Fluorescent Lamp Patents (Class 427/67)
-
Publication number: 20100033079Abstract: A lamp or light tube that is both shatterproof and produces an after-glow effect. The light tube is comprised of a cylinder sealed by glass and metal end caps on each end of the glass-sealed cylinder, and electrical conducting pins extend from at least one of the metal end caps to connect the light tube to a power source. The glass-sealed cylinder is coated on its exterior with a shatterproof coating composition that emits an after-glow effect. The coating composition is comprised of a strontium aluminate after-glow phosphor, an ethylene acid copolymer resin, and an ultraviolet additive.Type: ApplicationFiled: August 11, 2008Publication date: February 11, 2010Applicant: Shat-R-Shield, Inc.Inventor: Robert J. Nolan
-
Publication number: 20100009069Abstract: The liquid crystal display device of the present invention comprises first and second substrates; a first alignment layer on the first substrate, wherein the first alignment layer includes (spacer S is oxygen, m=10˜10,000), the functional group R includes photo-sensitive constituents and/or non-photo-sensitive constituents, the photo-sensitive constituent includes a material selected from the group consisting of cinnamoyl derivatives, the non-photo-sensitive constituent includes a material selected from the group consisting of CnH2n, CnH2n+1, CnH2nOH, COCnH2n+1, COCnH2n, CnH2n+1?xFx, CnH2n?(x?1)F(x?1), CnH2n?xFxOH, COCnH2n+1?xFx (n=1˜10, x=1˜2n+1), and a combination thereof; and a liquid crystal layer between the first and second substrates.Type: ApplicationFiled: September 15, 2009Publication date: January 14, 2010Inventors: Mi Sook Nam, Young Seok Choi
-
Publication number: 20090322223Abstract: Disclosed is a starter member to which a mercury-absorbing layer is applied and which can be used in low-pressure mercury discharge lamps. A starter member for a low-pressure amalgam discharge lamp comprises a mercury-absorbing layer on a base. A coating layer which is provided on the mercury-absorbing layer has a getter effect and prevents the material of the mercury-absorbing layer from coming off.Type: ApplicationFiled: October 22, 2007Publication date: December 31, 2009Inventors: Kirsten Fuchs, Gerald Hämmer, Paul Lange, Viktor Malik, Thomas Noll, Klaus Pankratz
-
Patent number: 7629018Abstract: A method of manufacturing a light emitting device including a light emitting element is provided, which includes a step of forming a first electrode, a step of forming an insulating layer including an opening over the first electrode, a step of forming a layer containing an organic compound on the first electrode and the insulating layer, a step of forming a second electrode on the layer containing the organic compound, a step of etching the layer containing the organic compound by plasma etching, and a step of connecting the second electrode and a wiring electrically connected to a terminal portion to each other through an adhesive containing a conductive particle.Type: GrantFiled: February 28, 2007Date of Patent: December 8, 2009Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Masakazu Murakami, Satoshi Seo
-
Ink composition, color filter manufactured by using the same, and display device comprising the same
Publication number: 20090284698Abstract: The present invention relates to an ink composition, and more particularly, to an ink composition that comprises a) a binder polymer; b) a polymerizable compound that has an ethylenical unsaturation bond; c) a thermal initiator or photo-initiator; d) I) a solvent that has a boiling point of 180° C. or more, II) a solvent that has a hydroxyl group, and III) a solvent that has a boiling point of less than 180° C.; and e) a pigment, a color filter that is manufactured by using the same, and a display device that includes the same. When the ink composition according to the present invention is used in an inkjet method, it is possible to improve a contrast ratio according to excellent dispersion of fine pigment and improve an initial jetting property by using reduction of volatility.Type: ApplicationFiled: May 14, 2009Publication date: November 19, 2009Inventors: Mi-Kyoung Kim, Dae-Hyun Kim, Hyun-Sik Kim, Duk-Sik Ha, Dong-Chang Choi, Han-Soo Kim, Min-A Yu -
Patent number: 7615248Abstract: Provided are a method for preparing a blue-emitting BAM phosphor which includes: surface-treating phosphor particles with metal oxide nanoparticles, and a blue-emitting BAM phosphor prepared by the method. The blue-emitting BAM phosphor exhibits better dispersibility and flowability in coating slurry without undergoing a reduction in initial brightness, thereby providing less color variation at ends of a BLU lamp. The blue-emitting BAM phosphor can be directly applied in a currently available method of manufacturing a BLU lamp, and when mixed with existing red and green phosphors, can remarkably reduce color variation at ends of a lamp. Therefore, the quality of a BLU lamp for large-scale displays can be greatly improved.Type: GrantFiled: December 29, 2005Date of Patent: November 10, 2009Assignee: Daejoo Electronic Materials Co., Ltd.Inventors: Kwang-wook Choi, Chang-seok Ryoo, Do-hoon Kim, Ick-soon Kwak, Tae-hyun Kwon
