Phosphor On Envelope Wall Patents (Class 313/485)
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White light-emitting device having a cap layer formed from a mixture of silicon and a phosphor blend
Patent number: 7701124Abstract: A white light source has a substrate with a blue light-emitting diode placed thereon and a cap layer enclosing the blue light-emitting diode. The cap layer includes a mixture of silicon and phosphor blend at ratio of 1:0.2-0.5. The phosphor blend includes a red phosphor, a green phosphor and a yellow phosphor.Type: GrantFiled: February 28, 2007Date of Patent: April 20, 2010Assignee: Harvatek CorporationInventors: Bily Wang, Jonnie Chuang, Chuanfa Lin, Chih Shan Yu -
Patent number: 7696684Abstract: A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit light of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.Type: GrantFiled: February 2, 2007Date of Patent: April 13, 2010Assignee: The Regents of the University of CaliforniaInventors: Shimon Weiss, Michael C. Schlamp, A. Paul Alivisatos
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Publication number: 20100079055Abstract: A lamp assembly comprises a light source and an electrical base configured to connect with an associated power source. An electrical assembly is in electrical communication with the light source and the electrical base. The electrical assembly is configured to condition power received from the associated power source to operate the light source. A housing is formed of an overmolding material. The overmolded housing at least partially encapsulates the electrical assembly and is connected with the light source and the electrical base.Type: ApplicationFiled: September 30, 2008Publication date: April 1, 2010Applicant: General Electric CompanyInventors: Bruce R. Roberts, Laszlo S. Ilyes
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Publication number: 20100079056Abstract: A plasma display panel has a front substrate (3) and a back substrate (2) arranged opposed to each other through a discharge space (4). On the back substrate, a fluorescent layer (5) is formed. On the front substrate, display electrodes are formed extending in a horizontal direction, a discharge cell area is demarcated corresponding to the display electrodes, and a plurality of shielding films (13) extending in the horizontal direction are moreover formed at each position which is among the display electrodes and within the discharge cell area. When the distance between the shielding films and the fluorescent layer is set to be D, the width L of a shielding film and the distance S between the shielding films satisfy 0.58?L?D and D?S?1.73D. This reduces the reflectance ratio of outdoor daylight to improve lighted room contrast.Type: ApplicationFiled: May 7, 2007Publication date: April 1, 2010Inventors: Akira Otsuka, Takashi Sasaki
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Patent number: 7679277Abstract: A light emitting device includes a light emitting element having an emission peak wavelength of 350 nm-420 nm and a phosphor absorbing light from this light emitting element and emitting fluorescence having a different emission peak wavelength. The phosphor is formed of a semiconductor material that allows the emission peak wavelength to be controlled by transition across the bandgap, and is configured with four or more fluorescences having different emission peak wavelengths. Thus, it is possible to provide a light emitting device which has a relatively simple structure to keep high theoretical efficiency limit and achieves good general color rendering index (Ra) and special color rendering index (R9).Type: GrantFiled: December 1, 2006Date of Patent: March 16, 2010Assignee: Sharp Kabushiki KaishaInventors: Tatsuya Morioka, Osamu Kawasaki
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Publication number: 20100060138Abstract: In a low-pressure gas discharge lamp provided with a gas discharge vessel comprising a gas filling with a discharge-maintaining composition comprising a) a molecular radiator compound, b) hydrogen as an additive and c) a buffer gas, which low-pressure gas discharge lamp is further provided with means for generating and maintaining a low-pressure gas discharge, the addition of hydrogen comes up with the following advantages: an increase of plasma efficiency and a decrease of the cold spot temperature at which optimum efficiency is achieved.Type: ApplicationFiled: June 27, 2006Publication date: March 11, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Rainer Hilbig, Achim Gerhard Rolf Koerber, Stefan Schwan
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Publication number: 20100052508Abstract: A discharge lamp is disclosed, including a sealed vessel with an inner surface, at least one illuminating gas filled inside the sealed vessel, and a fluorescent layer coated on the inner surface. The composition of the fluorescent layer is adjusted according to a colored light emitted by the illuminating gas during a discharge process within the sealed vessel, such that the colored light is converted into a visible light after passing through the fluorescent layer.Type: ApplicationFiled: January 5, 2009Publication date: March 4, 2010Applicant: WELLYPOWER OPTRONICS CORPORATIONInventors: Tjong-Ren Chang, Jin-Yuh Lu, Wen-Chun Chiu, Wei-Yuan Tsou
