Vacuum-type Tube Patents (Class 313/495)
  • Patent number: 8022611
    Abstract: 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: Grant
    Filed: July 29, 2009
    Date of Patent: September 20, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koji Yamazaki
  • Patent number: 8016630
    Abstract: A substrate 200 is provided with conductive cathode tracks and a field electron emission material on the tracks. Septa 201 and pillars 202 are provided as raised elements over the emission material. An electrically insulating layer is formed over the emission material and raised elements 201, 202, such that boundary walls are formed in the insulating layer where it contacts the raised elements. The raised elements 201, 202 are then removed, to leave emitter cells and voids for other components, defined by the boundary walls with the insulating layer. A gate electrode is provided over the insulating layer.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: September 13, 2011
    Assignee: Tatung Company
    Inventors: Chi-Tsung Lo, Tzung-Han Yang, Richard Allan Tuck
  • Patent number: 8018133
    Abstract: 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: Grant
    Filed: December 20, 2007
    Date of Patent: September 13, 2011
    Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Ibuki, Masahiro Yokota, Keiji Suzuki, Yoshiyuki Kitahara
  • Publication number: 20110215708
    Abstract: In order to provide a phosphor for a low-voltage electron beam and a vacuum fluorescent display apparatus in which the phosphor is used, a deposition layer is formed on a surface of a main body of a phosphor shown by the following chemical formula (1), the deposition layer being a plurality of oxide layers sequentially deposited on the surface of the phosphor main body. The phosphor for a low-voltage electron beam contains no cadmium, but has exceptional high-temperature exposure characteristics, as well as prolonged service life and higher brightness. Ca1-xSrxTiO3:Pr,M ??(1) where M is at least one element selected from Al, Ga, In, Mg, Zn, Li, Na, K, Gd, Y, La, Cs, and Rb; and 0?x?1.
    Type: Application
    Filed: February 17, 2011
    Publication date: September 8, 2011
    Applicants: Noritake Itron Corporation, Noritake Co., Limited
    Inventor: Koji Kato
  • Patent number: 8013510
    Abstract: An electron emission device includes a cathode device and a gate electrode. The gate electrode is separated and insulted from the cathode device. The gate electrode includes a carbon nanotube layer having a plurality of spaces. A display device includes a cathode device, an anode device spaced from the cathode electrode and a gate electrode. The gate electrode is disposed between the cathode device and the anode device. The cathode device, the anode device and the gate electrode are separated and insulted from each other. The gate electrode comprises a carbon nanotube layer having a plurality of spaces.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: September 6, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Lin Xiao, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 8013512
    Abstract: A flat panel display including: a plurality of electrically addressable pixels; a plurality of thin-film transistor driver circuits each being electrically coupled to an associated at least one of the pixels, respectively; a passivating layer on the thin-film transistor driver circuits and at least partially around the pixels; a conductive frame on the passivating layer; and, a plurality of nanostructures on the conductive frame; wherein, exciting the conductive frame and addressing one of the pixels using the associated driver circuit causes the nanostructures to emit electrons that induce the one of the pixels to emit light.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: September 6, 2011
    Assignee: Copytele, Inc.
    Inventors: Denis A. Krusos, Frank J. DiSanto
  • Patent number: 8011990
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: September 6, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, David Herbert Roach
  • Patent number: 8013509
    Abstract: A base body includes a first part and a second part. The second part has a lower thermal conductivity than the first part and is arranged adjacently to the first part. A first conductive film is formed on the first part and a second conductive film is formed on the second part. At least part of a gap is located above a boundary between the first part and the second part.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: September 6, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takuto Moriguchi, Koki Nukanobu, Takahiro Sato, Takeo Tsukamoto
  • Patent number: 8013511
    Abstract: 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: Grant
    Filed: May 11, 2009
    Date of Patent: September 6, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Eiji Takeuchi, Takeo Tsukamoto
  • Patent number: 8008849
    Abstract: A flat panel display including: a plurality of electrically addressable pixels; a plurality of thin-film transistor driver circuits each being electrically coupled to an associated at least one of the pixels, respectively; a passivating layer on the thin-film transistor driver circuits and at least partially around the pixels; a conductive frame on the passivating layer; and, a plurality of nanostructures on the conductive frame; wherein, exciting the conductive frame and addressing one of the pixels using the associated driver circuit causes the nanostructures to emit electrons that induce the one of the pixels to emit light.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: August 30, 2011
    Assignee: Copytele, Inc.
