Emissive Type Patents (Class 445/50)
  • Patent number: 9898643
    Abstract: The present disclosure provides a fingerprint identification device including a substrate, a contact layer, a processing unit, and a plurality of sensor electrodes. The substrate includes a first sub-substrate, a second sub-substrate, and an adhesive layer. The adhesive layer is between the first sub-substrate and the second sub-substrate. A plurality of first sub-holes is defined in the first sub-substrate. A plurality of second sub-holes is defined in the second sub-substrate. A plurality of third sub-holes is defined in the adhesive layer. One of the first sub-holes communicates a corresponding one of the third sub-holes and a corresponding one of the second sub-holes to define a corresponding hole. An end of each of the sensor electrodes is coupled to the processing unit. The other end of each of the sensor electrodes passes through one of the holes, extends to the contact layer, and is covered by the contact layer.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: February 20, 2018
    Assignees: INTERFACE OPTOELECTRONIC (SHENZHEN) CO., LTD., GENERAL INTERFACE SOLUTION LIMITED
    Inventors: Chun-Te Chang, Yu-Pi Kuo, Chung-Wu Liu, Chia-Chun Tai, Wei-Chung Chuang, Yen-Heng Huang
  • Patent number: 9666401
    Abstract: The present disclosure may provide a field emission device with an enhanced beam convergence. For this, the device may include a gate structure disposed between a cathode electrode and an anode electrode, wherein the gate structure includes a gate electrode and an atomic layer sheet disposed on the gate electrode, the gate electrode facing an emitter and having at least one aperture formed therein.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: May 30, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: So Ra Park, Yoon Ho Song, Jin Woo Jeong, Jae Woo Kim, Min Sik Shin
  • Patent number: 9305711
    Abstract: A carbon nanostructure's geometry and electrical characteristics can be controlled. A method for processing a carbon nanostructure according to the present invention includes the steps of: preparing a carbon nanostructure (e.g., a carbon nanotube) (a CNT preparation step); and exposing the carbon nanotube to an energy beam (e.g., an electron beam) while vibrating the carbon nanotube (an exposure step). This facilitates modifying the carbon nanotube in length and electrical characteristics.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: April 5, 2016
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Jun-ichi Fujita, Takeshi Hikata, Soichiro Okubo, Risa Utsunomiya, Teruaki Matsuba
  • Patent number: 9139905
    Abstract: A method and system for providing a micro-channel plate detector. An anodized aluminum oxide membrane is provided and includes a plurality of nanopores which have an Al coating and a thin layer of an emissive oxide material responsive to incident radiation, thereby providing a plurality of radiation sensitive channels for the micro-channel plate detector.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: September 22, 2015
    Assignee: UChicago Argonne, LLC
    Inventors: Jeffrey W. Elam, Seon W. Lee, Hsien-Hau Wang, Michael J. Pellin, Karen Byrum, Henry J. Frisch
  • Patent number: 8900028
    Abstract: A method for making a field emission cathode device, including the following steps: (S1) providing a substrate including a first surface, and a carbon nanotube structure defining a first portion and a second portion, the carbon nanotube structure including a plurality of carbon nanotubes, a longitudinal direction of the plurality of carbon nanotubes being from the first portion to the second portion; (S2) placing the carbon nanotube structure on the first surface of the substrate, and fastening the first portion to the substrate; and (S3) repeatedly rubbing the carbon nanotube structure along the direction from the first portion to the second portion.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: December 2, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, 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: 8884846
    Abstract: A transparent drying material is applied on an inner side of a translucent glass substrate, which is arranged to face a sealing glass substrate whereupon an organic light emitting element is formed, and the sealing glass substrate and the translucent glass substrate are sealed. A polarizing film is arranged on an outer side of the transparent glass substrate. Luminance nonuniformity on a screen is eliminated by permitting an angle formed by a normal line on the surface unevenness of the transparent drying material and a normal line of the translucent glass substrate to be 53 degrees or less.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: November 11, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masahiro Tanaka, Jun Tanaka, Nobuhiko Fukuoka, Hitoshi Azuma
  • Publication number: 20140285084
    Abstract: Methods for fabrication of self-aligned gated tip arrays are described. The methods are performed on a multilayer structure that includes a substrate, an intermediate layer that includes a dielectric material disposed over at least a portion of the substrate, and at least one gate electrode layer disposed over at least a portion of the intermediate layer. The method includes forming a via through at least a portion of the at least one gate electrode layer. The via through the at least one gate electrode layer defines a gate aperture. The method also includes etching at least a portion of the intermediate layer proximate to the gate aperture such that an emitter structure at least partially surrounded by a trench is formed in the multilayer structure.
