Fluorescent Type Or Mosaic Electrode Making Patents (Class 445/52)
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Patent number: 8900027Abstract: A lamp including a first and second lamp substrate with a first and second external electrode, respectively, and a first and second internal phosphor coating, respectively, wherein the first phosphor coating is a phosphor monolayer. A method of manufacturing a lamp, including screen-printing a phosphor monolayer on a first lamp substrate; screen-printing a phosphor layer on a second lamp substrate; joining the phosphor-coated faces of the first and second lamp substrates together with a seal; and joining a first and second electrode to the uncoupled exterior faces of the first and second lamp substrates, respectively.Type: GrantFiled: May 18, 2012Date of Patent: December 2, 2014Assignee: Eden Park Illumination, Inc.Inventors: Jeffry M Bulson, Jay E Pogemiller, David Blair DeHaven, Walter E Mason, Cyrus M Herring, Sung-Jin Park
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Patent number: 7931518Abstract: The present invention provides a process for preparing a light transmissive electromagnetic wave shielding material having an excellent light transmissive property, an excellent electromagnetic wave shielding property, an excellent appearance property and an excellent legibility by a simple method. A process for the preparation of a light transmissive electromagnetic wave shielding material comprising; (A1) printing a pretreatment agent for electroless plating comprising a noble metal compound and a mixture of silane coupling agent and azole compound or a reaction product thereof in a mesh pattern on a transparent substrate 11 to form a mesh-patterned pretreatment layer 12, and (A2) subjecting the pretreatment layer 12 to electroless plating to form a mesh-patterned metal conductive layer 13 on the pretreatment layer 12.Type: GrantFiled: August 3, 2007Date of Patent: April 26, 2011Assignee: Bridgestone CorporationInventors: Hidefumi Kotsubo, Tatsuya Funaki, Kiyomi Sasaki
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Publication number: 20100253207Abstract: The invention relates to a flat lamp (1) transmitting radiation in the ultraviolet, known as a UV lamp, comprising: first and second flat dielectric walls (2, 3) that are facing each other, kept substantially parallel, and sealed, to one another, thus defining an internal space (10) filled with gas (7), the first dielectric wall at least being made of a material that transmits said UV radiation; electrodes composed of first and second electrodes (4, 5), having different given potentials, for a perpendicular discharge between the walls, the first electrode at least being based on a layer arranged in order to allow overall UV transmission; and an emitting gas or a phosphor coating (6) on one main inner face (22, 32) of the first and/or the second dielectric wall (2, 3), the phosphor emitting said UV radiation by being excited by the gas. The invention also relates to the uses thereof and to the manufacture thereof.Type: ApplicationFiled: April 17, 2008Publication date: October 7, 2010Applicant: SAINT-GOBAIN GLASS FRANCEInventors: Laurent Joulaud, Guillaume Auday, Didier Duron, Jingwei Zhang
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Patent number: 7736210Abstract: A microscale vacuum electronic device (10) provides for a mechanical modulation of cathode (12) position with respect to the anode position, the anode electrically biased with respect to the cathode and held in an evacuated housing with the cathode, allowing improved high-frequency modulation of an electron beam (24) useful for vacuum electronic devices such as klystrons, klystrodes, and high frequency triodes.Type: GrantFiled: September 12, 2007Date of Patent: June 15, 2010Assignee: Wisconsin Alumni Research FoundationInventor: Robert H. Blick
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Publication number: 20100117523Abstract: The subject of the invention is a substrate for an organic light-emitting device (10) bearing a discontinuous electrode (2a to 2?c) having a metallic functional layer having an intrinsic electrical conductivity property, between a contact layer and an overlayer, the electrode having a surface resistance equal to or less than 5 ?/? for a functional layer thickness of less than 100 nm, the electrode being in the form of at least one row of electrode zones, each electrode zone having a first dimension (l) of at least 3 cm in the direction (X) of said row, the electrode zones of each row being spaced apart by what is called the intra-row distance (d1), this being equal to or less than 0.5 mm. The subject of the invention is also an organic light-emitting device (10) incorporating this electrode and the fabrication of this electrode and of this device.Type: ApplicationFiled: February 25, 2008Publication date: May 13, 2010Applicant: Saint-Gobain Glass FranceInventor: Svetoslav Tchakarov
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Publication number: 20100093248Abstract: A photosensitive conductive paste for electrode formation containing conductive metal particles, a glass binder, a monomer, a photoinitiator, an organic polymer binder, an organic medium and an ultraviolet absorber which does not substantially change reflectance of a paste in a visible light range.Type: ApplicationFiled: December 17, 2009Publication date: April 15, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Atsuhiko Sato, Terry Roland Suess