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Publication number: 20100045161Abstract: A plasma display panel including a first substrate and a second substrate, the first substrate having an inner surface facing the second substrate, at least one dark-colored visible ray absorbing layer on the inner surface of the first substrate, at least one discharge sustaining electrode pair on the visible ray absorbing layer, a first dielectric layer on the discharge sustaining electrode pair, an address electrode on the second substrate and disposed in a direction crossing the discharge sustaining electrode pair, a second dielectric layer on the address electrode, barrier ribs disposed between the first substrate and the second substrate and defining a plurality of discharge cells, and a phosphor layer coated in the discharge cells.Type: ApplicationFiled: July 31, 2009Publication date: February 25, 2010Inventor: Hiroshi Kanda
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Publication number: 20100045162Abstract: A fluorescent lamp includes sealed glass tube 1, a pair of opposed electrodes 2 provided in glass tube 1 wire lead 3 one end of which is connected to one of electrodes 2 and the other end of which passes through an end face of glass tube 1 in a gastight manner and is drawn to the outside of glass tube 1, cylindrical member 5 provided at an end of glass tube 1 and containing a portion of wire lead 3 that is drawn to the outside of glass tube 1, and solder portion 6 formed of a solder material contained in the interior of cylindrical member 5, wherein in the cylindrical member 5 an opening 8 is formed that is opposite the end face of the glass tube 1 and solder portion 6 is exposed to the outside in opening 8.Type: ApplicationFiled: August 6, 2009Publication date: February 25, 2010Inventor: Satoshi Tamura
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Publication number: 20100039021Abstract: A plasma display panel (PDP) including a front substrate and a rear substrate facing each other, a partition wall interposed between the front substrate and the rear substrate to define a plurality of unit cells, each unit cell including a main discharge space, an auxiliary discharge space, and a step space, the auxiliary discharge space and the step space being on opposite sides of the main discharge space along a stepped sidewall of the partition wall, pairs of scanning and sustain electrodes arranged adjacent the auxiliary discharge spaces and to the step spaces, respectively, address electrodes extending to cross the scanning electrodes at a location adjacent to the auxiliary discharge spaces, a phosphor layer formed at least in the main discharge spaces, and discharge gas filling the unit cell.Type: ApplicationFiled: August 11, 2009Publication date: February 18, 2010Inventor: Seung-Hyun Son
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Patent number: 7661839Abstract: A light includes a light-producing inner tube, and an outer tube positioned around the light-producing inner tube; the light-producing inner tube has electrical terminals at two ends thereof, which sticks out of the outer tube; the outer tube has a light reflecting film on an outer side of a first portion thereof; an inner side of the first portion of the outer tube is processed so as to have a rough and lumpy surface, which can cause light produce by the light-producing inner tube to travel in all directions; the outer tube has a fluorescent layer on each of inner and outer sides of a second portion thereof, which make the second portion of the outer tube more pervious to light.Type: GrantFiled: May 1, 2007Date of Patent: February 16, 2010Inventor: Hua-Hsin Tsai
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Patent number: 7659657Abstract: A flat fluorescent lamp which can be used with an LCD display includes a plurality of discharge channels. Pairs of electrodes are formed on both ends of the discharge channels. Each of the plurality of channels has an emitting section at the middle, and electrode sections on both ends thereof. A width of the electrode sections is the same as that of the emitting section. However, a height of the electrode sections is greater than a height of the emitting section, resulting in the electrode section having a cross-sectional area that is larger than that of the emitting section.Type: GrantFiled: April 13, 2007Date of Patent: February 9, 2010Assignee: Mirae CorporationInventors: Chung Soo Kim, Do Young Cho, Jong Lee Park, Hwan Woong Lee
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Patent number: 7659658Abstract: A white phosphor is provided, which is a white phosphor comprising a single material, wherein the light-emitting center is one element other than Mn, and emitting white light having excellent color rendering properties by near ultraviolet excitation. The white phosphor is represented by the formula SraSbMgcZndSieOf:Eu2+ (with the proviso that when e=1, 0<(c+d)/(a+c+d)?0.2, 1.8?a+c+d?2.2, 0?b/(b+f)?0.07 and 3.0?b+f?4.4), among which, as one preferred example, the white phosphor is represented by the composition formula (SrO1-?S?)x.(Mg1-?Zn?O)y.(SiO2)z:Eu2+ (in the formula, 4.5?x/y?27.5, 3?z/y?14.5, 0???0.3 and 0???0.7) is proposed.Type: GrantFiled: May 17, 2007Date of Patent: February 9, 2010Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Tomoyasu Yano, Asuka Sasakura, Jun-ichi Itoh
