Discharge Devices Having A Thermionic Or Emissive Cathode Patents (Class 313/310)
  • Patent number: 10541406
    Abstract: A process of forming and the resulting nano-pitted metal substrate that serves both as patterns to grow nanostructured materials and as current collectors for the resulting nanostructured material is disclosed herein. The nano-pitted substrate can be fabricated from any suitable conductive material that allows nanostructured electrodes to be grown directly on the substrate.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: January 21, 2020
    Assignee: The University of Tulsa
    Inventors: Dale Teeters, Mathew Smith
  • Patent number: 10510534
    Abstract: An apparatus for fabricating a thin film is provided. The apparatus includes a tube including one end and another end, a first heater supplying heat to a first region, adjacent to the one end, of the tube, a second heater supplying heat to a second region, adjacent to the another end, of the tube and disposed in parallel to the first heater along the tube, a gas inlet through which a source gas is supplied to the one end of the tube, and a gas outlet through which the source gas is exhausted from the another end of the tube.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: December 17, 2019
    Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Eunkyu Kim, Changsoo Park
  • Patent number: 10379107
    Abstract: A method for preparing a topographically structured hydrogel microarray is described comprising the steps of a) providing one or more types of biomolecule(s) on top of micropillars of an array of micropillars, preferably by means of robotical spotting, b) providing a partially crosslinked hydrogel on a substrate, preferably attached to a substantially rigid and/or planar substrate, c) simultaneously soft-embossing a hydrogel microwell array and transferring the biomolecule(s) from the micropillars to the microwells by pressing the micropillars of the array of step a) onto the partially crosslinked layer of hydrogel of step b) until substantial completion of crosslinking and d) demolding the array of micropillars of step a) from the hydrogel microwell array of step c).
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: August 13, 2019
    Assignee: Ecole Polytechnique Federale de Lausanna (EPFL)
    Inventors: Samy Gobaa, Matthias Lutolf
  • Patent number: 10337098
    Abstract: A method of growing carbon nanotubes is related. A reactor is provided. The reactor includes a reactor chamber and a carbon nanotube catalyst composite layer suspended in the reactor chamber. The carbon nanotube catalyst composite layer includes a carbon nanotube layer and a number of catalyst particles dispersed in the carbon nanotube layer. A mixture of carbon source gas and carrier gas is introduced into the reactor chamber to penetrate the carbon nanotube catalyst composite layer. The carbon nanotube catalyst composite layer is heated.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: July 2, 2019
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yang Wu, Peng Liu, Yang Wei, Jia-Ping Wang, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 10192619
    Abstract: Methods for reading and programming one or more resistive change elements within a 1-R resistive change element array are disclosed. These methods include using measurement and storage elements to measure the electrical response of one or more selected cells within an array and then comparing that stored electrical response to the electrical response of a reference element within the array to determine the resistive state of the one or more selected cells. These methods also include programming methods wherein selectable current limiting elements are used to permit or inhibit programming currents from flowing through selected and unselected cells, respectively. These methods further include programming methods that use specific biasing of array lines to provide sufficient programming currents through only selected cells.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: January 29, 2019
    Assignee: Nantero, Inc.
    Inventors: Claude L. Bertin, Lee Cleveland
  • Patent number: 9969619
    Abstract: The present invention relates to carbon materials comprising carbon nanotubes, powders comprising carbon nanotubes and methods of making carbon nanotubes. In the methods of the present invention, the size and/or formation of floating catalyst particles is closely controlled. The resulting carbon nanotubes typically exhibit armchair chirality and typically have metallic properties. The carbon nanotubes produced by this method readily form bulk materials, which typically have a conductivity of at least 0.7×106 Sm?1 in at least one direction. The invention has particular application to the manufacture of components such as electrical conductors. Suitable electrical conductors include wires (e.g. for electrical motors) and cables (e.g. for transmitting electrical power).