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Publication number: 20100013371Abstract: An electrode member for a cold cathode fluorescent lamp which is excellent in sputtering resistance and a discharge property, and which is excellent in productivity, a method of producing the electrode member, and a cold cathode fluorescent lamp are provided. A cold cathode fluorescent lamp 1 includes a glass tube 20 and electrode members 10 arranged in the tube 20. Each of the electrode members 10 includes an electrode main body portion 11 having a bottomed tubular shape and a lead portion 12 arranged at a sealing portion of the glass tube 20, and the portions 11 and 12 are integrally formed. The electrode members 10 contain at least one type of element selected from Ti, Hf, Zr, V, Nb, Mo, W, Sr, Ba, B, Th, Al, Y, Mg, In, Ca, Sc, Ga, Ge, Ag, Rh, Ta, and rare earth elements (other than Y and Sc) in a total amount in the range of 0.01 to 5.0 percent by mass, and the balance composed of a Fe—Ni alloy and impurities.Type: ApplicationFiled: November 22, 2007Publication date: January 21, 2010Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD, SUMIDEN FINE CONDUCTORS CO., LTDInventors: Yoshihiro Nakai, Kazuo Yamazaki
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Publication number: 20090322216Abstract: A display device includes: a plurality of first pixel electrodes which are arranged in a first direction and a second direction intersecting the first direction; a plurality of second pixel electrodes which are arranged in the first and second directions; a counter electrode which is formed to be opposed to the plurality of first pixel electrodes and the plurality of second pixel electrodes; a first power supply line which electrically connects the plurality of first pixel electrodes; and a second power supply line which electrically connects the plurality of second pixel electrodes. One or more pixels are formed to correspond to the respective pixel electrodes of the plurality of first pixel electrodes and the plurality of second pixel electrodes.Type: ApplicationFiled: May 27, 2009Publication date: December 31, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Hirokazu YANAGIHARA
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Publication number: 20090298377Abstract: All lights generated in an organic compound layer are not taken out towards a TFT from a cathode as a transparent electrode. For instance, the light is emitted in a lateral direction (direction parallel to the substrate surface) but the light emitted in the lateral direction is not taken out resultantly, which leads to a loss. Therefore, a light emitting device structured so as to increase the amount of light taken out in a certain direction is provided as well as a method of manufacturing this light emitting device. As a result of etching treatment, an upper edge portion of an insulator (19) is curved to have a radius of curvature, a slope is formed along the curved face while partially exposing layers (18c and 18d) of a first electrode, and a layer (18b) of the first electrode is exposed in a region that serves as a light emitting region.Type: ApplicationFiled: August 10, 2009Publication date: December 3, 2009Inventors: Shunpei Yamazaki, Satoshi Seo, Hideaki Kuwabara
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Publication number: 20090167150Abstract: Provided are a field emission surface light source apparatus and a method of fabricating the field emission surface light source apparatus. The field emission surface light source apparatus includes a base substrate and a transparent substrate facing each other, a plurality of gate electrodes formed on an upper surface of the base substrate, an insulating layer formed on the upper surface of the base substrate to cover the gate electrodes, a plurality of emitters formed on an upper surface of the insulating layer, and a fluorescent layer formed on a lower surface of the transparent substrate. The fluorescent layer faces the emitters.Type: ApplicationFiled: September 11, 2008Publication date: July 2, 2009Inventors: Ho-Suk Kang, Deuk-Seok Chung, Min-Jong Bae, Yong-Chul Kim
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Patent number: 7513814Abstract: An effective voltage V? effectively applied to a gap 7 during an “activation step” is controlled to a desired value. In the “activation step”, a voltage is repeatedly applied between a first electroconductive film 4a and a second electroconductive film 4b while controlling voltages outputted from a voltage source 51 so that a value ?effect becomes a desired value.Type: GrantFiled: June 23, 2005Date of Patent: April 7, 2009Assignee: Canon Kabushiki KaishaInventors: Tamaki Kobayashi, Keisuke Yamamoto, Hisashi Sakata
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Publication number: 20080284335Abstract: A discharge device for operation in a gas at a prescribed pressure includes cathode that is at least partially enclosed by a dielectric layer. The dielectric layer is at least partially enclosed by an anode. The dielectric and the anode have one or more aligned penetrations therein. The cathode may be hollow to allow a cooling fluid to circulate inside the cathode to cool the lamp.Type: ApplicationFiled: May 15, 2008Publication date: November 20, 2008Applicant: Ultraviolet Sciences, Inc.Inventors: Richard May, James Randall Cooper
