Patents Assigned to Ifire IP Corporation
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Patent number: 7595585Abstract: A pixel sub-structure for an electroluminescent display and a method for making the same. The sub-structure comprising: a color conversion layer; and an optical enhancement layer; wherein at least a portion of the color conversion layer is integrated with at least a portion of the optical enhancement layer.Type: GrantFiled: November 24, 2006Date of Patent: September 29, 2009Assignee: Ifire IP CorporationInventors: Abdul M. Nakua, Xingwei Wu, Maizhi Yang, Dan Daeweon Cheong, John Wesley Moore
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Patent number: 7586256Abstract: A patterned phosphor structure, and EL laminate containing same, forming red, green, and blue sub-pixel phosphor elements for an AC electroluminescent display. The patterned phosphor structure includes at least a first and a second phosphor emitting light in different ranges of the visible spectrum, but with combined emission spectra contains red, green, and blue light, the first and second phosphors being in a layer, arranged in adjacent, repeating relationship to each other to provide a plurality of repeating first and second phosphor deposits. Photolithographic methods for producing the patterned phosphor structure are also provided. Also provided is an improved dielectric layer for use in an EL laminate, including a pressed, sintered ceramic material having, compared to an unpressed, sintered dielectric layer of the same composition, improved dielectric strength, reduced porosity and uniform luminosity in an EL laminate.Type: GrantFiled: August 14, 2003Date of Patent: September 8, 2009Assignee: IFire IP CorporationInventors: Xingwei Wu, George A. Kupsky
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Patent number: 7585545Abstract: The invention is a method of vacuum evaporation of a multi-element sulfur bearing thin film compositions onto a substrate. The method comprises targeting a source of gas or vapour sulfur species at one or more source materials that make up at least part of the thin film composition during evaporation of the source materials. The sulfur species is heated to a high temperature as it reaches the one or more source materials and there is a chemical interaction of the sulfur species with evaporant from the one or more source materials during deposition of said thin film composition. The method is particularly useful for the deposition of phosphors for full colour ac electroluminescent displays employing thick film dielectric layers with a high dielectric constant.Type: GrantFiled: June 28, 2004Date of Patent: September 8, 2009Assignee: Ifire IP CorporationInventors: Yongbao Xin, Joe Acchione, Terry Hunt
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Patent number: 7582228Abstract: The present invention provides thioaluminate phosphor compounds BaAl2S4 and BaAl4S7 with novel crystal structures that have higher luminosity and improved color coordinates. The invention is also directed to rare earth element activated barium thioaluminate phosphor films comprising a phosphor compound having a novel crystal lattice structure that increases the electroluminescent light emission from the film. The phosphor films are for use in electroluminescent displays and in particular, thick film dielectric electroluminescent displays.Type: GrantFiled: August 14, 2008Date of Patent: September 1, 2009Assignee: iFire IP CorporationInventors: James Alexander Robert Stiles, Morad Kamkar
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Patent number: 7579769Abstract: The present invention is directed to color electroluminescent displays comprising a novel sub-pixel structure and method for making the same. The sub-pixel structure has an electroluminescent phosphor, which emits blue light, and a photoluminescent phosphor, which emits at least one other color as a result of absorption of the blue light. The invention is also directed to novel photoluminescent phosphor materials.Type: GrantFiled: November 8, 2005Date of Patent: August 25, 2009Assignee: IFIRE IP CorporationInventors: Xingwei Wu, Abdul M. Nakua
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Patent number: 7575775Abstract: The present invention is a low pressure physical vapor deposition method for the deposition of multi element sulfide thin film phosphor compositions for electroluminescent devices where a thermal source comprising a polysulfide compound provides the source of sulfur species for phosphor film deposition and/or annealing. The method is particularly useful for the deposition of phosphors for full color ac electroluminescent displays employing thick film dielectric layers with a high dielectric constant.Type: GrantFiled: October 6, 2004Date of Patent: August 18, 2009Assignee: Ifire IP CorporationInventors: James Alexander Robert Stiles, Paul Barry Del Bel Belluz, John Wesley Moore
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Patent number: 7556721Abstract: The present invention relates to novel thiosilicate phosphor compositions. The invention is further a physical vapor deposition method for the deposition of rare earth activated thiosilicate phosphor compositions comprising providing at least one or more source materials where the source materials may comprise a barium silicon alloy, an intermetallic barium silicon compound, a protected barium metal and combinations thereof; providing an activator species; and effecting deposition of the one or more source materials and activator species as a thin film phosphor composition on a selected substrate. The method allows for the deposition of blue thin film electroluminescent phosphors with high luminance and colors required for TV applications.Type: GrantFiled: October 29, 2005Date of Patent: July 7, 2009Assignee: IFIRE IP CorporationInventors: Alexander Kosyachkov, Vincent Joseph Alfred Pugliese, Joe Acchione, Stephen Charles Cool