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Publication number: 20100026162Abstract: A lamp assembly includes an inner assembly that has a CFL source, an electronics board, and a holder that interconnects the CFL source and electronics board. An outer, light transmissive envelope surrounds the inner assembly and various fixing arrangements are disclosed for securing the inner assembly to the outer envelope. Three primary mechanisms are a ratchet mechanism, a spring mechanism, or using adhesive to secure the inner assembly to the outer envelope under a predetermined tension.Type: ApplicationFiled: July 29, 2008Publication date: February 4, 2010Inventors: Jozsef Fulop, Peter Mora, Laszlo Petras, Peter Lucz
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Publication number: 20100026163Abstract: A plasma-discharge light emitting device is provided. The plasma-discharge light emitting device may include: rear and front panels separated from each other in a predetermined interval, wherein at least one discharge cell may be provided between the rear and front panels, and wherein plasma discharge may be generated in the discharge cells; a pair of discharge electrodes provided on at least one of the rear and front panels for each of the discharge cells; a trench provided as a portion of each of the discharge cells between the pair of the discharge electrodes; and electron-emitting material layers provided on both sidewalls of the trench.Type: ApplicationFiled: September 30, 2009Publication date: February 4, 2010Inventors: Young-dong Lee, Hidekazu Hatanaka, Seung-hyun Son, Jai-kwang Shin, Young-mo Kim
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Publication number: 20100027244Abstract: A fluorescent lamp has a glass container that has a phosphor layer formed on an inner surface of the glass container, and that is hermetically sealed, wherein phosphors of the phosphor layer include a blue phosphor, a green phosphor, and a red phosphor, a main luminescence peak of the blue phosphor exists in a wavelength region in a range of 430 nm to 460 nm inclusive, a half-value width of a spectrum of the main luminescence peak of the blue phosphor is less than or equal to 50 nm, a main luminescence peak of the green phosphor exists in a wavelength region in a range of 510 nm to 530 nm inclusive, a half-value width of a spectrum of the main luminescence peak of the green phosphor is less than or equal to 30 nm, and a main luminescence peak of the red phosphor exists in a wavelength region in a range of 600 nm to 780 nm inclusive, and a difference between a wavelength of the main luminescence peak of the blue phosphor and a wavelength of the main luminescence peak of the green phosphor is in a range of 70 nType: ApplicationFiled: January 31, 2008Publication date: February 4, 2010Inventors: Hideki Wada, Kazuhiro Matsuo, Toshihiro Terada, Yoshinari Fuchida, Masakazu Yamaguchi, Ryo Minamihata, Mitsuharu Kawasaki, Kazuhiro Kumada, Hiroshi Sakurai, Shigeru Ido, Masanobu Murakami, Taku Ikeda
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Patent number: 7656082Abstract: In accordance with an aspect of the present invention, a color display device (10) includes a plurality of gas discharge tubes disposed side by side. The gas discharge tubes have respective phosphor layers (4R, 4G, 4B) of different materials for different colors disposed therein and containing discharge gas therein. Each of the gas discharge tubes has a plurality of light-emitting points disposed along the length thereof. The color display device further includes a plurality of display electrodes disposed on the display screen side of the gas discharge tubes, and a plurality of signal electrodes (3) disposed on the rear side of the gas discharge tubes. Voltage control layers (6R, 6G, 6B) are disposed between the phosphor layers and the signal electrodes. The voltage control layers are made of materials which change firing voltages applied between the display electrodes and the signal electrodes.Type: GrantFiled: September 21, 2007Date of Patent: February 2, 2010Assignee: Shinoda Plasma Co., Ltd.Inventors: Manabu Ishimoto, Hitoshi Hirakawa, Kenji Awamoto, Hitoshi Yamada, Akira Tokai
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Patent number: 7652416Abstract: Disclosed herein is a lamp including a specific phosphor and having good ability to maintain brightness and color coordinates. Particularly, this invention provides a lamp using a phosphor in which a magnetoplumbite phase is epitaxially formed on the surface of a phosphor having a ? alumina phase.Type: GrantFiled: March 28, 2006Date of Patent: January 26, 2010Assignee: Daegoo Electronic Materials Co., Ltd.Inventors: Kwang Wook Choi, Do Hoon Kim, Ick Soon Kwak, Tae Hyun Kwon
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Patent number: 7638934Abstract: A fluorescent substance is provided, with includes a matrix composed of a compound having an AlN polytypoid structure represented by the following general formula (1), and a luminescence center element: (Al,M)a(N,X)b??(1) wherein, M is at least one metal excluding Al, X is at least one non-metal excluding N, and a and b are positive values.Type: GrantFiled: May 31, 2006Date of Patent: December 29, 2009Assignees: Kabushiki Kaisha Toshiba, National University Corporation Yokohama National UniversityInventors: Yumi Fukuda, Masaaki Tamatani, Hironori Asai, Naotoshi Matsuda, Ryosuke Hiramatsu, Keiko Albessard, Jun-ichi Tatami, Katsutoshi Komeya, Tohru Wakihara