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: May 15, 2018
    Assignee: CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Rajyashree Sundaram, Krzysztof Kazimierz Koziol, Agnieszka Ewa Lekawa-Raus, Alan Windle
  • Patent number: 9953797
    Abstract: A flat emitter configured for use in an X-ray tube is presented. The X-ray tube includes a first conductive section including a first terminal. Further, the X-ray tube includes a second conductive section including a second terminal. Also, the X-ray tube includes a third conductive section disposed between the first conductive section and the second conductive section, wherein the third conductive section is configured to emit electrons toward a determined focal spot, and wherein the third conductive section includes a plurality of slits subdividing the third conductive section into a winding track coupled to the first conductive section and the second conductive section, wherein at least two of the plurality of slits are interwound spirally to compose the winding track, and wherein the winding track is configured to expand and contract based on heat provided to the third conductive section.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: April 24, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Xi Zhang, Mark Alan Frontera, Sergio Lemaitre, John Scott Price, Uwe Wiedmann
  • Patent number: 9953796
    Abstract: A semiconductor power handling device, includes a cathode pillar, a gate surrounding the cathode pillar, and an anode spaced from the cathode by a nano-vacuum gap. An array of semiconductor power handling devices, each comprising a cathode pillar, a gate surrounding the cathode pillar, and an anode spaced from the cathode pillar by a nano-vacuum gap. The semiconductor power handling devices can be arranged as rows and columns and can be interconnected to meet the requirements of various applications. The array of power handling devices can be fabricated on a single substrate.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: April 24, 2018
    Assignee: HRL Laboratories, LLC
    Inventors: Biqin Huang, Christopher S. Roper, Tahir Hussain
  • Patent number: 9725825
    Abstract: A one-dimensional titanium nanostructure and a method for fabricating the same are provided. A titanium metal reacts with titanium tetrachloride to form the one-dimensional titanium nanostructure on a heat-resistant substrate in a CVD method and under a reaction condition of a reaction temperature of 300-900° C., a deposition temperature of 200-850° C., a flow rate of the carrier gas of 0.1-50 sccm and a reaction time of 5-60 hours. The titanium nanostructure includes titanium nanowires, titanium nanobelts, flower-shaped titanium nanowires, titanium nanorods, titanium nanotubes, and titanium-titanium dioxide core-shell structures. The titanium nanostructure can be densely and uniformly grown on the heat-resistant substrate. The present invention neither uses a template nor uses the complicated photolithographic process, solution preparation process, and mixing-coating process. Therefore, the process scale-up, cost down, and the simplified production process are achieved.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: August 8, 2017
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Tze-Lung Chen, Hsin-Tien Chiu, Chi-Young Lee
  • Patent number: 9666651
    Abstract: A display device includes a plurality of pixel electrodes which are provided separately from each other on an insulative surface; a first layer which is provided separately from each other on the respective plurality of pixel electrodes, and includes a plurality of first carrier transport layers or a plurality of first carrier injection layers; a pixel separation film which is provided on the first layer, and includes a plurality of opening portions in each region which overlaps with the respective plurality of pixel electrodes in a planar view; a light emitting layer which is provided so as to cover at least one of the plurality of opening portions; a second layer which is provided on the light emitting layer, and includes a second carrier transport layer or a second carrier injection layer; and a counter electrode which is provided on the second layer.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 30, 2017
    Assignee: Japan Display Inc.