    Type: Application
    Filed: October 30, 2013
    Publication date: September 25, 2014
    Inventors: ARASH AKHAVAN FOMANI, LUIS FERNANDO VELASQUEZ-GARCIA, AKINTUNDE IBITAYO AKINWANDE
  • 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: 8808049
    Abstract: The present disclosure relates to a method for making the sheet-shaped heat and light source. An array of carbon nanotubes on a substrate is provided. A carbon nanotube film is formed by pressing the array of carbon nanotubes. A first electrode and a second electrode are electrically connected with the carbon nanotube film. Furthermore, a method for heating an object is related.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: August 19, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chang-Hong Liu, Shou-Shan Fan
  • Patent number: 8801487
    Abstract: A method for making an emitter is disclosed. A number of carbon nanotubes in parallel with each other are provided. The carbon nanotubes have a number of first ends and a number of second ends opposite to the number of first ends. The first ends are attached on a first electrode and the second ends are attached on a second electrode. The first electrode and the second electrode are spaced from each other. A voltage is supplied between the first electrode and the second electrode to break the carbon nanotubes.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: August 12, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Peng Liu, Liang Liu, Shou-Shan Fan
  • Patent number: 8773015
    Abstract: Disclosed is a method for manufacturing an organic electroluminescent (EL) element which is provided with a pair of electrodes and two or more organic layers disposed between the electrodes, and which includes light-emitting layers as the two or more organic layers. The manufacturing method for an organic EL element includes: a step for forming one electrode of the pair of electrodes; a step for forming the two or more organic layers which have a periodic structure wherein the propagation direction of light propagating in a direction substantially perpendicular to the thickness direction of the light-emitting layers is inclined in said thickness direction; and a step for forming the other electrode of the pair of electrodes.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: July 8, 2014
    Assignees: Sumitomo Chemical Company, Limited, Agency for Science, Technology and Research
    Inventors: Kyoko Yamamoto, Jarrett Dumond, Hong Yee Low
  • Publication number: 20140148074
    Abstract: Systems and methods in accordance with embodiments of the invention implement carbon nanotube-based field emitters. In one embodiment, a method of fabricating a carbon nanotube field emitter includes: patterning a substrate with a catalyst, where the substrate has thereon disposed a diffusion barrier layer; growing a plurality of carbon nanotubes on at least a portion of the patterned catalyst; and heating the substrate to an extent where it begins to soften such that at least a portion of at least one carbon nanotube becomes enveloped by the softened substrate.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 29, 2014
    Applicant: California Institute of Technology
    Inventors: Harish Manohara, Valerie Kristof, Risaku Toda
  • Patent number: 8727827
    Abstract: A method for making field emission electron source comprises following steps. An insulating layer is coated on outer surface of a linear carbon nanotube structure. A field emission electron source preform is formed by locating a plurality of conductive ring on outer surface of the insulating layer, wherein the plurality of conductive ring is space from each other, and each conductive ring comprises a first ring face and a second ring face opposite to the first ring face. A plurality of field emission electron source is formed by cutting off the plurality of conductive ring, the insulating layer, and the linear carbon nanotube structure, wherein each field emission electron source comprises at least one conductive ring, and a ring face of the conductive ring, end surface of the insulating layer, and end surface of the linear carbon nanotube structure are coplanar.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: May 20, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Cai-Lin Guo, Jie Tang, Peng Liu, Shou-Shan Fan
  • Publication number: 20140111080
    Abstract: A method for producing a primary winding for producing an electrode for discharge lamps includes: producing a primary winding, wherein producing the primary winding comprises: providing a primary core wire, which has a longitudinal axis and consists of an electrically conductive material, winding a cladding wire around the primary core wire along the longitudinal axis of the primary core wire, with the result that the cladding wire forms a primary core wire cladding surrounding the primary core wire, and winding a wrapping wire around the primary core wire cladding at a radial distance from the primary core wire along the longitudinal axis of the primary core wire.
