公开(公告)号：US5646474A

公开(公告)日：1997-07-08

申请号：US411249

申请日：1995-03-27

Applicant: Roger W. Pryor

Inventor： Roger W. Pryor

IPC: C23C14/06 ,  C23C14/28 ,  H01J1/30 ,  H01J1/304 ,  H01J9/02 ,  H01J19/24 ,  H01J21/04 ,  H01J1/05

CPC classification number: H01J1/30 ,  C23C14/0647 ,  C23C14/28

Abstract: A cold cathode is formed of n-type boron nitride. The cathode may include a layer of diamond underlying the boron nitride. The cathodes are made by laser ablation or by sputtering. Electronic devices utilizing the boron nitride cathodes are also described.

Abstract translation: 冷阴极由n型氮化硼形成。 阴极可以包括氮化硼下面的金刚石层。 阴极通过激光烧蚀或溅射制成。 还描述了利用氮化硼阴极的电子器件。

公开(公告)号：US4095133A

公开(公告)日：1978-06-13

申请号：US780963

申请日：1977-03-24

Applicant: Arthur Marie Eugene Hoeberechts

Inventor： Arthur Marie Eugene Hoeberechts

IPC: H01J1/30 ,  H01J1/304 ,  H01J9/02 ,  H01J1/16 ,  H01J1/05

CPC classification number: H01J1/3042

Abstract: A field emission device and method of forming same, comprising a substrate on which at least one conical electrode is provided, which substrate, with the exception of the proximity of the tip of the electrode, is covered with a layer of a dielectric material on which a conductive layer is present at least locally, in which in order to form an integrated accelerating electrode the conductive layer extends in the direction of the punctiform tip of the electrode to beyond the dielectric layer and shows an aperture above the tip so that the conductive layer forms a cap-shaped accelerating electrode surrounding the conical electrode.

公开(公告)号：US3689794A

公开(公告)日：1972-09-05

申请号：US3689794D

申请日：1971-02-22

Applicant: PHILIPS CORP

Inventor： ESDONK JOHANNES VAN

IPC: H01J1/16 ,  H01J3/02 ,  H01J29/04 ,  H01J37/065 ,  H01J17/06 ,  H01J1/05 ,  H01J1/15

CPC classification number: H01J37/065 ,  H01J1/16 ,  H01J3/027 ,  H01J29/04

Abstract: A punctiform cathode for detachable tubes consisting of a tantalum plate which is secured to the tops of one or more Vshaped filaments.

Abstract translation: 用于可拆卸管的点状阴极，其由固定到一个或多个V形细丝的顶部的钽板组成。

公开(公告)号：US3454816A

公开(公告)日：1969-07-08

申请号：US3454816D

申请日：1967-08-03

Applicant: SIEMENS AG

Inventor： HOFFMANN HERBERT ,  VITZTHUM DIETHER

IPC: H01J1/28 ,  H01J1/14 ,  H01J1/05 ,  H01J19/02

CPC classification number: H01J1/28

公开(公告)号：US20250149285A1

公开(公告)日：2025-05-08

申请号：US18838365

申请日：2022-11-09

Applicant: WESTLAKE UNIVERSITY

Inventor： Xijun LI

IPC: H01J1/05

Abstract: Provided are an electron emission apparatus and an electronic apparatus which includes a fire-resistant container and a heating power supply, the fire-resistant container being provided with a cavity part, the cavity part having a certain degree of vacuum, an electron emission material being arranged in the cavity part, at least one through hole being formed in the bottom of the fire-resistant container, and after being melted by heating, the electron emission material passing through the through hole so as to have an arc-shaped outwards-convex liquid surface and to emit electrons outwards. The embodiments of the present disclosure have a relatively good electron field emission effect and a high degree of product structure consistency, and achieve easy commissioning. The service life of the electron emission apparatus can be remarkably prolonged compared with that of a traditional thermal field emission or cold field emission filament.