    Inventors: Toshihiro Sato, Koji Yasukawa, Masakazu Gunji
  • Patent number: 9643926
    Abstract: A method of forming a structure having selectively placed carbon nanotubes, a method of making charged carbon nanotubes, a bi-functional precursor, and a structure having a high density carbon nanotube layer with minimal bundling. Carbon nanotubes are selectively placed on a substrate having two regions. The first region has an isoelectric point exceeding the second region's isoelectric point. The substrate is immersed in a solution of a bi-functional precursor having anchoring and charged ends. The anchoring end bonds to the first region to form a self-assembled monolayer having a charged end. The substrate with charged monolayer is immersed in a solution of carbon nanotubes having an opposite charge to form a carbon nanotube layer on the self-assembled monolayer. The charged carbon nanotubes are made by functionalization or coating with an ionic surfactant.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: May 9, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Hongsik Park, George S. Tulevski
  • Patent number: 9583738
    Abstract: A display device includes a reflecting layer. A display device according to an exemplary embodiment of the present invention includes: a lower substrate; an upper substrate facing the lower substrate; a thin film transistor on the lower substrate; and a first reflecting layer on a first surface of the upper substrate, the first surface facing the lower substrate, in which the lower substrate and the upper substrate include a display area for displaying an image, and a peripheral area outside the display area, and wherein the first reflecting layer is at the peripheral area, at display area, and at an area adjacent an edge of the upper substrate.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: February 28, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yun-Mo Chung, Byoung Ki Kim, Ho Jin Yoon, Dae Woo Lee
  • Patent number: 9561962
    Abstract: A reactor includes a reactor chamber and a carbon nanotube catalyst composite layer. The reactor chamber has an inlet and an outlet. The carbon nanotube catalyst composite layer is suspended in the reactor chamber, wherein the carbon nanotube catalyst composite layer defines a number of apertures, gases in the reactor chamber penetrate the carbon nanotube catalyst composite layer through the plurality of apertures.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: February 7, 2017
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yang Wu, Peng Liu, Yang Wei, Jia-Ping Wang, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 9478385
    Abstract: Provided are a field emission device and a method of manufacturing the same. The field emission device includes an anode electrode and a cathode electrode which are opposite to each other, a counter layer provided on the anode electrode, and a field emitter provided on the cathode electrode and facing the counter layer. Herein, the field emitter includes a carbon nanotube emitting cold electrons and a photoelectric material emitting photo electrons.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: October 25, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae-woo Kim, Yoon-Ho Song, Jin Woo Jeong, Jun Tae Kang, Sungyoul Choi, Jeong Yong Choi
  • Patent number: 9437391
    Abstract: A carbon nanotube micro-tip structure includes an insulating substrate and a patterned carbon nanotube film structure. The insulating substrate includes a surface. The surface includes an edge. The patterned carbon nanotube film structure is partially arranged on the surface of the insulating substrate. The patterned carbon nanotube film structure includes two strip-shaped arms joined at one end to form a tip portion protruded from the edge of the surface of the insulating substrate and suspended. Each of the two strip-shaped arms includes a plurality of carbon nanotubes parallel to the surface of the insulating substrate.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: September 6, 2016
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yang Wei, Shou-Shan Fan
  • Patent number: 9385245
    Abstract: A gate tunable diode is provided. The gate tunable diode includes a gate dielectric formed on a gate electrode and a graphene electrode formed on the gate dielectric. Also, the gate tunable diode includes a tunnel dielectric formed on the graphene electrode and a tunnel electrode formed on the tunnel dielectric.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: July 5, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ali Afzali-Ardakani, Damon Farmer
  • Patent number: 9378920
    Abstract: An electron emission device includes a number of electron emission units spaced from each other, wherein each of the number of electron emission units includes a first electrode, a semiconductor layer, an electron collection layer, an insulating layer, and a second electrode stacked with each other, the electron collection layer is in contact with the semiconductor layer and the insulating layer, and the electron collection layer is a conductive layer.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: June 28, 2016
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Peng Liu, De-Jie Li, Chun-Hai Zhang, Duan-Liang Zhou, Bing-Chu Du, Shou-Shan Fan
  • Patent number: 9312486
