Phosphor On Anode Segments Patents (Class 313/496)
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Patent number: 8227973Abstract: A conductive member is provided, surrounding a terminal, on a substrate so that a portion of the conductive member is positioned between wiring and the terminal. The conductive member includes, at an inner edge thereof, multiple portions whose distances from the terminal are different. The multiple portions include a portion whose distance from the terminal is shorter than that of a portion among the plurality of portions that is closest to the wiring.Type: GrantFiled: June 21, 2010Date of Patent: July 24, 2012Assignee: Canon Kabushiki KaishaInventors: Koji Yamazaki, Kinya Kamiguchi
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Publication number: 20120176024Abstract: A field emission lamp, capable of increasing the number of electron emitting points thereof, and of increasing the uniformity and the intensity of the light output therefrom by installing a mesh cathode is disclosed. The field emission lamp comprises: an outer shell having an inner surface, a mesh cathode unit surrounded by the outer shell, an anode unit formed on a portion of the inner surface of the outer shell, and a phosphor layer formed on a portion of the anode unit. Wherein, the light generated by the phosphor layer, due to the bombardment of the electrons, can output from the field emission lamp of the present invention, through the outer shell where none of the anode unit is formed thereon.Type: ApplicationFiled: April 13, 2011Publication date: July 12, 2012Applicant: Tatung CompanyInventor: Tzung-Han Yang
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Patent number: 8198794Abstract: A method comprising patterning a substrate to form exposed regions of the substrate sized to deter entangled growth of carbon nanotubes thereon and growing vertically aligned nanotubes on the exposed regions of the substrate.Type: GrantFiled: July 22, 2010Date of Patent: June 12, 2012Assignee: Indian Institute of Technology BombayInventors: Devi Shanker Misra, Kiran Shankar Hazra
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Patent number: 8198799Abstract: A display apparatus according to the present invention has a plurality of electroconductive layers outside of an image display area. Mutually adjacent ones of the electroconductive layers are electrically connected by a resistor. The resistor has a first region, and a second region which is more separated from the image display area than the first region. The area of the second region per unit length in the direction separating from the image display area is smaller than the area of the first region.Type: GrantFiled: June 29, 2011Date of Patent: June 12, 2012Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Hiroaki Ibuki, Masahiro Yokota, Keiji Suzuki, Yoshiyuki Kitahara
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Publication number: 20120133269Abstract: A pixel tube for field emission display includes a sealed container, an anode, a phosphor, and a cathode. The sealed container has a light permeable portion. The anode is located on the light permeable portion. The phosphor layer is located on the anode. The cathode is spaced from the anode and includes a cathode emitter. The cathode emitter includes a carbon nanotube pipe. One end of the carbon nanotube pipe has a plurality of carbon nanotube peaks.Type: ApplicationFiled: December 30, 2010Publication date: May 31, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: YANG WEI, SHOU-SHAN FAN
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Patent number: 8188668Abstract: An image display apparatus includes a rear plate provided with a plurality of electron-emitting devices, each electron-emitting device emitting electron; a face plate disposed opposite the plurality of electron-emitting devices and provided with a plurality of pixels of phosphor, each pixel of phosphor being irradiated with electrons emitted from corresponding ones of the electron-emitting devices to generate light; and a driver for scanning the plurality of electron-emitting devices for emitting electron from the plurality of electron-emitting devices. The phosphor has luminescence center of allowed transition type material, and the driver scans the plurality of electron-emitting devices so that maximum of charge density dosed in one pixel phosphor, during one scanning period, is equal to or larger than 3×10?8 C/cm2.Type: GrantFiled: April 20, 2007Date of Patent: May 29, 2012Assignee: Canon Kabushiki KaishaInventors: Daisuke Sasaguri, Yuji Kasanuki
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Patent number: 8177599Abstract: A method for making a field emission double-plane light source includes following steps. A metallic based network, a pair of anodes, and a number of supporting members, are provided. Each of the anodes includes an anode conductive layer and a fluorescent layer formed on the anode conductive layer. A number of carbon nanotubes, metallic conductive particles, glass particles and getter powders are mixed to form an admixture. The admixture is coated on an upper surface and a bottom surface of the network. The admixture on the upper and bottom surfaces of the network is dried and baked. The anodes, the cathode, and the supporting members are assembled and sealed to obtain the field emission double-plane light source.Type: GrantFiled: October 18, 2010Date of Patent: May 15, 2012Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Qian, Liang Liu, Peng Liu, Jie Tang, Yang Wei, Shou-Shan Fan
