Patents by Inventor Detlef Starick
Detlef Starick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8581286Abstract: Exemplary embodiments of the present invention relate to a light emitting device including a light emitting diode and a surface-modified luminophore. The surface-modified luminophore includes a silicate luminophore and a fluorinated coating arranged on the silicate luminophore.Type: GrantFiled: August 15, 2011Date of Patent: November 12, 2013Assignee: Seoul Semiconductor Co., Ltd.Inventors: Chung Hoon Lee, Walter Tews, Gundula Roth, Detlef Starick
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Patent number: 8551360Abstract: The invention relates to a method of manufacturing a rare-earth doped alkaline-earth silicon nitride phosphor of a stoichiometric composition. Said method comprising the step of selecting one or more compounds each comprising at least one element of the group comprising the rare-earth elements (RE), the alkaline-earth elements (AE), silicon (Si) and nitrogen (N) and together comprising the necessary elements to form the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE). The method further comprises the step of bringing the compounds at an elevated temperature in reaction for forming the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE). In such a method normally a small amount of oxygen, whether intentionally or not-intentionally added, will be incorporated in the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE).Type: GrantFiled: October 14, 2008Date of Patent: October 8, 2013Assignees: Leuchtstoffwerk Breitungen GmbH, Ledon Lighting Jennersdorf GmbHInventors: Cheng-Jun Duan, Hubertus Theresia Hitzen, Sylke Rösler, Detlef Starick, Sven Rösler, Anne Charlotte Antoinette Delsing
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Patent number: 8535564Abstract: A light emitting device having oxyorthosilicate luminophores is disclosed. The light emitting device includes a light emitting diode and luminescent substances disposed around the light emitting diode, to absorb at least a portion of light emitted from the light emitting diode and emitting light having different wavelength from that of the absorbed light. The luminescent substances have Eu2+-doped silicate luminophores in which solid solutions in the form of mixed phases between alkaline earth metal oxyorthosilicates and rare earth metal oxyorthosilicates are used as base lattices for the Eu2+activation leading to luminescence. The luminescent substances are used as radiation converters to convert a higher-energy primary radiation, for example, ultra violet (UV) radiation or blue light, into a longer-wave visible radiation and are therefore preferably employed in corresponding light-emitting devices.Type: GrantFiled: April 26, 2010Date of Patent: September 17, 2013Assignee: Seoul Semiconductor, Co., Ltd.Inventors: Chung Hoon Lee, Walter Tews, Gundula Roth, Detlef Starick
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Patent number: 8440106Abstract: Exemplary embodiments of the present invention relate to inorganic phosphors based on silicate compounds having improved stability under a resulting radiation load and resistance to atmospheric humidity, which are capable of converting higher-energy excitation radiation, i.e. ultraviolet (UV) or blue light, with high efficiency into a longer-wavelength radiation which may be in the visible spectral range. A calcium molar fraction x having a value between 0 and 0.05 is added to a silicate phosphor having the general formula Sr3-x-y-zCaxMIIySiO5:Euz.Type: GrantFiled: March 29, 2012Date of Patent: May 14, 2013Assignees: Seoul Semiconductor Co., Ltd., LITEC-LP GmbHInventors: Chung Hoon Lee, Walter Tews, Gundula Roth, Detlef Starick
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Patent number: 8319417Abstract: This invention is related to efficient anorganic phosphors, which are based on an oxysulfide host lattice of the general formula ABOS:M. Furthermore, this invention is related to the use of these phosphors in various technical applications such as fluorescent lamps, colored light or white light emitting LEDs, scanning beam displays working with UV or purple laser as exciting source and other devices in order to convert especially UV or NUV radiation or short-wave visible light into an useful longer-wave visible radiation. This invention is also related to light sources and/or display applications that contain the inventive phosphor.Type: GrantFiled: March 5, 2009Date of Patent: November 27, 2012Assignee: Leuchtstoffwerk Breitungen GmbHInventors: Cheng-Jun Duan, Theresia Hubertus Hintzen, Sylke Rösler, Detlef Starick