    Type: Application
    Filed: March 13, 2012
    Publication date: April 24, 2014
    Applicant: OSRAM GMBH
    Inventors: Jarmila Bilikova, Gerald Haemmer, Achim Hilscher, Pavel Knoll, Alena Michalikova, Petr Rumpertesz, Josef Schlecht, Ales Vojkuvka, Klaus Weingaertner
  • Publication number: 20140099852
    Abstract: A method for making field emission electron source comprises following steps. An insulating layer is coated on outer surface of a linear carbon nanotube structure. A field emission electron source preform is formed by locating a plurality of conductive ring on outer surface of the insulating layer, wherein the plurality of conductive ring is space from each other, and each conductive ring comprises a first ring face and a second ring face opposite to the first ring face. A plurality of field emission electron source is formed by cutting off the plurality of conductive ring, the insulating layer, and the linear carbon nanotube structure, wherein each field emission electron source comprises at least one conductive ring, and a ring face of the conductive ring, end surface of the insulating layer, and end surface of the linear carbon nanotube structure 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
  • Patent number: 8669696
    Abstract: A field emission electron source array includes a number of field emission electron sources aligned side by side. Each field emission electron source includes a linear carbon nanotube structure, an insulating layer and a conductive ring. The linear carbon nanotube structure has a first end and a second end. The insulating layer is coated on an outer surface of the linear carbon nanotube structure. The first conductive ring includes a first ring face and a second ring face, and the first ring face is coplanar with an end surface of the first end of the linear carbon nanotube structure.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: March 11, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Cai-Lin Guo, Jie Tang, Peng Liu, Shou-Shan Fan
  • Patent number: 8662951
    Abstract: A method for making field emission electron source array includes following steps. An insulating layer is coated on outer surface of a linear carbon nanotube structure. A field emission electron source preform is formed by locating a plurality of conductive rings on outer surface of the insulating layer, wherein the plurality of conductive rings is space from each other, and each conductive ring comprises a first ring face and a second ring face opposite to the first ring face. A field emission electron source array preform is formed by aligning a plurality of field emission electron source performs side by side. The field emission electron source array preform is severed to form a plurality of field emission electron arrays by cutting the plurality of conductive rings.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: March 4, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Cai-Lin Guo, Jie Tang, Peng Liu, Shou-Shan Fan
  • Publication number: 20140030950
    Abstract: A method for making a carbon nanotube field emitter is disclosed. The method includes steps of providing a carbon nanotube layer having a first surface and a second surface opposite to each other, wherein the first surface is divided into a first area and a second area along a first direction by a line, coating a metal layer on the first area of the first surface, and rolling the coated carbon nanotube layer around the first direction to form the carbon nanotube field emitter.
    Type: Application
    Filed: December 12, 2012
    Publication date: January 30, 2014
    Inventors: PENG LIU, KAI-LI JIANG, SHOU-SHAN FAN
  • Patent number: 8593048
    Abstract: Provided are an electron source which allows a high-angle current density operation even at a low extraction voltage, and reduces excess current that causes vacuum deterioration; and an electronic device using the electron source. The electron source has a cathode composed of single-crystal tungsten, and a diffusion source provided in the intermediate portion of the cathode. In the cathode, the angle between the axial direction of the cathode and <100> orientation of the cathode is adjusted so that electrons to be emitted from the vicinity of the boundary between surface and surface formed on the tip of the cathode, are emitted substantially parallel to the axis of the cathode. The electronic device is provided with the electron source.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 26, 2013
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Ryozo Nonogaki, Toshiyuki Morishita
  • 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: 8512090
    Abstract: A method for making a field emission cathode device is provided. A filler, a substrate, and a metal plate are provided. The metal plate has a first surface and a second surface opposite to the first surface, and defines at least one through hole extending through from the first surface to the second surface. At least one electron emitter is inserted into the at least one through hole. The first surface of the metal plate is attached to the substrate. At least a part of the at least one electron emitter is located between the first surface and the substrate. The at least one through hole is filled with the filler to firmly fix the at least one electron emitter.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: August 20, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Hai-Yan Hao, Shou-Shan Fan
  • Publication number: 20130203314
    Abstract: A method for making an emitter is disclosed. A number of carbon nanotubes in parallel with each other are provided. The carbon nanotubes have a number of first ends and a number of second ends opposite to the number of first ends. The first ends are attached on a first electrode and the second ends are attached on a second electrode. The first electrode and the second electrode are spaced from each other. A voltage is supplied between the first electrode and the second electrode to break the carbon nanotubes.