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Publication number: 20120112625Abstract: To provide a vacuum fluorescent display apparatus that can be expected to enhance lifespan characteristics of a red phosphor that does not contain Cd when driven in a voltage range of 30V or above. A vacuum fluorescent display apparatus comprising a filament cathode (10) and an anode (7); the filament cathode being arranged in a vacuum container, and used for releasing low-energy electrons; the anode having a phosphor (8) adhering thereto, and being struck by the low-energy electrons and thereby caused to emit light; wherein a structural body (9) is provided to a region in which the low-energy electrons released by the cathode can be controlled; the structural body having an electrically conductive or semi-conductive metal oxide formed at a portion that is bombarded by low-energy electrons.Type: ApplicationFiled: November 4, 2011Publication date: May 10, 2012Applicants: Noritake Co., Limited, Noritake Itron CorporationInventor: Koji Kato
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Patent number: 8174177Abstract: A luminescent display is provided that comprises: a plurality of individual phosphor elements (13) formed over a glass anode plate (11), and conductive segments (21) formed on each of the individual phosphor elements, wherein each of the conductive segments are electrically isolated from one another and have an anode potential (15) applied thereto.Type: GrantFiled: June 30, 2005Date of Patent: May 8, 2012Assignee: Thomson LicensingInventors: David Paul Ciampa, Samuel Paul Benigni, Farzad Parsapour
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Patent number: 8164246Abstract: A light emission device for simplifying a structure of an electron emission unit and a manufacturing process thereof is provided. A display device using the light emission device as a light source is also provided. The light emission device includes a vacuum panel having a first substrate and a second substrate facing each other. A sealing member is between the first and second substrates. Recess portions each have a depth into a side of the first substrate facing the second substrate. Cathode electrodes are in corresponding recesses. Electron emission regions are on corresponding cathode electrodes. A gate electrode is fixed at one side of the first substrate at a distance from the electron emission regions. A light emission unit is at one side of the second substrate. The gate electrode includes a mesh unit having openings for passing through an electron beam and a supporting member surrounding the mesh unit.Type: GrantFiled: November 5, 2008Date of Patent: April 24, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Kyu-Won Jung, Hun-Soo Kim, Sang-Jin Lee, Ii-Hwan Kim, Chang-Soo Lee, Myung-Ick Hwang, Hyeong-Rae Seon
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Patent number: 8164248Abstract: An image display apparatus includes a rear plate including electron emitting devices; a face plate including light emitting members, anode electrodes, partition members each disposed between adjacent light emitting members, and strip-shaped resistive members disposed on the partition members and connecting adjacent anode electrodes to one another; and a spacer disposed between the rear plate and the face plate, wherein the partition members include protrusions protruding so as to be closer to the rear plate than portions of the partition members on which the strip-shaped resistive members are disposed, and the spacer contacts the protrusions of the partition members.Type: GrantFiled: November 4, 2009Date of Patent: April 24, 2012Assignee: Canon Kabushiki KaishaInventor: Kouji Yamazaki
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Patent number: 8159120Abstract: A triode field emission device (100) includes a sealed container (110) having a light permeable portion (120), a phosphor layer (130) formed on the light permeable portion in the sealed container, an anode (140) formed on the phosphor layer, a cathode (150) arranged in the sealed container and facing the light permeable portion, and a grid (160) arranged in the sealed container and between the cathode and the anode. The cathode has a carbon nanotube yarn (151) facing toward the light permeable portion configured for serving as an emission source for electrons.Type: GrantFiled: July 12, 2007Date of Patent: April 17, 2012Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yuan-Chao Yang, Yang Wei, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
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Patent number: 8154187Abstract: There is provided a light emitter substrate which can suppress halation by forming a rib between adjacent light-emitting members of respectively different light emitting colors, and at the same time can withdraw a potential difference when a discharge occurs between adjacent metal backs, thereby achieving a desired discharging current suppressing capability. For that purpose, the plural parallel ribs protruding from a substrate are formed, a phosphor is provided between the adjacent ribs, plural divided metal backs are disposed respectively on the phosphors in the direction along the ribs, the metal back is connected to a feeding resistor on the rib by means of a connection conductor, and the feeding resistor is covered by a high-resistance cover member.Type: GrantFiled: August 16, 2011Date of Patent: April 10, 2012Assignee: Canon Kabushiki KaishaInventor: Koji Yamazaki