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Publication number: 20090315447Abstract: The invention relates to a light source, especially a fluorescent lamp, comprising at least one bulb, a silicon rubber which is resistant to high temperatures being arranged on the bulb. Said silicon rubber is provided with at least one pigment influencing the colour appearance and light saturation in order to generate a saturated colour appearance.Type: ApplicationFiled: July 19, 2007Publication date: December 24, 2009Applicant: OSRAM GesellschaftInventors: Stephan Appel, Armin Konrad
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Publication number: 20090302740Abstract: A method of manufacturing a fluorescent light bulb includes the steps of: (a) providing a lighting base which has a plurality of electrical terminals formed thereon; (b) bending an elongated fluorescent tube to form a lower vertical-extending portion and an upper curving portion outwardly and radially extended from the vertical-extending portion; (c) communicatively linking every two of the fluorescent tubes to form a plurality of fluorescent elements, wherein a light passageway is formed between the two curving portions of the fluorescent tubes of each of the fluorescent elements; (d) mounting the fluorescent elements at the lighting base; and (e) electrically coupling the fluorescent elements with the lighting base, so as to allow the fluorescent light from the opposed fluorescent element to pass through the light passageway so as to enhance a brightness and efficiency of the fluorescent elements.Type: ApplicationFiled: June 9, 2008Publication date: December 10, 2009Inventors: Baogui Ge, Wei Ge
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Patent number: 7629733Abstract: A display device (12) has a display screen, the display screen comprising a plurality of gas discharge tubes (20R, 20G, 20B, . . . 28R, 28G, 28B) disposed side by side. Each of the gas discharge tubes includes a phosphor layer (4) formed therein and also includes a discharge gas contained therein. Each gas discharge tube has a plurality of light-emitting points. Each of the plurality of gas discharge tubes (20R, 20G, 20B, . . . 28R, 28G, 28B) is curved along the longitudinal direction thereof. The display screen is formed by combining the plurality of gas discharge tubes having different magnitudes of curvature.Type: GrantFiled: August 24, 2007Date of Patent: December 8, 2009Assignee: Shinoda Plasma Co., Ltd.Inventors: Manabu Ishimoto, Yosuke Yamazaki, Hitoshi Yamada, Hitoshi Hirakawa, Akira Tokai, Koji Shinohe, Kenji Awamoto
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Patent number: 7625097Abstract: An illuminated elevator lighting system including an elevator cage, a plurality of cold-cathode fluorescent lamps disposed on a ceiling surface of the cage and arrayed in parallel, a reflection plate which reflects an illumination light from the cold-cathode fluorescent lamp, and a stabilizer which lights the cold-cathode fluorescent lamp.Type: GrantFiled: September 4, 2003Date of Patent: December 1, 2009Assignee: Toshiba Elevator Kabushiki KaishaInventors: Masahiko Endo, Kyoichi Ikeda, Kenichi Okada, Hiroyuki Ogawa
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Patent number: 7622867Abstract: A cold cathode fluorescent lamp includes: a working gas, a transparent tube, a fluorescent layer, an anode, a cold cathode and a light cut filter film. The transparent tube receives a working gas, and has an inner surface and an outer surface. The fluorescent layer is formed on the inner surface of the transparent tube. The light cut filter film is formed on the outer surface of the transparent tube. The cold cathode is disposed at one end of the transparent tube and the anode is disposed at the other end of the transparent tube. The cold cathode fluorescent lamp can block most part of the ultraviolet lights and infrared lights to irradiate at the light guide plate, whereby the light guide plate has a long service life without following problems such as thermal deformation, deflection, turn color and transformation.Type: GrantFiled: February 19, 2006Date of Patent: November 24, 2009Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Ga-Lane Chen
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Publication number: 20090284125Abstract: A plasma display panel includes first and second substrates facing each other and spaced apart from each other, barrier ribs arranged between the first and second substrates to define discharge cells, phosphor layers in the discharge cells, address electrodes extending on the first substrate along a first direction to correspond to the discharge cells, first and second electrodes extending on the second substrate along a second direction to correspond to the discharge cells, the second direction crossing the first direction, a dielectric layer on the first and second electrodes, and a doped protective layer on the dielectric layer, the protective layer including at least one groove.Type: ApplicationFiled: May 14, 2009Publication date: November 19, 2009Inventors: Seong-chan BAE, Chun-Gyoo LEE