    Type: Application
    Filed: March 11, 2013
    Publication date: August 8, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
  • Publication number: 20130165011
    Abstract: A method for making a field emission cathode device, including the following steps: (S1) providing a substrate including a first surface, and a carbon nanotube structure defining a first portion and a second portion, the carbon nanotube structure including a plurality of carbon nanotubes, a longitudinal direction of the plurality of carbon nanotubes being from the first portion to the second portion; (S2) placing the carbon nanotube structure on the first surface of the substrate, and fastening the first portion to the substrate; and (S3) repeatedly rubbing the carbon nanotube structure along the direction from the first portion to the second portion.
    Type: Application
    Filed: August 21, 2012
    Publication date: June 27, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: PENG LIU, SHOU-SHAN FAN
  • Publication number: 20130155567
    Abstract: A discharge electrode includes a surface layer to which a surface treatment that enables solder bonding is applied.
    Type: Application
    Filed: September 6, 2011
    Publication date: June 20, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Takayuki Nakada, Takafumi Omori, Yusuke Yamada, Kazunobu Nakata, Toshihiro Ito, Takashi Kozai, Shinya Murase
  • Patent number: 8460049
    Abstract: Method of fabricating super nano ion-electron source including: placing an assembly of precursor tip and metal ring around the precursor tip below the apex in a FIM chamber; applying dc current from grounded source to the metal ring to heat the ring; gradually applying high voltage to the precursor tip; wherein the metal ring is exposed to a high electric field from the tip, generating Schottky field emission of electrons from the metal ring, the applied electrical field sufficient to cause electrons to be extracted from the metal ring and accelerated to the shank with energy sufficient to dislodge atoms from the shank; and monitoring the evolution of the tip apex due to movement of dislodged atoms from the shank to the apex while adjusting the electrical field, the current or temperature of the metal ring until the apex forms a sharp nanotip with an atomic scale apex.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: June 11, 2013
    Assignee: Khalifa University of Science and Technology & Research (Kustar)
    Inventor: Moh'd Rezeq
  • 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
  • Publication number: 20130115846
    Abstract: A first side has a first surface on which is located a material, at least a portion of which is to be formed into at least one tip. A second side has a second surface which is heated. At least one of the first and second surfaces being moved so material located on the first surface comes into physical contact with the second surface. Then at least one of the first side and the second side are moved, wherein the physical contact between the material and the second surface is maintained, causing the material to stretch between the second surface and the first surface, generating at least one capillary bridge. Movement is continued until the physical contact between the material and the second surface is broken resulting in the formation of at least one sharp conductive tip.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 9, 2013
    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Sanjiv Sambandan, John E. Northrup, Gregory L. Whiting, Robert A. Street
  • Patent number: 8430705
    Abstract: A first side has a first surface on which is located a material, at least a portion of which is to be formed into at least one tip. A second side has a second surface which is heated. At least one of the first and second surfaces being moved so material located on the first surface comes into physical contact with the second surface. Then at least one of the first side and the second side are moved, wherein the physical contact between the material and the second surface is maintained, causing the material to stretch between the second surface and the first surface, generating at least one capillary bridge. Movement is continued until the physical contact between the material and the second surface is broken resulting in the formation of at least one sharp conductive tip.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: April 30, 2013
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Sanjiv Sambandan, John E. Northrup, Gregory L. Whiting, Robert A. Street
  • Patent number: 8400052
    Abstract: A field emission cathode device includes a substrate, a metal plate attached to the substrate, at least one electron emitter electrical connected with the metal plate, and a filler. The metal plate defines at least one through hole extending through the metal plate. The at least one electron emitter is fixed between the substrate and the metal plate and extends through the at least one through hole. The filler is filled into the at least one through hole to fix the at least one electron emitter.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: March 19, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Hai-Yan Hao, Shou-Shan Fan
