公开(公告)号：US12027489B2

公开(公告)日：2024-07-02

申请号：US18282005

申请日：2022-03-14

Applicant: NANO-X IMAGING LTD

Inventor： Ukyo Jeong ,  Ghiyuun Kang

IPC: H01L23/00 ,  H01J9/02 ,  H01J35/06

CPC classification number: H01L24/83 ,  H01J9/025 ,  H01J35/065 ,  H01L24/05 ,  H01L24/27 ,  H01L24/29 ,  H01L24/32 ,  H01L24/45 ,  H01L24/48 ,  H01L24/73 ,  H01L24/92 ,  H01L24/06 ,  H01L2224/05073 ,  H01L2224/05155 ,  H01L2224/05573 ,  H01L2224/05644 ,  H01L2224/0603 ,  H01L2224/06181 ,  H01L2224/27442 ,  H01L2224/29139 ,  H01L2224/32227 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/48464 ,  H01L2224/73265 ,  H01L2224/83191 ,  H01L2224/83192 ,  H01L2224/83201 ,  H01L2224/83444 ,  H01L2224/8384 ,  H01L2224/92247

Abstract: A method for fabricating silicon die stacks for electron emitter chips by applying sintering to bind a silicon substrate die to other die layers. Metal powder is applied to the bonding surface of the die, covered with the chip carrier or chip and compressed between two heated plates. The bonding pads of the die may be conductively coupled to corresponding bonding pads of the other die layers.

公开(公告)号：US20240136142A1

公开(公告)日：2024-04-25

申请号：US18070197

申请日：2022-11-28

Applicant: AweXome Ray, Inc.

Inventor： Hong Soo CHOI ,  Young Bae KIM ,  Hyeongu CHO ,  Namkyu LEE ,  Keunsoo JEONG ,  Se Hoon GIHM ,  Jiwon CHOI

IPC: H01J35/06 ,  H01J1/304 ,  H01J35/08 ,  H01J35/14

CPC classification number: H01J35/065 ,  H01J1/304 ,  H01J35/08 ,  H01J35/14 ,  H01J2201/30469 ,  H01J2235/06

Abstract: An emitter, a field emission assembly, and an electromagnetic wave generator are provided, and the emitter is an emitter for emitting electrons in an electromagnetic wave generator and is in the form of a sheet in which a plurality of yarns including carbon nanotube (CNT) fibers are weaved.

公开(公告)号：US11930581B2

公开(公告)日：2024-03-12

申请号：US17732196

申请日：2022-04-28

Applicant: Research Instruments Corporation ,  Brown University

Inventor： Daniel John DeCiccio ,  Christoph Rose-Petruck

IPC: H05G2/00 ,  H01J35/06

CPC classification number: H05G2/008 ,  H01J35/065 ,  H05G2/005 ,  H01J2235/082

Abstract: A modular laser-produced plasma X-ray system includes a liquid metal flow system enclosed within a low-pressure chamber, the flow system including a liquid metal, wherein in at least one location on the liquid metal forms a metal target directly illuminated by laser pulses, a circulation pump within the liquid metal flow system for circulating the liquid metal, a laser pulse emitter configured to transmit laser pulses into the chamber via a laser window, focusing optics, located between the emitter and the metal target, the focusing optics directing the laser pulses to strike the metal target at a target location to form X-ray pulses, and an X-ray window positioned within the chamber to enable the X-ray pulses to exit the chamber.

公开(公告)号：US20240062984A1

公开(公告)日：2024-02-22

申请号：US17766718

申请日：2020-10-16

Applicant: CARESTREAM DENTAL LLC

Inventor： Seshadri JAGANNATHAN ,  Lawrence D. FOLTS

IPC: H01J35/06 ,  H01J9/02

CPC classification number: H01J35/064 ,  H01J9/025 ,  H01J2209/0223

Abstract: A cathode of an electron emitting device is described, where the cathode comprises a carbon nanotube (CNT); a nano-filler material; and a carbonizable polymer, and where the cathode exhibits increased hardness, is formed by high temperature thermal treatment, and is devoid of a substrate. Also described is a method of forming a cathode of an electron emitting device, where the method comprises a) forming a dispersed mixture comprising a carbon nanotube, a nano-filler material, and a carbonizable polymer in a solvent; b) coating and/or extruding the mixture; c) drying the coated and/or extruded mixture to remove at least a substantial portion of the solvent; and d) subjecting the dried mixture to a high temperature thermal treatment; where the method results in the cathode of an electron emitting device having increased hardness.

