公开(公告)号：US20240029989A1

公开(公告)日：2024-01-25

申请号：US18258461

申请日：2021-12-20

Applicant: Denka Company Limited

Inventor： Hiromitsu CHATANI

IPC: H01J1/146 ,  H01J1/16 ,  H01J37/065

CPC classification number: H01J1/146 ,  H01J1/16 ,  H01J37/065 ,  H01J2237/06308

Abstract: A method for manufacturing an electron source includes steps of sandwiching a welding object in which a tip of an electron emission material and a tungsten filament overlap in direct contact between a pair of welding electrodes, and welding the tip and the tungsten filament by causing a current to flow while pressing forces are applied to the welding object by the pair of welding electrodes. A thickness of the welding object is within a range of 50 to 500 μm.

公开(公告)号：US10714292B2

公开(公告)日：2020-07-14

申请号：US15665659

申请日：2017-08-01

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Neville C. Luhmann, Jr. ,  Gordon Soekland ,  Diana Gamzina ,  Na Li

IPC: H01J9/04 ,  C04B35/624 ,  C04B35/626 ,  C04B35/64 ,  C04B35/495 ,  C04B35/50 ,  H01J1/146 ,  H01J1/142 ,  C01G41/00

Abstract: Methods for fabricating refractory metal scandate nanocomposite powders with homogeneous microstructured refractory metal grains and a uniform nanosized dispersion of scandia are provided. The powders prepared by the sol-gel methods have a spherical morphology, a narrow distribution of particle sizes and a very uniform dispersion of nanosized scandia particles joined to the tungsten grains. The powder particle sizes can range from nanometers to micrometers. The powders can be pressed into porous cathode structures that can be impregnated with emissive materials to produce high current density and long life cathodes for high-power terahertz vacuum electron devices. The sol-gel fabrication methods allow control over the materials, particle size, particle composition and pore size and distribution of the cathode structure by manipulation of the process parameters.

公开(公告)号：US07375460B2

公开(公告)日：2008-05-20

申请号：US10453822

申请日：2003-06-04

Applicant: Yoshiki Ishizuka ,  Katsuyuki Naito ,  Masahiko Yamamoto

Inventor： Yoshiki Ishizuka ,  Katsuyuki Naito ,  Masahiko Yamamoto

IPC: H01J1/146 ,  H01J1/304 ,  H01J9/02

CPC classification number: B82Y10/00 ,  H01J1/312 ,  H01J9/022

Abstract: There is provided an electron emitting device, including a substrate, a pair of electrodes formed on the substrate and spaced apart from each other, a pair of electrically conductive layers formed on the electrodes, respectively, a distance between the electrically conductive layers being shorter than a distance between the electrodes, and an electron emitting layer formed between the electrically conductive layers and containing carbon and tin.

Abstract translation: 提供了一种电子发射器件，包括衬底，形成在衬底上并彼此间隔开的一对电极，分别形成在电极上的一对导电层，导电层之间的距离短于 电极之间的距离，以及形成在导电层之间并且包含碳和锡的电子发射层。

公开(公告)号：US06849996B2

公开(公告)日：2005-02-01

申请号：US10452037

申请日：2003-05-30

Applicant: Shankar Madras Venugopal ,  Alok M. Srivastava ,  Holly Ann Comanzo ,  Vikas Midha ,  William Winder Beers ,  Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam

Inventor： Shankar Madras Venugopal ,  Alok M. Srivastava ,  Holly Ann Comanzo ,  Vikas Midha ,  William Winder Beers ,  Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam

IPC: C01G35/00 ,  C01G1/02 ,  H01J1/00 ,  H01J1/14 ,  H01J1/146 ,  H01J1/38 ,  H01J1/48 ,  H01J9/04 ,  H01J61/04 ,  H01J61/06 ,  H01J61/067 ,  H01J61/073