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Patent number: 7619361Abstract: A discharge lamp device is provided that includes a light source device including a reflective surface. In the light source, noble gas not including mercury is excited to provide stable light emission and ozone or the like is prevented from being generated. This discharge lamp device includes airtight container (10) in which both end sections of a glass bulb are sealed. Airtight container (10) is filled with a discharge medium mainly including noble gas. One end section of airtight container (10) includes first electrode (11). Airtight container (10) is externally attached to insulating holder (20) having a square plate-like shape that includes penetration hole(s) (21) at one or a plurality of position(s). Holder (20) is fitted to second electrode (12) shaped to be a U-like groove so that a fixed interval between airtight container (10) and second electrode (12) is maintained.Type: GrantFiled: January 5, 2005Date of Patent: November 17, 2009Assignee: Panasonic CorporationInventors: Masaki Hirohashi, Nobuhiro Shimizu, Norikazu Yamamoto, Teruaki Shigeta, Yoko Matsubayashi, Yutaka Wakimura, Shuuji Furukawa, Hisashi Dejima
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Patent number: 7619352Abstract: Fluorescent lamp (1) comprising a glass discharge vessel (2) in which a gas is present, which discharge vessel (2) is on two sides provided with a tubular end portion (3) having a longitudinal axis, which end portion (3) includes a glass stem (5), wherein an exhaust tube (6) extends axially outwardly from said stem (5) for supplying and/or discharging gases during the production of the lamp (1), wherein an electrode (8) extends axially inwardly through the stem (5) for generating and maintaining a discharge in the discharge vessel (2), said electrode (8) comprises two pole wires (9) held in position by the stem (5) and connected to plug pins (11) of an end cap (13) fixed to said end portion (3), characterized in that said end cap (13) is at least substantially made of a shrink material.Type: GrantFiled: February 21, 2005Date of Patent: November 17, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Sven Johannes Jeurissen, Pieter Johannes Wiskerke, Cornelis Aarnoud Peter Joziasse
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Publication number: 20090278437Abstract: A light emitting string is produced by forming a fluorescent layer on a fluorescent layer support member having an opening and configured such as to protect the fluorescent layer, and inserting the fluorescent layer support member into a minute tube. Therefore, when the fluorescent layer support member is inserted into the minute tube, the fluorescent layer is prevented from contacting the interior wall of the minute tube. This prevents the chipping, the separation and the cracking of the fluorescent layer, thereby improving the yield in production of plasma light emitting strings.Type: ApplicationFiled: April 14, 2006Publication date: November 12, 2009Applicant: Shinoda Plasma CorporationInventors: Yosuke Yamazaki, Kenji Awamoto
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Publication number: 20090273272Abstract: A fluorescent lamp with a multiple electrodes at each input, where 3 to 8 electrodes may be installed in a single electrode holder sealed at each end of the fluorescent lamp tube. In operation, electron discharge primarily only occurs from one electrode at each input end, which has smallest resistance. With multiple electrodes, the electron discharge function at each input end will last one to several times longer, compared with the input end with just a single electrode. Because the life span of the fluorescent lamp depends on the electron discharge function at each input end, multiple electrodes at each input end increases the overall service life of the lamp. This invention increases cost-effectiveness of the fluorescent lamp without requiring complex structural modifications.Type: ApplicationFiled: July 21, 2006Publication date: November 5, 2009Inventor: Tianzai Huang
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Patent number: 7612502Abstract: A planar light source including a first substrate, a second substrate, a sealant, first electrodes, sets of first dielectric patterns, a phosphor layer, and a discharge gas is provided. The second substrate is disposed above the first substrate. The sealant is disposed between the first and second substrates to form a cavity among the first substrate, the second substrate, and the sealant. The first electrodes are disposed on the first substrate, and each set of the first dielectric patterns has at least two first striped dielectric patterns. Each of the first striped dielectric patterns covers one of the first electrodes correspondingly. The edges of the top of each first striped dielectric pattern are raised in a peak shape. The phosphor layer is disposed on the first substrate and between the first striped dielectric patterns of each set of the first dielectric patterns. The discharge gas is injected into the cavity.Type: GrantFiled: June 1, 2006Date of Patent: November 3, 2009Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Yu-Heng Hsieh, Chu-Chi Ting, Shinn-Haw Huang, Chang-Jung Yang, Chia-Hua Ai
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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
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Publication number: 20090230836Abstract: Provided is a display device such as a plasma display device including a front plate and a rear plate arranged opposing to each other to form a discharge space, where a discharge gas filled inside the discharge space, and at least a pair of electrodes for performing a display discharge and a phosphor layer for emitting visible light by an ultraviolet ray emission by the discharge of the discharge gas are provided. Inside the discharge space, a material whose main composition is alumina oxychloride of a group IIa metal and/or a group IIb metal is at least partly contained. Accordingly, a sustain discharge voltage can be reduced.Type: ApplicationFiled: February 24, 2009Publication date: September 17, 2009Inventors: Shin Imamura, Shunsuke Mori, Tatsuya Miyake, Hideto Momose, Kazutaka Tsuji, Ryo Inoue, Shirun Ho, Keizo Suzuki
