Emissive Type Patents (Class 445/50)
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Patent number: 11875964Abstract: A triple-point cathode coating and method wherein electrically conductive NEA diamond particles cast or mixed with the adhesive medium and electrically insulative NEA diamond particles are cast or mixed with the adhesive medium to form a plurality of exposed junctions between electrically conductive diamond particles and electrically insulative diamond particles to reduce any electrical charges on a structure coated with the coating.Type: GrantFiled: July 2, 2021Date of Patent: January 16, 2024Assignee: Physical Sciences, Inc.Inventors: Jonathan D. Rameau, Nicholas R. Craig
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Patent number: 11404317Abstract: A method for fabricating a semiconductor device includes recessing a first odd hardmask and a first even hardmask to form recessed odd and even hardmasks, forming a first conductive hardmask including first conductive hardmask material on the recessed odd hardmask and a second conductive hardmask on the recessed even hardmask, and forming self-aligned vias at line ends corresponding to the first odd and even conductive lines based at least in part on the first and second conductive hardmasks.Type: GrantFiled: September 24, 2019Date of Patent: August 2, 2022Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: John C. Arnold, Ashim Dutta, Dominik Metzler, Ekmini A. De Silva
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Patent number: 11215171Abstract: A field emission neutralizer is provided. The field emission neutralizer includes a bottom plate and a field emission cathode unit located on the bottom plate. The field emission cathode unit includes a substrate, a shell located on the substrate, a cathode emitter located inside the shell, a mesh grid insulated from the cathode emitter, and a shielding layer insulated from the mesh grid. The cathode emitter includes a cathode substrate and a graphitized carbon nanotube array. The graphitized carbon nanotube array is in electrical contact with the cathode substrate. The graphitized carbon nanotube array is fixed on a surface of the substrate body, and the carbon nanotubes of the graphitized carbon nanotube array are substantially perpendicular to the cathode substrate.Type: GrantFiled: October 23, 2019Date of Patent: January 4, 2022Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Peng Liu, Duan-Liang Zhou, Chun-Hai Zhang, Li Qian, Yu-Quan Wang, Xue-Wei Guo, Li-Yong Ma, Fu-Jun Wang, Shou-Shan Fan
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Patent number: 11195684Abstract: Provided is a field emission apparatus including a pipe-shaped emitter holder comprising an electrically conductive material and a first internal space communicated in a first direction, and an emitter electrode having one or more yarns each having a structure extending in the first direction in which a plurality of CNTs that extend in the first direction are aggregated, and the emitter electrode is inserted in the first internal space while extending in the first direction.Type: GrantFiled: June 23, 2020Date of Patent: December 7, 2021Assignee: AweXome Ray, Inc.Inventors: Hong Soo Choi, Se Hoon Gihm, Sug Chul Kim
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Patent number: 10933440Abstract: A carbon film coating structure and a method for coating that structure onto a work are provided, in which a carbon material such as a carbon nanotube is applied to a work for coating thereof with high density and high integration so that the coating has an outstanding electrical conductivity and thermal conductivity, heat resistance, high strength and flexibility owing to the characteristics of carbon, and in which a carbon such as CNT is applied to the work for coating thereof easily and inexpensively, and with high density and high integration. A carbon material is coated or impregnated on a surface layer of a work. The work can deposit a suboxide or oxide containing metal ions. A porous primary film is formed on the surface layer of the work. The carbon film is coated or impregnated on an irregular part of the surface layer of the primary film.Type: GrantFiled: August 14, 2018Date of Patent: March 2, 2021Inventor: Hideo Yoshida
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Patent number: 9898643Abstract: 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: GrantFiled: December 7, 2015Date of Patent: February 20, 2018Assignees: INTERFACE OPTOELECTRONIC (SHENZHEN) CO., LTD., GENERAL INTERFACE SOLUTION LIMITEDInventors: Chun-Te Chang, Yu-Pi Kuo, Chung-Wu Liu, Chia-Chun Tai, Wei-Chung Chuang, Yen-Heng Huang
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Patent number: 9666401Abstract: 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: GrantFiled: November 2, 2015Date of Patent: May 30, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: So Ra Park, Yoon Ho Song, Jin Woo Jeong, Jae Woo Kim, Min Sik Shin
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Patent number: 9305711Abstract: 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: GrantFiled: March 8, 2012Date of Patent: April 5, 2016Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBAInventors: Jun-ichi Fujita, Takeshi Hikata, Soichiro Okubo, Risa Utsunomiya, Teruaki Matsuba
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Patent number: 9139905Abstract: 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: GrantFiled: February 22, 2011Date of Patent: September 22, 2015Assignee: UChicago Argonne, LLCInventors: Jeffrey W. Elam, Seon W. Lee, Hsien-Hau Wang, Michael J. Pellin, Karen Byrum, Henry J. Frisch
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Patent number: 8900028Abstract: 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: GrantFiled: August 21, 2012Date of Patent: December 2, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Peng Liu, Shou-Shan Fan
