Point Source Cathodes Patents (Class 313/336)
  • Patent number: 10784071
    Abstract: Electron emitters and methods of fabricating the electron emitters are disclosed. According to certain embodiments, an electron emitter includes a tip with a planar region having a diameter in a range of approximately (0.05-10) micrometers. The electron emitter tip is configured to release field emission electrons. The electron emitter further includes a work-function-lowering material coated on the tip.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: September 22, 2020
    Assignee: ASML Netherlands B.V.
    Inventors: Juying Dou, Zheng Fan, Tzu-Yi Kuo, Zhongwei Chen
  • Patent number: 9974166
    Abstract: A circuit board including a substrate, a patterned circuit layer and a photo-imaginable dielectric layer is provided. The substrate has a first surface and a second surface opposite to each other. The patterned circuit layer is disposed on the first surface, and a line width of the patterned circuit layer gradually reduces from the first surface towards the second surface. The photo-imaginable dielectric layer is disposed in the substrate corresponding to the patterned circuit layer. In addition, a manufacturing method of the circuit board is also proposed.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 15, 2018
    Assignee: Unimicron Technology Corp.
    Inventors: Chun-Ting Lin, Tsung-Si Wang
  • Patent number: 9583299
    Abstract: There is provided an iridium tip including a pyramid structure having one {100} crystal plane as one of a plurality of pyramid surfaces in a sharpened apex portion of a single crystal with <210> orientation. The iridium tip is applied to a gas field ion source or an electron source. The gas field ion source and/or the electron source is applied to a focused ion beam apparatus, an electron microscope, an electron beam applied analysis apparatus, an ion-electron multi-beam apparatus, a scanning probe microscope or a mask repair apparatus.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: February 28, 2017
    Assignee: Hitachi High-Tech Science Corporation
    Inventors: Tomokazu Kozakai, Osamu Matsuda, Yasuhiko Sugiyama, Kazuo Aita, Fumio Aramaki, Anto Yasaka, Hiroshi Oba
  • Patent number: 9503084
    Abstract: A capacitive control interface for a domestic appliance includes an outer layer configured to be pressed by a user, a first capacitive component, a second capacitive component facing and separated from the first capacitive component, a first layer of insulating material between the outer layer and the first capacitive component, and a second layer of insulating material beneath the first layer of insulating material and in contact with the first capacitive component, the second layer having a thru hole encompassing the second capacitive component, wherein the second capacitive component faces the first capacitive component at the thru hole, and wherein the outer layer is flexibly responsive to pressure and is configured to transfer a flexure to the first capacitive component.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: November 22, 2016
    Assignee: Whirlpool Corporation
    Inventor: Leonardo Sergi
  • Patent number: 9426009
    Abstract: A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: August 23, 2016
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Ye Li, Nelson Ray Sollenberger, Jack Harriman Winters
  • Patent number: 9240301
    Abstract: An electron source is made from mixed-metal carbide materials of high refractory nature. Producing field-enhanced thermionic emission, i.e., thermal-field or extended Schottky emission, from these materials entails the use of a certain low work function crystallographic direction, such as, for example, (100), (210), and (310). These materials do not naturally facet because of their refractory nature. The disclosed electron source made from transition metal carbide material is especially useful when installed in a scanning electron microscope (SEM) performing advanced imaging applications that require a high brightness, high beam current source.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: January 19, 2016
    Assignee: Applied Physics Technologies, Inc.
    Inventors: William A. Mackie, Gerald G. Magera
  • Patent number: 9228265
    Abstract: Methods for template-stripping a single metallic nano-tip structure from a template containing a plurality of ready-to-be-template-stripped inverted metallic nano-tip structures include attaching the metallic nano-tip structure to a wire handle or a cantilever. A metallic nano-tip assembly includes a single metallic nano-tip structure attached to a handle or mounted on a cantilever structure. The metallic nano-tip assembly may be conductive.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: January 5, 2016
    Assignee: UNIVERSITY OF ROCHESTER
    Inventors: Lukas Novotny, Sang-Hyun Oh
  • Patent number: 9136428
    Abstract: A population of nanocrystals including a core comprising a first semiconductor material comprising one or more elements of Group IIIA of the Periodic Table of Elements and one or more elements of Group VA of the Periodic Table of Elements, and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the nanocrystal is capable of emitting light having a photoluminescence quantum efficiency of at least about 30% upon excitation. Also disclosed is a nanocrystal comprising a nanocrystal core and a shell comprising a semiconductor material comprising at least three chemical elements and obtainable by a process comprising adding a precursor for at least one of the chemical elements of the semiconductor material from a separate source to a nanocrystal core while simultaneously adding amounts of precursors for the other chemical elements of the semiconductor material. Devices including nanocrystals are disclosed.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: September 15, 2015
    Assignee: QD VISION, INC.