-
Publication number: 20090274911Abstract: Various methods and apparatus relating to a multi-level layer (140, 440, 540, 640, 740) are disclosed.Type: ApplicationFiled: July 25, 2007Publication date: November 5, 2009Inventors: Qin Liu, Bradley Chung, John Christopher Rudin, Frank E. Glass
-
Publication number: 20090268429Abstract: A fluorescent lamp includes a glass container (204) having mercury enclosed therein, and a phosphor layer (202) formed on an inner side of the glass container (204). The phosphor layer (202) includes phosphor particles (202a) and rod-shaped bodies (202b) composed of a metal oxide and spanning between the phosphor particles. The rod-shaped bodies (202b) have a thickness of, for example, 1.5 [?m] or less. Pairs of adjacent phosphor particles may be spanned by more than one rod-shaped body.Type: ApplicationFiled: November 8, 2006Publication date: October 29, 2009Inventors: Nozomu Hashimoto, Kazuhiro Matsuo, Katsumi Itagaki, Hideki Wada, Toshihiro Terada, Tomokazu Matsuura
-
Publication number: 20090263567Abstract: A method of fabricating an opto-electrical device, the method comprising the steps: depositing, on a substrate comprising a first electrode for injecting charge carriers of a first polarity, a composition comprising a conductive or semi-conductive organic material, a solvent, and a first additive; and, depositing a second electrode for injecting charge carriers of a second polarity opposite to the first polarity, wherein the first additive is a basic additive.Type: ApplicationFiled: August 1, 2007Publication date: October 22, 2009Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Paul Wallace, Simon Goddard, Peter Lyon
-
Publication number: 20090223901Abstract: This invention relates to a dielectric barrier Xe discharge lamp comprising an UV-B phosphor. The lamp consists of a gas-tight, discharge vessel with a gas filling containing Xe or a Xe/Ne mixture and is provided with a luminescent layer, which comprises at least one luminescent material emitting in the UV-B range (280 to 320 nm). The luminescent layer comprises a Gd3+ activated phosphor according to the formulas McPO4:Gd, Lal1—XAl3(BO3)4:Gdx, and La1—xB3O6:Gdx which is eventually sensitised by Bi3+, Pr3+ or Nd3+ The advantages of such an UV-B emitting discharge lamp over fluorescent lamps based on a Hg low-pressure discharge are a high power density, 10 instant light, long lifetime, a spectral power distribution which is only determined by the phosphor blend, and an arbitrary burner design.Type: ApplicationFiled: April 19, 2005Publication date: September 10, 2009Applicant: Koninklijke Philips Electronic, N.V.Inventors: Thomas Juestel, Petra Huppertz, Detlef Uwe Wiechert, Walter Mayr, Heinrich Von Busch
-
Publication number: 20090212691Abstract: An organic light emitting diode (OLED) and a method of fabricating the same, in which an intermediate layer is formed between a first hole transport layer (HTL) and a second hole transport layer to facilitate supply of current to an emission layer (EML), thereby increasing the luminance and life span of the OLED. The OLED includes a first electrode, a hole injection layer (HIL) disposed on the first electrode, a first hole transport layer disposed on the hole injection layer, an intermediate layer disposed on the first hole transport layer, a second hole transport layer disposed on the intermediate layer, an emission layer disposed on the second hole transport layer, and a second electrode disposed on the emission layer.Type: ApplicationFiled: February 19, 2009Publication date: August 27, 2009Inventor: Nam-Choul Yang
-
Patent number: 7572479Abstract: A method and apparatus for coating the glass envelope and portions of the end caps of fluorescent light tubes in a continuous and sequential manner with a thermo-plastic material. The coating is applied by a cross head extruder through which the light tubes are sequentially fed. A vacuum applied during the coating process promotes direct and intimate contact between the coating and the light tubes. The end caps may be heated prior to coating to ensure adherence of the coating to the end caps and not to the glass envelope. Post-coating processes include cooling the coating, severing individual light tubes from the chain of sequentially coated light tubes, and readying the coated light tubes for packaging. The method is automatic, with the apparatus being automatically controlled by a control unit.Type: GrantFiled: November 14, 2003Date of Patent: August 11, 2009Assignee: Shat-R-SheildInventors: Robert J. Nolan, Mark Cannon