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Patent number: 8148904Abstract: The present invention relates to a field emission apparatus and a method of driving the field emission apparatus, which has a three-pole structure of dual emitters formed on both first and second electrodes of a rear substrate in order to obviate a distinction between a gate and a cathode, thus enabling dual field emission. In such a field emission apparatus, a ground is formed between an anode and a point of the first and second electrodes of the rear substrate, and a square wave is applied thereto in order to alternately generate field emission in the first and second electrodes, thus increasing a light-emitting area and emission efficiency, decreasing a driving voltage and consumption power, saving the manufacturing cost and manufacturing time, and accomplishing a longer lifespan.Type: GrantFiled: September 6, 2006Date of Patent: April 3, 2012Assignee: Hanwha Chemical CorporationInventors: Dong Wook Yang, Yang Woon Na
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Patent number: 8148888Abstract: A device includes a substrate, an insulating member disposed on a surface of the substrate, a gate, and a cathode. The insulating member has an upper surface apart from the surface of the substrate, and a side surface rising from the surface of the substrate between the upper surface and the surface of the substrate. The gate is disposed on the upper surface of the insulating member. The cathode is disposed on the side surface of the insulating member and has a portion opposing the gate. The side surface of the insulating member on which the cathode is disposed has a protruding portion protruding from an imaginary line connecting a position where the portion opposing the gate lies and a position where the insulating member rises from the surface of the substrate.Type: GrantFiled: October 5, 2010Date of Patent: April 3, 2012Assignee: Canon Kabushiki KaishaInventor: Yohei Hashizume
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Patent number: 8143775Abstract: In one embodiment of the present invention, an electron/photon source is disclosed based on field emission, cathodoluminescent and photo-enhanced field emission, including an evacuated chamber inside a housing, further including an anode and a cathode arranged inside the evacuated chamber. Furthermore, the cathode is arranged to emit electrons when a voltage is applied between the anode and cathode, the anode being arranged to emit light at a first wavelength range when receiving electrons emitted from the cathode, and a wavelength range converting material arranged to receive the emitted light of the first wavelength range and emit light at a second wavelength range. In a novel way, an embodiment of the present invention makes it possible to, in two steps, convert the electrons emitted from the cathode to visible light.Type: GrantFiled: June 28, 2006Date of Patent: March 27, 2012Assignee: Lightlab Sweden ABInventor: Qiu-Hong Hu
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Patent number: 8143776Abstract: An image display apparatus includes a rear plate including an electron-emitting device; and a luminescent screen including a plurality of light-emitting members, a plurality of anode electrodes positioned so as to overlap the light-emitting members, a partition wall member positioned between the light-emitting members adjacent to each other, a stripe-shaped resistance member electrically connecting the anode electrodes adjacent to each other and being positioned on the partition wall member, and a feeding electrode electrically connecting the resistance member to a power supply, wherein the feeding electrode is, on a mesh-shaped base adjacent to the partition wall member, in contact with the resistance member and a terminal of the power supply circuit.Type: GrantFiled: August 4, 2010Date of Patent: March 27, 2012Assignee: Canon Kabushiki KaishaInventor: Ginjirou Toyoguchi
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Patent number: 8125132Abstract: A display apparatus comprises: a rear plate which has an electron-emitting device; a face plate which has an anode electrode and a potential defining electrode; and a plate spacer which is opposite to the anode electrode and the potential defining electrode, between the rear plate and the face plate. An insulative base member of the spacer has a recessed portion which opposes to the anode electrode, the potential defining electrode, and a portion of the face plate between the anode electrode and the potential defining electrode. Thus, electric discharges between the spacer and the anode electrode and between the spacer and the potential defining electrode can be suppressed.Type: GrantFiled: August 18, 2010Date of Patent: February 28, 2012Assignee: Canon Kabushiki KaishaInventors: Akira Hayama, Koichi Tsunoda
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Patent number: 8125135Abstract: A field emission display device (FED) is provided. The FED includes a first substrate, a phosphor layer being in contact with the first substrate, and an anode electrode on the phosphor layer. The FED further includes a second substrate facing the first substrate and including a cathode electrode and an emitter disposed toward the anode electrode.Type: GrantFiled: May 24, 2010Date of Patent: February 28, 2012Assignee: Nanopacific Inc.Inventors: Jung Won Yoo, Mi Sun Kim, Jae Young Park, Young Don Park