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Publication number: 20120205674Abstract: Exemplary embodiments of the present invention relate to a light emitting device including a light emitting diode and a surface-modified luminophore. The surface-modified luminophore includes a silicate luminophore and a fluorinated coating arranged on the silicate luminophore.Type: ApplicationFiled: August 15, 2011Publication date: August 16, 2012Applicant: SEOUL SEMICONDUCTOR CO., LTD.Inventors: Chung Hoon Lee, Walter Tews, Gundula Roth, Detlef Starick
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Publication number: 20120181481Abstract: Exemplary embodiments of the present invention relate to inorganic phosphors based on silicate compounds having improved stability under a resulting radiation load and resistance to atmospheric humidity, which are capable of converting higher-energy excitation radiation, i.e. ultraviolet (UV) or blue light, with high efficiency into a longer-wavelength radiation which may be in the visible spectral range. A calcium molar fraction x having a value between 0 and 0.05 is added to a silicate phosphor having the general formula Sr3-x-y-zCaxMIIySiO5:Euz.Type: ApplicationFiled: March 29, 2012Publication date: July 19, 2012Applicants: LITEC-LP GMBH, SEOUL SEMICONDUCTOR CO., LTD.Inventors: Chung Hoon LEE, Walter TEWS, Gundula ROTH, Detlef STARICK
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Patent number: 8173042Abstract: Exemplary embodiments of the present invention relate to inorganic phosphors based on silicate compounds having improved stability under a resulting radiation load and resistance to atmospheric humidity, which are capable of converting higher-energy excitation radiation, i.e. ultraviolet (UV) or blue light, with high efficiency into a longer-wavelength radiation which may be in the visible spectral range. A calcium molar fraction x having a value between 0 and 0.05 is added to a silicate phosphor having the general formula Sr3-x-y-zCaxMIIySiO5:Euz.Type: GrantFiled: September 10, 2010Date of Patent: May 8, 2012Assignees: Seoul Semiconductor Co., Ltd., LITEC-LP GmbHInventors: Chung Hoon Lee, Walter Tews, Gundula Roth, Detlef Starick
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Publication number: 20120037850Abstract: A surface-modified silicate luminophore includes a silicate luminophore and a coating includes at least one of (a) a fluorinated coating including a fluorinated inorganic agent, a fluorinated organic agent, or a combination of fluorinated inorganic and organic agents, the fluorinated coating generating hydrophobic surface sites and (b) a combination of the fluorinated coating and at least one moisture barrier layer. The moisture barrier layer includes MgO, Al2O3, Y2O3, La2O3, Gd2O3, Lu2O3, and SiO2 or the corresponding precursors, and the coating is disposed on the surface of the silicate luminophore.Type: ApplicationFiled: July 15, 2011Publication date: February 16, 2012Applicants: LITEC-LP GMBH, SEOUL SEMICONDUCTOR CO., LTD.Inventors: Chung Hoon LEE, Walter TEWS, Gundula ROTH, Detlef STARICK
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Publication number: 20120001205Abstract: Exemplary embodiments of the present invention relate to light emitting devices including strontium oxyorthosilicate-type phosphors. The light emitting device includes a light emitting diode, which emits light in the UV or visible range, and phosphors disposed around the light emitting diode to absorb light emitted from the light emitting diode and emit light having a different wavelength from the absorbed light. The phosphors include an oxyorthosilicate phosphor having a general formula of Sr3-x-y-zCaxMIIySiO5: Euz with a calcium molar fraction in the range of 0<x?0.05.Type: ApplicationFiled: December 20, 2010Publication date: January 5, 2012Applicant: SEOUL SEMICONDUCTOR CO., LTD.Inventors: Chung Hoon LEE, Walter TEWS, Gundula ROTH, Detlef STARICK