-
Publication number: 20090179189Abstract: The invention relates to a method for producing a layer structure in an electronic device, especially in an organic light emitting device, the method comprising a step of producing the layer structure as a composite layer structure with free charge carriers generated by charge transfer between a first material and a second material, wherein the composite layer structure is provided as a stack of at least three non-mixed sub-layers made of the first material and the second material, respectively, wherein within the stack of the at least three non-mixed sub-layers each first material sub-layer is followed by an adjacent second material sub-layer and each second material sub-layer is followed by an adjacent first material sub-layer, and wherein the first material and the second material are selected to form a host-dopant material system for the electrical doping. The invention also relates to an electronic device.Type: ApplicationFiled: October 23, 2006Publication date: July 16, 2009Applicant: NOVALED AGInventors: Ansgar Werner, Jan Blochwitz-Nimoth, Tobias Canzler
-
Publication number: 20090130385Abstract: A method of manufacturing a display device includes preparing an acceptor substrate, preparing a donor substrate having an organic layer; aligning and combining the acceptor substrate and the donor substrate, and keeping a temperature difference between the acceptor substrate and the donor substrate to transfer the organic layer to the acceptor substrate. Thus, the present invention provides a display device that can simplify a process and decrease a consumption rate of an organic material.Type: ApplicationFiled: January 8, 2008Publication date: May 21, 2009Inventors: Joo-Hyeon Lee, Chang-Woong Chu, Jin-Koo Chung, Jae-Kook Ha
-
Publication number: 20090026952Abstract: A phosphor paste and a plasma display panel using the same are provided. The phosphor paste includes a vehicle made of an organic binder and a solvent, a phosphor powder, and a thermal decomposition catalyst. The thermal decomposition catalyst mediates oxidative thermal decomposition of the organic binder. The thermal decomposition catalyst may include Zeolite and a metal oxide nanopowder with a particle size of 10 to 1,000 nm.Type: ApplicationFiled: June 19, 2008Publication date: January 29, 2009Inventor: Sang Bum AHN
-
Patent number: 7470447Abstract: Fluid discharge device and method for intermittently discharging and feeding fluid in a constant amount with high speed and high precision, the fluid exemplified by various kinds of liquids such as adhesives, solder paste, fluorescent materials, electrode materials, greases, paints, hot melts, chemicals, foods and the like in production processes in the fields of electronic components, household electrical appliances, displays, and the like. By providing a fluid supply device for supplying the fluid to two surfaces that are moved relative to each other along a direction of a gap, a continuous flow supplied from the fluid supply device is converted into an intermittent flow by utilizing a pressure change due to a change in the gap of the relatively moving surfaces, while the intermittent discharge amount per dot is controlled by the rotational speed of the fluid supply device.Type: GrantFiled: February 12, 2004Date of Patent: December 30, 2008Assignee: Panasonic CorporationInventors: Teruo Maruyama, Takashi Inoue, Ryoji Hyuga
-
Patent number: 7455733Abstract: There is provided a fluorescent material coating apparatus for a fluorescent lamp. The fluorescent material coating apparatus includes a cassette on which a plurality of glass tubes are detachably mounted, a delivery member having a delivery chamber communicating with first ends of the glass tubes, a negative pressure generating unit for allowing fluorescent solution to be drawn into the glass tubes by generating a negative pressure in the glass tubes communicating with the delivery chamber by lowering the pressure of the delivery chamber, a dry air supplying unit for supplying dry air to the delivery chamber to dry the fluorescent solution applied on inner surfaces of the glass tubes, a solution tank containing the fluorescent solution and disposed below the glass tubes mounted on the cassette, and a moving unit for allowing lower end portions of the glass tubes mounted in the delivery chamber to be dipped into the fluorescent solution contained in the solution tank.Type: GrantFiled: February 27, 2006Date of Patent: November 25, 2008Assignee: DMS Co., Ltd.Inventors: Young-Chul Lee, Dong-Gil Kim, Sung-Jung Kim, Jeon-Gu Kim, Hong-Lae Cho
-
Patent number: 7448396Abstract: An impurities elimination apparatus including a base plate, a first nozzle for removing impurities on the base plate using air suction, a glass substrate disposed on the base plate, and a second nozzle for coating the glass substrate with an organic material.Type: GrantFiled: June 15, 2005Date of Patent: November 11, 2008Assignee: LG Display Co., Ltd.Inventor: Chul Jeong