    Abstract: A method for fabricating an organic light emitting display device includes forming a first electrode on a substrate; forming a pixel-defining film having an opening exposing the first electrode; forming an ink non-reactive solvent portion by discharging of an ink non-reactive solvent at the opening and forming an organic light emitting layer by discharging an organic light emitting ink on the ink non-reactive solvent portion; and forming a second electrode on the organic light emitting layer.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: April 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yoon Ho Kang
  • Patent number: 9203049
    Abstract: A thin film encapsulation unit including an inorganic layer, a first organic layer on the inorganic layer and including a light-blocking unit and a light-transmitting unit, and a reflection-preventing layer on the first organic layer.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: December 1, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung-Duk Lee, Yun-Ah Chung, Yoon-Hyeung Cho
  • Patent number: 9058954
    Abstract: Devices and methods are described for a cathode having a plurality of apertures in an insulating layer, pits in a substrate layer, and emitters in the pit. The device can also have gate layer on top of the insulating layer which has an opening that is substantially aligned with the pit and the aperture. The emitter can be an array of substantially aligned carbon nanotubes. The device and method produces cathodes that are designed to avoid shorting of the cathode due to emitter-gate contact and other fabrication challenges.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: June 16, 2015
    Assignee: Georgia Tech Research Corporation
    Inventors: Graham Sanborn, William Judson Ready
  • Patent number: 9054307
    Abstract: Provided are semiconductor devices, such as resistive random access memory (ReRAM) cells, that include current limiting layers formed from alloys of transition metals. Some examples of such alloys include chromium containing alloys that may also include nickel, aluminum, and/or silicon. Other examples include tantalum and/or titanium containing alloys that may also include a combination of silicon and carbon or a combination of aluminum and nitrogen. These current limiting layers may have resistivities of at least about 1 Ohm-cm. This resistivity level is maintained even when the layers are subjected to strong electrical fields and/or high temperature processing. In some embodiments, the breakdown voltage of a current limiting layer is at least about 8V. The high resistivity of the layers allows scaling down the size of the semiconductor devices including these layers while maintaining their performance.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: June 9, 2015
    Assignees: Intermolecular, Inc., Kabushiki Kaisha Toshiba, SanDisk 3D LLC
    Inventors: Yun Wang, Tony P. Chiang, Imran Hashim, Tim Minvielle, Dipankar Pramanik, Takeshi Yamaguchi
  • Patent number: 9035548
    Abstract: An electron emission element (1) includes an electrode substrate (2) and a thin film electrode (3), and emits electrons from the thin film electrode (3) by voltage application across the electrode substrate (2) and the thin film electrode (3). An electron accelerating layer (4) containing at least insulating fine particles (5) is provided between the electrode substrate (2) and the thin film electrode (3). The electrode substrate (2) has a convexoconcave surface. The thin film electrode (3) has openings (6) above convex parts of the electrode substrate (2).
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 19, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshihiro Kaneko, Tadashi Iwamatsu, Ayae Nagaoka
  • Patent number: 9030100
    Abstract: A highly durable cathode component for a discharge lamp is provided. A cathode component for a discharge lamp includes a barrel having a wire diameter of 2 to 35 mm and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO2), of a thorium component, not less than 90% of tungsten crystals are accounted for by tungsten crystals having a grain size in the range of 1 to 80 ?m, as observed in terms of an area ratio of 300 ?m×300 ?m in unit area in a circumferential cross section of the barrel, and are accounted for by tungsten crystals having a grain size in the range of 10 to 120 ?m, as observed in terms of an area ratio of 300 ?m×300 ?m in unit area in a side cross section of the barrel.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: May 12, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Hitoshi Aoyama, Masahiro Tatesawa, Noboru Kitamori
  • Patent number: 8987982
    Abstract: A thermionic emission assembly includes a Wehnelt cap that has a cap beam aperture and a cavity within which a cathode is supported. Electrical energy applied to the cathode causes it to reach a sufficiently high temperature to emit a beam of electrons that propagate through the cap beam aperture. An anode having an anode beam aperture is positioned in spatial alignment with the cap beam aperture to receive the electrons. The anode accelerates the electrons and directs them through the anode beam aperture for incidence on a target specimen. A ceramic base forms a combined interface that electrically and thermally separates the Wehnelt cap and the anode. The thermal isolation of the Wehnelt cap from the anode allows the Wehnelt cap to increase in heat to rapidly reach a stable temperature as the cathode emits the beam of electrons.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: March 24, 2015
    Assignee: Applied Physics Technologies, Inc.