    Inventors: Frank J. DiSanto, Denis A. Krusos
  • Patent number: 8007336
    Abstract: A method for manufacturing a field emission element includes the following steps. The insulating substrate is provided. At least one grid, a first electrode and a second electrode are formed on the insulating substrate. The first and second electrodes are within the grid. The insulating substrate having at least one grid, the first electrode and the second electrode is covered with a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotubes successively extended from the second electrode to the first electrode. The carbon nanotubes between the first electrode and the second electrode are cut to form a plurality of substantially parallel electron emitters in the at least one grid. One end of each electron emitter is electrically connected to the second electrode and opposite end of each electron emitter faces towards the first electrode.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: August 30, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 8007333
    Abstract: 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: Grant
    Filed: June 6, 2008
    Date of Patent: August 30, 2011
    Assignee: Xerox Corporation
    Inventors: David H. Pan, Fa-Gung Fan
  • Patent number: 8008848
    Abstract: 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: Grant
    Filed: July 16, 2010
    Date of Patent: August 30, 2011
    Assignee: 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
  • Patent number: 8004173
    Abstract: An antistatic film installed in an airtight vessel containing an electron source of an electron-generating device such as a picture display unit has a structure comprising an image of conductor or semiconductor particles with particle diameters of 0.5 to 10 nm dispersed in a medium containing a nitride, an oxide or both; and thereby improves controllability for a resistivity value, stability and reproducibility, and the adequate temperature characteristics of resistance.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: August 23, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Sato, Yasushi Shimizu, Noriaki Oguri
  • Patent number: 8004171
    Abstract: A plasma display panel including a front panel having a first substrate, a first electrode, a first dielectric layer and a protective layer wherein the first electrode is formed on the first substrate, the first dielectric layer is formed over the first substrate so as to cover the first electrode, and the protective layer is formed on the first dielectric layer, and a rear panel having a second substrate, a second electrode, a second dielectric layer and a phosphor layer wherein the second electrode is formed on the second substrate, the second dielectric layer is formed over the second substrate so as to cover the second electrode, the phosphor layer is formed on the second dielectric layer.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: August 23, 2011
    Assignee: Panasonic Corporation
    Inventors: Hideki Yamashita, Hironobu Inoue, Motoi Hatanaka, Tomohiro Okumura
  • Patent number: 8004172
    Abstract: A semiconductor light emitting apparatus includes an elongated hollow wavelength conversion tube that includes an elongated wavelength conversion tube wall having wavelength conversion material, such as phosphor, dispersed therein. A semiconductor light emitting device is oriented to emit light inside the elongated hollow wavelength conversion tube to impinge upon the elongated wavelength conversion tube wall and the wavelength conversion material dispersed therein. The elongated hollow wavelength conversion tube may have an open end, a crimped end, a reflective end, and/or other configurations. Multiples tubes and/or multiple semiconductor light emitting devices may also be used in various configurations. Related assembling methods are also described.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: August 23, 2011
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, John Adam Edmond
  • Patent number: 8002602
    Abstract: A manufacturing method of a vacuum airtight container includes a baking step of baking, in a vacuum atmosphere, a container in which a first non-evaporable getter and a second non-evaporable getter having an activation temperature higher than that of the first non-evaporable getter are disposed. The baking step further includes steps of baking the entire container by increasing the temperatures of the container to a temperature T1 and holding the temperature T1, which is equal to or higher than an activation temperature of the first non-evaporable getter and is lower than an activation temperature of the second non-evaporable getter. After holding the temperature T1, the entire container is baked by increasing the temperature of the container to a temperature T2, which is higher than the activation temperature of the second non-evaporable getter.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: August 23, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tokutaka Miura, Mitsutoshi Hasegawa, Yoichi Ando
  • Patent number: 8002603