-
Publication number: 20080259610Abstract: A fluorescent paster generally comprises a light-pervious layer, a fluorescent power layer, a bottom layer and an adhesive layer. The light-pervious layer is mounted in a topmost position to emit a light beam. The fluorescent power layer is mounted under the light-pervious layer to change the color of the light beam when the light beam passes through the fluorescent power layer. The bottom layer is mounted under the fluorescent power layer. The adhesive layer is mounted under the bottom layer. As a result, the color of the light is changeable by means of the fluorescent power layer and the fluorescent paster is attachable to an article by means of the adhesive layer.Type: ApplicationFiled: July 30, 2007Publication date: October 23, 2008Inventor: Yuan Lin
-
Publication number: 20080241590Abstract: A method of coating phosphor powder with a composite oxide, and a light emitting device that employs the phosphor powder coated with the composite oxide are disclosed. The method includes mixing a silicon oxide precursor and a precursor of another oxide in water and alcohol to form a primary coating layer on a sulfide phosphor through a sol-gel reaction, heat treating the primary coating layer to form a composite oxide layer of the silicon oxide and the other oxide from the primary coating layer. The method improves moisture stability of the sulfide phosphor compared to a sulfide phosphor coated with a single silicon oxide film.Type: ApplicationFiled: March 28, 2008Publication date: October 2, 2008Applicant: SEOUL SEMICONDUCTOR CO., LTD.Inventors: Kyung Nam Kim, Tomizo Matsuoka, Sang Mi Park, Hyung Keun Lee, Mi Youn Chang
-
Publication number: 20080152946Abstract: Novel fluorene compounds having the following formula are disclosed: wherein R1-R14 and R1?-R14? are respectively H, halogen, C1-C6 alkyl, alkyloxyl or cycloalkyl. The present also discloses their method of preparation and their usage as the hole injection material or the hole transport material of an organic light emitting diode, and the light emitting diode containing the invented fluorene compounds and its preparation method.Type: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Inventors: Feng-Wen Yen, Chao-you Chiu
-
Patent number: 7368179Abstract: The present invention provides a light emitting device comprising: a light output; a light source that produces light having a wavelengths of 530 nm or less; and a wavelength transformer located between the light source and the light output, where the wavelength transformer comprises Sr1-xCaxGa2S4: yEu2+·zGa2S3, where x is 0.0001 to 1, y is a value defining sufficient Eu2+ to provide luminescent emission, and z is 0.0001 to 0.2 based on the mole amount of SrxCa1-xGa2S4, and where the wavelength transformer effectively increases the light at the light output, the light having a wavelength between 535 nm and 560 nm.Type: GrantFiled: April 13, 2004Date of Patent: May 6, 2008Assignee: Sarnoff CorporationInventors: Yongchi Tian, Diane Zaremba, Perry Niel Yocom
-
Patent number: 7300327Abstract: A method for constructing a scotopic after-glow lamp for use in an electric lamp with the scotopic lamp having a lamp wall is provided. The method comprises combining scotopic enhanced phosphors with after-glow phosphors, and layering the combined phosphors on the lamp wall with at least a portion of the after-glow phosphors being against the lamp wall and at least a portion of the scotopic phosphors being exposed to the electric arc of the lamp.Type: GrantFiled: June 15, 2005Date of Patent: November 27, 2007Inventors: Charles Bolta, Donald P. Northrop
-
Patent number: 7282848Abstract: A mercury vapor discharge fluorescent lamp is provided having a phosphor layer that has a yttria-based red emitting rare earth phosphor. The phosphor layer is prepared from an aqueous phosphor slurry that is coated onto the inner surface of the glass envelope of the lamp, then baked in a lehring oven to vaporize or decompose non-phosphor components of the slurry to leave behind the finished phosphor layer. The phosphor slurry contains a non-ionizing thickener, preferably polyethylene oxide, but does not contain any calcium carbonate or carbonate salts. The phosphor layer includes a yttria-based red emitting rare earth phosphor.Type: GrantFiled: May 22, 2003Date of Patent: October 16, 2007Assignee: General Electric CompanyInventor: Jon B. Jansma
-