  • Patent number: 8388400
    Abstract: The following method is provided: a method of readily fabricating an electron-emitting device, coated with a low-work function material, having good electron-emitting properties with high reproducibility such that differences in electron-emitting properties between electron-emitting devices are reduced. Before a structure is coated with the low-work function material, a metal oxide layer is formed on the structure.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: March 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naofumi Aoki, Shoji Nishida
  • Patent number: 8371892
    Abstract: A method for making the electron emission apparatus is provided. In the method, an insulating substrate including a surface is provided. A number of grids are formed on the insulating substrate and defined by a plurality of electrodes. A number of conductive linear structures are fabricated and supported by the electrodes. The number of conductive linear structures are substantially parallel to the surface and each of the grids contains at least one of the conductive linear structures. The conductive linear structures are cut to form a number of electron emitters. Each of the electron emitters has two electron emission ends defining a gap therebetween.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: February 12, 2013
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Wei, Liang Liu, Shou-Shan Fan
  • Patent number: 8314539
    Abstract: A field electron emitter includes a thin film layer including a carbon nanotube (“CNT”) disposed on a substrate, wherein the thin film layer includes nucleic acid.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: November 20, 2012
    Assignees: Samsung Electronics Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Yoon-chul Son, Yong-chul Kim, Jeong-na Heo, Byeong-kwon Ju
  • Patent number: 8298034
    Abstract: This invention relates to a method for the fabrication of electrical and electronic devices using a photoresist deposited in pre-existing through holes in a device structure and a thick film paste, and to the devices made by such method. The method allows thick film paste deposits in the corners of the holes. This invention also relates to devices made with thick film pastes that are patterned using a diffusion layer made from residual photoresist deposits in a hole.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 30, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Lap-Tak Andrew Cheng
  • Patent number: 8274225
    Abstract: An image display apparatus according to the present invention comprises a plurality of electron emitting devices having an electron emitting portion provided between a cathode electrode and a gate electrode; a cathode wiring connected to the cathode electrode; and a gate wiring connected to the gate electrode and having a resistance higher than the resistance of the cathode wiring, wherein an impedance element having a resistance value of Ry and an electrostatic capacitance of Cy is connected to between the cathode wiring and the cathode electrode, a resistive element having a resistance value of Rx is connected to between the gate wiring and the gate electrode, and |Ry/(1+j?RyCy)|<Rx and Ry>Rx are satisfied, where ? is 100 MHz.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: September 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Norihiro Suzuki
  • Patent number: 8267734
    Abstract: This invention relates to a process for fabricating ZnO nanowires with high aspect ratio at low temperature, which is associated with semiconductor manufacturing process and a gate controlled field emission triode is obtained. The process comprises providing a semiconductor substrate, depositing a dielectric layer and a conducting layer, respectively, on the semiconductor substrate, defining the positions of emitter arrays on the dielectric layer and conducting layer, depositing an ultra thin ZnO film as a seeding layer on the substrate, growing the ZnO nanowires as the emitter arrays by using hydrothermal process, and etching the areas excluding the emitter arrays, then obtaining the gate controlled field emission triode.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: September 18, 2012
    Assignee: National Chiao-Tung University
    Inventors: Chia-Ying Lee, Seu-Yi Li, Pang Lin, Tseung-Yuan Tseng
  • Publication number: 20120229011
    Abstract: A high pressure discharge lamp electrode of the present invention includes a core rod (10), a head (20), and a coil (30) covering the head. The head includes a smaller-diameter section (21) on the core-rod side and a larger-diameter section (22) on a tip side. The coil covers the smaller-diameter section such that a winding-start end portion (30a) of the lowermost layer is positioned at the tip side of the smaller-diameter section, and covers the smaller-diameter section and the larger-diameter section such that a winding-finish end portion (30b) of the uppermost layer is positioned on the larger-diameter section. At least a portion of the coil is welded to the larger-diameter section.
    Type: Application
    Filed: November 10, 2010
    Publication date: September 13, 2012
    Applicant: IWASAKI ELECTRIC CO., LTD.