    Inventors: Gerald Magera, William Mackie, Larry Southall, Gary Cabe, Cory Fast
  • Publication number: 20150076988
    Abstract: A field emission device comprises one or more emitter elements, each having a high aspect ratio structure with a nanometer scaled cross section; and one or more segmented electrodes, each surrounding one of the one or more emitters. Each of the one or more segmented electrodes has multiple electrode plates. This abstract is provided to comply with rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 19, 2015
    Inventors: Thomas Plettner, Mehran Nasser-Ghodsi
  • Patent number: 8957573
    Abstract: Wire-suspended thermionic cathodes provide lower power, further reduction in size, better stability and accuracy, and higher loading then conventional art. The cathodes are too small for use with conventional heaters and so are heated from behind by an electron beam or an intense light beam, such as laser light transmitted via optical fiber to the back of the cathode. The cathodes are electrically isolated from the focus electrode, thus allowing beam cutoff and modulation.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: February 17, 2015
    Inventor: Bernard K Vancil
  • Publication number: 20150028738
    Abstract: A highly durable cathode component for a discharge lamp is provided. A cathode component for a discharge lamp includes a barrel having a wire diameter of 2 to 35 mm and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO2), of a thorium component, not less than 90% of tungsten crystals are accounted for by tungsten crystals having a grain size in the range of 1 to 80 ?m, as observed in terms of an area ratio of 300 ?m×300 ?m in unit area in a circumferential cross section of the barrel, and are accounted for by tungsten crystals having a grain size in the range of 10 to 120 ?m, as observed in terms of an area ratio of 300 ?m×300 ?m in unit area in a side cross section of the barrel.
    Type: Application
    Filed: February 13, 2013
    Publication date: January 29, 2015
    Inventors: Hitoshi Aoyama, Masahiro Tatesawa, Noboru Kitamori
  • Publication number: 20150002009
    Abstract: A metal hexaboride nanowire such as LaB6 with the formed metal-terminated (100) plane at the tip has a small work function, and can emit a very narrow electron beam from the (100) plane. In such emitters, contamination occurs in a very short time period, and the output current greatly decreases when used under low temperature. The cold field emitter of the present invention overcomes this problem with a stabilization process that exposes the metal-terminated (100) plane of the tip to hydrogen at low temperature, and can stably operate over extended time periods.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 1, 2015
    Inventors: Han Zhang, Jie Tang, Luchang Qin, Jinshi Yuan, Norio Shinyq, Yasushi Yamauchi
  • Patent number: 8922118
    Abstract: A light-emitting device includes: a package; a semiconductor light-emitting element mounted above the package; a cap component provided above the package; a sealing component which seals a space between the package and the cap component; and a phosphor containing resin including phosphor disposed in the sealed space.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: December 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Kazuhiko Yamanaka, Shinji Yoshida, Shinichi Takigawa, Takuma Katayama, Hideyuki Nakanishi, Tsuyoshi Tanaka
  • Patent number: 8917013
    Abstract: A carbon nanotube field emitter is disclosed. The carbon nanotube field emitter includes an emission portion and a supporting portion. The emission portion and the supporting portion are configured as one piece to form a roll structure. The emission portion includes a first rolled carbon nanotube layer, which includes a number of carbon nanotubes. The supporting portion includes a rolled composite layer, which includes at least one second rolled carbon nanotube layer and a rolled metal layer stacked with each other. Another carbon nanotube field emitter with a number of separated emission tips on the emission portion is also disclosed.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: December 23, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 8907553
    Abstract: A cold cathode field emission electron source capable of emission at levels comparable to thermal sources is described. Emission in excess of 6 A/cm2 at 7.5 V/?m is demonstrated in a macroscopic emitter array. The emitter is comprised of a monolithic and rigid porous semiconductor nanostructure with uniformly distributed emission sites, and is fabricated through a room temperature process which allows for control of emission properties. These electron sources can be used in a wide range of applications, including microwave electronics and x-ray imaging for medicine and security.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: December 9, 2014
    Assignee: The United States of America as represented by the Secretary of Commerce, The National Institute of Standards and Technology
    Inventors: Fred Sharifi, Myung-Gyu Kang, Henri Lezec
  • Patent number: 8907555
    Abstract: A field emission electron source includes a carbon nanotube micro-tip structure. The carbon nanotube micro-tip structure includes an insulating substrate and a patterned carbon nanotube film structure. The insulating substrate includes a surface. The surface includes an edge. The patterned carbon nanotube film structure is partially arranged on the surface of the insulating substrate. The patterned carbon nanotube film structure includes two strip-shaped arms joined at one end to form a tip portion protruded from the edge of the surface of the insulating substrate and suspended. Each of the two strip-shaped arms includes a plurality of carbon nanotubes parallel to the surface of the insulating substrate. A field emission device is also disclosed.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 9, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Shou-Shan Fan