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Publication number: 20090224651Abstract: Phosphor mixtures for phosphor layers of plasma display devices are provided. The phosphor mixture includes a first compound selected from compounds represented by Gd1-yTbyAl3(BO3)4 (0.05?Y?0.8) and compounds represented by YBO3:Tb3+, and a second compound represented by Zn(Ga1-XAlx)2O4:Mn2+ (0.2?X?0.8). The first compound and second compound are mixed in a weight ratio ranging from about 3:7 to about 6:4. The inventive phosphor mixtures exhibit reduced decay times, thereby increasing color reproducibility and improving brightness characteristics.Type: ApplicationFiled: March 4, 2009Publication date: September 10, 2009Inventors: Hyun-Deok Lee, Ick-Kyu Choi, Do-Hyung Park, Ji-Hyun Kim, Kyu-Chan Park, Mi-Ran Song, Yu-Mi Song, Min-Ju Kim, Yoon-Chang Kim, Jay-Hyok Song, Young-Hun Lee
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Patent number: 7586252Abstract: A phosphor admixture includes a phosphor powder and a number of radiation capture electron emitters. The emitters are dispersed within the phosphor powder. A phosphor screen includes phosphor particles, radiation capture electron emitters and a binder. The emitters and phosphor particles are dispersed within the binder. An imaging assembly includes a phosphor screen configured to receive incident radiation and to emit corresponding optical signals. An electronic device is coupled to the phosphor screen. The electronic device is configured to receive the optical signals from the phosphor screen and to generate an imaging signal.Type: GrantFiled: May 23, 2005Date of Patent: September 8, 2009Assignee: General Electric CompanyInventors: Clifford Bueno, Steven Jude Duclos, David Michael Hoffman, John Michael Cuffe
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Patent number: 7579765Abstract: An orange-emitting phosphor that emits at a high luminance when being excited by blue light emitted by a blue light-emitting diode is provided. This orange-emitting phosphor is an alkaline-earth metal silicate-based phosphor represented by a general formula of a(Sr1-xEux(1-y)Ybxy)O.SiO2. In the formula, a is provided as 2.9?a?3.1, x is provided as 0.005?x?0.10, and y is provided as 0.001?y?0.1. An orange-emitting phosphor that emits orange at a high luminance and produces no harmful gas is provided.Type: GrantFiled: July 9, 2008Date of Patent: August 25, 2009Assignee: Nemoto & Company, Ltd.Inventors: Takeshi Takahara, Yasushi Aoki, Takashi Murase
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Patent number: 7576487Abstract: A plasma display device provided with a green color phosphor which is charged entirely with a positive potential, adsorbs only limited amounts of water, carbon monoxide, carbon dioxide and hydrocarbon, and not liable to cause chemical reaction thereto. A green color phosphor layer is formed of the green phosphor comprising at least one compound selected from among materials defined by the general formulae of M1-a (Ga1-xAlx)2 O4:Mna (where “M” denotes one of Zn, Mg, Ca and Sr), (Y1-a-yGda) (Ga1-xAlx)3 (BO3)4:Tby, (Y1-a-yGda) (Ga1-xAlx)3 (BO3)4:Cey, Tby, (Y1-a-yGda) BO3:Tby and (Y1-a-yGda)3 (Ga1-xAlx)5 O12:Tby.Type: GrantFiled: June 29, 2004Date of Patent: August 18, 2009Assignee: Panasonic CorporationInventors: Yuichiro Miyamae, Masaki Aoki, Kazuhiko Sugimoto, Hiroshi Setoguchi, Junichi Hibino, Yoshinori Tanaka
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Publication number: 20090200916Abstract: There are provided cold cathode fluorescent lamp with high quality and high reliability and method of manufacturing the cold cathode fluorescent lamp, the cold cathode fluorescent lamp making it possible to reduce the amount of a portion on which a sputter phenomenon occurs thereby reducing the discharge start-up time in the cold cathode fluorescent lamp, and to maintain stable discharge for a long period of time thereby improving the dark start-up characteristic as well as high luminance and long life properties.Type: ApplicationFiled: November 18, 2008Publication date: August 13, 2009Inventor: Hisashi Migita
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Patent number: 7569982Abstract: A planar photoluminescent lamp. In one embodiment, the planar photoluminescent lamp includes a plurality of barrier walls defining a plurality of channels, wherein each channel is with an axis and formed with a resistive portion characterized by a width, Ar, and a first capacitive portion and a second capacitive portion both characterized by a width, Ac, such that Ac>Ar. The planar photoluminescent lamp also includes a first electrode and a second electrode. The first electrode and the second electrode are substantially perpendicular to the axis of a channel and extend over the first capacitive portions and the second capacitive portions of the plurality of channels, respectively.Type: GrantFiled: December 16, 2005Date of Patent: August 4, 2009Assignee: AU Optronics CorporationInventors: Yuan-Ker Lan, Horng-Bin Hsu, Shin-Chin Tseng