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Patent number: 8115207Abstract: Provided are a transistor and a method of manufacturing the transistor, and more particularly, a vacuum channel transistor emitting thermal cathode electrons and a method of manufacturing the vacuum channel transistor. The vacuum channel transistor includes: a motherboard; a micro heater member having a thin-film structure formed on the motherboard; a cathode member having a thin-film structure spaced apart from a center part of the micro heater member by a first interval and formed on the micro heater member; a gate member formed on both outer walls of upper parts of the cathode member; and an anode member spaced apart from the cathode member by a second interval through spacers disposed on the gate member, wherein a vacuum electron passing area is interposed between the cathode member and the anode member by the second interval.Type: GrantFiled: October 27, 2009Date of Patent: February 14, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Dae Yong Kim, Hyun Tak Kim
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Publication number: 20120032581Abstract: It is an object of the present invention to provide a PDP and an FED with excellent visibility and a high level of reliability that each have an antireflective function by which reflection of external light can be reduced. A plurality of adjacent pyramidal-shaped projections and an antireflective layer equipped with a covering film that covers the projections are provided. The reflection of light is prevented by the index of refraction of incident light from external being changed by a pyramid, which is a physical shape, projecting out toward an external side (atmosphere side) of a substrate that is to be used as a display screen as well as by the covering film used to cover the projections being formed of a material that has a higher index of refraction than the index of refraction of the pyramidal projection.Type: ApplicationFiled: October 18, 2011Publication date: February 9, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Yuji EGI, Jiro Nishida, Takeshi Nishi
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Patent number: 8110976Abstract: A method of preparing a field electron emitter includes preparing an aqueous solution including a carbon nanotube-nucleic acid composite, preparing a substrate to receive the carbon nanotube-nucleic acid composite, and electrophoresis-depositing the carbon nanotube-nucleic acid composite onto the substrate.Type: GrantFiled: July 8, 2009Date of Patent: February 7, 2012Assignees: Samsung Electronics Co., Ltd., Korea University Research and Business FoundationInventors: Yong-chul Kim, Byeong-kwon Ju, Seung-wook Kim
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Publication number: 20120007493Abstract: To provide a light emitter substrate which is characterized in that discharge current reduction performance is excellent, plural phosphors are arranged in an X direction and a Y direction on a substrate, metal backs are arranged on the phosphors, ribs extending in the Y direction are arranged between the phosphors adjacent in the X direction, first resistors to electrically connect the metal backs adjacent in the Y direction are formed on the ribs respectively, and second resistors to electrically connect the metal backs adjacent in the X direction are formed under the ribs respectively.Type: ApplicationFiled: September 21, 2011Publication date: January 12, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Yukihiro Inoue
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Patent number: 8093795Abstract: Provided is a field emission device, and more particularly, a field emission back light unit which makes an interconnection connected with an external electrode simple and capable of local dimming. To this end, a cathode structure for the field emission back light unit includes a plurality of data electrodes formed on a cathode substrate and spaced apart from one another, an insulating layer formed on the data electrodes, and having exposure regions exposing the predetermined data electrodes, cathode electrodes formed on the insulating layer and electrically connected with the data electrodes through the exposure regions, and at least one field emitter formed on the cathode electrodes, wherein a cathode block is defined based on the cathode electrodes electrically isolated from one another, and brightness of each cathode block can be controlled according to current supplied through the data electrode.Type: GrantFiled: June 25, 2008Date of Patent: January 10, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Jin Woo Jeong, Yoon Ho Song, Dae Jun Kim
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Patent number: 8093796Abstract: An electron beam apparatus 11 comprises a substrate 1, a first electrode wiring 2 formed on the substrate 1, an insulating layer 4 covering the first electrode wiring 2, a second electrode wiring 3 formed on the insulating layer 4 so as to cross the first electrode wiring 2, and on the substrate 1, an electron emitting device 6 located distant from an electrode wiring crossing region 9 where the first electrode wiring 2 and the second electrode wiring 3 cross each other, and connected to both the first electrode wiring 2 and the second electrode wiring 3 so as to receive drive energy from the first electrode wiring 2 and the second electrode wiring 3, wherein a void 5 is formed between the first electrode wiring 2 and the second electrode wiring 3 in at least a part of the electrode wiring crossing region 9.Type: GrantFiled: April 15, 2010Date of Patent: January 10, 2012Assignee: Canon Kabushiki KaishaInventor: Yohei Hashizume
