公开(公告)号：US11967479B2

公开(公告)日：2024-04-23

申请号：US18247260

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Jian Zhang

IPC: H01J1/304 ,  H01J9/02

CPC classification number: H01J1/304 ,  H01J9/025

Abstract: A field emission cathode device and method for forming a field emission cathode device involve a cathode element having a field emission surface disposed in spaced-apart relation to a gate electrode element so as to define a gap between the field emission surface and the gate electrode element. The gate electrode element extends laterally between opposing anchored ends. The gate electrode element is arranged to deform away from the field emission surface in response to heat, so as to increase the gap between the field emission surface and the gate electrode element.

公开(公告)号：US20230369002A1

公开(公告)日：2023-11-16

申请号：US18247257

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Jian ZHANG

IPC: H01J1/46 ,  H01J9/18 ,  H01J1/304

CPC classification number: H01J1/46 ,  H01J9/18 ,  H01J1/304

Abstract: A field emission cathode device and formation method involves a rotating field emission cathode including a field emission material deposited on a surface thereof, the field emission cathode rotating about an axis and being electrically connected to ground, and a planar gate electrode extending parallel to the surface of the rotating field emission cathode and defining a gap therebetween. A gate voltage source is electrically connected to the gate electrode and is arranged to interact therewith to generate an electric field, with the electric field inducing a portion of the surface of the rotating field emission cathode adjacent to the gate electrode to emit electrons from the field emission material toward and through the gate electrode.

公开(公告)号：US12183570B2

公开(公告)日：2024-12-31

申请号：US18247263

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Cheng Qian

IPC: H01J9/02

Abstract: A method for fabricating a field emission cathode, the field emission cathode including a substrate having a field emission layer engaged therewith, where the field emission layer includes a plurality of purified carbon nanotubes. The carbon nanotubes are purified via a graphitization or annealing process.

公开(公告)号：US20240079196A1

公开(公告)日：2024-03-07

申请号：US18247260

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Jian ZHANG

IPC: H01J1/304 ,  H01J9/02

CPC classification number: H01J1/304 ,  H01J9/025

Abstract: A field emission cathode device and method for forming a field emission cathode device involve a cathode element having a field emission surface disposed in spaced-apart relation to a gate electrode element so as to define a gap between the field emission surface and the gate electrode element. The gate electrode element extends laterally between opposing anchored ends. The gate electrode element is arranged to deform away from the field emission surface in response to heat, so as to increase the gap between the field emission surface and the gate electrode element.

公开(公告)号：US20230420211A1

公开(公告)日：2023-12-28

申请号：US18252992

申请日：2021-11-16

Applicant: NCX Corporation

Inventor： Cheng QIAN

IPC: H01J9/02

CPC classification number: H01J9/025

Abstract: A method for fabricating an electron field emission cathode, the field emission cathode including a substrate having a field emission material layer engaged therewith, where the field emission material incorporates a carbon nanotube material and a metal oxide. The field emission material is produced via a sol-gel process to improve field emission characteristics of the field emission cathode and field emission cathode devices implementing such cathodes.

公开(公告)号：US20230411102A1

公开(公告)日：2023-12-21

申请号：US18247263

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Cheng QIAN

IPC: H01J9/02

CPC classification number: H01J9/025

Abstract: A method for fabricating a field emission cathode, the field emission cathode including a substrate having a field emission layer engaged therewith, where the field emission layer includes a plurality of purified carbon nanotubes. The carbon nanotubes are purified via a graphitization or annealing process.

公开(公告)号：US12020890B2

公开(公告)日：2024-06-25

申请号：US18247257

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Jian Zhang

IPC: H01J1/46 ,  H01J1/304 ,  H01J9/18

CPC classification number: H01J1/46 ,  H01J1/304 ,  H01J9/18

Abstract: A field emission cathode device and formation method involves a rotating field emission cathode including a field emission material deposited on a surface thereof, the field emission cathode rotating about an axis and being electrically connected to ground, and a planar gate electrode extending parallel to the surface of the rotating field emission cathode and defining a gap therebetween. A gate voltage source is electrically connected to the gate electrode and is arranged to interact therewith to generate an electric field, with the electric field inducing a portion of the surface of the rotating field emission cathode adjacent to the gate electrode to emit electrons from the field emission material toward and through the gate electrode.

公开(公告)号：US20230411106A1

公开(公告)日：2023-12-21

申请号：US18247265

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Jian ZHANG

IPC: H01J35/14

CPC classification number: H01J35/14

Abstract: An X-ray source device includes an anode and an electron beam cathode system arranged to emit a plurality of electron beams therefrom toward the anode. A deflector device is disposed adjacent to the electron beam cathode system to manipulate interaction of one or more of the electron beams emitted by the electron beam cathode system with the anode. An associated method of forming an X-ray source device is also provided.

公开(公告)号：US20230411104A1

公开(公告)日：2023-12-21

申请号：US18247298

申请日：2021-09-29

Applicant: NCX Corporation

Inventor： Cheng QIAN

IPC: H01J9/02 ,  H01J1/304

CPC classification number: H01J9/025 ,  H01J2201/30469 ,  H01J1/3048

Abstract: A method for fabricating an electron field emission cathode, the field emission cathode including a substrate having a field emission layer engaged therewith, where the field emission layer incorporates modified carbon nanotubes and a matrix material to improve field emission characteristics of the cathode and field emission cathode devices implementing such cathodes.

公开(公告)号：US20240234075A1

公开(公告)日：2024-07-11

申请号：US18554872

申请日：2022-04-12

Applicant: NCX Corporation

Inventor： Jian ZHANG

IPC: H01J35/06 ,  H01J9/18 ,  H01J35/04 ,  H01J35/14

CPC classification number: H01J35/065 ,  H01J9/18 ,  H01J35/045 ,  H01J35/147

Abstract: A field emission cathode device includes a cathode element having a field emission surface and an adjacent gate electrode clement defining a first gap therebetween. A gate voltage applied to the gate electrode clement causes the field emission surface to emit electrons that are accelerated through the gate electrode element. The gate electrode element is disposed between the cathode element and an anode element. the anode element having an anode voltage applied thereto to attract the electrons emitted through the gate electrode element. A tuning electrode element is disposed between the gate electrode element and the anode element. The tuning electrode element has a tuning voltage applied thereto to decelerate the electrons directed through the gate electrode element and to direct the electrons therethrough toward the anode element. An associated method of forming a field emission cathode device is also provided.