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Publication number: 20080238306Abstract: A display device manufacturing method including arraying pixels 20 comprising plural sub-pixels with different light-emitting colors in two intersecting directions on a flexible substrate 12 by patterning plural sub-pixels 14, 16, 18 with different light-emitting colors onto the flexible substrate 12, wherein patterning of the sub-pixels is performed such that from the two directions of pixel array, the plural sub-pixels with different light-emitting colors are arrayed within the pixels in a rows along the direction X with the smaller substrate dimensional change ratio.Type: ApplicationFiled: March 24, 2008Publication date: October 2, 2008Inventor: Toshiro TAKAHASHI
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Publication number: 20080224606Abstract: An organic EL light emitting device, in which a plurality of divided light emitting segments are connected in series, is efficiently manufactured without separate coating of organic EL light emitting layers with the use of a vapor-deposition mask. Conductor parts 5 are respectively formed on first electrodes 2b and 2c in boundary parts of adjacent light emitting segments a, b and c. Organic light emitting layers 3a to 3c and second electrode 4a to 4c are respectively stacked on each of the first electrode 2a to 2c. The conductor part 5 has a function for electrically connecting the first electrodes and the second electrodes in the adjacent light emitting segments, whereby the light emitting segments are connected in series.Type: ApplicationFiled: March 14, 2008Publication date: September 18, 2008Applicant: YAMAGATA PROMOTIONAL ORGANIZATION FOR INDUSTRIAL TECHNOLOGYInventors: Takashi Kawai, Joji Suzuki
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Publication number: 20080203914Abstract: A plasma display panel and a method for manufacturing the same, which are capable of achieving a reduction in the number of manufacturing processes and a reduction in manufacturing costs, are disclosed. The plasma display panel includes a first substrate including a first electrode, and a second substrate arranged to face the first substrate. The second substrate includes a second electrode arranged to intersect with the first electrode. At least one of the first and second electrodes include a powder mixture comprising Ag powder, and metal powder of at least one selected from a group consisting of Li, K, Ba, Ca, Na, Mg, Al, Zn, Fe, Cd, Co, Ni, Sn, Pb, Cu, Hg, Pt, and Au, and mixed with the Ag powder in a volume ratio of 0.1 to 50 mol % with respect to the Ag powder.Type: ApplicationFiled: February 25, 2008Publication date: August 28, 2008Applicant: LG ELECTRONICS INC.Inventors: Won Ki CHO, Min Soo PARK, Nam Seok KANG, Je Seok KIM, Byung Gil RYU
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Publication number: 20080055509Abstract: A color backlight device and fabrication method thereof is provided. A surface conduction emitter display with more than one color serves as the color backlight device. The color backlight device can be used in a liquid crystal display (LCD) to obviate the use of a color filter. The invention also provides a color display control method of the LCD and a pixel arrangement method of the color backlight device.Type: ApplicationFiled: September 4, 2007Publication date: March 6, 2008Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chao-Kai Cheng, Yuh-Zheng Lee, Jih-Fon Huang, Chieh-Yi Huang, Wan-Wen Chiu
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Publication number: 20070228923Abstract: Illumination device has a plurality of light emitting units, each with light emitting element and first fluorescent material region provided at a light emitting side of the light emitting element. A plurality of second fluorescent material regions are provided at the light emitting sides of respective light emitting units. Second fluorescent material regions having the same emission conversion property are respectively provided at the light emitting side of at least one light emitting unit having the same emission property among the plurality of light emitting units.Type: ApplicationFiled: February 26, 2007Publication date: October 4, 2007Applicant: Sanyo Electric Co., Ltd.Inventors: Seiichi Tokunaga, Tatsuya Kunisato, Takenori Goto, Masayuki Hata
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Patent number: 7244159Abstract: A method for producing an electromagnetic-shielding transparent window member including a transparent film and a patterned conductor disposed thereon includes the steps of applying a resin coating material containing a catalyst for electroless plating to the transparent film to form a patterned resin having the same pattern as the patterned conductor to be formed; and depositing a conductive material only on the patterned resin by electroless plating to form the patterned conductor.Type: GrantFiled: April 12, 2005Date of Patent: July 17, 2007Assignee: Bridgestone CorporationInventor: Hidefumi Kotsubo
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Patent number: 7169002Abstract: For manufacturing a high-pressure discharge lamp, a tungsten electrode is welded to a molybdenum foil by bringing a shaft of tungsten electrode into close contact with the molybdenum foil, and by irradiating a laser light, having a metal melting wavelength, to a junction of the molybdenum foil with the tungsten electrode from a location closer to the molybdenum foil to melt both the molybdenum foil and the shaft of the tungsten electrode for bonding.Type: GrantFiled: June 4, 2004Date of Patent: January 30, 2007Assignee: NEC CorporationInventor: Norimasa Mizobe