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Patent number: 8089084Abstract: A light emitting device can be characterized as including a light emitting diode configured to emit light and a phosphor configured to change a wavelength of the light. The phosphor substantially covers at least a portion of the light emitting diode. The phosphor includes a compound having a host material. Divalent copper ions and oxygen are components of the host material.Type: GrantFiled: April 4, 2008Date of Patent: January 3, 2012Assignee: Seoul Semiconductor Co., Ltd.Inventors: Gundula Roth, Walter Tews, Chung Hoon Lee
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Patent number: 8089205Abstract: A wiring board has a substrate having a groove on its surface, a first wiring placed in the groove, a plurality of bonding members located at mutually separated positions and each of which bonds the first wiring and the substrate. A gap is located between the first wiring and the surface of the groove.Type: GrantFiled: May 31, 2007Date of Patent: January 3, 2012Assignee: Canon Kabushiki KaishaInventors: Yoshio Suzuki, Kazuya Ishiwata
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Patent number: 8089428Abstract: In an image display apparatus using an FED or an organic EL element, image display that is high in illumination uniformity and high in image quality can be performed. A display element with a matrix structure which conducts linear sequential driving which determines the luminance by a current is used, a threshold voltage of a cathode line immediately before one select period has been terminated where a control electrode line is sequentially driven is measured by a threshold voltage measuring section, the measured threshold voltage is recorded for each of the pixels, and a driving signal at the time of selecting the pixel is corrected by using the value of the recorded threshold voltage, to thereby control electric charge that is emitted from a cathode.Type: GrantFiled: October 24, 2006Date of Patent: January 3, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Tomio Yaguchi, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takahiko Muneyoshi, Susumu Sasaki, Shoichi Uchino, Akiko Iwata, Makoto Okai, Tetsuya Yamazaki, Nobuaki Hayashi
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Patent number: 8080932Abstract: An electron-emitting device of the present invention has an electron-emitting film, and the electron-emitting film is composed of a first layer made of a first material, and a plurality of particles made of a second material whose electric resistivity is lower than that of the first material and provided into the first layer. The first material contains oxygen and nitrogen. A method for manufacturing the electron-emitting device according to the present invention has a step of forming the electron-emitting film, and the electron-emitting film forming step includes a step of forming the plurality of particles made of a second material whose electric resistivity is lower than that of a first material into the first layer made of the first material containing oxygen and nitrogen.Type: GrantFiled: May 2, 2008Date of Patent: December 20, 2011Assignee: Canon Kabushiki KaishaInventors: Shunsuke Murakami, Ryoji Fujiwara, Noriaki Oguri, Yasushi Shimizu
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Patent number: 8072133Abstract: It aims to improve, in a light emitter substrate which has a resistor for connecting electrodes adjacent in a row direction, withstand discharge performance of the resistor. In the light emitter substrate which comprises a substrate, plural light-emitting members which are positioned in matrix on the substrate, plural electrodes each of which covers at least one of the light-emitting members and which are positioned in matrix, and a row-direction resistor which is positioned between the electrodes adjacent in the row direction and connects these electrodes to each other, a row-direction separated distance Gx? between the electrodes adjacent in the row direction at a connecting portion between the electrodes and the row-direction resistor is larger than a row-direction separated distance Gx between the electrodes adjacent in the row direction at a portion covering the light-emitting members (Gx?>Gx).Type: GrantFiled: June 2, 2009Date of Patent: December 6, 2011Assignee: Canon Kabushiki KaishaInventors: Koji Yamazaki, Takashi Date, Yukihiro Inoue
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Publication number: 20110285272Abstract: A field emission display device (FED) is provided. The FED includes a first substrate, a phosphor layer being in contact with the first substrate, and an anode electrode on the phosphor layer. The FED further includes a second substrate facing the first substrate and including a cathode electrode and an emitter disposed toward the anode electrode.Type: ApplicationFiled: May 24, 2010Publication date: November 24, 2011Applicant: NANOPACIFIC INC.Inventors: Jung Won YOO, Mi Sun KIM, Jae Young PARK, Young Don PARK