    Inventors: Christopher R. Clough, Craig Breen, Jonathan S. Steckel, Ebenezer Selwyn Arun Thamban
  • Patent number: 9082586
    Abstract: A cathode operating temperature adjusting method includes acquiring an approximate equation approximating a correlation between an emission current value in an electron beam source using a cathode and an operating temperature of the cathode at which a bias voltage becomes saturated at the emission current, measuring a current density of an electron beam from the cathode when in the state where an n-th emission current value and an n-th cathode operating temperature are set in the electron beam source, determining whether the measured current density is within a first tolerance range, changing the n-th emission current value to an (n+1)th emission current value when the measured current density is not within the first tolerance range, calculating an operating temperature of the cathode corresponding to the (n+1)th emission current value by the approximate equation, and setting the calculated operating temperature, as an (n+1)th cathode operating temperature, in the electron beam source.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: July 14, 2015
    Assignee: NuFlare Technology, Inc.
    Inventor: Nobuo Miyamoto
  • Patent number: 9006964
    Abstract: The present invention relates to afield emission cathode, comprising an at least partly electrically conductive base structure, and a plurality of electrically conductive micrometer sized sections spatially distributed at the base structure, wherein at least a portion of the plurality of micrometer sized sections each are provided with a plurality of electrically conductive nanostructures. Advantages of the invention include lower power consumption as well as an increase in light output of e.g. a field emission lighting arrangement comprising the field emission cathode.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: April 14, 2015
    Assignee: Lightlab Sweden AB
    Inventor: Qiu-Hong Hu
  • Publication number: 20150061487
    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: Application
    Filed: October 20, 2014
    Publication date: March 5, 2015
    Inventors: Fred Sharifi, MYUNG-GYU KANG, HENRI LEZEC
  • Patent number: 8933864
    Abstract: A flat panel display including a plurality of electrically addressable pixels; using a passive matrix on a first substrate, a passivating layer on at least partially around the pixels; a conductive frame on the passivating layer, and a plurality of cold cathode emitters on select portions of the conductive frame within the display, wherein exciting the conductive frame and addressing one of the pixels using the associated passive matrix causes electrons to strike at least one of the pixels and result in the emission of light from those pixels. Using a metal layer (ML) on a second substrate the extent of electrons emitted is enhanced through the incorporation of a noble gas or mixture thereof, causing a multiplication of the electrons emitted by the cold cathode when the gas is ionized.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: January 13, 2015
    Assignee: CopyTele, Inc.
    Inventors: Frank J. DiSanto, Denis Krusos
  • Patent number: 8822945
    Abstract: A focused ion beam apparatus includes a gas field ion gun unit having an emitter, an ion source gas supply unit for supplying different ion source gases to the emitter, a heater for heating the emitter, and an extraction electrode. A storage section stores, for each gas of a plurality of different types, set values of emitter temperature, gas pressure, extraction voltage to be applied to an extraction electrode, image contrast and image brightness. An input section selects and inputs one of the gas types. A control section reads, from the storage section, the set values of emitter temperature, gas pressure, extraction voltage, image contrast and image brightness, which correspond to the input gas type, and sets a heater, a gas control section, a voltage control section, and an adjustment section for the contrast and brightness of the image.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: September 2, 2014
    Assignee: SII NanoTechnology Inc.