  • Patent number: 8900029
    Abstract: The present application relates to a method for making a carbon nanotube field emitter. A carbon nanotube film is drawn from the carbon nanotube array by a drawing tool. The carbon nanotube film includes a triangle region. A portion of the carbon nanotube film closed to the drawing tool is treated into a carbon nanotube wire including a vertex of the triangle region. The triangle region is cut from the carbon nanotube film by a laser beam along a cutting line. A distance between the vertex of the triangle region and the cutting line can be in a range from about 10 microns to about 5 millimeters.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: December 2, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Shou-Shan Fan
  • Patent number: 8896195
    Abstract: This invention relates to a filament for electron emission cathode which is employed in an electron microscope, a critical dimension examine tool, an electron beam lithograph machine, an electron beam tester and other electron beam related systems as an electron source. Embodiments of the present invention discloses method with which a Re (Rhenium) is used as heat source such that vibration issue of prior tungsten filament can be depressed.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: November 25, 2014
    Assignee: Hermes Microvision, Inc.
    Inventor: Juying Dou
  • Patent number: 8884501
    Abstract: A light emitting diode (LED) based lamp is provided that may include a housing, a LED module having at least one LED to emit light, and a lens to receive the light from the LED and to guide the light to a specific area. An outer circumference of the lens may have a different surface roughness than an inner surface of the lens or may have a different light transmissivity than the inner surface of the lens. The outer circumference of the lens may minimize light from being transmitted to a region outside the specific area.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: November 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Hankyu Cho, Hyunha Kim, Euna Moon
  • Patent number: 8866371
    Abstract: Increasing the volume or weight of zirconia which is a diffusion and supply source, to extend the life of a field-emission type electron source causes a problem that the diffusion and supply source itself or a tungsten needle is easily subjected to damage. As another problem, although it is considered to form the diffusion and supply source using a thin film to avoid the above-described problem, it is difficult to stably obtain practical life exceeding 8,000 hours. It has been found that practical life exceeding 8,000 hours is stably obtained by providing a field-emission type electron source that has no chips or cracks in a diffusion and supply source and that can extend life with a little bit of an increase in the amount of the diffusion and supply source.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: October 21, 2014
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Souichi Katagiri, Takashi Ohshima, Sukehiro Ito
  • Patent number: 8853531
    Abstract: Photon Enhanced Thermionic Emission (PETE) is exploited to provide improved efficiency for radiant energy conversion. A hot (greater than 200° C.) semiconductor cathode is illuminated such that it emits electrons. Because the cathode is hot, significantly more electrons are emitted than would be emitted from a room temperature (or colder) cathode under the same illumination conditions. As a result of this increased electron emission, the energy conversion efficiency can be significantly increased relative to a conventional photovoltaic device. In PETE, the cathode electrons can be (and typically are) thermalized with respect to the cathode. As a result, PETE does not rely on emission of non-thermalized electrons, and is significantly easier to implement than hot-carrier emission approaches.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: October 7, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jared Schwede, Nicholas Melosh, Zhixun Shen
  • Patent number: 8803410
    Abstract: The present disclosure relates to a field emission device. The field emission device includes a carbon nanotube structure and two electrodes electrically connected with the carbon nanotube structure. The carbon nanotube structure includes a carbon nanotube array, a carbon nanotube layer located on one side of the carbon nanotube array, and a carbon nanotube cluster between the carbon nanotube array and the carbon nanotube layer. The carbon nanotube array includes a number of first carbon nanotubes that are parallel with each other. The carbon nanotube layer includes a number of second carbon nanotubes. The carbon nanotube cluster includes a plurality of third carbon nanotubes that are entangled around both the plurality of first carbon nanotubes and the plurality of second carbon nanotubes.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: August 12, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Kai-Li Jiang, Shou-Shan Fan
  • Publication number: 20140203707
    Abstract: Provided herein are electron emission devices and device components for optical, electronic and optoelectronic devices, including cantilever-based MEMS and NEMS instrumentation. Devices of certain aspects of the invention integrate a dielectric, pyroelectric, piezoelectric or ferroelectric film on the receiving surface of a substrate having an integrated actuator, such as a temperature controller or mechanical actuator, optionally in the form of a cantilever device having an integrated heater-thermometer. Also provided are methods of making and using electron emission devices for a range of applications including sensing and imaging technology.