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Patent number: 8900029Abstract: 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: GrantFiled: October 22, 2012Date of Patent: December 2, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Peng Liu, Shou-Shan Fan
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Patent number: 8884846Abstract: 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: GrantFiled: February 22, 2008Date of Patent: November 11, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Masahiro Tanaka, Jun Tanaka, Nobuhiko Fukuoka, Hitoshi Azuma
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Publication number: 20140285084Abstract: 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: ApplicationFiled: October 30, 2013Publication date: September 25, 2014Inventors: ARASH AKHAVAN FOMANI, LUIS FERNANDO VELASQUEZ-GARCIA, AKINTUNDE IBITAYO AKINWANDE
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Patent number: 8814622Abstract: 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: GrantFiled: November 17, 2011Date of Patent: August 26, 2014Assignee: Sandia CorporationInventors: Paul J. Resnick, Eric Langlois
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Patent number: 8808049Abstract: 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: GrantFiled: April 15, 2013Date of Patent: August 19, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chang-Hong Liu, Shou-Shan Fan
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Patent number: 8801487Abstract: 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: GrantFiled: March 11, 2013Date of Patent: August 12, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yang Wei, Peng Liu, Liang Liu, Shou-Shan Fan
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Patent number: 8773015Abstract: 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: GrantFiled: November 9, 2010Date of Patent: July 8, 2014Assignees: Sumitomo Chemical Company, Limited, Agency for Science, Technology and ResearchInventors: Kyoko Yamamoto, Jarrett Dumond, Hong Yee Low
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Publication number: 20140148074Abstract: 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: ApplicationFiled: November 15, 2013Publication date: May 29, 2014Applicant: California Institute of TechnologyInventors: Harish Manohara, Valerie Kristof, Risaku Toda
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Patent number: 8727827Abstract: 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: GrantFiled: December 18, 2012Date of Patent: May 20, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Cai-Lin Guo, Jie Tang, Peng Liu, Shou-Shan Fan
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Publication number: 20140111080Abstract: 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: ApplicationFiled: March 13, 2012Publication date: April 24, 2014Applicant: OSRAM GMBHInventors: Jarmila Bilikova, Gerald Haemmer, Achim Hilscher, Pavel Knoll, Alena Michalikova, Petr Rumpertesz, Josef Schlecht, Ales Vojkuvka, Klaus Weingaertner
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Publication number: 20140099852Abstract: 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: ApplicationFiled: December 18, 2012Publication date: April 10, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: CAI-LIN GUO, JIE TANG, PENG LIU, SHOU-SHAN FAN
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Patent number: 8669696Abstract: 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: GrantFiled: December 18, 2012Date of Patent: March 11, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Cai-Lin Guo, Jie Tang, Peng Liu, Shou-Shan Fan
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Patent number: 8662951Abstract: 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: GrantFiled: December 18, 2012Date of Patent: March 4, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Cai-Lin Guo, Jie Tang, Peng Liu, Shou-Shan Fan
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Publication number: 20140030950Abstract: 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: ApplicationFiled: December 12, 2012Publication date: January 30, 2014Inventors: PENG LIU, KAI-LI JIANG, SHOU-SHAN FAN
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Patent number: 8593048Abstract: 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: GrantFiled: November 30, 2010Date of Patent: November 26, 2013Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Ryozo Nonogaki, Toshiyuki Morishita
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Patent number: 8530907Abstract: 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: GrantFiled: June 29, 2011Date of Patent: September 10, 2013Assignee: Photonic Systems, Inc.Inventors: Jianxiao Chen, Charles H. Cox
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Patent number: 8512090Abstract: 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: GrantFiled: January 30, 2013Date of Patent: August 20, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Peng Liu, Hai-Yan Hao, Shou-Shan Fan
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Publication number: 20130203314Abstract: 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: ApplicationFiled: March 11, 2013Publication date: August 8, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
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Publication number: 20130165011Abstract: 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: ApplicationFiled: August 21, 2012Publication date: June 27, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: PENG LIU, SHOU-SHAN FAN
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Publication number: 20130155567Abstract: A discharge electrode includes a surface layer to which a surface treatment that enables solder bonding is applied.Type: ApplicationFiled: September 6, 2011Publication date: June 20, 2013Applicant: PANASONIC CORPORATIONInventors: Takayuki Nakada, Takafumi Omori, Yusuke Yamada, Kazunobu Nakata, Toshihiro Ito, Takashi Kozai, Shinya Murase