    Inventors: Kenichi Nishinaka, Takashi Ogawa, Yoshihiro Koyama
  • Patent number: 8814622
    Abstract: Disclosed is an encapsulated micro-diode and a method for producing same. The method comprises forming a plurality columns in the substrate with a respective tip disposed at a first end of the column, the tip defining a cathode of the diode; disposing a sacrificial oxide layer on the substrate, plurality of columns and respective tips; forming respective trenches in the sacrificial oxide layer around the columns; forming an opening in the sacrificial oxide layer to expose a portion of the tips; depositing a conductive material in of the opening and on a surface of the substrate to form an anode of the diode; and removing the sacrificial oxide layer.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 26, 2014
    Assignee: Sandia Corporation
    Inventors: Paul J. Resnick, Eric Langlois
  • Patent number: 8787529
    Abstract: Coherent electronic current, which can be used to generate coherent radiation, is generated by first generating and transmitting an array of discrete electron beamlets from a nanocathode array along a longitudinal axis. The array of electron beamlets is then focused to reduce the spacing that separates the electron beamlets. The transverse-axis spacing of the electron beamlets is then transferred to the longitudinal axis via an emittance exchange beamline, creating a periodically modulated distribution of coherent electronic current. The coherent electronic current can then be directed into a stream of photons to generate coherent radiation.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: July 22, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: William S. Graves, Franz X. Kaertner, David E. Moncton
  • Publication number: 20140097736
    Abstract: An improved cathode comprises a cone-shaped emitter with a carbon-based coating applied to the emitter cone surface, in which there is a narrow annular gap between the emitter body and the carbon coating. The gap prevents direct contact between the carbon coating and the crystalline emitting material, thereby preventing damaging interactions and extending the useful lifetime of the cathode.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 10, 2014
    Applicant: NUFLARE TECHNOLOGY, INC.
    Inventor: Victor Katsap
  • Patent number: 8648604
    Abstract: An ionization gauge to measure pressure and to reduce sputtering yields includes at least one electron source that generates electrons. The ionization gauge also includes a collector electrode that collects ions formed by the collisions between the electrons and gas molecules. The ionization gauge also includes an anode. An anode bias voltage relative to a bias voltage of a collector electrode is configured to switch at a predetermined pressure to decrease a yield of sputtering collisions.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: February 11, 2014
    Assignee: Brooks Automation, Inc.
    Inventor: Gerardo A. Brucker
  • Patent number: 8624477
    Abstract: The present application relates to a carbon nanotube field emitter. The carbon nanotube field emitter includes a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotubes joined end-to-end by van der waals attractive force. The carbon nanotube structure has two joined portions, one portion is a triangle shaped carbon nanotube film, which is an electron emitting portion, the other portion is a carbon nanotube wire, which is a support portion.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 7, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Shou-Shan Fan
  • Patent number: 8536546
    Abstract: An electron gun, an electron source for an electron gun, an extractor for an electron gun, and a respective method for producing the electron gun, the electron source and the extractor are disclosed. Embodiments provide an electron source utilizing a carbon nanotube (CNT) bonded to a substrate for increased stability, reliability, and durability. An extractor with an aperture in a conductive material is used to extract electrons from the electron source, where the aperture may substantially align with the CNT of the electron source when the extractor and electron source are mated to form the electron gun. The electron source and extractor may have alignment features for aligning the electron source and the extractor, thereby bringing the aperture and CNT into substantial alignment when assembled. The alignment features may provide and maintain this alignment during operation to improve the field emission characteristics and overall system stability of the electron gun.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: September 17, 2013
    Assignee: Eloret Corporation
    Inventors: Cattien V. Nguyen, Bryan P. Ribaya
  • Patent number: 8531097
    Abstract: Disclosed is a field emitter, including: a cathode electrode in a shape of a tip; an emitter having a diameter smaller than a diameter of the cathode electrode and formed on the cathode electrode; and a gate electrode having a single hole and located above the emitter while maintaining a predetermined distance from the emitter.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: September 10, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin Woo Jeong, Jun Tae Kang, Yoon Ho Song, Jae Woo Kim
  • Patent number: 8530907
    Abstract: A light source includes a hot electron source comprising a cathode that generates an electron beam and an anode comprising a germanium containing material positioned adjacent to the cathode. The anode is biased so that the electron beam accelerates towards the anode where some electrons are absorbed and then relax to both direct energy bands and indirect energy bands causing stimulation of low energy electrons from the indirect energy band to the direct energy band, thereby creating electroluminescence.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: September 10, 2013
    Assignee: Photonic Systems, Inc.