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Patent number: 8007683Abstract: The invention relates to a luminescent substance consisting of a doped host lattice which absorbs at least one part of exciting radiation when it is excited by a high-energy radiation, thereby releasing an energy-poor emission radiation. The host lattice is embodied in the form of a carbidonitridosilicate-based compound. An illuminant which is used for producing white light and comprises a light emitting element and said luminescent substance are also disclosed.Type: GrantFiled: August 29, 2006Date of Patent: August 30, 2011Assignees: Leuchtstoffwerk Breitungen GmbH, Triodonic.atco Optoelectronics GmbHInventors: Detlef Starick, Sven Rösler, Sylke Rösler, Hubertus Thoresia Hintzen, Yuan Qiang Li
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Publication number: 20110147662Abstract: Exemplary embodiments of the present invention relate to inorganic phosphors based on silicate compounds having improved stability under a resulting radiation load and resistance to atmospheric humidity, which are capable of converting higher-energy excitation radiation, i.e. ultraviolet (UV) or blue light, with high efficiency into a longer-wavelength radiation which may be in the visible spectral range. A calcium molar fraction x having a value between 0 and 0.05 is added to a silicate phosphor having the general formula Sr3-x-y-zCaxMIIySiO5:Euz.Type: ApplicationFiled: September 10, 2010Publication date: June 23, 2011Applicants: SEOUL SEMICONDUCTOR CO., LTD., LITEC-LP GMBHInventors: Chung Hoon LEE, Walter TEWS, Gundula ROTH, Detlef STARICK
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Publication number: 20110050090Abstract: A light emitting device having oxyorthosilicate luminophores is disclosed. The light emitting device includes a light emitting diode and luminescent substances disposed around the light emitting diode, to adsorb at least a portion of light emitted from the light emitting diode and emitting light having different wavelength from that of the absorbed light. The luminescent substances have Eu2+-doped silicate luminophores in which solid solutions in the form of mixed phases between alkaline earth metal oxyorthosilicates and rare earth metal oxyorthosilicates are used as base lattices for the Eu2+ activation leading to luminescence. The luminescent substances are used as radiation converters to convert a higher-energy primary radiation, for example, ultra violet (UV) radiation or blue light, into a longer-wave visible radiation and are therefore preferably employed in corresponding light-emitting devices.Type: ApplicationFiled: April 26, 2010Publication date: March 3, 2011Applicant: Seoul Semiconductor Co., Ltd.Inventors: Chung Hoon LEE, Walter Tews, Gundula Roth, Detlef Starick
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Publication number: 20110043099Abstract: This invention is related to efficient anorganic phosphors, which are based on an oxysulfide host lattice of the general formula ABOS: M. Furthermore, this invention is related to the use of these phosphors in various technical applications such as fluorescent lamps, colored light or white light emitting LEDs, scanning beam displays working with UV or purple laser as exciting source and other devices in order to convert especially UV or NUV radiation or short-wave visible light into an useful longer-wave visible radiation. This invention is also related to light sources and/or display applications that contain the inventive phosphor.Type: ApplicationFiled: March 5, 2009Publication date: February 24, 2011Applicant: LEUCHTSTOFFWERK BREITUNGEN GMBHInventors: Cheng-Jun Duan, Theresia Hubertus Hintzen, Sylke Rosler, Detlef Starick
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Publication number: 20100327229Abstract: Exemplary embodiments of the present invention disclose inorganic luminescent substances with Eu2+-doped silicate luminophores, in which solid solutions in the form of mixed phases between alkaline earth metal oxyorthosilicates and rare earth metal oxyorthosilicates are used as base lattices for the Eu2+ activation leading to the luminescence. These luminophores are described by the general formula (1-x) MII3SiO5.xSE2SiO5:Eu, in which MII preferably represents strontium ion or another alkaline earth metal ion, or another divalent metal ion selected from the group consisting of the magnesium, calcium, barium, copper, zinc, and manganese. These ions may be used in addition to strontium and also as mixtures with one another.Type: ApplicationFiled: May 4, 2010Publication date: December 30, 2010Applicants: Seoul Semiconductor Co., Ltd., LITEC-LP GmbHInventors: Chung Hoon LEE, Walter Tews, Gundula Roth, Detlef Starick