Publication number: 20070159053Abstract: A slurry composition for forming a layer is provided. The slurry composition includes 100 parts by weight of a metal oxide selected from the group consisting of MgO, CaO, SrO, BaO, ZrO3, and a combination thereof; 1-200 parts by weight of a binding agent per 100 parts by weight of the metal oxide, the binding agent being selected from the group consisting of calcium phosphate (CaP), a calcium-barium-boron-based (CBB-based) oxide, a triple carbonate ((Ca, Ba, Sr)CO3), and a combination thereof; 1-10 parts by weight of a binder per 100 parts by weight of the metal oxide, the binder being selected from the group consisting of nitro cellulose, ethyl cellulose, methyl methacrylate, and a combination thereof; and 50-500 parts by weight of a solvent per 100 parts by weight of the metal oxide.Type: ApplicationFiled: December 11, 2006Publication date: July 12, 2007Inventor: Yong-Seok Park
-
Patent number: 7223353Abstract: A phosphor layer for an electroluminescent panel comprises a phosphor powder held in a binder. The binder comprises a mixture of two constituents, one of which is a drying oil or a semi-drying oil or a derivative and the other constituent is a sol-gel precursers. Examples of suitable oils are linseed oil, rape seed oil, sunflower oil and soyabean oil. Examples of suitable sol-gel precursers are tetraethyl orthosilicate, boron iso-propoxide, aluminium sec-butoxide and titanium iso-propoxide. Metal salts such as metal alkoxides, metal acetates and metal nitrates may be mixed with the sol-gel precursers.Type: GrantFiled: April 29, 2002Date of Patent: May 29, 2007Assignee: Burnel UniversityInventors: Aron Vecht, Jack Silver, Dominic Davies, Philip Titler
-
Patent number: 7052353Abstract: A method for forming a phosphor screen comprising the step of forming a phosphor layer containing a thermoplastic resin on the inner surface of a face plate, the step of pressurizing the phosphor layer being heated to plasticate the thermoplastic resin and smooth the surface of the phosphor layer, and the step of forming a metal film on the surface-smoothed phosphor layer and heating the face plate. Thermoplastic resin having a softening temperature of 50–350° C. can be used in the phosphor layer, and 0.05–50 wt % of such a thermoplastic resin in solid content ratio is contained in the layer. Heating/pressurizing conditions preferably involve temperatures of 50–350° C. and pressures of 10–10000 N/cm2. This method enhances the film forming property of a metal back layer and prevents cracks and pinholes in the metal back layer.Type: GrantFiled: May 9, 2002Date of Patent: May 30, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Takeo Ito, Tsuyoshi Oyaizu, Hajime Tanaka, Tomoko Nakazawa, Akira Mikami, Hitoshi Tabata
-
Patent number: 7008283Abstract: In a method for manufacturing a high-brightness planar lamp, a reflecting plate is first provided, and several UV light sources are placed on the reflecting plate. Next, liquid macromolecular polymer is uniformly coated on the reflecting plate and the UV light sources, and fluorescent powder is then uniformly coated on the macromolecular polymer. In another method for manufacturing a high brightness planar lamp, a reflecting plate is first provided, and several UV light sources are placed on the reflecting plate. Next, fluorescent powder and liquid macromolecular polymer are mixed up and uniformly coated on the reflecting plate and the UV light sources. A solidification procedure is then performed. The solidification ways of the mixture of fluorescent powder and macromolecular polymer includes solidification by heating and solidification by illumination of UV light.Type: GrantFiled: February 25, 2003Date of Patent: March 7, 2006Assignee: Candle Laboratory Co., Ltd.Inventors: Chih Yung Liu, De-An Chang, Sheng Chih Wan
-
Patent number: 6969292Abstract: A phosphor layer is formed efficiently in a gas discharge tube by drawing a mother material to fabricate a supporting member which is insertable in a small glass tube used for a gas discharge tube, forming a phosphor layer on the supporting member, and inserting and placing the supporting member in the small glass tube.Type: GrantFiled: January 21, 2004Date of Patent: November 29, 2005Assignee: Fujitsu LimitedInventors: Akira Tokai, Hitoshi Yamada, Manabu Ishimoto, Tsutae Shinoda
-
Publication number: 20040213900Abstract: A carrier supporting titania thereon is further caused to carry a metal compound thereon. This metal compound is hydrogen reduced in a heating atmosphere at a first treatment temperature, then oxidized in a heating atmosphere at a second treatment temperature not higher than the first treatment temperature to thereby obtain a photocatalyst. In this event, metal is released from an extremely strong reduction state and thus highly dispersed on the catalyst in the form of fine particles so that high activity of the catalyst can be obtained. Then, by purifying gas while feeding light and heat to the photocatalyst by, for example, blacklights, a volatile organic compound such as acetaldehyde can be decomposed at a high decomposition rate through cooperation between photocatalytic activity and thermal catalytic activity of the photocatalyst.Type: ApplicationFiled: February 23, 2004Publication date: October 28, 2004Inventors: Katsuyuki Nakano, Eiko Higashi, Masanori Nanri