    Type: Application
    Filed: July 26, 2012
    Publication date: July 24, 2014
    Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: William P. King, Lane W. Martin, Patrick C. Fletcher
  • Publication number: 20140203183
    Abstract: A radiation generating tube includes an electron emitting source configured to emit an electron beam; a target configured to generate radiation when the target is irradiated with the electron beam; a rear shield body having a tube-shaped electron passage with openings thereof at each end of the passage, and being located at the side of the electron emitting source with respect to the target, a first opening of the passage facing the electron emitting source and being separated from the electron emitting source, a second opening of the passage facing the target; and a brazing material joining the rear shield body with a peripheral edge of the target, at a position separated from the second opening. A closed space isolated from the electron passage is provided between the target and the rear shield body.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 24, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiro Sando, Noritaka Ukiyo, Yasue Sato, Yoshihiro Yanagisawa
  • Publication number: 20140191650
    Abstract: An electric field emitting source is equipped with an electron emitting film which comprises a nano-sized electron emitting substance and has a first surface and a second surface constituting the surface opposite thereto, and a cathode which secures one end of the electron emitting film and comprises a first block and a second block respectively corresponding to the first surface and the second surface of the electron emitting film.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 10, 2014
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Cheol Jin Lee, Dong Hoon Shin, Ji Hong Shin
  • Patent number: 8749127
    Abstract: A device for lighting a room is described. The device has an envelope with a transparent face, the face having an interior surface coated with a cathodoluminescent screen and a thin, reflective, conductive, anode layer. There is a broad-beam electron gun mounted directly to feedthroughs in a base of the envelope with a heated, button-on-hairpin, cathode for emitting electrons in a broad beam towards the anode, and a power supply mounted on the feedthroughs at the base of the envelope that drives the cathode to a multi-kilovolt negative voltage. A two-prong snubber serves as an anode contact to permit the power supply to drive the anode to a voltage near ground. A method of manufacture of the anode uses a single step deposition and lacquering process followed by a metallization using a conical-spiral tungsten filament coated with aluminum by a thermal spray coating process.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: June 10, 2014
    Assignee: Vu1 Corporation
    Inventors: Richard Herring, Charles E. Hunt, Bernard K. Vanch, Tomas Hasilik, Viktor Jelinek
  • Publication number: 20140153698
    Abstract: A flat filament includes a first electron emission surface, a first current supply leg, a second current supply leg, a second electron emission surface disposed laterally of the first electron emission surface and connected to a first end region of the first electron emission surface, a third current supply leg, a third electron emission surface disposed laterally of the first electron emission surface, opposite from the second electron emission surface, and connected to a second end region of the first electron emission surface, and a fourth current supply leg.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Applicant: SHIMADZU CORPORATION
    Inventor: Tatsuya YOSHIZAWA
  • Publication number: 20140141619
    Abstract: Techniques disclosed herein include apparatus and processes for generating a plasma having a uniform electron density across an electrode used to generate the plasma. An upper electrode (hot electrode), of a capacitively coupled plasma system can include structural features configured to assist in generating the uniform plasma. Such structural features define a surface shape, on a surface that faces the plasma. Such structural features can include a set of concentric rings having an approximately rectangular cross section, and protruding from the surface of the upper electrode. Such structural features can also include nested elongated protrusions having a cross-sectional size and shape, with spacing of the protrusions selected to result in a system that generates a uniform density plasma.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Ikuo Sawada
  • Patent number: 8710729
    Abstract: A field emission cathode device includes a cathode substrate, a gate electrode, a first dielectric layer, a cathode electrode, and an electron emission layer. The gate electrode is located on a surface of the cathode substrate. The first dielectric layer is located on a surface of the gate electrode and defines a first opening to expose part of the gate electrode. The cathode electrode is spaced from the gate electrode through the first dielectric layer defining a second opening in alignment with the first opening. A field emission display using the field emission cathode device is also related.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: April 29, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Jie Tang, Bing-Chu Du, Shou-Shan Fan
  • Publication number: 20140097741
    Abstract: A field emission electron source includes a linear carbon nanotube structure, an insulating layer and at least one conductive ring. The linear carbon nanotube structure has a first end and a second end. The insulating layer is located on outer surface of the linear carbon nanotube structure. The first conductive ring includes a first ring face 1301 and a second ring face, an end surface of the linear carbon nanotube structure, and the first ring face are coplanar.