    Inventors: Jianxiao Chen, Charles H. Cox
  • Patent number: 8519608
    Abstract: Provided is an electron source which outputs a stable electron beam even when vibration is applied from the external to an apparatus which uses the electron source. The electron source is provided with an insulator (5); two conductive terminals (4) arranged at an interval on the insulator (5); a long filament (3) stretched between the conductive terminals (4); and a needle-like cathode (1) having an electron emitting section attached to the filament (3). The vertical cross-section shape of the filament (3) in the axis direction has a long direction and a short direction, and the maximum length in the long direction is 1.5 times or more but not more than 5 times the maximum length in the short direction.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: August 27, 2013
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Ryozo Nonogaki, Yoshinori Terui
  • Patent number: 8492966
    Abstract: Field emission devices utilizing capacitive ballasting are described with possible uses in industry. The preferred device utilizes opposing electrodes, each with a dielectric layer and a plurality of conductive islands which serve to exchange electrons, generating an oscillatory current. Ideally these islands are dome-shaped and made of a refractory metal such as tungsten of molybdenum. Through proper use and selection of materials, electrical fields with densities of 1014 A/m2 are capable of being generated.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: July 23, 2013
    Inventor: Mark J. Hagmann
  • Patent number: 8476819
    Abstract: The present invention relates to a triode field emission display with anode and gate on the same substrate, comprising anode-gate substrate and cathode substrate, parallel and adapted in the size; a number of strip-like cathode conducting layers arranged alternating on the cathode substrate; resistor layer for current limiting and dielectric layer for cathode protection are arranged alternately on the cathode conducting layer in the longitudinal direction; the electron emission materials are arranged on the resistor layer for current limiting; wherein the strip-like anode conducting layer and strip-like gate conducting layer on the anode-gate substrate are perpendicular to the strip-like cathode conducting layer on the cathode substrate, dielectric layer for isolation is arranged between the anode-gate and the cathode substrates, one end of the dielectric layer for isolation is connected to the dielectric layer for gate protection, the other end is connected to the dielectric layer for cathode protection.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: July 2, 2013
    Inventors: Tailiang Guo, Yongai Zhang, Zhixian Lin, Liqin Hu, Yun Ye, Yuxiang You
  • Patent number: 8456076
    Abstract: An electron emitting source capable of preventing increase in an inter-terminal resistance and a manufacturing method of the electron emitting source. The electron emitting source comprises an electron emitting chip made of rare-earth hexaboride, and a heater constituted by a carbonaceous member for holding and heating the electron emitting chip, wherein an electrically conductive substance is provided in a gap between the electron emitting chip and the heater.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: June 4, 2013
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Toshiyuki Morishita, Yoshinori Terui
  • Patent number: 8450920
    Abstract: The present disclosure provides a field emission electronic device. The field emission electronic device includes an insulating substrate, a first electrical conductor located on surface of the insulating substrate, a number of electron emitters connected to the first electrical conductor, a second electrical conductor spaced apart from and insulated from the first electrical conductor. Each of the number of electron emitters includes at least one electron emitter. Each of the electron emitters includes a carbon nanotube pipe. The carbon nanotube pipe includes a first end, a second end and a main body connecting the first end and the second end. The first end of the carbon nanotube pipe is electrically connected to one of the plurality of row electrodes. The second end of the carbon nanotube pipe has a number of carbon nanotube peaks.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 28, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Peng Liu, Hai-Yan Hao, Shou-Shan Fan
  • Patent number: 8446088
    Abstract: A field emission device for emitting white light is provided. The device includes a cathode plate assembly (1), an anode plate assembly (2) which is opposite to and spaced from the cathode plate assembly (1), and a supporting body (3) for tight coupling the cathode plate assembly (1) with the anode plate assembly (2). The anode plate assembly (2) includes a transparent substrate (203) which can emit yellow light when excited by blue light. An anode (202) and a blue cathode ray luminescent material layer (201) are provided on the surface of the transparent substrate (203). The blue cathode ray luminescent material layer (201) contains blue cathode ray luminescent material.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: May 21, 2013
    Assignee: Ocean's King Lighting Science & Technology Co., Ltd.