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Publication number: 20090184623Abstract: The present invention relates to a plasma display panel (PDP) that includes a first substrate, an address electrode formed on the first substrate, a dielectric layer formed on the first substrate and covering the address electrode, a barrier rib formed on the dielectric layer, a second substrate, a display electrode formed on the second substrate, a dielectric layer formed on the second substrate and covering the display electrode, and a protection layer formed on the dielectric layer of the second substrate. Discharge cells are defined by barrier ribs, and a phosphor layer is formed in the discharge cells. Barrier ribs contains inorganic adsorbent. When a PDP is operated for a long time, residual carbon or water is generated inside discharge cells, and thereby contaminates a discharge gas contained in the discharge cells. The inorganic adsorbent included in the barrier ribs absorb the residual carbon or water improving efficiency and lifespan of the PDP.Type: ApplicationFiled: March 27, 2009Publication date: July 23, 2009Inventor: Young-Gil Yoo
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Publication number: 20090184622Abstract: A lamp and a display device including the lamp, in which the lamp includes a discharge tube, a discharge gas, a blue fluorescent substance, a green fluorescent substance and a red fluorescent substance. The discharge gas is disposed in the discharge tube. The blue, green and red fluorescent substances are disposed at an inner wall surface of the discharge tube to generate a blue light, a green light and a red light by ultraviolet rays emitted by the discharge gas. The red fluorescent substance includes at least two different red fluorescent substances, which generate the red light having peak wavelengths different from each other. Thus, the color reproducibility may be improved using the two different red fluorescent substances.Type: ApplicationFiled: October 1, 2008Publication date: July 23, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dong-Chin LEE, Seok-Hyun NAM, Seon-Bae KIM, Min-Jeong WANG
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Publication number: 20090179547Abstract: A flat lamp transmitting radiation in UV (ultraviolet), including first and second flat or substantially flat glass elements substantially parallel to each other and defining an internal space filled with gas capable of emitting the radiation in the UV or of exciting a phosphor material possibly present and emitting the radiation in the UV. The phosphor material can be deposited on one face of the first and/or second glass element, the first and/or second glass element being made of a material transmitting the UV radiation. A plurality of pairs of electrodes are capable of being at different potentials and of being supplied by an AC voltage, the pairs associated with the first glass element and placed outside the internal space, the electrodes being in a form of bands and/or wires in the first glass element or in another dielectric element associated with the first glass element.Type: ApplicationFiled: August 10, 2006Publication date: July 16, 2009Applicant: SAINT-GOBAIN GLASS FRANCEInventors: Guillaume Auday, Jingwei Zhang, Didier Duron
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Publication number: 20090174307Abstract: A fluorescent lamp includes a lamp body, a fluorescent layer and a discharge electrode. The lamp body has a discharge space in which ultraviolet light is generated. The fluorescent layer is formed on an inner surface of the lamp body to change the ultraviolet light into visible light. The discharge electrode is on an end portion of the lamp body to apply a voltage to the discharge space. A ratio of intensities of the visible light at wavelengths of about 545 nm and about 516 nm is about 1.32:1 to about 1.71:1. Therefore, color reproducibility and luminance may be improved.Type: ApplicationFiled: September 19, 2008Publication date: July 9, 2009Inventors: Dong-Chin Lee, Seok-Hyun Nam, Seon-Bae Kim, Sang-Hyuck Yoon, Hyun-Jin Kim, Kyung-Min Kim, So-Jin Ryu, Min-Jeong Wang, Hee-Tae Kim
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Publication number: 20090174306Abstract: A fluorescent lamp including a tube, a fluorescent layer, a discharging gas and two electrodes is provided. The fluorescent layer is disposed on an inner wall of the tube. The fluorescent layer has a plurality of patterned grooves to form a serial number. The discharging gas is distributed in the tube. In addition, the electrodes are disposed at two ends of the tube.Type: ApplicationFiled: December 1, 2008Publication date: July 9, 2009Applicant: Sintronic Technology Inc.Inventors: Chun-Hsien Yeh, Yu-Tsai Peng, Ching-Hsiang Tseng, Chi-Tsan Wang, Hsiang-Lin Chang
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Publication number: 20090167144Abstract: A surface light source apparatus with dual-side emitting light includes a transparent cathode structure, a transparent anode structure, a fluorescent layer and a low-pressure gas layer. The transparent cathode structure and the transparent anode structure are opposite to each other and respectively a surface structure. The fluorescent layer is located between the transparent cathode structure and the transparent anode structure. The low-pressure gas layer fills a space between the transparent cathode structure and the transparent anode structure and functions to induce the cathode for evenly emitting electrons. In addition, the electron mean free path of the low-pressure gas layer allows at least sufficient electrons to directly impact the fluorescent layer under an operation voltage.Type: ApplicationFiled: March 18, 2008Publication date: July 2, 2009Applicant: Industrial Technology Research InstituteInventors: Yi-Ping Lin, Shih-Pu Chen, Jung-Yu Li, Lian-Yi Cho