    Abstract: Described herein are methods of manufacturing an electrode and emitter in a field emission device, and devices formed from the methods. Compositions useful for the manufacture of an electrode and emitter in a field emission device are also described.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: August 23, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Haixin Yang, Lap-Tak Andrew Cheng, Terry Roland Suess, Chien Lung Weng
  • Patent number: 7994696
    Abstract: An electron emission device includes a base substrate, at least one isolation layer on the base substrate, the isolation layer having a first lateral side and a second lateral side opposite the first lateral side, first and second electrodes on the base substrate along the first and second lateral sides of the isolation layer, respectively, a first electron emission layer between the first electrode and the first lateral side of the isolation layer, and a second electron emission layer between the second electrode and the second lateral side of the isolation layer.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: August 9, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyun-Ki Park, Hee-Sung Moon, Yoon-Jin Kim, Jae-Myung Kim, Kyu-Nam Joo, So-Ra Lee
  • Patent number: 7994699
    Abstract: 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: Grant
    Filed: February 9, 2009
    Date of Patent: August 9, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kota Iwasaki
  • Patent number: 7994701
    Abstract: An electron-emitting device according to this invention has a cathode electrode, a first electrode, a second electrode, an insulating layer, a gate electrode, and an electron-emitting member. The gate electrode, the insulating layer, and the first electrode respectively have an opening communicating with each other. The electron-emitting member is provided on the cathode electrode, and at least a portion of the electron-emitting member is exposed in the opening. The second electrode is provided in the opening of the first electrode and electrically connected to the cathode electrode.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: August 9, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoji Teramoto, Ryoji Fujiwara, Michiyo Nishimura, Kazushi Nomura, Shunsuke Murakami
  • Patent number: 7994700
    Abstract: 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: Grant
    Filed: February 20, 2009
    Date of Patent: August 9, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shoshiro Saruta
  • Patent number: 7994697
    Abstract: A light emission device includes a vacuum chamber including a first substrate, a second substrate spaced from and facing the first substrate, and a sealing member between the first substrate and the second substrate. An electron emission unit is on the first substrate, the electron emission unit including a plurality of electron emission elements. A light emission unit is on the second substrate, the light emission unit including a phosphor layer. A barrier is spaced from the sealing member between the first substrate and the second substrate. At least one stud pin is fixed on at least one of the sealing member and the barrier and a getter unit is attached to the at least one stud pin, the getter unit fixed between the sealing member and the barrier.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: August 9, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Sang-Hun Park
  • Patent number: 7994698
    Abstract: An electron emitting device includes an amorphous electron supply layer, an insulating layer formed on the electron supply layer, and an electrode formed on the insulating layer. The electron emits device emitting electrons when an electric field is applied between the electron supply layer and the electrode. The electron emitting device includes a concave portion provided by notching the electrode and the insulating layer to expose the electron supply layer, and a carbon layer covering the electrode and the concave portion except for an inner portion of an exposed surface 4a of the electron supply layer and being in contact with an edge portion of the exposed surface of the electron supply layer.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: August 9, 2011
    Assignee: Pioneer Corporation
    Inventors: Ryota Tanaka, Nobuyasu Negishi, Kazuto Sakemura, Yoshiyuki Okuda, Tomonari Nakada, Atsushi Watanabe, Takamasa Yoshikawa, Kiyohide Ogasawara
  • Patent number: 7990043
    Abstract: A field emission cathode structure includes a dielectric layer, a field emission unit, a grid electrode, and a conductive layer. The dielectric layer is positioned on the insulating substrate and defines a cavity. A field emission unit is attached on the cathode electrode and received in the cavity of the dielectric layer. The field emission unit is electrically attached to the cathode electrode. The grid electrode is located on the dielectric layer, and electrons emitted from the field emission unit emit through the grid electrode. The conductive layer is electrically attached to the grid electrode and insulated from the field emission unit. A field emission display device using the above-mentioned field emission cathode structure is also provided.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: August 2, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Jie Tang, Hai-Yan Hao, Qi Cai, Xing Zhang, Shuai Liu, Bing-Chu Du, Liang Liu, Shou-Shan Fan