    Inventor: Kazushi Tominaga
  • Patent number: 8264137
    Abstract: A binder material, inorganic polymer, is used to formulate carbon nanotube pastes. This material can be cured at 200° C. and has a thermal-stability up to 500° C. Low-out gassing of this binder material makes it a good candidate for long life field emission devices. Due to better adhesion with this binder material, a strong adhesive peelable polymer from liquid form can be applied on the CNT cathode to achieve a uniform activation with even contact and pressure on the surface. The peelable polymer films may be used both as an activation layer and a mask layer to fabricate high-resolution patterned carbon nanotube cathodes for field emission devices using lithographic processes.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: September 11, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yunjun Li
  • Patent number: 8246413
    Abstract: A method for making a field emission device includes the following steps. An insulative substrate is provided. An electron pulling electrode is formed on the insulative substrate. A secondary electron emission layer is formed on the electron pulling electrode. A first dielectric layer is fabricated. The first dielectric layer has a second opening to expose the secondary electron emission layer. A cathode plate having an electron output portion is provided. An electron emission layer is formed on part surface of the cathode plate. The cathode plate is placed on the first dielectric layer. The electron output portion and the second opening have at least one part overlapped, and at least one part of the electron emission layer is oriented to the secondary electron emission layer via the second opening.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: August 21, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Duan-Liang Zhou, Pi-Jin Chen, Zhao-Fu Hu, Cai-Lin Guo, Bing-Chu Du, Shou-Shan Fan
  • Publication number: 20120169225
    Abstract: An electrode for a discharge lamp is provided with a mayenite compound in at least a part of the electrode that emits secondary electrons, and the mayenite compound is fired in a vacuum atmosphere with an oxygen partial pressure of 10?3 Pa or less, an inert gas atmosphere with an oxygen partial pressure of 10?3 Pa or less, or a reducing atmosphere with an oxygen partial pressure of 10?3 Pa or less.
    Type: Application
    Filed: February 27, 2012
    Publication date: July 5, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Kazuhiro ITO, Satoru WATANABE, Naomichi MIYAKAWA, Yutaka KUROIWA, Setsuro ITO
  • Publication number: 20120153805
    Abstract: An electrode for a discharge lamp includes an electrode body configured to emit thermal electrons. The electrode body is formed by a sintered body of a conductive mayenite compound.
    Type: Application
    Filed: February 23, 2012
    Publication date: June 21, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Satoru WATANABE, Naomichi MIYAKAWA, Yutaka KUROIWA, Kazuhiro ITO, Setsuro ITO, Kei MAEDA
  • Patent number: 8183756
    Abstract: A thermionic electron emitter (1) is proposed comprising an emitter part (2) with a substantially flat electron emission surface (3) and a bordering surface (5) adjacent thereto. In order to better absorb main stress loads (L) induced by external forces, the emitter part is provided with an anisotropic polycrystalline material having a crystal grain structure of elongated interlocked grains the longitudinal direction (G) of which is oriented substantially perpendicular to the direction (L) of the main stress loads occurring under normal operating conditions.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: May 22, 2012
    Assignee: Koninklijke Philips Electronics NV
    Inventors: Zoryana Terletska, Stefan Hauttmann
  • Patent number: 8172633
    Abstract: The present invention relates to a field emission display and a manufacturing method of the same having selective positioning of electron field emitters. More specifically, the present invention provides a field emission display and a manufacturing method of the same having selective positioning of electron field emitters which can prevent a cross-talk that is a mutual interference phenomenon between pixels and improve uniformity of pixels based on uniform electron emission by deciding positions of carbon nano-tubes which are sources of electron emission and growing carbon nano-tubes before the structure of electrodes is formed, and forming spacers directly on electrodes such that the spacers divide carbon nano-tubes formed uniformly and selectively into pixel units.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: May 8, 2012
    Assignee: Industry Academic Cooperation Fundation of Kyunghee University
    Inventors: Kyu Chang Park, Jin Jang, Je Hwang Ryu
  • Patent number: 8172634
    Abstract: To provide a manufacturing method of a field emission cathode, which method exerts no adverse effect on element characteristics at the time when etching is performed with an ion beam. A sacrificial layer 4 made of a thermosetting resin is formed on a gate electrode layer 3. An opening section 5 is formed in the sacrificial layer 4 and the gate electrode layer 3 by irradiating a focused ion beam, and a hole section 6 is formed by etching the insulating layer 2 by using the sacrificial layer 4 and the gate electrode layer 3 as a mask. An emitter electrode 8 is formed in the hole section 6, and the emitter material 7 on the sacrificial layer 4 is removed together with the sacrificial layer 4 on the gate electrode layer 3.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: May 8, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Mitsutaka Nishijima, Kenichi Toya, Takashi Iwasa