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Patent number: 7554254Abstract: The present invention provides a flat fluorescent lamp. The flat fluorescent lamp comprises a single plate. Consequently, the flat fluorescent lamp is structurally safe, brightness of the flat fluorescent lamp is high, and efficiency of the flat fluorescent lamp is also high without the provision of other additional optical components. The present invention also provides a method of manufacturing such a flat fluorescent lamp.Type: GrantFiled: May 23, 2005Date of Patent: June 30, 2009Assignee: Advanced Display Process Engineering Co., Ltd.Inventors: Young Jong Lee, Jun Young Choi, Jun Ho Jeong, Ji-Won Kim, Young-Keun Lee, Young-Kwan Park, Jun-Ho Lee
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Publication number: 20090160310Abstract: A discharge lamp 1 satisfies relations of ?1??2?3×10?7 and ?2>?3, where ?1 represents a thermal expansion coefficient [1/K] of a material of lead wires 5b and 6b, ?2 represents a thermal expansion coefficient of a material of bead glasses 3 and 4, and ?3 represents a thermal expansion coefficient of a material of a glass bulb 2. The discharge lamp 1 also satisfies relation of S1<S2, where S1 represents a strain point [° C.] of the material of the bead glasses 3 and 4 and S2 represents the material of the glass bulb 2. In the discharge lamp 1, tensile strains are unlikely to be created on the bead glasses or the glass bulb. As a result, a sealing part of the discharge lamp 1 can hardly crack during manufacture of the lamp.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Inventors: Atsushi Motoya, Naomi Masuda
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Patent number: 7550910Abstract: A mercury vapor discharge fluorescent lamp having a barrier layer which is 0.01 to 50 weight percent pigment particles, the presence of the pigment particles in the barrier layer increasing the CRI value of the lamp by at least 1 or 2 or 3 to preferably at least 90. The pigment particles are preferably inorganic and yellow. The color temperature of the lamp is preferably 2300-3800 K. The pigment particles help filter out mercury emissions at 405 and 436 nm.Type: GrantFiled: November 8, 2005Date of Patent: June 23, 2009Assignee: General Electric CompanyInventor: Jon B Jansma
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Patent number: 7550911Abstract: A backlight unit has an external electrode fluorescent lamp in an housing. The external electrode fluorescent lamp includes a glass bulb having a discharge space inside, and electrodes around both ends of the glass bulb. A protective layer and a phosphor layer are formed on an internal surface of the glass bulb in this order. The glass bulb is made of soda glass, and sodium oxide precipitated from this soda glass appears on part of the internal surface of the glass bulb where the protective layer is not formed, so as to be exposed to the discharge space.Type: GrantFiled: May 8, 2006Date of Patent: June 23, 2009Assignee: Panasonic CorporationInventors: Toshihiro Terada, Masanobu Murakami, Kazuhiro Matsuo, Taizou Ono, Hideki Wada, Shingo Tsutsumi, Mitsuharu Kawasaki, Hiroyuki Arata, Yuko Habuta, Tomokazu Matsuura, Hirofumi Yamashita
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Publication number: 20090153016Abstract: A colored fluorescent lamp is provided. The lamp comprises an envelope having an inner surface, means for providing discharge within the envelope, a discharge gas fill inside the envelope, a phosphor coating adjacent to the inner surface of the envelope, and at least a barrier coating between the inner surface of the envelope and the phosphor coating. The barrier coating comprises a blend of alumina and at least one coloring pigment.Type: ApplicationFiled: December 17, 2007Publication date: June 18, 2009Inventors: Csaba Koronya, Gyorgy Vukics
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Publication number: 20090153017Abstract: A plasma display panel including: a first substrate; a second substrate facing the first substrate; an electrode sheet including: a barrier rib structure between the first and second substrates defining a plurality of discharge cells in which discharge occurs; a plurality of first discharge electrodes which are separated from each other in the barrier rib structure and extend between the first substrate and the second substrate with portions that surround the discharge cells; and a plurality of second discharge electrodes which are separated from each other and the first discharge electrodes in the barrier rib structure and extend between the first substrate and the second substrate with portions that surround the discharge cells; a phosphor layer on at least one of the first and second substrates; a discharge gas filled in the discharge cells; and a plurality of first aligning marks in the electrode sheet.Type: ApplicationFiled: December 8, 2008Publication date: June 18, 2009Inventors: Jae-Ik Kwon, Yong-Shik Hwang