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Patent number: 7004812Abstract: A display member, particularly a plasma display member, can be produced by applying a past which includes a urethane compound and inorganic fine particles onto a substrate and then firing the paste. The display member has a post-firing pattern without any defect.Type: GrantFiled: May 22, 2001Date of Patent: February 28, 2006Assignee: Toray Industries, Inc.Inventors: Hiroko Uegaki, Norikazu Tabata, Takaki Masaki, Hiromitsu Takahashi, Akihiko Tanaka, Mitsuyo Hashimoto
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Patent number: 6821651Abstract: A novel red fluorescent material of formula (I) of the present invention has an improved thermostability, and an organic electroluminescent device containing the fluorescent material of formula (I) can provide color ranging from orange to deep red.Type: GrantFiled: May 19, 2003Date of Patent: November 23, 2004Assignee: Nessdisplay Co., Ltd.Inventors: Ki-Jong Han, Ha-Keun Hwang, Dae-Seok Jun, Ji-Hwan Keum, Young-Kyoo Kim
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Patent number: 6769947Abstract: An electrode E is manufactured through a series of steps that lend themselves to implementation on a machine tool. Electrode components 100, 158, 190 are joined or welded to other electrode components 62, 100, 158 and then cut to length from a continuous supply of material. Windings of a coil 170 with a relatively narrow inner diameter 174 are opened in a rotating step so that the coil can tightly engage a component 158 having a larger outer diameter 178.Type: GrantFiled: June 27, 2000Date of Patent: August 3, 2004Assignee: General Electric CompanyInventors: Glenn H. Kuenzler, Edward J. Balaschak
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Patent number: 6726519Abstract: The object of the present invention is to provide a phosphor ink applying device that can apply phosphor ink in a plurality of lines to an intricately-shaped surface of a back panel of a PDP while preventing phosphor colors mixing. A valve is provided for the aperture of each nozzle of the phosphor ink applying device and the opening and closing of each valve is controlled according to the shape of the portion of the surface to which ink is to be applied. In this way, mixing of colors can be prevented on an intricately-shaped back panel such as that with auxiliary barrier ribs.Type: GrantFiled: November 22, 2002Date of Patent: April 27, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shigeo Suzuki, Hiroyuki Kawamura, Keisuke Sumida, Nobuyuki Kirihara
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Publication number: 20040014392Abstract: A novel red fluorescent material of formula (I) of the present invention has an improved thermostability, and an organic electroluminescent device containing the fluorescent material of formula (I) can provide color ranging from orange to deep red.Type: ApplicationFiled: May 19, 2003Publication date: January 22, 2004Inventors: Ki-Jong Han, Ha-Keun Hwang, Dae-Seok Jun, Ji-Hwan Keum, Young-Kyoo Kim
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Patent number: 6596141Abstract: A black matrix material for increasing resolution and contrast of field emission displays is disclosed. The black matrix material is preferably deposited by electrophoresis in the interstitial regions between phosphor pixels of the faceplate. By this technique, high resolution and/or small surface area field emission displays may be manufactured. The black matrix material does not brown when subjected to the conditions associated with the manufacture of field emission displays, is chemically inert and remains stable under vacuum conditions and electron bombardment. The black matrix material is selected from boron carbide, silicon carbide, tungsten carbide, vanadium carbide and mixtures thereof.Type: GrantFiled: May 1, 2001Date of Patent: July 22, 2003Assignee: Micron Technology, Inc.Inventor: Robert T. Rasmussen
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Patent number: 6533849Abstract: An neutral electroless gold plating method that minimises “black band” corrosion problem in the final product. The electroless gold plating solution is provided at neutral pH in the presence of a reducing agent, a complexing agent and an accelerator to allow a gold layer of the desired thickness to be plated under manufacturing conditions The gold layer produced thereof has good bondability and solderability.Type: GrantFiled: November 27, 2000Date of Patent: March 18, 2003Assignee: Gul Technologies Singapore LTDInventor: Jing Li Fang
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Patent number: 6524154Abstract: A high resolution field emission display includes a faceplate and a baseplate. The faceplate includes a transparent viewing layer, a transparent conductive layer formed on the transparent viewing layer and intersecting stripes of light-absorbing, opaque insulating material formed on the transparent conductive layer. The insulating material defines openings less than one hundred microns wide between the intersecting stripes. The faceplate also includes a plurality of localized regions of cathodoluminescent material, each formed in one of the openings. The cathodoluminescent material includes a metal oxide providing reduced resistivity in the cathodoluminescent material. Significantly, the reduced resistivity of the cathodoluminescent material together with the focusing effect of the insulating material provide increased acuity in luminous images formed on the faceplate.Type: GrantFiled: May 16, 2002Date of Patent: February 25, 2003Assignee: Micron Technology, Inc.Inventors: Zhongyi Xia, Jimmy J. Browning, Charles M. Watkins, David A. Cathey