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Patent number: 7540976Abstract: A sputtering target for fluorescent thin-film formation comprising a matrix material and a luminescent center material, wherein said matrix material has a chemical composition represented by the following formula (1), and simultaneously satisfies conditions represented by the following inequalities (2) to (5). MIIvAxByOzSw ??(1) 0.05?v/x?5 ??(2) 1?y/x?6 ??(3) 0.01?z/(z+w)?0.85 ??(4) 0.6?(v+x+3y/2)/(z+w)?1.5 ??(5) wherein MII represents one or more elements selected from the group consisting of Zn, Cd and Hg, A represents one or more elements selected from the group consisting of Mg, Ca, Sr, Ba and rare earth elements, B represents one or more elements selected from the group consisting of Al, Ga and In, and v, x, y, z and w each represent numerical values satisfying the conditions specified in the inequalities (2) to (5).Type: GrantFiled: March 5, 2004Date of Patent: June 2, 2009Assignee: Ifire IP CorporationInventors: Yoshihiko Yano, Tomoyuki Oike, Naruki Kataoka, Masaki Takahashi, Yukio Kawaguchi
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Patent number: 7534504Abstract: An improved fine grained zinc sulfide phosphor is provided for use in ac electroluminescent displays. The fine-grained zinc sulfide phosphor film exhibits improved luminance and may be used in conjunction with a structure or substance to minimize or prevent reaction of the fine grained phosphor with oxygen. The invention is particularly applicable to zinc sulfide phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.Type: GrantFiled: August 27, 2003Date of Patent: May 19, 2009Assignee: Ifire IP CorporationInventors: Guo Liu, Alexander Kosyachkov, Yue (Helen) Xu, James Alexander Stiles
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Patent number: 7497755Abstract: An apparatus for improving testability of electroluminescent displays (ELDs) comprises at least two sets of electrodes, one set for connecting rows of pixels, and a second set for connecting columns of pixels, wherein at least one electrode set is interleaved in two subsets. The first subset has electrode extensions of a first length, and the second subset has electrode extensions of a second, shorter, length. A first connector is disposed generally in a direction perpendicular to the electrode extensions of both subsets and in electrical contact with the electrode extensions of the second subset. A second connector is disposed generally in a direction perpendicular to the electrode extensions of the first subset, and in electrical contact with the electrode extensions of only the first subset. A set of insulating patches separate the electrode extensions of the first subset from the first connector.Type: GrantFiled: September 29, 2004Date of Patent: March 3, 2009Assignees: Ifire IP Corporation, Sanyo Electric Co., Ltd.Inventors: Hisashi Abe, Derek Luke
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Publication number: 20080315762Abstract: A novel and improved composite thick film dielectric structure is provided to improve the operating stability of phosphors used in thick dielectric ac electroluminescent displays. The novel structure comprises one or more aluminum oxide layers disposed between the composite thick dielectric layer and the bottom of the phosphor layer of these displays.Type: ApplicationFiled: April 25, 2008Publication date: December 25, 2008Applicants: IFIRE IP CORPORATION, SANYO ELECTRIC CO., LTD.Inventors: Hiroki Hamada, Isao Yoshida, Vincent Joseph Alfred Pugliese, Manuela Peter, James Alexander Robert Stiles
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Patent number: 7442446Abstract: A novel structure is provided to improve the luminance and operating stability of phosphors used in ac thick film dielectric electroluminescent displays. The novel structure comprises aluminum nitride barrier layers in contact with the phosphor films to prevent phosphor degradation due to reaction with oxygen. The barrier layers can be deposited using vacuum deposition processes that are compatible with the processes used to deposit and anneal the phosphor films. The invention is particularly applicable to phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.Type: GrantFiled: December 15, 2003Date of Patent: October 28, 2008Assignee: Ifire IP CorporationInventor: Guo Liu
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Publication number: 20080124541Abstract: The invention is a sealed thick film dielectric display where the display comprises a thick film dielectric display structure and an adhesive layer provided over the display structure. The invention also provides a seal where the seal comprises an adhesive layer bonded to the underside of a cover plate and to the surface of a thick film dielectric electroluminescent display. The seal substantially inhibits the exposure of display components to atmospheric contaminants.Type: ApplicationFiled: July 3, 2007Publication date: May 29, 2008Applicant: IFIRE IP CORPORATIONInventor: Manuela Peter