公开(公告)号：US11295925B2

公开(公告)日：2022-04-05

申请号：US17434833

申请日：2020-07-13

Applicant: Param Corporation

Inventor： Hiroshi Yasuda ,  Yoshihisa Ooae ,  Tatsuya Shibaoka ,  Hidekazu Murata

IPC: H01J37/073 ,  H01J37/065 ,  H01J1/05 ,  H01J37/305

Abstract: An electron gun device according to the present invention emits an electron beam by means of heating to a high temperature in a vacuum. According to the present invention, the surface of a material (108, 125), which emits an electron beam, is a hydrogenated metal that is melted and in a liquid state during a high-temperature operation; the liquid hydrogenated metal is contained in a hollow cover tube container (102, 124), which is in a solid state during the high-temperature operation, in the form of a hydrogenated liquid metal or in the form of a liquid metal before hydrogenation, and heated together with the cover tube container (102, 124) to a high temperature; subsequently, the hydrogenated liquid metal is exposed from the cover tube container (102, 124) and forms a liquid surface where gravity, the electric field and the surface tension of the liquid surface are balanced; and an electron beam is emitted from the exposed surface of the hydrogenated liquid metal.

公开(公告)号：US10685808B2

公开(公告)日：2020-06-16

申请号：US16511067

申请日：2019-07-15

Applicant: Massachusetts Institute of Technology

Inventor： Paulo C. Lozano ,  Steven Mark Arestie

IPC: H01J37/08 ,  C25F3/14 ,  H01J1/05 ,  H01J9/02 ,  B01L3/00 ,  H01J49/04

Abstract: An ionic liquid ion source can include a microfabricated body including a base and a tip. The body can be formed of a porous material compatible with at least one of an ionic liquid or room-temperature molten salt. The body can have a pore size gradient that decreases from the base of the body to the tip of the body, such that the at least one of an ionic liquid or room-temperature molten salt is capable of being transported through capillarity from the base to the tip.

公开(公告)号：US10236154B2

公开(公告)日：2019-03-19

申请号：US15805050

申请日：2017-11-06

Applicant: Massachusetts Institute of Technology

Inventor： Paulo C. Lozano ,  Steven Mark Arestie

IPC: H01J37/08 ,  C25F3/14 ,  H01J9/02 ,  H01J1/05 ,  B01L3/00 ,  H01J49/04

Abstract: An ionic liquid ion source can include a microfabricated body including a base and a tip. The body can be formed of a porous material compatible with at least one of an ionic liquid or room-temperature molten salt. The body can have a pore size gradient that decreases from the base of the body to the tip of the body, such that the at least one of an ionic liquid or room-temperature molten salt is capable of being transported through capillarity from the base to the tip.

公开(公告)号：US10049847B2

公开(公告)日：2018-08-14

申请号：US15700297

申请日：2017-09-11

Applicant: Korea University Research and Business Foundation

Inventor： Cheol Jin Lee ,  Dong Hoon Shin ,  Ki Nam Yun ,  Yu Ning Sun

IPC: H01J1/05 ,  H01J9/02 ,  H01J1/304 ,  H01J29/04

Abstract: The present disclosure relates to a manufacturing method for an electron emitting device using a graphite adhesive material. A method of preparing paste for forming a cathode of an electron emitting device includes: mixing and dispersing a nanomaterial for electron emission and a graphite filler in a solvent; drying a mixed solution in which the nanomaterial and the graphite filler are mixed; and preparing paste by mixing a graphite binder with the dried mixture.

公开(公告)号：US07816848B2

公开(公告)日：2010-10-19

申请号：US11986850

申请日：2007-11-26

Applicant: Peng Liu ,  Shou-Shan Fan ,  Liang Liu ,  Kai-Li Jiang

Inventor： Peng Liu ,  Shou-Shan Fan ,  Liang Liu ,  Kai-Li Jiang

IPC: H01J1/05

CPC classification number: H01J1/316 ,  B82Y10/00 ,  H01J2201/30469 ,  H01J2201/3165

Abstract: A surface-conduction electron emitter includes a substrate, two electrodes disposed on the substrate and parallel to each other, and a plurality of line-shaped carbon nanotube elements fixed on at least one electrode. One end of each carbon nanotube element points to the other electrode. An electron source using the surface-conduction electron emitter includes a substrate, a plurality of electrodes disposed on the substrate and parallel to each other, and a plurality of line-shaped carbon nanotube elements fixed on at least one electrode. One end of each carbon nanotube element points to the other electrode.

Abstract translation: 表面传导电子发射体包括基板，设置在基板上的彼此平行的两个电极以及固定在至少一个电极上的多个线状碳纳米管元件。 每个碳纳米管元件的一端指向另一个电极。 使用表面传导电子发射体的电子源包括基板，设置在基板上的多个电极并且彼此平行，以及固定在至少一个电极上的多个线状碳纳米管元件。 每个碳纳米管元件的一端指向另一个电极。