公开(公告)号：US11901153B2

公开(公告)日：2024-02-13

申请号：US17249558

申请日：2021-03-05

Applicant: PCT Ebeam and Integration, LLC

Inventor： Karl E. Swanson ,  John Charles Drenter ,  Paul Michael Fletcher

IPC: H01J35/08 ,  H01J35/18 ,  H01J35/12 ,  H01J35/06

CPC classification number: H01J35/116 ,  H01J35/13 ,  H01J35/18 ,  H01J35/06 ,  H01J35/186 ,  H01J2235/068 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/165 ,  H01J2235/168 ,  H01J2235/18

Abstract: An x-ray apparatus includes a vacuum chamber that includes a window for exit of x-rays. Electrons are generated at a cathode within the vacuum chamber and accelerated toward a target anode associated with the window. An x-ray generating layer is included as a surface of the target anode to receive the electrons emitted by the cathode and to create x-rays. A blocking path blocks over 70% of the free electrons reaching said target anode from continuing on to exit through the window, while allowing x-rays leaving the x-ray generating layer to continue along the selectively blocking path to exit through the window. The x-ray apparatus is capable of operating at low voltage and relatively high power to reduce the necessary shielding and the corresponding weight of the apparatus yet allow more ready absorption of x-rays by items being irradiated.

公开(公告)号：US11901152B2

公开(公告)日：2024-02-13

申请号：US17874678

申请日：2022-07-27

Applicant: Siemens Healthcare GmbH

Inventor： Peter Geithner ,  Jörg Freudenberger ,  Christoph Jud ,  Anja Fritzler ,  Josef Deuringer ,  Peter Hackenschmied

IPC: H01J35/06 ,  H01J35/24 ,  A61B6/02 ,  A61B6/00 ,  H05G1/52

CPC classification number: H01J35/065 ,  H01J35/24 ,  A61B6/022 ,  A61B6/4007 ,  H01J35/064 ,  H01J2235/068 ,  H05G1/52

Abstract: Some example embodiments provide an x-ray tube for a stereoscopic imaging having an evacuated x-ray tube housing; an electron emitter apparatus in the x-ray tube housing, the electron emitter apparatus including a first field effect emitter with a first emitter surface and a second field effect emitter with a second emitter surface, at least one of the first emitter surface or the second emitter surface being segmented such that a portion of the at least one of the first emitter surface or the second emitter surface can be set relative to the respective overall emitter surface by selectively switching emitter segments of the at least one of the first emitter surface or the second emitter surface; an anode unit in the x-ray tube housing, the anode unit configured to generate x-ray radiation for the stereoscopic imaging as a function of electrons striking two focal points; and a control unit.

公开(公告)号：US11798772B2

公开(公告)日：2023-10-24

申请号：US17292695

申请日：2019-11-07

Applicant: PEKING UNIVERSITY

Inventor： Xianlong Wei

IPC: H01J35/02 ,  H01J35/14 ,  H01J9/18 ,  H01J35/12 ,  H01J35/16 ,  H01J35/18 ,  H01J35/06

CPC classification number: H01J35/025 ,  H01J35/064 ,  H01J35/16 ,  H01J35/186 ,  H01J9/18 ,  H01J35/12 ,  H01J35/147 ,  H01J2235/068

Abstract: Provided are an on-chip miniature X-ray source and a method for manufacturing the same. The on-chip miniature X-ray source includes: an on-chip miniature electron source; a first insulating spacer provided on an electron-emitting side of the on-chip miniature electron source, where the first insulating spacer has a cavity structure; and an anode provided on the first insulating spacer, where a closed vacuum cavity is formed between the on-chip miniature electron source and the anode. The on-chip miniature X-ray source has the advantages of stable X-ray dose, low working requirements for vacuum, fast switch response, capability of integration and batch fabrication, and can be used in various types of small and portable X-ray detection, analysis and treatment devices.