-
Publication number: 20040213899Abstract: A method of preparing semiconductor nano crystal anatase TiO2 solution uses titanium alkoxide Ti(OR)4 as a main component in combination with chelating agents in aqueous solution. A fluorescent lamp tube is coated with the semiconductor nano crystal anatase TiO2 solution to form a photocatalytic coating fluorescent lamp capable of cleaning air. Then a baking step is carried out at a low temperature about 100-250° C. By doped anatase TiO2 with small amount about 0-1.0 wt % of precious metals complex or transition metals oxides as nano-particle on or in the anatase TiO2 nano-particle surface, the visible light photocatalysis efficiency is increased for air cleaning. By doped with small amount Eu+3 or rare earth metal ion on or in the anatase TiO2 nano-particle surface, which is a photocatalytic material acting as fluorescent agent, the fluorescent lamp has increasing brightness of when it is turned on.Type: ApplicationFiled: January 21, 2004Publication date: October 28, 2004Inventor: Wei-Hong Wang
-
Publication number: 20040206973Abstract: Provided, among other things, is a light emitting device comprising: a light output; a light source producing light including wavelengths of 530 nm or less; and a wavelength transformer located between the light source and the light output, comprising Sr1-xCaxGa2S4:yEu2+·zGa2S3, where x is 0.0001 to 1, y is a value defining sufficient Eu2+ to provide luminescent emission, and z is 0.0001 to 0.2 based on the mole amount of SrxCa1-xGa2S4, the wavelength transformer effective to increase the light at the light output having wavelength between 535 nm and 560 nm.Type: ApplicationFiled: April 13, 2004Publication date: October 21, 2004Applicants: Sarnoff Corporation, Stanley Electric Co., Ltd.Inventors: Yongchi Tian, Diane Zaremba, Perry Niel Yocom
-
Publication number: 20040086631Abstract: An ink jet printing device for manufacturing an organic electroluminescent device. The ink jet printing device includes a chamber, an inkjet unit, and a pressure adjusting unit. The chamber has a space, and a basement is provided inside the space for supporting the organic electroluminescent device. The inkjet unit has a print head, which includes print holes. The print head is set in the chamber and is used to inject ink toward a substrate of the organic electroluminescent device. The pressure adjusting unit connects to the space so as to steady the pressure of the space within a specific value. Furthermore, an ink jet printing method for manufacturing an organic electroluminescent device is also disclosed.Type: ApplicationFiled: October 22, 2003Publication date: May 6, 2004Inventors: Yu-Kai Han, Hsia-Tsai Hsiao, Pi-Chun Weng
-
Patent number: 6702638Abstract: A method of shatterproofing a fluorescent lamp having a glass envelope by extruding a polymeric coating over the lamp envelope so that it intimately embraces substantially all of the external contours of the lamp, including its glass envelope and end-ferrules thereby increasing the hoop strength of the glass envelope. The lamp is passed through an air lock into the main lumen of a crosshead which extrudes a cylinder of hot plastic that is radially drawn inward toward the lumen axis by an applied vacuum. A continuous chain of encapsulated lamps emerges from the crosshead that then may be cut apart to reveal individually completely encapsulated lamps.Type: GrantFiled: July 30, 2002Date of Patent: March 9, 2004Assignee: Custom Spectrum Lighting, LLCInventor: Paul Robert Dupont
-
Patent number: 6660184Abstract: A phosphor paste composition for plasma display panels (PDP) is provided which comprises a phosphor dispersed in an organic paste comprising a solvent, a binder, at least one dispersant comprising stearic acid, and a plasticizer. The paste compositions are very stable and have desirable screen-printing properties. In addition, the phosphor contained in the paste retains a high percentage of its initial brightness following binder burn-out.Type: GrantFiled: December 13, 2001Date of Patent: December 9, 2003Assignee: Osram Sylvania Inc.Inventors: Raj P. Singh, Robert G. Mendenhall, Diane C. Seymour
-
Publication number: 20030064149Abstract: A method of coating one or more surfaces of a micromechanical device. The coating is applied as a material dissolved in CO2. The CO2 is used a carrier solvent, with the coating being applied as a spray or in liquid form, to form a film on the surface. The CO2 may be used in supercritical form to dissolve the material.Type: ApplicationFiled: September 12, 2002Publication date: April 3, 2003Inventor: Seth A. Miller
-