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Patent number: 6472110Abstract: The invention is for a process for manufacturing a liquid crystal display element for use in a color display using resist materials. The process comprises forming a transparent conductive film on one side of a transparent substrate; patterning the transparent conductive film by coating with a colored positive resist followed by exposure and development, coating a black-colored negative resist onto the transparent film; forming black stripes by subjecting the negative resist to exposure from the back side of the transparent substrate and development of the negative resist.Type: GrantFiled: September 17, 1996Date of Patent: October 29, 2002Assignee: Shipley Company, L.L.C.Inventors: Shigeki Nakano, Kenji Takano, Akira Awaji, Takeshi Masuyama
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Patent number: 6465951Abstract: A method for forming an electroluminescent lamp unit. A multi-layer sheet form electroluminescent lamp, the multi-layer sheet form lamp includes a pair of sheet-form conductive layers, one of which is transparent for transmitting light emitted from the particles, an electroluminescent sheet-form layer disposed between the pair of sheet-form conductive layers and having electroluminescent particles, and a carrier substrate for supporting the pair of sheet-form conductive layers and electroluminescent sheet-form layer. The multi-layer sheet form lamp is heated at a temperature sufficient for maintaining the operational integrity of said carrier substrate and said thermoplastic layers. The multi-layer sheet form lamp is them formed into a desired three-dimensional shape.Type: GrantFiled: May 1, 2000Date of Patent: October 15, 2002Assignee: Durel CorporationInventors: Robert J. Krafcik, Douglas T. Wheeler, Walter J. Paciorek, Ralph McGuigan, Rodney T. Eckersley, Dee Lynn Johnson, Harold T. Munson
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Patent number: 6406927Abstract: A method for fabricating row lines over a field emission array employs only two mask steps to define row lines and pixel openings. A layer of conductive material is disposed over a substantially planarized surface of a grid of semiconductive material and a layer of passivation material is disposed over the layer of conductive material. Row lines and pixel openings may be formed through the passivation and conductive layers by use of a first mask. The row lines may be further defined by using a second mask to remove semiconductive material of the grid. Alternatively, a first mask may be used to fully define row lines from the layers of passivation, conductive, and semiconductive material, while a second mask may be used to define pixel openings through the layers of passivation and conductive material. Field emission arrays fabricated by such methods are also disclosed.Type: GrantFiled: August 30, 2001Date of Patent: June 18, 2002Assignee: Micron Technology, Inc.Inventor: Ammar Derraa
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Patent number: 6387718Abstract: A method for fabricating field emission arrays employs a single mask to define emitter tips, their corresponding resistors, and, optionally, conductive lines. One or more material layers from which the emitter tips and resistors will be defined are formed over and laterally adjacent substantially parallel conductive lines. The exposed surface of the layer or layers of emitter tip and resistor material or materials may be planarized. The emitter tips and underlying resistors are then defined. Substantially longitudinal center portions of the conductive lines may be exposed between adjacent lines of emitter tips, with at least a lateral edge portion of each conductive line being shielded by material that remains following the formation of the emitter tips and resistors. The exposed portions of the conductive lines may be removed in order to define conductive traces. Field emission arrays and display devices fabricated by such methods are also disclosed.Type: GrantFiled: August 29, 2001Date of Patent: May 14, 2002Assignee: Micron Technology, Inc.Inventor: Ammar Derraa
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Patent number: 6224730Abstract: A black matrix material for increasing resolution and contrast of field emission displays is disclosed. The black matrix material is preferably deposited by electrophoresis in the interstitial regions between phosphor pixels of the faceplate. By this technique, high resolution and/or small surface area field emission displays may be manufactured. The black matrix material does not brown when subjected to the conditions associated with the manufacture of field emission displays, is chemically inert and remains stable under vacuum conditions and electron bombardment. The black matrix material is selected from boron carbide, silicon carbide, tungsten carbide, vanadium carbide and mixtures thereof.Type: GrantFiled: March 31, 2000Date of Patent: May 1, 2001Assignee: Micron Technology, Inc.Inventor: Robert T. Rasmussen