公开(公告)号：US11791123B2

公开(公告)日：2023-10-17

申请号：US17712639

申请日：2022-04-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoon-Ho Song ,  Jun-Tae Kang ,  Jae-Woo Kim ,  Jin-Woo Jeong

IPC: H01J35/16 ,  H01J35/06 ,  H01J35/04

CPC classification number: H01J35/16 ,  H01J35/045 ,  H01J35/064

Abstract: Provided is an X-ray tube which includes a first electrode, a second electrode spaced apart from the first electrode, a target disposed in a lower portion of the second electrode, an emitter on the first electrode, a third electrode which is positioned between the first electrode and the second electrode and includes an opening at a position perpendicularly corresponding to the emitter, and a spacer provided on the third electrode and surrounding the second electrode. The spacer includes a first section located adjacent to the third electrode and a second section disposed on the first section. The spacer includes a ceramic insulator and conductive dopants dispersed within the ceramic insulator. A concentration of the conductive dopants in the first section of the spacer is greater than a concentration of the conductive dopants in the second section. The third electrode is in contact with the first section of the spacer.

公开(公告)号：US11791122B2

公开(公告)日：2023-10-17

申请号：US17167340

申请日：2021-02-04

Applicant: Han Sung Lee

Inventor： Han Sung Lee

IPC: H01J35/06 ,  H01J35/16

CPC classification number: H01J35/065 ,  H01J35/16 ,  H01J2201/30469 ,  H01J2235/062

Abstract: The present disclosure relates to a CNT X-ray source apparatus, and more particularly, to a CNT X-ray source apparatus configured to maximize utilization of the internal space of a CNT X-ray tube body, having grooves made of an insulating material, and provided with a base portion for supporting a plurality of electrodes. With this configuration, mass production is possible. The CNT X-ray source apparatus of the present disclosure includes a cathode electrode; an emitter provided on the cathode electrode and responsible for emitting electrons; a gate electrode disposed above the cathode electrode and spaced apart from the cathode electrode by a predetermined interval; a focusing electrode for preventing scattering of electrons emitted from the emitter; and a base portion responsible for supporting one or more of the cathode electrode, the gate electrode, and the focusing electrode and formed of an insulating material. In this case, one or more grooves for accommodating at least one of the cathode electrode, the gate electrode, and the focusing electrode are formed in the base portion.

公开(公告)号：US11791121B2

公开(公告)日：2023-10-17

申请号：US16868000

申请日：2020-05-06

Applicant: Massachusetts Institute of Technology ,  Instituto Tecnológico y de Estudios Superiores de Monterrey

Inventor： Luis Fernando Velásquez-García ,  Imperio Perales-Martinez

IPC: H01J1/304 ,  H01J49/08 ,  H01J35/06 ,  H01J9/02 ,  F03H1/00

CPC classification number: H01J1/3042 ,  F03H1/0025 ,  H01J9/025 ,  H01J35/064 ,  H01J35/065 ,  H01J49/08

Abstract: A field emission electron source and a method of manufacturing the same. A field emission electron source comprises an emitting electrode and an extractor gate electrode. The emitting electrode comprising a plurality of particles with nanosharp protrusions. The extractor gate electrode comprises a metal. The extractor gate electrode is formed in a same plane as the emitting electrode. The extractor gate electrode is formed surrounding the emitting electrode. A method of manufacturing a field emission electron source comprises forming an emitting electrode comprising a plurality of particles with nanosharp protrusions using a direct ink writing (DIW) printer. The method comprises forming an extractor gate electrode comprising a metal using the DIW printer.