Patent number: 6531074Abstract: A luminescent nanophase binder is provided for use in UV and VUV applications. The binder promotes adherence of phosphor coatings to lamp envelopes and emits visible light under UV and VUV excitation. In a preferred embodiment, the binder comprises SiO2 nanoparticles doped with terbium or terbium and yttrium. Preferably, the nanoparticles have a particle size of less than 50 nm.Type: GrantFiled: January 8, 2001Date of Patent: March 11, 2003Assignee: Osram Sylvania Inc.Inventors: Cathy Shaw Trumble, Mary Ann Johnson
-
Publication number: 20020176932Abstract: A method of forming a fluorescent screen where a pigment film and a fluorescent film are deposited on a surface of a light transmissive substrate, the method comprising: coating a pigment dispersion liquid on the surface of the light transmissive substrate to form a coated film; and forming a pigment film by drying the coated film; wherein drying of the coated film is performed under the conditions that a temperature of corner portions of the light transmissive substrate is controlled to not lower than 36° C., or that drying means which is exclusively assigned to dry the corner portions of the coated film is employed.Type: ApplicationFiled: March 21, 2002Publication date: November 28, 2002Inventor: Norihisa Nakao
-
Patent number: 6399145Abstract: A method for coating lamp tubes in which a local drying zone tracks a liquid level of the coating material at a constant time interval. The local drying zone may be a heater or air outlet that moves in coordination with the liquid level.Type: GrantFiled: July 11, 2000Date of Patent: June 4, 2002Assignee: Patent-Treuhand-Gessellschaft fuer Elektrische Gluehlampen mbHInventors: Simon Jerebic, Frank Vollkommer
-
Patent number: 6174213Abstract: Metal organic precursor compounds are dissolved in an organic solvent to form a nonaqueous liquid precursor. The liquid precursor is applied to the inner envelope surface of a fluorescent lamp and heated to form a metal oxide thin film layer. The metal oxide thin film layer may be a conductor, a protective layer or provide other functions. The films have a thickness of from 20 nm to 500 nm. A conductive layer comprising tin-antimony oxide with niobium dopant may be fabricated to have a differential resistivity profile by selecting a combination of precursor composition and annealing temperatures.Type: GrantFiled: September 1, 1999Date of Patent: January 16, 2001Assignees: Symetrix Corporation, Matsushita Electronics CorporationInventors: Carlos A. Paz de Araujo, Jolanta Celinska, Joseph D. Cuchiaro, Jeffrey W. Bacon, Larry D. McMillan, Akihiro Matsuda, Gota Kano, Yoshio Yamaguchi, Tatsuo Morita, Hideo Nagai
-
Patent number: 6001477Abstract: A method for providing an adherent, continuous, conformal, non-particulate coating of a compound of a metal or metalloid on the surface of individual phosphor particles. The method involves wetting each of the individual particles with a polymer solution including a polymer in a solvent base, the polymer being capable of chelating ions of the metal or metalloid. The particles then are dried to produce a continuous coating of the polymer on each of the individual particles. The polymer-coated phosphor particles are suspended in a solution containing ions of the metal or metalloid and having a pH of at least 9 to produce chelation of the metal or metalloid ions by the polymer coating, to produce the adherent, continuous, conformal, non-particulate, metal- or metalloid-compound coating on the particle surfaces. Also described are a method for improving lumen maintenance of a lamp, a coated phosphor powder, and a phosphor-coating composition for coating an inner surface of a lamp envelope.Type: GrantFiled: January 3, 1997Date of Patent: December 14, 1999Assignee: Osram Sylvania Inc.Inventors: Chung Nin Chau, Tracy V. Silloway, Paul W. Salvi
-
Patent number: 5945177Abstract: A process for coating an exterior of a lamp is disclosed, which comprises performing the coating in a microwave reactor by a microwave plasma CVD process and coupling microwave radiation into the microwave reactor with a microwave power greater than or equal to a power threshold value at which a plasma with reduced microwave permeability is ignited in the microwave reactor.Type: GrantFiled: December 16, 1997Date of Patent: August 31, 1999Assignee: Schott GlaswerkeInventors: Hrabanus Hack, Torsten Holdmann, Volker Paquet, Johannes Segner
-
Patent number: 5858277Abstract: An aqueous coating suspension for a fluorescent lamp comprises particles of an alkaline earth chlorofluorophosphate phosphor activated by antimony and manganese, water, at least one water soluble binder, a defoaming agent, a surface active agent and a sufficient amount of ammonium chloride for improving lamp maintenance.Type: GrantFiled: December 23, 1992Date of Patent: January 12, 1999Assignee: Osram Sylvania Inc.Inventors: Chung-Nin Chau, Steven C. Fowler, John S. Tulk, Paul W. Salvi, Tracy V. Silloway, Karen Lee