CPC classification number: H01J1/146 ,  H01J1/14 ,  H01J61/0677 ,  H01J61/0737

Abstract: An electron emissive composition comprises a barium tantalate composition of the formula (Ba1−x, Cax, Srp, Dq)6(Ta1−y, Wy, Et, Fu, Gv, Caw)2O(11±δ) where δ is an amount of about 0 to about −3; and wherein D is either an alkali earth metal ion or an alkaline earth ion; E, F, and G, are alkaline earth ions and/or transition metal ion; x is an amount of up to about 0.7; y is an amount of up to about 1; p and q are amounts of up to about 0.3; and t is an amount of about 0.05 to about 0.10, u is an amount of up to about 0.5, v is an amount of up to about 0.5 and w is an amount of up to about 0.25. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition with a binder; and sintering the barium tantalate composition with the binder at a temperature of about 1000° C. to about 1700° C.

Abstract translation: 电子发射组合物包含式（Ba1-x，Cax，Srp，Dq）6（Ta1-y，Wy，Et，Fu，Gv，Caw）2O（11±δ）的钽酸钡组合物，其中δ是量 约0至约-3; 并且其中D是碱土金属离子或碱土金属离子; E，F和G是碱土离子和/或过渡金属离子; x是高达约0.7的量; y是高达约1的量; p和q是高达约0.3的量; 并且t为约0.05至约0.10的量，u为至多约0.5的量，v为至多约0.5的量，w为高达约0.25的量。 制造电子发射组合物的方法包括将钡钽酸盐组合物与粘合剂混合; 并在约1000℃至约1700℃的温度下用粘合剂烧结钽酸钡组合物。

公开(公告)号：US5730637A

公开(公告)日：1998-03-24

申请号：US665392

申请日：1996-06-18

Applicant: Shigeo Suzuki ,  Hidenobu Shintaku ,  Taku Watanabe ,  Mitsuo Asabe ,  Kazuo Takahashi ,  Yoshiro Abe ,  Hiroki Kono ,  Kazunori Hirao

Inventor： Shigeo Suzuki ,  Hidenobu Shintaku ,  Taku Watanabe ,  Mitsuo Asabe ,  Kazuo Takahashi ,  Yoshiro Abe ,  Hiroki Kono ,  Kazunori Hirao

IPC: H01J1/146 ,  H01J9/02 ,  H01J17/06 ,  H01J17/49

CPC classification number: H01J1/146 ,  H01J17/066 ,  H01J17/492 ,  H01J9/02

Abstract: A DC gas discharge type image display device includes a front glass substrate; a rear glass substrate facing the front glass substrate, interposing a discharge gas therebetween; a set of anodes including a plurality of line electrodes formed on the rear glass substrate; a set of cathodes including a plurality of line electrodes placed on the front glass substrate so as to perpendicularly cross the set of anodes; and a plurality of discharge cells, each being provided so as to correspond to each of the cross points of the set of anodes and the set of cathodes. The device is driven in a refresh driving method or a memory driving method. As to the production of this device, the set of cathodes is formed by a spraying method. The cathodes are made from aluminum, nickel, an aluminum alloy or a nickel alloy. The discharge gas is a mixed gas of He and Xe.

Abstract translation: DC气体放电型图像显示装置包括前玻璃基板; 面向前玻璃基板的后玻璃基板，在其间插入放电气体; 一组阳极，包括形成在后玻璃基板上的多个线电极; 一组阴极，包括放置在前玻璃基板上的多个线电极，以便垂直地穿过该组阳极; 以及多个放电单元，每个放电单元被设置为对应于该组阳极和该组阴极中的每个交叉点。 该装置以刷新驱动方法或存储器驱动方式驱动。 关于该装置的制造，通过喷射法形成阴极组。 阴极由铝，镍，铝合金或镍合金制成。 放电气体是He和Xe的混合气体。