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Patent number: 6194826Abstract: Disclosed are a process for preparing a phosphor pattern of the present invention comprises the steps of: (I) forming a phosphor-containing photosensitive resin composition layer (A) on a substrate having unevenness, (II) irradiating a scattered light to the layer (A) imagewisely, (III) developing the layer (A) by removing the portion to which the scattered light is imagewisely irradiated to form a pattern, and (IV) calcinating the formed pattern to remove an unnecessary portion from the pattern formed in the step (III) to form a phosphor pattern, a phosphor pattern produced by the above process and a back plate for the plasma display panel provided with the phosphor pattern on a substrate for a plasma display panel.Type: GrantFiled: March 11, 1998Date of Patent: February 27, 2001Assignee: Hitachi Chemical Co., Ltd.Inventors: Kazuya Satou, Hiroyuki Tanaka, Takeshi Nojiri, Naoki Kimura, Toranosuke Ashizawa, Seiji Tai, Ikuo Mukai, Seikichi Tanno
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Patent number: 6135841Abstract: A method for fabricating a pixel assembly on a faceplate of a display device, such as a field-emission display device. In one embodiment of the present invention, an application device is aligned over a pixel assembly on the faceplate. The present invention dispenses a specific amount of a substance into the pixel assembly such that the substance is dispensed primarily into the pixel assembly and such that the substance is not substantially dispensed outside of the pixel assembly. The present invention dispenses the substance into the pixel assembly such that the substance is not dispensed on a top surface of a matrix structure, where the matrix structure separates rows and columns of adjacent pixel assemblies. In one embodiment, the substance is dispensed into the pixel assembly from a printer head (e.g., an ink-jet printer head) adapted to dispense the substance.Type: GrantFiled: August 24, 1998Date of Patent: October 24, 2000Assignee: Candescent Technologies CorporationInventor: Bob L. Mackey
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Patent number: 6068750Abstract: A black matrix material for increasing resolution and contrast of field emission displays is disclosed. The black matrix material is preferably deposited by electrophoresis in the interstitial regions between phosphor pixels of the faceplate. By this technique, high resolution and/or small surface area field emission displays may be manufactured. The black matrix material does not brown when subjected to the conditions associated with the manufacture of field emission displays, is chemically inert and remains stable under vacuum conditions and electron bombardment. The black matrix material is selected from boron carbide, silicon carbide, tungsten carbide, vanadium carbide and mixtures thereof.Type: GrantFiled: January 19, 1999Date of Patent: May 30, 2000Assignee: Micron Technology, Inc.Inventor: Robert T. Rasmussen
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Patent number: 6039622Abstract: A method of forming barrier ribs of a display panel includes the steps of forming a layer of a dielectric paste containing a powdery component and a binder component as a layer of a barrier rib material in a predetermined thickness on a substrate, forming a mask pattern on the dielectric paste layer, jetting a cutting medium onto the dielectric paste layer through the mask pattern to partially cut the dielectric paste layer to thereby form a cut barrier rib layer, and sintering the cut barrier rib layer to make barrier ribs, wherein, prior to forming the mask pattern, a bind film is formed for fixing the powdery component in a free state on the surface of the dielectric paste layer.Type: GrantFiled: July 8, 1997Date of Patent: March 21, 2000Assignee: Fujitsu LimitedInventors: Tadayoshi Kosaka, Osamu Toyoda, Fumihiro Namiki
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Patent number: 6030269Abstract: A multi-level conductive matrix structure for separating rows and columns of sub-pixels on the faceplate of a flat panel display device. In one embodiment, the present invention is formed partially of a first plurality of conductive ridges which are disposed on the faceplate between respective adjacent rows of sub-pixel regions. The present invention is further formed of a second plurality of conductive ridges which are orthogonally oriented with respect to and integral with the first plurality of conductive ridges such that a matrix structure is formed. In the conductive matrix of the present invention, the second plurality of conductive ridges have a height which is greater than the height of the first plurality of conductive ridges such that a multi-level conductive matrix is formed.Type: GrantFiled: May 26, 1998Date of Patent: February 29, 2000Assignee: Candescent Technologies CorporationInventor: Paul M. Drumm
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Patent number: 6015326Abstract: An electron field-emission display comprises one or more display cell structures, each having a field-emission cathode and an anode comprising at least one of several cathodoluminescent phosphors disclosed which are stimulable by electrons of very low energy. The display cell structures may also have gate elements for controlling electron current flowing from cathode to anode when suitable electrical bias voltages are applied. A preferred fabrication process integrates an etch stop with an in situ phosphor formation process. The etch stop precisely defines the depth of an opening in the display cell structure.Type: GrantFiled: July 28, 1997Date of Patent: January 18, 2000Assignee: Advanced Vision Technologies,Inc.Inventor: Michael D Potter