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Patent number: 7855393Abstract: The invention relates to a light emitting device having a radiation emitting element, for example a light emitting diode, and a luminescent material which is able to absorb a part of the radiation sent out by the radiation emitting element and to send out light with a wavelength which is different from the wavelength of the absorbed radiation. The device further has diffusing particles which are able to scatter a part of the radiation sent out by the radiation emitting element, and/or to scatter a part of the light sent out by the luminescent material. The diffusing particles are of non-activated luminescent material, through which production is simplified.Type: GrantFiled: January 8, 2007Date of Patent: December 21, 2010Assignee: Tridonic Optoelectronics GmbHInventors: Sven Rösler, Sylke Rösler, Wolfgang Kempfert, Detlef Starick, Peter Pachler, Stefan Tasch, Paul Hartmann, Hans Hoschopf
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Publication number: 20100288972Abstract: The invention relates to a method of manufacturing a rare-earth doped alkaline-earth silicon nitride phosphor of a stoichiometric composition. Said method comprising the step of selecting one or more compounds each comprising at least one element of the group comprising the rare-earth elements (RE), the alkaline-earth elements (AE), silicon (Si) and nitrogen (N) and together comprising the necessary elements to form the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE). The method further comprises the step of bringing the compounds at an elevated temperature in reaction for forming the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE). In such a method normally a small amount of oxygen, whether intentionally or not-intentionally added, will be incorporated in the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE).Type: ApplicationFiled: October 14, 2008Publication date: November 18, 2010Applicants: LEUCHTSTOFFWERK BREITUNGEN GMBH, LEDON LIGHTING JENNERSDORF GMBHInventors: Sven Roesler, Sylke Rösler, Detlef STARICK, Sven Rösler, Anne Charlotte Antoinette Delsing, Cheng-Jun Duan
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Publication number: 20100155761Abstract: A light emitting device includes a light emitting element comprising a nitride semiconductor and a phosphor that can absorb a part of light emitted from the light emitting element and can emit light of a wavelength different from that of the absorbed light. The phosphor comprises a silicate phosphor comprising three alkali earth metals.Type: ApplicationFiled: February 23, 2010Publication date: June 24, 2010Applicants: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GMBH, Litec GBR, Leuchstoff Breitungen GMBHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wofgang Kempfert, Detlef Starick
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Patent number: 7679101Abstract: The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The phosphor is made of alkaline earth metal silicate fluorescent material activated with europium.Type: GrantFiled: November 30, 2006Date of Patent: March 16, 2010Assignees: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GmbH, Litec GBR, Leuchstoffwerk Breitungen GmbHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wolfgang Kempfert, Detlef Starick
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Publication number: 20090294788Abstract: The invention relates to a light emitting device having a radiation emitting element, for example a light emitting diode, and a luminescent material which is able to absorb a part of the radiation sent out by the radiation emitting element and to send out light with a wavelength which is different from the wavelength of the absorbed radiation. The device further has diffusing particles which are able to scatter a part of the radiation sent out by the radiation emitting element, and/or to scatter a part of the light sent out by the luminescent material. The diffusing particles are of non-activated luminescent material, through which production is simplified.Type: ApplicationFiled: January 8, 2007Publication date: December 3, 2009Applicant: TRIDONIC OPTOELECTRONICS GMBHInventors: Sven Rosler, Sylke Rosler, Wolfgang Kempfert, Detlef Starick, Peter Pachler, Stefan Tasch, Paul Hartmann, Hans Hoschopf