公开(公告)号：US2497111A

公开(公告)日：1950-02-14

申请号：US76357447

申请日：1947-07-25

Applicant: EITEL MCCULLOUGH INC

Inventor： WILLIAMS PAUL D

IPC: H01J1/146 ,  H01J19/30

CPC classification number: H01J19/30 ,  H01J1/146 ,  H01J2893/002 ,  Y10T428/292

公开(公告)号：US11195686B2

公开(公告)日：2021-12-07

申请号：US17067734

申请日：2020-10-11

Applicant: Tsinghua University ,  HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： Xin-He Yang ,  Peng Liu ,  Kai-Li Jiang ,  Shou-Shan Fan

IPC: H01J9/04 ,  H01J1/144 ,  H01J1/146 ,  H01J1/304

Abstract: A thermionic emission device comprises a first electrode, a second electrode, a single carbon nanotube, an insulating layer and a gate electrode. The gate electrode is located on a first surface of the insulating layer. The first electrode and the second electrode are located on a second surface of the insulating layer and spaced apart from each other. The carbon nanotube comprises a first end, a second end opposite to the first end, and a middle portion located between the first end and the second end. The first end of the carbon nanotube is electrically connected to the first electrode, and the second end of the carbon nanotube is electrically connected to the second electrode.

公开(公告)号：US11075049B2

公开(公告)日：2021-07-27

申请号：US16601620

申请日：2019-10-15

Applicant: The Government of the United States of America, as represented by the Secretary of the Navy

Inventor： Boris N. Feigelson ,  James A. Wollmershauser ,  Kedar Manandhar

IPC: H01J9/04 ,  B22F1/02 ,  H01J1/146 ,  H01J1/144 ,  H01J1/28 ,  H01J1/142 ,  B22F3/26

Abstract: A thermionic dispenser cathode having a refractory metal matrix with scandium and barium compounds in contact with the metal matrix and methods for forming the same. The invention utilizes atomic layer deposition (ALD) to form a nanoscale, uniform, conformal distribution of a scandium compound on tungsten surfaces and further utilizes in situ high pressure consolidation/impregnation to enhance impregnation of a BaO—CaO—Al2O3 based emissive mixture into the scandate-coated tungsten matrix or to sinter a tungsten/scandate/barium composite structure. The result is a tungsten-scandate thermionic cathode having improved emission.

公开(公告)号：US20200043691A1

公开(公告)日：2020-02-06

申请号：US16601620

申请日：2019-10-15

Applicant: The Government of the United States of America, as represented by the Secretary of the Navy

Inventor： Boris N. Feigelson ,  James A. Wollmershauser ,  Kedar Manandhar

IPC: H01J9/04 ,  B22F1/02 ,  H01J1/146 ,  H01J1/144 ,  H01J1/28 ,  H01J1/142 ,  B22F3/26

Abstract: A thermionic dispenser cathode having a refractory metal matrix with scandium and barium compounds in contact with the metal matrix and methods for forming the same. The invention utilizes atomic layer deposition (ALD) to form a nanoscale, uniform, conformal distribution of a scandium compound on tungsten surfaces and further utilizes in situ high pressure consolidation/impregnation to enhance impregnation of a BaO—CaO—Al2O3 based emissive mixture into the scandate-coated tungsten matrix or to sinter a tungsten/scandate/barium composite structure. The result is a tungsten-scandate thermionic cathode having improved emission.

公开(公告)号：US20170169981A1

公开(公告)日：2017-06-15

申请号：US15371511

申请日：2016-12-07

Applicant: HORIBA STEC, CO., LTD.

Inventor： Kohei SASAI ,  Toshihiro IKEYAMA ,  Toshiaki SAKAI

IPC: H01J1/146 ,  H01J49/42 ,  H01J9/04

CPC classification number: H01J1/146 ,  H01J9/042 ,  H01J49/08 ,  H01J49/4215

Abstract: In order to provide a thermionic emission filament capable of ensuring a long life and improving an analysis accuracy of a mass spectrometer using the thermionic emission filament, in the thermionic emission filament including a core member through which electric current flows and an electron emitting layer which is formed so as to cover a surface of the core member, the electron emitting layer is configured to have denseness for substantial gas-tight integrity.