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Patent number: 8044568Abstract: To provide a light emitter substrate which is characterized in that discharge current reduction performance is excellent, plural phosphors are arranged in an X direction and a Y direction on a substrate, metal backs are arranged on the phosphors, ribs extending in the Y direction are arranged between the phosphors adjacent in the X direction, first resistors to electrically connect the metal backs adjacent in the Y direction are formed on the ribs respectively, and second resistors to electrically connect the metal backs adjacent in the X direction are formed under the ribs respectively.Type: GrantFiled: August 28, 2009Date of Patent: October 25, 2011Assignee: Canon Kabushiki KaishaInventor: Yukihiro Inoue
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Publication number: 20110254434Abstract: A display apparatus according to the present invention has a plurality of electroconductive layers outside of an image display area. Mutually adjacent ones of the electroconductive layers are electrically connected by a resistor. The resistor has a first region, and a second region which is more separated from the image display area than the first region. The area of the second region per unit length in the direction separating from the image display area is smaller than the area of the first region.Type: ApplicationFiled: June 29, 2011Publication date: October 20, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, CANON KABUSHIKI KAISHAInventors: HIROAKI IBUKI, MASAHIRO YOKOTA, KEIJI SUZUKI, YOSHIYUKI KITAHARA
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Publication number: 20110254449Abstract: Excimers are formed in a high pressure gas by applying a potential between a first electrode (14, 214) and a counter electrode (25, 226) so as to impose an electric field within the gas, or by introducing high energy electrons into the gas using an electron beam. A phosphor for converting the wavelength of radiation emitted from the formed excimers is disposed within the gas and outside a region (62, 162) where the excimers are expected to be formed, so as to avoid degradation of the phosphor.Type: ApplicationFiled: May 15, 2009Publication date: October 20, 2011Applicant: RUTGERS, THE STATE UNIVERSITYInventors: Daniel E. Murnick, Nazieh Mohammad Masoud, Richard Riman
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Patent number: 8040038Abstract: Disclosed herein is a high frequency, cold cathode, triode-type, field-emitter vacuum tube including a cathode structure, an anode structure spaced from the cathode structure, and a control grid, wherein the cathode structure and the anode structure are formed separately and bonded together with the interposition of spacers, and the control grid is integrated in the anode structure.Type: GrantFiled: December 29, 2006Date of Patent: October 18, 2011Assignee: Selex Sistemi Integrati S.p.A.Inventors: Francesca Brunetti, Aldo Di Carlo, Massimiliano Lucci, Silvia Orlanducci, Riccardo Riccitelli, Maria Letizia Terranova
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Patent number: 8035293Abstract: A light emitting device has an enclosure with a face portion, a cold cathode within the enclosure, a phosphor layer disposed on an interior surface of the face portion, an extracting grid between the cold cathode and the phosphor layer and a defocusing grid between the extracting grid and the phosphor layer. Electrons emitted from the cold cathode are defocused by the defocusing grid and impact the phosphor layer when an electric field is created between the cold cathode and the phosphor layer due to applied voltages at the cold cathode, extracting grid, defocusing grid and phosphor layer. The phosphor layer emits light through the face portion in response to electrons incident thereon. Secondary electron emission may also occur resulting in increased electron impact upon the phosphor layer, thereby increasing light output. A mirror layer may be included to reflect light toward the face portion of the light emitting device.Type: GrantFiled: December 16, 2005Date of Patent: October 11, 2011Assignee: Vu1 CorporationInventor: Stalimir Popovich
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Patent number: 8035290Abstract: A fluorescent display device includes an aluminum wiring layer formed on an insulating substrate; an insulating layer formed on the aluminum wiring layer, the insulating layer being provided with a through-hole disposed on the aluminum wiring layer; a conductive layer filled in the through-hole. The fluorescent display device further includes an anode conductor formed on the insulating layer to cover the conductive layer and a phosphor layer formed on the anode conductor. The conductive layer is formed of solid mixture containing aluminum and graphite.Type: GrantFiled: September 12, 2008Date of Patent: October 11, 2011Assignee: Futaba CorporationInventors: Masahiro Kato, Toshiyuki Misonou, Masashi Miyagawa
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Patent number: 8035294Abstract: In an electron beam apparatus including an electron emission element and an anode, the electron emission element includes a gate 5 and a cathode 6 having a projection portion. The gate 5 and the cathode 6 are located in a surface of an insulating member 3 including a recess 7. The projection portion of the cathode 6 has a height distribution, and an average value dav (m) of a shortest distance between the gate 5 and the projection portion of the cathode 6 and a difference h (m) between the average value dav and a shortest distance dmin (m) from the gate 5 to a maximum convex portion of the projection portion of the cathode 6 satisfy a relationship of h/dav<0.39.Type: GrantFiled: April 29, 2010Date of Patent: October 11, 2011Assignee: Canon Kabushiki KaishaInventors: Hirotomo Taniguchi, Toshiharu Sumiya, Hisanobu Azuma, Takanori Suwa