  • Patent number: 8154185
    Abstract: Provided are electron emitters based upon diamondoid monolayers, preferably self-assembled higher diamondoid monolayers. High intensity electron emission has been demonstrated employing such diamondoid monolayers, particularly when the monolayers are comprised of higher diamondoids. The application of such diamondoid monolayers can alter the band structure of substrates, as well as emit monochromatic electrons, and the high intensity electron emissions can also greatly improve the efficiency of field-effect electron emitters as applied to industrial and commercial applications.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: April 10, 2012
    Assignees: The Board of Trustees of the Leland Stanford Junior University, The Regents of the University of California
    Inventors: Wanli Yang, Jason D. Fabbri, Nicholas A. Melosh, Zahid Hussain, Zhi-Xun Shen
  • Patent number: 8101467
    Abstract: At least one or more of a conductive layer which forms a wiring or an electrode and a pattern necessary for manufacturing a display panel such as a mask for forming a predetermined pattern is formed by a method capable of selectively forming a pattern to manufacture a liquid crystal display device. A droplet discharge method capable of forming a predetermined pattern by selectively discharging a droplet of a composition in accordance with a particular object is used as a method capable of selectively forming a pattern in forming a conductive layer, an insulating layer, or the like.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: January 24, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Shinji Maekawa, Makoto Furuno, Osamu Nakamura, Keitaro Imai
  • Patent number: 8087966
    Abstract: The invention relates to a method for the thermal treatment of tungsten electrodes having a fibrous mocrostructure and being free from thorium oxide for high-pressure discharge lamps, to such a tungsten electrode free from thorium oxide, to a method of manufacturing a high-pressure gas discharge lamp with at least one such tungsten electrode free from thorium oxide, to a high-pressure gas discharge lamp with at least one such tungsten electrode free from thorium oxide, and to a lighting unit with at least one such high-pressure gas discharge lamp.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: January 3, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Gerhard Hebbinghaus, Jozef Merx
  • Patent number: 8084927
    Abstract: A thermal electron emitter includes at least one carbon nanotube twisted wire and a plurality of electron emission particles mixed with the twisted wire. The carbon nanotube twisted wire comprises a plurality of carbon nanotubes. A work function of the electron emission particles is lower than the work function of the carbon nanotubes. A thermal electron emission device using the thermal electron emitter is also related.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: December 27, 2011
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Lin Xiao, Liang Liu, Chang-Hong Liu, Shou-Shan Fan
  • Patent number: 8080314
    Abstract: Methods and articles providing for precise aligning, positioning, shaping, and linking of nanotubes and carbon nanotubes. An article comprising: a solid surface comprising at least two different surface regions including: a first surface region which comprises an outer boundary and which is adapted for carbon nanotube adsorption, and a second surface region which is adapted for preventing carbon nanotube adsorption, the second region forming an interface with the outer boundary of the first region, at least one carbon nanotube which is at least partially selectively adsorbed at the interface. The shape and size of the patterns on the surface and the length of the carbon nanotube can be controlled to provide for selective interfacial adsorption.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: December 20, 2011
    Assignee: Northwestern University
    Inventors: Chad A. Mirkin, Yuhuang Wang, Daniel Maspoch
  • Patent number: 8080930
    Abstract: Spindt-type field-emission cathodes for use in electric propulsion (EP) systems having self-assembling nanostructures that can repeatedly regenerate damaged cathode emitter nanotips. A nanotip is created by applying a negative potential near the surface of a liquefied base metal to create a Taylor cone converging to a nanotip, and solidifying the Taylor cone for use as a field-emission cathode. When the nanotip of the Taylor cone becomes sufficiently blunted or damaged to affect its utility, the base metal is re-liquefied by application of a heat source, a negative potential is reapplied to the surface of the base metal to recreate the Taylor cone, and a new nanotip is generated by solidifying the base metal.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: December 20, 2011
    Assignee: Michigan Technological University
    Inventor: Lyon Bradley King