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Patent number: 5994008Abstract: The present invention relates to a composition for forming a fluorescent film for a display and a method of forming a fluorescent film for forming a display surface of a display unit. The composition for forming a fluorescent film for a display has an aqueous medium in which photosensitive resin having a styryl pyridium photosensitive group having an internal salt structure and a fluorescent material which easily reacts with acid are dispersed. The composition is applied to the display surface of a display unit so that a fluorescent layer is formed. Then, the fluorescent material layer is developed to form the fluorescent material layer into a predetermined pattern, and then the fluorescent material layer formed into the predetermined pattern is baked so that a fluorescent film is formed.Type: GrantFiled: April 18, 1997Date of Patent: November 30, 1999Assignee: Futaba Denshi Kogyo K.K.Inventors: Yukio Ogawa, Yoshihisa Yonezawa, Katsutoshi Kougo, Kazuyoshi Ishikawa, Shigeo Itoh, Tetsuaki Tochizawa, Yasuo Kuniyoshi, Toru Shibuya, Hideo Kikuchi
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Patent number: 5911616Abstract: A computer image display device includes a light transparent glass anode plate (10) spaced from a cathode substrate (12) which has a plurality of microtips (14). Plate (10) has an inside surface (25) which is contoured with an array of prisms (36) having equal sides (58, 59) that converge rearwardly toward apexes (38) of peaks (36). Apexes (38) are covered with light absorbing material (47), then covered at anode comb forming regions (51, 52, 53) with conductive material (48). Different color luminescing phosphors (24a, 24b, 24c) are applied over the respective anode combs (51, 52, 53). Sides (58, 59) direct ambient light toward apexes (38) for absorption by material (47). Light emitted by phosphors (24a, 24b, 24c) is directed by valleys (60) toward outside surface (35) of plate (10).Type: GrantFiled: June 7, 1995Date of Patent: June 15, 1999Assignee: Texas Instruments IncorporatedInventors: Jules D. Levine, Chi-Cheong Shen, Bruce E. Gnade
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Patent number: 5871383Abstract: A grooved anode plate 40 for use in a field emission flat panel display device comprises a transparent planar substrate 42 having a plurality of electrically conductive, parallel stripes 46 comprising the anode electrode of the device, which are covered by phosphors 48.sub.R, 48.sub.G and 48.sub.B. In one embodiment, grooves 50, having generally straight sidewalls, are formed in the upper surface of planar substrate 42 at the interstices of conductors 46. In a second embodiment, grooves 50', which provide a substantial undercutting of the material of substrate 42' adjacent the edges of conductors 46', are formed in the upper surface of planar substrate 42' at the interstices of conductors 46'. A substantially opaque, electrically insulating material 52 is affixed to substrate 42 in the grooves 50 formed between conductors 46, acting as a barrier to the passage of ambient light into and out of the device.Type: GrantFiled: June 7, 1995Date of Patent: February 16, 1999Assignee: Texas Instruments IncorporatedInventors: Jules D. Levine, Chi-Cheong Shen, Bruce E. Gnade
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Patent number: 5830028Abstract: In a process for making an EL lamp, a rear electrode is roll coated on a temporary substrate, followed by successive roll coatings of a dielectric layer and a phosphor layer. A transparent, conductive layer on a transparent substrate is laminated to the phosphor layer layer and the temporary substrate is removed. The layers are applied from a slurry or ink and bladed to a uniform thickness across the width of the temporary substrate. The process can be continuous using rolls of material for the temporary substrate. The length of a lamp is limited by the length of the temporary substrate. The width of the lamp is determined by the size of the apparatus used to apply and to spread the layers.Type: GrantFiled: June 2, 1997Date of Patent: November 3, 1998Assignee: Durel CorporationInventors: Charles I. Zovko, Rodney T. Eckersley
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Patent number: 5785570Abstract: A method of fabricating an anode of a flat display screen that includes at least three series of alternated parallel strips of anode conductors is available. For each series of anode conductor strips, there is a single electrically connection pad, each pad being accessible through conductive paths from a same surface level of the anode.Type: GrantFiled: June 24, 1996Date of Patent: July 28, 1998Assignee: Pixtech S.A.Inventor: Marie-Dominique Bruni
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Patent number: 5772485Abstract: An emitter structure 12 for use in a field emission display device comprises a ballast layer 17 overlying an electrically conductive coating 16 (cathode electrode), which is itself formed on an electrically insulating substrate 18. A gate electrode comprises a coating of an electrically conductive material 22 which is deposited on an insulating layer 20. Cone-shaped microtips 14 formed within apertures 34 through conductive layer 22 and insulating layer 20. In the present invention, insulating layer 20 comprises a dielectric material capable of desorbing at least ten atomic percent hydrogen, which may illustratively comprise hydrogen silsesquioxane (HSQ). HSQ is an abundant source of hydrogen which keeps deleterious oxides from forming on microtip emitters 14. HSQ also reduces the capacitance formed by cathode electrode 16 and gate electrode 22, since its relative dielectric constant is less than 3.5.Type: GrantFiled: March 20, 1997Date of Patent: June 30, 1998Assignee: Texas Instruments IncorporatedInventors: Shin-Puu Jeng, Bruce E. Gnade