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Patent number: 8035292Abstract: A planar light source device includes a lower substrate, a cathode electrode a carbon nanotube, an upper substrate, a fluorescent layer, and an anode electrode. The cathode electrode is on the lower substrate. The carbon nanotube is electrically connected to the cathode electrode. The upper substrate faces the lower substrate. The fluorescent layer and the anode electrode are formed on the upper substrate. Therefore, the planar light source device generates light without using mercury.Type: GrantFiled: September 14, 2010Date of Patent: October 11, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hyeong-Suk Yoo, Seung-Ki Joo, Myong-Hi Rhee, In-Sun Hwang, Hae-Il Park, Sung-Lak Choi
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Patent number: 8035291Abstract: An electron emission film having a pattern of diamond in X-ray diffraction and formed of a plurality of diamond fine grains having a grain diameter of 5 nm to 10 nm is formed on a substrate. The electron emission film can restrict the field intensity to a low level when it causes an emission current to flow, and has a uniform electron emission characteristic.Type: GrantFiled: May 13, 2010Date of Patent: October 11, 2011Assignees: Kochi Industrial Promotion Center, Casio Computer Co., Ltd.Inventors: Kazuhito Nishimura, Hideki Sasaoka
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Publication number: 20110234086Abstract: A field emission device includes: a first substrate on which a gate electrode line, a cathode line, and an electron emission source are formed; a second substrate disposed to face the first substrate, and on which an anode and a phosphor layer are formed; and a side frame surrounding an area between the first substrate and the second substrate, and forming a sealed internal space, wherein the first substrate and the second substrate respectively comprise a first protrusion part and a second protrusion part that protrude outside the side frame in the same direction, wherein a rear terminal part for applying a voltage to the gate electrode line and the cathode line is formed on the first protrusion part, wherein an anode terminal for applying a voltage to the anode is formed on the second protrusion part.Type: ApplicationFiled: March 18, 2011Publication date: September 29, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun-seung CHO, Hak-cheol YANG, Jun-ho SUNG, Ki-bum SEONG
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Publication number: 20110234085Abstract: A field emission device including: a first substrate on which at least one gate electrode line, at least one cathode line, and at least one electron emission source are formed; a second substrate on which an anode and a phosphor layer are formed; a side frame which is interposed between the first substrate and the second substrate and surrounds an area between the first substrate and the second substrate to form a sealed internal space, wherein the first substrate is offset from the second substrate by a predetermined length in a first direction perpendicular to a direction in which the first substrate and the second substrate are spaced apart from each other by the side frame; a rear terminal part through which a voltage is applied to the gate electrode line and the cathode line, and which is formed on a protruding region of the first substrate protruding by the predetermined length; and an anode terminal part through which a voltage is applied to the anode, wherein the anode terminal has a first end which cType: ApplicationFiled: March 18, 2011Publication date: September 29, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun-seung Cho, Jai-kyung Kim, Yong-gun Won, Seung-kwon Ryu, Dong-Su Chang
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Patent number: 8022611Abstract: There is provided a light emitter substrate which can suppress halation by forming a rib between adjacent light-emitting members of respectively different light emitting colors, and at the same time can withdraw a potential difference when a discharge occurs between adjacent metal backs, thereby achieving a desired discharging current suppressing capability. For that purpose, the plural parallel ribs protruding from a substrate are formed, a phosphor is provided between the adjacent ribs, plural divided metal backs are disposed respectively on the phosphors in the direction along the ribs, the metal back is connected to a feeding resistor on the rib by means of a connection conductor, and the feeding resistor is covered by a high-resistance cover member.Type: GrantFiled: July 29, 2009Date of Patent: September 20, 2011Assignee: Canon Kabushiki KaishaInventor: Koji Yamazaki
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Patent number: 8022608Abstract: By applying a drive voltage Vf [V] between first and second conductive films, when electrons are emitted by the first conductive film, an equipotential line of 0.5 Vf [V] is inclined toward the first conductive film, rather than toward the second conductive film, in the vicinity of the electron emitting portion of the first conductive film, in a cross section extending across the electron emitting portion and the portion of the second conductive film located nearest the electron emitting portion. The present invention improves electron emission efficiency.Type: GrantFiled: June 10, 2009Date of Patent: September 20, 2011Assignee: Canon Kabushiki KaishaInventors: Koki Nukanobu, Keisuke Yamamoto, Tamaki Kobayashi, Takuto Moriguchi