-
Patent number: 5853795Abstract: A method for fabricating a luminant for a field emission display fabricated through PVD is disclosed. The method includes the steps of: forming a ZnO:Zn luminescent thin film on a glass substrate through PVD; and forming a conductive thin film on the ZnO:Zn luminescent thin film, to thereby change the luminescence threshold, brightness and luminescent color suitable for the operation characteristics of the emitter in a predetermined range, by controlling the thickness of the luminescent layer, temperature and ambient of heat treatment of the luminant.Type: GrantFiled: May 15, 1996Date of Patent: December 29, 1998Assignee: Korea Institute of Science and TechnologyInventors: Myung Hwan Oh, Yun Hi Lee, Byeong Kwon Ju, Man Ho Song
-
Patent number: 5686134Abstract: A process and device are disclosed for coating with a suspension the inside of meandrous one-tube glass vessels with U-bends. After the introduction of a measured amount of a suspension, the vessel is axially rotated moving horizontally and is tilted, so that the legs of the one-tube glass vessel take a horizontal position between the reversal points of the tilting movement.Type: GrantFiled: July 6, 1994Date of Patent: November 11, 1997Assignee: Prolux Maschinenbau GmbHInventors: Erhard Bernicke, Jurgen Dame, Rainer Munchhausen
-
Patent number: 5624602Abstract: The maintenance of a fluorescent lamp containing terbium-activated cerium magnesium aluminate phosphor is improved by combining the phosphor with a small particle size aluminum oxide and wet-milling the phosphor/aluminum oxide mixture before applying the phosphor to the interior of a fluorescent lamp envelope.Type: GrantFiled: December 30, 1994Date of Patent: April 29, 1997Assignee: Osram Sylvania Inc.Inventors: Joseph J. Lenox, Richard I. Manahan
-
Patent number: 5614783Abstract: A fluorescent lamp includes either laminated layers including a non-fluorescent substance layer, and a phosphor layer, or a layer including a mixture of the non-fluorescent substance, and a phosphor, wherein the non-fluorescent substance is a rare earth oxide of either yttrium, gadolinium, or lanthanum. The rare earth oxide is fired to at least 1000.degree. C. thereby providing the lamp with a higher luminous flux maintaining ratio.Type: GrantFiled: January 31, 1995Date of Patent: March 25, 1997Assignee: Kasei Optonix, Ltd.Inventor: Shigeo Fujino
-
Patent number: 5560958Abstract: A method and apparatus for sequentially coating fluorescent lamps with a protective coating. The lamps are advanced continuously through coating apparatus which prepares the surfaces of the lamps for coating, then dips the lamps in a bath of liquid coating material, and subsequently cures the liquid coating material. The lamps may be labeled prior to coating, such that the coating provides tamper resistance for the labeling, in addition to containment of shattered glass and lamp contents in the event of breakage of the lamp.Type: GrantFiled: June 1, 1995Date of Patent: October 1, 1996Assignee: Trojan, Inc.Inventors: Edward F. Duzyk, Wallace E. Fizer
-
Patent number: 5496582Abstract: A process for producing an electroluminescent device comprising a luminescent layer located between two electrodes formed on an insulating substrate wherein the luminescent layer is composed of a host material to which a luminescent center element is added and the host material is composed of an alkaline earth metal element of the Group II of the Periodic Table and an element of the Group VI, which process comprises forming the host material by chemical vapor deposition to react a gas of an organic compound containing the alkaline earth metal element of the Group II and a gas of a compound containing the element of the Group VI in a reactor, the gas of the organic compound containing the alkaline earth metal element of the Group II being formed from a cyclopentadienyl compound. By this process, EL devices can be produced with high reproducibility.Type: GrantFiled: August 30, 1994Date of Patent: March 5, 1996Assignee: Nippondenso Co., Ltd.Inventors: Atsushi Mizutani, Masayuki Katayama, Nobuei Ito, Tadashi Hattori
-
Patent number: 5494846Abstract: Oxygen ions are partially implanted into a semiconductor substrate 1 to form an oxygen ion implantation area. Then, a trench 2 surrounding the oxygen ion implantation area is formed in the semiconductor substrate 1 so as to remove the outer peripheral portion of the oxygen ion implantation area. Then, the semiconductor substrate 1 are heat treated to turn the oxygen ion implantation area into a buried oxide film 4 which is stable. Then, an insulating film 3 is buried into the trench 2.Type: GrantFiled: December 13, 1994Date of Patent: February 27, 1996Assignee: NEC CorporationInventor: Toru Yamazaki