公开(公告)号：US3303372A

公开(公告)日：1967-02-07

申请号：US39082864

申请日：1964-08-20

Applicant: DUNLEE CORP

Inventor： GAGER ROBERT M

IPC: H01J35/14

CPC classification number: H01J35/14 ,  H01J2201/30

公开(公告)号：US08212465B2

公开(公告)日：2012-07-03

申请号：US12576397

申请日：2009-10-09

Applicant: Jin Woo Jeong ,  Yoon Ho Song

Inventor： Jin Woo Jeong ,  Yoon Ho Song

IPC: H01J1/62

CPC classification number: H01J1/30 ,  H01J1/304 ,  H01J2201/30 ,  H01J2201/304

Abstract: Provided is a field emission device. The field emission device includes an insulated cathode substrate facing an anode substrate, a plurality of cathodes arranged on the cathode substrate and separated from each other, and an emitter formed on each of the cathodes. In order to prevent accumulation of charges on an exposed area of the cathode substrate between the cathodes due to electrons discharged from the emitter, the distance between the cathodes is equal to or smaller than a first threshold value, and the distance from the emitter to the end of the cathode is equal to or greater than a second threshold value. Accordingly, in the field emission device in which a plurality of cathodes are separated from each other on the same plane, it is possible to prevent abnormal field emission and arc generation due to accumulated charges between the cathodes, thereby performing stable operation.

Abstract translation: 提供场致发射装置。 场发射器件包括面对阳极衬底的绝缘阴极衬底，布置在阴极衬底上并彼此分离的多个阴极以及形成在每个阴极上的发射极。 为了防止由于从发射极排出的电子而在阴极的阴极基板的露出区域上积累电荷，阴极之间的距离等于或小于第一阈值，并且从发射极到 阴极的端部等于或大于第二阈值。 因此，在多个阴极在同一平面上彼此分离的场发射器件中，可以防止由于阴极之间的累积电荷引起的异常场发射和电弧产生，从而进行稳定的操作。

公开(公告)号：US20100133980A1

公开(公告)日：2010-06-03

申请号：US12576397

申请日：2009-10-09

Applicant: Jin Woo JEONG ,  Yoon Ho Song

Inventor： Jin Woo JEONG ,  Yoon Ho Song

IPC: H01J1/02

CPC classification number: H01J1/30 ,  H01J1/304 ,  H01J2201/30 ,  H01J2201/304

Abstract: Provided is a field emission device. The field emission device includes an insulated cathode substrate facing an anode substrate, a plurality of cathodes arranged on the cathode substrate and separated from each other, and an emitter formed on each of the cathodes. In order to prevent accumulation of charges on an exposed area of the cathode substrate between the cathodes due to electrons discharged from the emitter, the distance between the cathodes is equal to or smaller than a first threshold value, and the distance from the emitter to the end of the cathode is equal to or greater than a second threshold value. Accordingly, in the field emission device in which a plurality of cathodes are separated from each other on the same plane, it is possible to prevent abnormal field emission and arc generation due to accumulated charges between the cathodes, thereby performing stable operation.

Abstract translation: 提供场致发射装置。 场发射器件包括面对阳极衬底的绝缘阴极衬底，布置在阴极衬底上并彼此分离的多个阴极以及形成在每个阴极上的发射极。 为了防止由于从发射极排出的电子而在阴极的阴极基板的露出区域上积累电荷，阴极之间的距离等于或小于第一阈值，并且从发射极到 阴极的端部等于或大于第二阈值。 因此，在多个阴极在同一平面上彼此分离的场发射器件中，可以防止由于阴极之间的累积电荷引起的异常场发射和电弧产生，从而进行稳定的操作。

公开(公告)号：US06809465B2

公开(公告)日：2004-10-26

申请号：US10350614

申请日：2003-01-24

Applicant: Sungho Jin

Inventor： Sungho Jin

IPC: H01J102

CPC classification number: B82Y10/00 ,  H01J3/028 ,  H01J35/065 ,  H01J2201/30 ,  H01J2329/00 ,  Y10S977/939

Abstract: In accordance with the invention, an electron beam source for exposing selected portions of a surface to electrons comprises a plurality of nanoscale electron emitters and, associated with each electron emitter, a directional control element to direct the emitter toward a selected portion of the surface. In a preferred embodiment, the emitters are nanotubes or nanowires mounted on electrostatically controlled MEMS directional control elements. An alternative embodiment uses electrode directional control elements.

Abstract translation: 根据本发明，用于将表面的选定部分暴露于电子的电子束源包括多个纳米级电子发射器，并且与每个电子发射器相关联，定向控制元件将发射极引向表面的选定部分。 在优选实施例中，发射器是安装在静电控制MEMS方向控制元件上的纳米管或纳米线。 替代实施例使用电极方向控制元件。

公开(公告)号：US06385292B1

公开(公告)日：2002-05-07

申请号：US09751110

申请日：2000-12-29

Applicant: Bruce M. Dunham ,  John Scott Price ,  Colin R. Wilson ,  Douglas Snyder

Inventor： Bruce M. Dunham ,  John Scott Price ,  Colin R. Wilson ,  Douglas Snyder

IPC: H01J3500

CPC classification number: A61B6/032 ,  A61B6/4488 ,  H01J35/06 ,  H01J35/08 ,  H01J2201/30 ,  H01J2235/1204 ,  H01J2235/186

Abstract: A solid state x-ray source (14) for a computed tomograph (CT) imaging system (10) is presented. X-ray source (14) has a cathode (58) which is preferably formed of a plurality of addressable elements. The cathode is positioned within a vacuum chamber (74) so that electrodes emitted thereby impinge upon anode (68) spaced apart from cathode (58). An electron beam (82) is formed and moved along the length of cathode (58). The anode (68) is disposed within a cooling block portion (58) and operatively adjacent to an x-ray transmissive window (66). The anode (68) and x-ray transmissive window (66) are disposed within an elongated channel (64) of the cooling block portion (56).

Abstract translation: 提出了一种用于计算机断层摄影（CT）成像系统（10）的固态x射线源（14）。 X射线源（14）具有阴极（58），阴极（58）优选地由多个可寻址元件形成。 阴极位于真空室（74）内，使得由此发射的电极撞击与阴极（58）间隔开的阳极（68）。 沿着阴极（58）的长度形成并移动电子束（82）。 阳极（68）设置在冷却块部分（58）内并且可操作地邻近X射线透射窗（66）。 阳极（68）和x射线透射窗（66）设置在冷却块部分（56）的细长通道（64）内。