panel. In another embodiment, the output light chromaticity of the panel is controlled either by users or by light sensors.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: January 20, 2004
    Assignee: Osram OPTO Semiconductors, GmbH
    Inventors: Homer Antoniadis, Karl Pichler
  • Patent number: 6680587
    Abstract: A ballast (20′) for powering a plurality of gas discharge lamps (12,14,16) includes a load-adaptable charge pump power factor correction arrangement (62,64,66,100,200,300) for feeding back a high frequency current having a magnitude that is dependent on the number of operating lamps.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: January 20, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Grigoriy A. Trestman, Joseph L. Parisella, Richard H. Koeppl
  • Patent number: 6680585
    Abstract: An apparatus and method to implement an electronic ballast for a high intensity discharge lamp having AC lamp current centered at approximately 300 kHz minimizes the ballast cost and utilizes modulation of the lamp current to avoid acoustic resonance. In order to minimize the number of additional components providing the modulation function, the ripple voltage produced by PFC circuit is fed through a capacitor to a FREQUENCY SET input of an inverter controller. The value of the capacitor can be chosen to produce the desired modulation range.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: January 20, 2004
    Assignee: Osram Sylvania Inc.
    Inventor: Grigoriy A. Trestman
  • Publication number: 20040009304
    Abstract: A system and method is presented for deposing a liquid on a substrate. The print head of an ink-jet printer emits a liquid containing ink and at least one other component. An energy beam, such as a laser, with sufficient intensity substantially causes at least a partial modification, such as evaporation, of a component of the liquid, thereby altering the drying profile. The ink deposed on the substrate may be used to create devices such as organic transistors and OLEDs.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 15, 2004
    Applicant: Osram Opto Semiconductors GmbH & Co. OGH
    Inventors: Karl Pichler, Matthias Stoessel
  • Publication number: 20040007707
    Abstract: In a light-emitting semiconductor component having a thin-film stack (30) having an active layer (34) and front- and rear-side contact regions (40, 42), which are formed on a front side (60) and a rear side (62) of the thin-film stack (30) and serve for impressing current into the active layer (34), the thin-film stack (30) has a light generation region (50), in which photons are generated by recombination of charge carriers, and has a light coupling-out region (54), in which light is coupled out from the component. The light generation region (50) and the light coupling-out region (54) are at least partly separated from one another in the plane of the thin-film stack (30).
    Type: Application
    Filed: May 30, 2003
    Publication date: January 15, 2004
    Applicant: Osram Opto Semiconductors GmbH
    Inventor: Ralph Wirth
  • Publication number: 20040004301
    Abstract: A method for spheridizing silicon metal particles is described. The method involves injecting irregular silicon metal particles into a high-temperature plasma reactor to melt at least 50 weight percent of the particles. The molten droplets are solidified to form substantially spherical silicon particles having a thin SiO coating which may be removed by treating with a weak hydroxide solution.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 8, 2004
    Applicant: OSRAM SYLVANIA Inc.
    Inventors: Raj P. Singh, David L. Houck, Nelson E. Kopatz, Michael R. Pierce, Scott A. Braymiller
  • Patent number: 6674001
    Abstract: A solder glass which has, by weight: about 60 to 67% Sb2O3; about 27 to 32% B2O3; and from greater than 0 to 10% ZnO. The glass has a softening point between 388 and 466° C., depending on the ZnO content. The glass can be employed as a molten seal in electrical devices such as tungsten halogen or metal halide lamps.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: January 6, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Richard C. Marlor, Paul W. Salvi
  • Patent number: 6669866
    Abstract: A phosphor for light sources, the emission from which lies in the short-wave optical spectral region, as a garnet structure A3B5O12. It is activated with Ce, the second component B representing at least one of the elements Al and Ga, and the first component A is terbium or terbium together with at least one of the elements Y, Gd, La and/or Lu. In a preferred embodiment, a phosphor having a garnet of structure (Tb1−x−yRExCey)3(Al,Ga)5O12, where RE=Y, Gd, La and/or Lu; 0≦x≦0.5−y; 0<y<0.1 is used.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: December 30, 2003
    Assignees: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH, OSRAM Opto Semiconductors GmbH & Co., OHG
    Inventors: Franz Kummer, Franz Zwaschka, Andries Ellens, Alexandra Debray, Guenther Waitl