    Inventors: Mingjie Zhou, Wenbo Ma
  • Publication number: 20130119252
    Abstract: To provide a gas field ion source having a high angular current density, the gas field ion source is configured such that at least a base body of an emitter tip configuring the gas field ion source is a single crystal metal, such that the apex of the emitter tip is formed into a pyramid shape or a cone shape having a single atom at the top, and such that the extraction voltage in the case of ionizing helium gas by the single atom is set to 10 kV or more.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 16, 2013
    Inventors: Yoshimi Kawanami, Shinichi Matsubara, Hironori Moritani, Noriaki Arai, Hiroyasu Shichi, Tomihiro Hashizume, Hiroyasu Kaga, Norihide Saho, Hiroyuki Muto, Yoichi Ose
  • Patent number: 8436524
    Abstract: Provided is an electron source which provides a stable electron beam even when vibration is applied from external to a device which uses the electron source. The electron source is provided with a needlelike chip (1) having an electron emitting section at one end; a cup-like component (6) bonded to the other end of the needlelike chip (1); and a filament (3) for heating the cup-like component (6). The filament (3) is arranged in a gap inside the cup-like component (6), in a noncontact state to the cup-like component (6).
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: May 7, 2013
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshinori Terui, Ryozo Nonogaki
  • Patent number: 8421330
    Abstract: A carbon film of the present invention has an elongated needle shape whose radius decreases toward a tip. The shape is, preferably, a shape in which a field concentration coefficient ? in the Fowler-Nordheim equation is expressed by h/r where r denotes the radius in an arbitrary position and h denotes height from the arbitrary position to the tip.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: April 16, 2013
    Assignee: Pureron Japan Co., Ltd
    Inventors: Masanori Haba, Nan Jiang, Hong-Xing Wang, Akio Hiraki
  • Patent number: 8421327
    Abstract: An emitter includes an electrode, and a number of carbon nanotubes fixed on the electrode. The carbon nanotubes each have a first end and a second end. The first end is electrically connected to the substrate and the second end has a needle-shaped tip. Two second ends of carbon nanotubes have a larger distance therebetween than that of the first ends thereof, which is advantageous for a better screening affection. Moreover, the needle-shaped tip of the second ends of the carbon nanotube has a lower size and higher aspect ratio than the conventional carbon nanotube, which, therefore, is attributed to bear a larger emission current.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: April 16, 2013
    Assignees: Tsingua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Peng Liu, Liang Liu, Shou-Shan Fan
  • Patent number: 8410678
    Abstract: Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the substrate. A path extends between each emission site and a source of liquid metal. Each path is coated with a wetting layer of non-oxidizing metal for wetting the liquid metal. Exemplary non-oxidizing metals that may be used to make the wetting layer include gold and platinum. The wetting layer is sufficiently thin such that some liquid metal is able to flow to each emission site despite any chemical interaction between the liquid metal and the non-oxidizing metal of the wetting layer.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: April 2, 2013
    Assignee: SRI International
    Inventors: Christopher E. Holland, Paul R. Schwoebel, Charles A. Spindt, Eric M. Pearson, Victor M. Aguero
  • Patent number: 8368295
    Abstract: The present disclosure provides an electron emitter. The electron emitter includes a carbon nanotube linear compound. The carbon nanotube linear compound includes a conductive linear support and a carbon nanotube pipe. The conductive linear support is located in the carbon nanotube pipe. A plurality of carbon nanotube peaks extends from one end of the electron emitter.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: February 5, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Shou-Shan Fan
  • Patent number: 8354791
    Abstract: The photomultiplier tube 1 is provided with an upper frame 2 and a lower frame 4 which are arranged so as to oppose each other, with the respective opposing surfaces 20a, 40a made with an insulating material, a side wall part 3 which constitutes a casing together with the frames 2, 4, a plurality of stages of electron multiplying parts 33 which are arrayed so as to be spaced away sequentially from a first end side to a second end side on the opposing surface 40a of the lower frame 4, a photocathode 41 which is installed on the first end side so as to be spaced away from the electron multiplying parts 33, converting incident light from outside to photoelectrons, an anode part 34 which is installed on the second end side so as to be spaced away from the electron multiplying parts 33 to take out electrons multiplied by the electron multiplying parts 33 as a signal, and a wall-like electrode 32 which is arranged so as to enclose the photocathode 41 when viewed from a direction directly opposite to an opposing sur
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: January 15, 2013
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hideki Shimoi, Hiroyuki Kyushima
  • Patent number: 8344607
    Abstract: An electron-emitting device includes an electroconductive member and a lanthanum boride layer on the electroconductive member and further includes an oxide layer between the electroconductive member and the lanthanum boride layer. The oxide layer can contain a lanthanum element. The lanthanum boride layer can be overlaid with a lanthanum oxide layer.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: January 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naofumi Aoki, Shoji Nishida
  • Patent number: 8339022
    Abstract: A field emission electron source having carbon nanotubes includes a CNT string and a conductive base. The CNT string has an end portion and a broken end portion. The end portion is contacted with and electrically connected to the surface of the conductive base. The CNTs at the broken end portion form a tooth-shape structure, wherein some CNTs protrude and higher than the adjacent CNTs. Each protruded CNT functions as an electron emitter.