  • Patent number: 7990042
    Abstract: A field emission device includes a transparent plate, an insulating substrate, one or more grids located on the insulating substrate. Each grid includes a first, second, third and fourth electrode down-leads and a pixel unit. The first, second, third and fourth electrode down-leads are located on the periphery of the grid. The first and the second electrode down-leads are parallel to each other. The third and the fourth electrode down-leads are parallel to each other. The pixel unit includes a phosphor layer, a first electrode, a second electrode and at least one electron emitter. The first electrode and the second electrode are separately located. The first electrode is electrically connected to the first electrode down-lead, and the second electrode is electrically connected to the third electrode down-lead. The phosphor layer is located on the corresponding first electrode.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: August 2, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Shou-Shan Fan, Liang Liu, Kai-Li Jiang
  • Patent number: 7985114
    Abstract: A method for making a field emission lamp generally includes the steps of: (a) providing a cathode emitter; (b) providing a transparent glass tube having a carbon nanotube transparent conductive film and a fluorescent layer, wherein the carbon nanotube transparent conductive film and the fluorescent layer are both disposed on an inner surface of the transparent glass tube; (c) providing a first glass feedthrough, a second glass feedthrough, and a nickel pipe, wherein the first glass feedthrough has an anode down-lead pad and an anode down-lead pole connected to the anode down-lead pad, and the second glass feedthrough has a cathode down-lead pole; (d) securing the nickel pipe to one end of the cathode emitter and securing the other end of the cathode emitter to one end of the cathode down-lead pole of the second glass feedthrough; and (e) melting and assembling the first and second glass feedthroughs to ends of the transparent glass tube respectively.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: July 26, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Lin Xiao, Feng Zhu, Liang Liu, Shou-Shan Fan
  • Patent number: 7986080
    Abstract: An electron-emitting device and a fabricating method thereof are provided. First, a substrate, having a first side and a second side which is opposite to the first side, is provided. Afterwards, a first electrode pattern layer is formed on the first side of the substrate. Next, a conductive pattern layer is formed on the substrate and the first electrode pattern layer. After that, an electron-emitting region is formed in the conductive pattern layer. Then, a second electrode pattern layer is formed on the second side of the substrate and partially covers the conductive pattern layer. The fabricating method has a simple fabricating process and a low fabricating cost.
    Type: Grant
    Filed: December 25, 2007
    Date of Patent: July 26, 2011
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chih-Hao Tsai, Kuan-Jung Chen, Fu-Ming Pan, Mei Liu, Chi-Neng Mo
  • Patent number: 7986083
    Abstract: An electron emission device includes a cathode electrode and a gate electrode, the gate electrode is separated and insulated from the cathode, the gate electrode is a CNT layer, and the CNT layer includes at least a carbon nanotube film and a plurality of carbon nanotube reinforcement structures. A display that includes the electron emission device is also disclosed.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: July 26, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Lin Xiao, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 7982382
    Abstract: A thermionic electron source includes a substrate, at least two electrodes, and a thermionic emitter. The electrodes are electrically connected to the thermionic emitter. The thermionic emitter has a film structure. Wherein there a space is defined between the thermionic emitter and the substrate.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: July 19, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 7977859
    Abstract: Degradation of an electron emission element by irradiation of the positive ion generated inside a panel is suppressed. A deflection electrode is periodically disposed, and the electron emission region of an electron emission element is disposed so as not to include a center line between adjacent deflection electrodes, so that an electron beam trajectory is deflected and bombardment or irradiation of the generated positive ion to the electron emission region is prevented.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: July 12, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Mutsumi Suzuki, Toshiaki Kusunoki
  • Patent number: 7973460
    Abstract: A composition for forming an electron emitter, an electron emitter formed using the composition, and a backlight unit including the electron emitter, where dispersion of the electron emission material in the composition is increased, and the composition includes an electron emission material, a vehicle, and carbon-based filler particles.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: July 5, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yoon-Jin Kim, Jae-Myung Kim, Hee-Sung Moon