    Type: Application
    Filed: December 18, 2012
    Publication date: April 10, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: CAI-LIN GUO, JIE TANG, PENG LIU, SHOU-SHAN FAN
  • Publication number: 20140077684
    Abstract: The present disclosure provides a method for manufacturing a particle source comprising: placing a metal wire in vacuum, introducing active gas, adjusting a temperature of the metal wire and applying a positive high voltage V to the metal wire to generate at a side of the head of the metal wire an etching zone in which field induced chemical etching (FICE) is performed; increasing by the FICE a surface electric field at the top of the metal wire head to be greater than a field evaporation electric field of material for the metal wire, so that metal atoms at the top of the metal wire are evaporated off; after the field evaporation is activated by the FICE, causing mutual adjustment between the FICE and the field evaporation, until the head of the metal wire has a shape of combination of a base and a tip on the base; and stopping the FICE and the field evaporation when the head of the metal wire takes a predetermine shape.
    Type: Application
    Filed: May 4, 2012
    Publication date: March 20, 2014
    Applicant: 38th RESEARCH INSTITUTE, CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Huarong Liu, Ping Chen
  • Patent number: 8669535
    Abstract: The present invention has an object to provide a cold cathode field-emission electron gun with low aberration, to thereby provide a high-brightness electron gun even in the case of a large current. The present invention provides a field-emission electron gun which extracts an electron beam from a cathode and converges the extracted electron beam, the field-emission electron gun including: a magnetic field lens which is provided such that the cathode is disposed inside of a magnetic field of the lens; and an extraction electrode for extracting electrons from the cathode, the extraction electrode being formed into a cylindrical shape without an aperture structure. The present invention can provide an electron gun having a function of converging an electron beam using a magnetic field, the electron gun which is capable of reducing an incidental electrostatic lens action and has small aberration and high brightness.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: March 11, 2014
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Mikio Ichihashi, Takashi Onishi, Shunichi Watanabe, Keiji Tamura
  • Publication number: 20140027655
    Abstract: A tubular or spherical nanostructure composed of a plurality of peptides, wherein each of the plurality of peptides includes no more than 4 amino acids and whereas at least one of the 4 amino acids is an aromatic amino acid.
    Type: Application
    Filed: November 8, 2012
    Publication date: January 30, 2014
    Applicant: Ramot at Tel-Aviv University Ltd.
    Inventor: Ramot at Tel-Aviv University Ltd.
  • Publication number: 20140010347
    Abstract: A mesh electrode adhesion structure includes: a substrate, and an opening defined in the substrate; a mesh electrode on the substrate, and a first combination groove defined in the mesh electrode; and an adhesion layer between the substrate and the mesh electrode. The mesh electrode includes: a mesh region corresponding to the opening defined in the substrate, and an adhesion region in which the first combination groove exposes the adhesion layer.
    Type: Application
    Filed: May 14, 2013
    Publication date: January 9, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Do-yoon KIM, Yong-chul KIM, Il-hwan KIM, Shang-hyeun PARK, Tae-won JEONG