    Type: Grant
    Filed: November 27, 2010
    Date of Patent: December 25, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Zhuo Chen, Liang Liu, Shou-Shan Fan
  • Patent number: 8319414
    Abstract: An image display apparatus includes a face plate including a low-potential electrode and a plate-like spacer including a longitudinal-direction end. The low-potential electrode is set at a lower potential than that of a resistive anode and is disposed between the resistive anode and a feed electrode. The longitudinal-direction end of the plate-like spacer is disposed between the resistive anode and the feed electrode so as to overlap the low-potential electrode.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: November 27, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Date
  • Patent number: 8304975
    Abstract: There is provided a new electron beam apparatus which improves the instability of an electron emission characteristic and provides a high efficient electron emission characteristic. The electron beam apparatus includes: an insulating member having a recess on its surface; a cathode having a protruding portion extending over the outer surface of the insulating member and the inner surface of the recess; a gate positioned at the outer surface of the insulating member in opposition to the protruding portion; and an anode positioned in opposition to the protruding portion through the gate.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: November 6, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeo Tsukamoto, Ouichi Kubota
  • Patent number: 8274205
    Abstract: The system and method provided herein for limiting the effects of arcing in field-type electron emitter arrays improves the robustness of such arrays. Field-type electron emitter arrays generally have a substrate, an insulator, and a gating electrode. By including a resistive substance in the gate of the emitter array, arcing events may be isolated to a single emitter such that the remaining emitters of an array can continue electron emission and/or the short circuit current of the arc can be limited.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: September 25, 2012
    Assignee: General Electric Company
    Inventors: Colin R. Wilson, Ji-Ung Lee
  • Patent number: 8253700
    Abstract: An exemplary touch panel includes a flexible substrate, a transparent conductive layer, and four electrodes. The flexible substrate includes a surface. The transparent conductive layer is disposed on the surface of the substrate. The transparent conductive layer includes a carbon nanotube layer. The carbon nanotube layer includes carbon nanotubes. The electrodes are separately disposed, and electrically connected with the transparent conductive layer. A display device using the above-described touch panel is also provided.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 28, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8248377
    Abstract: A touch panel includes a first electrode plate, a second electrode plate separated from the first electrode plate. The first electrode plate includes a first substrate and a first conductive layer disposed on a lower surface of the first substrate. The second electrode plate includes a second substrate and a second conductive layer disposed on an upper surface of the second substrate. The first conductive layer and the second conductive layer include a carbon nanotube film respectively.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 21, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Shou-Shan Fan, Ga-Lane Chen
  • Patent number: 8248380
    Abstract: A touch panel includes a first electrode plate and a second electrode plate. The first electrode plate includes a first substrate, and a first conductive layer disposed on a lower surface of the first substrate. The second electrode plate includes a second substrate, a second conductive layer disposed on an upper surface of the second substrate, two first-electrodes, and two second-electrodes. The two first-electrodes and the two second-electrodes are electrically connected to the second conductive layer. At least one of the first conductive layer and the second conductive layer includes a carbon nanotube layer. Each carbon nanotube layer includes a plurality of carbon nanotubes. Further, the present invention also relates to a display device. The display device includes a displaying unit and a touch panel.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 21, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8243030
    Abstract: A touch panel includes a first conductive layer, a second conductive layer and a capacitive sensing member. The first conductive layer includes a plurality of first conductive lines. The second conductive layer separated from the first conductive layer includes a plurality of second conductive lines. One of the plurality of conductive lines is located above the other plurality of conductive lines. The capacitive sensing member is connected to the first conductive lines. At least one of the first and second pluralities of conductive lines includes carbon nanotube wires. The carbon nanotube wires each include a plurality of carbon nanotubes. Further, a display device using the above-described touch panel is also included.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 14, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8237680