  • Patent number: 7973461
    Abstract: A light emitting device and a display device using the same. The light emitting device includes: a substrate provided with recesses formed in a stripe pattern; first electrodes disposed inside the recesses in a stripe pattern aligned parallel to the recesses; electron emission regions disposed on the first electrodes; second electrodes disposed in a stripe pattern aligned in a direction crossing the first electrodes and closely fixed to the substrate; and an adhesive member for fixing the second electrodes to the substrate. The second electrodes include mesh portions spaced apart from tops of the electron emission regions in crossing of the first electrodes and the second electrodes, supports surrounding the mesh portions and connected with the substrate, and combining grooves formed at edges of the supports facing the substrate. The adhesive members are disposed in the combining grooves of the second electrodes to connect the second electrodes with the substrate.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: July 5, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Kyung-Sun Ryu
  • Patent number: 7973464
    Abstract: A given field emission element includes a carbon nanotube field emission wire and at least one supporting protective layer coating an outer surface of the carbon nanotube field emission wire. The carbon nanotube field emission wire is selected from a group consisting of a carbon nanotube yarn, a wire-shaped CNT-polymer composite, and a wire-shaped CNT-glass composite. A method for manufacturing the described field emission element includes the steps of: (a) providing one carbon nanotube field emission wire; (b) forming one supporting protective layer on an outer surface of the carbon nanotube field emission wire; and (c) cutting the carbon nanotube field emission wire to a predetermined length and treating the carbon nanotube emission wire to form the field emission element.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: July 5, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Liang Liu, Kai-Li Jiang, Shou-Shan Fan, Caesar Chen, Hsi-Fu Lee, Ga-Lane Chen
  • Patent number: 7973463
    Abstract: There are provided a stable electron-emitting device with less fluctuation in electron-emitting properties and a method of fabricating the electron-emitting device. The electron-emitting device has a substrate; a plurality of columnar first regions respectively orientated substantially perpendicular to the surface of the substrate; a second region provided between the respective first regions higher than the first regions in resistance; and an electron emission layer covering the columnar first regions and the second region.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: July 5, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shunsuke Murakami
  • Patent number: 7969082
    Abstract: It aims to improve electron emission efficiency in an electron beam apparatus which includes laminated electron-emitting devices. To achieve this, there are provided an insulating member which has a concave portion on its surface, a cathode which is positioned astride a side surface of the insulating member and an inner surface of the concave portion, a gate which is positioned opposite to the cathode, and a protruding portion which is formed on the gate. In this constitution, the low potential surface of the cathode which is positioned inside the concave portion is inclined to the side of the gate from the entrance toward the interior of the concave portion.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: June 28, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroko Takada, Jun Iba
  • Patent number: 7969084
    Abstract: A display device is provided including a display panel for displaying an image and a backlight panel for providing light to the display panel. The backlight panel includes a vacuum chamber including a first substrate, a second substrate, and a sealing member. Cathode electrodes are on a side of the first substrate along a first direction with a gap between each other. Gate electrodes are between the cathode electrodes. Electron emission regions are at either sides of the cathode electrodes facing the gate electrodes. A diffusion electrode is above the cathode electrodes and the gate electrodes. An insulator is between the diffusion electrode and the cathode electrodes and between the diffusion electrode and the gate electrodes. Openings are in the diffusion electrode for exposing the electron emission regions. A light emitting unit is on the second substrate.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: June 28, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Il-Hwan Kim, Young-Churl Kim
  • Publication number: 20110148283