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Patent number: 8018133Abstract: A display apparatus according to the present invention has a plurality of electroconductive layers outside of an image display area. Mutually adjacent ones of the electroconductive layers are electrically connected by a resistor. The resistor has a first region, and a second region which is more separated from the image display area than the first region. The area of the second region per unit length in the direction separating from the image display area is smaller than the area of the first region.Type: GrantFiled: December 20, 2007Date of Patent: September 13, 2011Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Hiroaki Ibuki, Masahiro Yokota, Keiji Suzuki, Yoshiyuki Kitahara
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Patent number: 8013511Abstract: An electron-emitting device has a pair of device electrodes formed on a substrate and an electroconductive film connected to the device electrodes. The electroconductive film has a first gap between the device electrodes and has a carbon film having a second gap at least in the first gap. The substrate is formed by stacking a nitrogen-contained activation suppressing layer and an activation accelerating layer having a nitrogen containing ratio smaller than that of the activation suppressing layer onto a base and has nitrogen containing ratio distribution in the activation suppressing layer in a film thickness direction. The nitrogen containing ratio of the activation suppressing layer at the activation accelerating layer side is smaller than that at the base side.Type: GrantFiled: May 11, 2009Date of Patent: September 6, 2011Assignee: Canon Kabushiki KaishaInventors: Eiji Takeuchi, Takeo Tsukamoto
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Patent number: 8008848Abstract: A field emitting device includes a base substrate and at least three light emitting units and configured to respectively emit at least three lights having different wavelengths from each other. Each light emitting unit includes a first electrode arranged on the base substrate, a field emitter arranged on the base substrate, an insulating layer arranged on the first electrode and including an opening to expose the field emitter, a second electrode arranged on the insulating later to control an operation of the field emitter, a third electrode facing the first electrode, and a fluorescent layer arranged on a surface of the third electrode facing the first electrode. A transmissive area is located between the florescent layers of two adjacent light emitting units.Type: GrantFiled: July 16, 2010Date of Patent: August 30, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Haeil Park, Jae Byung Park, Donchan Cho, Jinseob Byun, Sung-Jin Hong, Yu-Kwan Kim, Seon-Tae Yoon, Gunwoo Kim, Seul Lee
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Patent number: 8007333Abstract: In accordance with the invention, there are field emission light emitting devices and methods of making them. The field emission light emitting device can include a plurality of spacers, each connecting a substantially transparent substrate to a backing substrate. The device can also include a plurality of pixels, wherein each of the plurality of pixels can include one or more first electrodes disposed over the substantially transparent substrate, a light emitting layer disposed over each of the one or more first electrodes, and one or more second electrodes disposed over the backing substrate, wherein the one or more second electrodes and the one or more first electrode are disposed at a predetermined gap in a low pressure region. Each of the plurality of pixels can further include one or more nanocylinder electron emitter arrays disposed over each of the one or more second electrodes.Type: GrantFiled: June 6, 2008Date of Patent: August 30, 2011Assignee: Xerox CorporationInventors: David H. Pan, Fa-Gung Fan
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Patent number: 7994700Abstract: An image display apparatus includes a rear plate having a plurality of electron-emitting devices, a face plate having a plurality of pixels, each pixel having one or more phosphors that emit fluorescence in response to electrons emitted from the electron-emitting devices, and a drive circuit for driving the electron-emitting devices. At least one of the phosphors is CaAlSiN3:Eu2+; and the electrons are supplied to the pixels for 2 ?s to 70 ?s from the electron-emitting devices on a scan basis, each of which devices supplies current to one or more of the phosphors.Type: GrantFiled: February 20, 2009Date of Patent: August 9, 2011Assignee: Canon Kabushiki KaishaInventor: Shoshiro Saruta
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Patent number: 7994699Abstract: An image display apparatus includes at least one electron-emitting device, at least one wiring arranged to apply a voltage to the electron-emitting device, a getter disposed on the wiring, and an insulating layer interposed between the getter and wiring. The getter has penetrating portions formed in a part thereof corresponding to a region where an image is displayed in the image display apparatus. The penetrating portions are at least one opening, and an area of an inner wall surface of the getter facing the opening is substantially the same as or larger than an area of the opening.Type: GrantFiled: February 9, 2009Date of Patent: August 9, 2011Assignee: Canon Kabushiki KaishaInventor: Kota Iwasaki