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Patent number: 8460049Abstract: 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: GrantFiled: November 10, 2011Date of Patent: June 11, 2013Assignee: Khalifa University of Science and Technology & Research (Kustar)Inventor: Moh'd Rezeq
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Patent number: 8456076Abstract: 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: GrantFiled: July 11, 2008Date of Patent: June 4, 2013Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Toshiyuki Morishita, Yoshinori Terui
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Publication number: 20130115846Abstract: 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: ApplicationFiled: November 8, 2011Publication date: May 9, 2013Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Sanjiv Sambandan, John E. Northrup, Gregory L. Whiting, Robert A. Street
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Patent number: 8430705Abstract: 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: GrantFiled: November 8, 2011Date of Patent: April 30, 2013Assignee: Palo Alto Research Center IncorporatedInventors: Sanjiv Sambandan, John E. Northrup, Gregory L. Whiting, Robert A. Street
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Patent number: 8400052Abstract: 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: GrantFiled: March 31, 2011Date of Patent: March 19, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Peng Liu, Hai-Yan Hao, Shou-Shan Fan
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Patent number: 8388400Abstract: 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: GrantFiled: November 30, 2009Date of Patent: March 5, 2013Assignee: Canon Kabushiki KaishaInventors: Naofumi Aoki, Shoji Nishida
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Patent number: 8371892Abstract: 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: GrantFiled: May 14, 2012Date of Patent: February 12, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yang Wei, Liang Liu, Shou-Shan Fan
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Patent number: 8314539Abstract: 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: GrantFiled: July 31, 2009Date of Patent: November 20, 2012Assignees: Samsung Electronics Co., Ltd., Korea University Industrial & Academic Collaboration FoundationInventors: Yoon-chul Son, Yong-chul Kim, Jeong-na Heo, Byeong-kwon Ju
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Patent number: 8298034Abstract: 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: GrantFiled: December 19, 2008Date of Patent: October 30, 2012Assignee: E I du Pont de Nemours and CompanyInventor: Lap-Tak Andrew Cheng
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Patent number: 8274225Abstract: 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: GrantFiled: April 5, 2010Date of Patent: September 25, 2012Assignee: Canon Kabushiki KaishaInventor: Norihiro Suzuki
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Patent number: 8267734Abstract: 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: GrantFiled: April 14, 2009Date of Patent: September 18, 2012Assignee: National Chiao-Tung UniversityInventors: Chia-Ying Lee, Seu-Yi Li, Pang Lin, Tseung-Yuan Tseng
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Publication number: 20120229011Abstract: 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: ApplicationFiled: November 10, 2010Publication date: September 13, 2012Applicant: IWASAKI ELECTRIC CO., LTD.Inventor: Kazushi Tominaga
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Patent number: 8264137Abstract: 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: GrantFiled: December 18, 2006Date of Patent: September 11, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Yunjun Li
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Patent number: 8246413Abstract: 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: GrantFiled: December 3, 2010Date of Patent: August 21, 2012Assignees: 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
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Publication number: 20120169225Abstract: 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: ApplicationFiled: February 27, 2012Publication date: July 5, 2012Applicant: Asahi Glass Company, LimitedInventors: Kazuhiro ITO, Satoru WATANABE, Naomichi MIYAKAWA, Yutaka KUROIWA, Setsuro ITO
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Publication number: 20120153805Abstract: 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: ApplicationFiled: February 23, 2012Publication date: June 21, 2012Applicant: Asahi Glass Company, LimitedInventors: Satoru WATANABE, Naomichi MIYAKAWA, Yutaka KUROIWA, Kazuhiro ITO, Setsuro ITO, Kei MAEDA
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Patent number: 8183756Abstract: 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: GrantFiled: July 18, 2008Date of Patent: May 22, 2012Assignee: Koninklijke Philips Electronics NVInventors: Zoryana Terletska, Stefan Hauttmann
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Patent number: 8172634Abstract: 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: GrantFiled: December 2, 2010Date of Patent: May 8, 2012Assignee: Honda Motor Co., Ltd.Inventors: Mitsutaka Nishijima, Kenichi Toya, Takashi Iwasa
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Patent number: 8172633Abstract: 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: GrantFiled: April 4, 2007Date of Patent: May 8, 2012Assignee: Industry Academic Cooperation Fundation of Kyunghee UniversityInventors: Kyu Chang Park, Jin Jang, Je Hwang Ryu
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Patent number: 8154185Abstract: 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: GrantFiled: February 12, 2007Date of Patent: April 10, 2012Assignees: The Board of Trustees of the Leland Stanford Junior University, The Regents of the University of CaliforniaInventors: Wanli Yang, Jason D. Fabbri, Nicholas A. Melosh, Zahid Hussain, Zhi-Xun Shen