    Abstract: A plurality of electron-emitting devices arranged in a matrix, a row wiring that connects electron-emitting portions of electron-emitting devices arranged in the same line to one another, and a column wiring that connects gate connection members of electron-emitting devices arranged in the same column to one another are included. Each of the plurality of gates is positioned at one side of an electron-emitting portion in an arrangement direction in which the plurality of electron-emitting portions are arranged.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Taro Hiroike
  • Patent number: 7965027
    Abstract: To suppress discharge around an anode electrode. Provided is a light-emitting substrate, including a light-emitting member for emitting light by irradiation with an electron, a first electroconductive film stacked on the light-emitting member, a second electroconductive film which is distant from an outer periphery of the first electroconductive film and surrounds the outer periphery of the first electroconductive film, and a dielectric film for covering an end portion of the second electroconductive film which is opposed to the outer periphery of the first electroconductive film.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: June 21, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomoya Onishi
  • Patent number: 7965024
    Abstract: An electron emission device includes a substrate, a first electrode on the substrate, a second electrode electrically insulated from the first electrode, a first insulating layer between the first electrode and the second electrode, an electron emission source hole in the first insulating layer and the second electrode to expose the first electrode, and an electron emission source having a first electron emission material layer on the first electrode in the electron emission source hole and a second electron emission material layer on the first electron emission material layer.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: June 21, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Kwang-Seok Jeong
  • Publication number: 20110141392
    Abstract: A light emitting device includes a vacuum vessel, a recess portion, a cathode electrode, an electron emission region, a gate electrode, and a gate terminal portion. The vacuum vessel includes a first substrate, a second substrate facing the first substrate, and a sealing member disposed between the first substrate and the second substrate. The recess portion is formed to be depressed along a direction on a surface of the first substrate facing the second substrate, and the cathode electrode is formed in the recess portion and extending along the one direction. The electron emission region is formed on the cathode electrode within the recess portion. The gate electrode includes a metal plate on the surface of the first substrate along a direction crossing the cathode electrode at an inner side of the sealing member.
    Type: Application
    Filed: July 1, 2010
    Publication date: June 16, 2011
    Applicant: Samsung SDI Co., Ltd.
    Inventor: Ki-Hyun Noh
  • Patent number: 7960906
    Abstract: Electron emission devices include first electrodes on a substrate extending in a first direction and spaced apart from each other. Second electrodes are on the substrate alternating between the first electrodes and extending in a second direction opposing the first direction. First electron emitters and second electron emitters are on side surfaces of the first electrodes and the second electrodes, respectively. Gaps are formed between the first electron emitters and second electron emitters.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: June 14, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So-Ra Lee, Jae-Myung Kim, Yoon-Jin Kim, Hee-Sung Moon, Kyu-Nam Joo, Hyun-Ki Park, Young-Suk Cho
  • Patent number: 7960907
    Abstract: Provided herein is a light-emitting apparatus which is capable of causing the light emitted at the entire face of a fluorescent material to be exteriorly emitted with no interference and with enhanced light emission efficiency, thereby attaining an exteriorly radiated high brightness light. A cathode electrode 10 is mounted on a periphery of a transmission member 30, the anode electrode 15 is also mounted on a domain opposite to a light transmission member 30, and the surface 16a of the fluorescent material 16 to be mounted on a top layer of the anode electrode 15 is formed with a concave face.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: June 14, 2011
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Hisaya Takahashi, Toshiya Arakawa, Atsushi Namba, Mikio Ono
  • Patent number: 7960904
    Abstract: The present invention relates to a field emission device comprising an anode and a cathode, wherein said cathode includes carbon nanotubes nanotubes which have been subjected to energy, plasma, chemical, or mechanical treatment. The present invention also relates to a field emission cathode comprising carbon nanotubes which have been subject to such treatment. A method for treating the carbon nanotubes and for creating a field emission cathode is also disclosed. A field emission display device containing carbon nanotube which have been subject to such treatment is further disclosed.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: June 14, 2011
    Assignee: Hyperion Catalysis International, Inc.