    Abstract: A touch panel includes a first electrode plate and a second electrode plate connected to the first electrode plated. The first electrode plate includes a first substrate, and a first conductive layer disposed on the first substrate. The second electrode includes a second substrate, and a second conductive layer disposed on the second substrate. The first or the second conductive layer includes at least one carbon nanotube composite layer.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: August 7, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan, Ga-Lane Chen, Jia-Shyong Cheng, Jeah-Sheng Wu
  • Patent number: 8237674
    Abstract: A touch panel includes a first electrode plate and a second electrode plate separated from the first electrode plate. The first electrode plate includes a first substrate and a first conductive layer located on a lower surface of the first substrate. The second electrode plate includes a second substrate and a second conductive layer located on an upper surface of the second substrate. At least one of the first conductive layer and the second conductive layer includes at least two stacked carbon nanotube layers, each carbon nanotube layer comprising a plurality of carbon nanotubes aligned in a single direction, and the carbon nanotubes in the two adjacent carbon nanotube layers arranged along different directions. A display device adopting the touch panel includes the touch panel and a display element.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 7, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8237673
    Abstract: A touch panel includes a first electrode plate and a second electrode plate. The first electrode plate includes a first substrate, and a first conductive layer disposed on a lower surface of the first substrate. The second electrode plate includes a second substrate, and a second conductive layer disposed on an upper surface of the second substrate. The first conductive layer and the second conductive layer both include a carbon nanotube layer. Each carbon nanotube layer includes a plurality of carbon nanotubes. The first substrate and the second substrate are flexible. Further, the present invention also relates to a display device. The display device includes a displaying unit and a touch panel.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 7, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8237672
    Abstract: An exemplary touch panel includes a substrate, transparent conductive layers, a capacitive sensing circuit, and conductive wires. The transparent conductive layers are disposed on a surface of the substrate and spaced apart from each other. Each transparent conductive layer includes a carbon nanotube layer. The carbon nanotube layer includes carbon nanotubes. The conductive wires respectively electrically connect the transparent conductive layers to the capacitive sensing circuit. A display device using the touch panel is also provided.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 7, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8237670
    Abstract: A touch panel includes a first electrode plate and a second electrode plate. The first electrode plate includes a first substrate, a first conductive layer disposed on a lower surface of the first substrate, and two first-electrodes disposed on opposite ends of the first conductive layer. The second electrode plate separates from the first electrode plate and includes a second substrate, a second conductive layer disposed on an upper surface of the second substrate, and two second-electrodes disposed on opposite ends of the second conductive layer. At least one of the first-electrodes and the second-electrodes includes a carbon nanotube layer. Further, the present invention also relates to a display device. The display device includes a displaying unit and a touch panel.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 7, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8237668
    Abstract: A touch control device includes a transparent substrate, a display element, and a touch panel. The display element is disposed on a surface of the transparent substrate and includes a displaying surface. The displaying surface is located away from the transparent substrate. The touch panel is located on opposite side of the display element from the transparent substrate. The touch panel includes a first electrode plate and a second electrode plate. The first electrode plate includes a first substrate and a first conductive layer disposed on a lower surface of the first substrate. The second electrode plate is separated from the first electrode plate and includes a second flexible substrate and a second conductive layer disposed on an upper surface of the second substrate. The first conductive layer and the second conductive layer both include a carbon nanotube layer.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: August 7, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Liang Liu, Shou-Shan Fan
  • Patent number: 8217565
    Abstract: A stable cold field electron emitter is produced by forming a coating on an emitter base material. The coating protects the emitter from the adsorption of residual gases and from the impact of ions, so that the cold field emitter exhibits short term and long term stability at relatively high pressures and reasonable angular electron emission.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: July 10, 2012
    Assignee: FEI Company
    Inventors: Theodore Carl Tessner, II, Gregory A. Schwind, Lynwood W. Swanson