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Patent number: 5762527Abstract: A high luminescence display, and methods for making such a display, are described. A faceplate for a display device having a glass face is provided, having phosphor elements on the glass face. There are reflective elements, on the glass face and adjacent to the phosphor elements, with surfaces angled toward the phosphor elements, whereby light emitted from the phosphor elements reflects off the reflective elements and travels through the glass face. The reflective elements may be formed of, for example, aluminum, and be directly adjacent to the phosphor, or offset from it.Type: GrantFiled: May 5, 1997Date of Patent: June 9, 1998Assignee: Industrial Technology Research InstituteInventors: David Nan-Chou Liu, Jammy Chin-Ming Huang, Jin-Yuh Lu
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Patent number: 5742864Abstract: An exposure apparatus includes a light source a range gauge, which refracts the light emitted from the light source at a fixed angle and a filter gauge that projects the light passing through the range gauge in different amounts to the circumference and center of the panel. The exposure further includes a reflection member fixed outside the panel which re-directs the light that passes through the panel so that it can be used again for exposure.Type: GrantFiled: July 3, 1996Date of Patent: April 21, 1998Assignee: Samsung Display Devices Co., Ltd.Inventor: Jongseop Kwack
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Patent number: 5725407Abstract: A process is described for the manufacture of a luminescent screen that eliminates image distorting or crosstalk effects resulting from secondary and back-scattered electrons that end up in adjoining sub-pixels. An unusually thick (ca. 70 microns) black matrix is first formed on the substrate surface and is given a tapered cross-sectional shape such that it is smaller at its top surface than at the substrate surface. Said tapered profile may be achieved through a screen-on process or by an overetching process. This is followed by the deposition of a transparent conductive layer, such as ITO, onto which the various layers of different phosphors that make up the sub-pixels of the display are deposited by means of electrophoresis.Type: GrantFiled: April 8, 1996Date of Patent: March 10, 1998Assignee: Industrial Technology Research InstituteInventors: Nan-Chou D. Liu, Jammy Chin-Ming Huang, Jin-Yuh Lu
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Patent number: 5709579Abstract: Disclosed is an electrostatic charging apparatus for electrostatically charging the inside surface of the screen panel of a color cathode ray tube to make powdery phosphor to be applied to the inside surface by the electrical attraction, which comprises a corona charger for electrostatically charging the inside surface, a stand frame for supporting the corona charger, a mounting means for supporting the screen panel with the part of the inside surface of the display being wholly exposed to the corona charger with a space therebetween, and a power supply for supplying a high voltage to the corona charger, wherein the corona charger has a convex surface with a plurality of charging electrodes uniformly distributed.Type: GrantFiled: December 11, 1995Date of Patent: January 20, 1998Assignee: Samsung Display Devices Co., Ltd.Inventors: Hang-ku Ji, Young-man Kim
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Patent number: 5700175Abstract: The field emission device includes, in addition to the main, conventional array of field emission devices and its associated driving circuits, an additional, separate, pixel-sized group of field emission devices close to, but separated from, said main array. Electrons emitted by the additional pixel are collected on a separate, non-fluorescent, anode, and additional circuitry is provided, including a feedback loop from a detector of the additional pixel's cathode current to the gate voltage supply of the main array. Consequently, the voltage of the gate lines varies in inverse proportion to the cathode current of the additional pixel. This results in a display whose brightness is constant even when turned on for the first time or after a period of idleness. A method for manufacturing the device is also available.Type: GrantFiled: April 8, 1996Date of Patent: December 23, 1997Assignee: Industrial Technology Research InstituteInventors: Wen Chun Wang, Tzung-Zu Yang
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Patent number: 5697824Abstract: A system and method for producing thin, uniform powder phosphors for field emission display screens features a planarization of the phosphor powder layer. That planarization is accomplished by placing the deposited phosphor layer in an anode plate between two optical flats, which are then mounted within a mechanical press.Type: GrantFiled: June 7, 1995Date of Patent: December 16, 1997Assignees: Microelectronics and Computer Technology Corp., SI Diamond Technology, Inc.Inventors: Chenggang Xie, Donald E. Patterson, Nalin Kumar