    Inventors: Mikio Takai, Alan B. Fischer, Chunming Niu, Howard G. Tennent, Robert Hoch, Hans Biebuyck
  • Patent number: 7960914
    Abstract: An image display element includes: a front panel; a back panel opposite thereto; plural pixels arranged in a matrix between the panels; and plural electrodes for controlling the pixels. The panels are bonded with the pixels and the electrodes interposed therebetween. The electrodes are connected to a driving circuit via metal film wires. The back panel is divided so as to expose electrode terminals, and a groove part V-shaped in cross section is formed at the divided portion. The metal film wires are formed on the top surface of the back panel, and the electrode terminals and the metal film wires are connected by a conductive paste coated along the tilt surfaces forming the groove part. A contact resistance reducing means is disposed at the connection part interface between the electrode terminal and the conductive paste.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: June 14, 2011
    Assignees: Mitsubishi Electric Corporation, Tohoku Pioneer Corporation
    Inventors: Zenichiro Hara, Satoru Kiridoshi, Suguru Nagae, Takanori Okumura, Yoshiyuki Suehiro, Nobuo Terazaki, Jun Sugahara, Ryota Oki, Takeshi Yoshida, Yutaka Saito, Yuji Saito, Toshinao Yuki, Hiroyuki Sato, Yoshinori Fukuda, Yosuke Sato, Masami Kimura
  • Patent number: 7960905
    Abstract: The present invention provides a diamond electron source exerting stable and excellent electron emission characteristics, which can be used for a cold cathode surface structure operable with low voltage and a method for producing the diamond electron source. Specifically, the diamond electron source having a carbon-terminated structure has a structure composed of an electrode and a diamond film and emits electrons or electron beams from the diamond film when voltage is applied to the electrode. The diamond film is made of diamond having a carbon-terminated structure. The method for producing the diamond electron source is also provided herein.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: June 14, 2011
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Takatoshi Yamada, Christoph Nebel, Shinichi Shikata
  • Patent number: 7956523
    Abstract: A carbon film is coated over the surface of a spacer. The carbon film has the following three features when the binding state of carbon is analyzed by X-ray photoelectron spectroscopy: (a) an integral area of a region of 284.5 eV or below is 27% or less of an integral area attributed to carbon, (b) an integral area of a region of 286.0 eV-287.0 eV is 18% or less thereof, and (c) an integral area of a region of 287.0 eV or above is 9% or more thereof.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: June 7, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Kuroda, Nobuhiro Ito
  • Patent number: 7952265
    Abstract: An electron-emitting device, comprising: a pair of device electrodes formed on an insulating substrate; and a conductive film formed to connect the device electrodes and having an electron-emitting portion, wherein the conductive film has a thickness of 3 nm to 50 nm and is made of precious metal and oxide of base metal, a percentage of the base metal among metals contained in the conductive film is 30 mol % or more, and the conductive film has a concentration gradient of the oxide of the base metal in a thickness direction.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: May 31, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Iwaki, Tsuyoshi Ibe, Masahiro Terada
  • Patent number: 7944138
    Abstract: A fluorescent display tube, which has short-length filaments, can be driven by applied voltage of 3-8V to be used for a general fluorescent display tube. The fluorescent display tube can emit sufficient thermal electrons even if the number of filament cathodes is decreased to reduce power consumption of the filaments. The filament cathode is arranged between a first and third supporting plates by one end thereof fixed to the first supporting plate and the other end thereof fixed to the third supporting plate, and the filament cathode having an equal length with the filament cathode extended between the first and third supporting plates is arranged between the second and third supporting plates.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: May 17, 2011
    Assignee: Futaba Corporation
    Inventors: Takehiro Iizawa, Shinichi Narushima, Katsushi Tokura, Yukihiko Shimizu, Klaus Heynen
  • Patent number: 7944136
    Abstract: The invention aims to improve, in a light emitter substrate having a resistor for connecting row-direction adjacent electrodes, withstand discharge performance of the resistor. The light emitter substrate comprises a substrate, plural light emitting members positioned in matrix on the substrate, plural electrodes positioned in matrix and each covering at least one of the light emitting members, and a row-direction striped resistor positioned between the column-direction adjacent electrodes and connecting the row/column-direction adjacent electrodes.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: May 17, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yukihiro Inoue