公开(公告)号：US4258283A

公开(公告)日：1981-03-24

申请号：US938333

申请日：1978-08-31

Applicant: Wilhelm Brunger ,  Gottfried Mollenstedt

Inventor： Wilhelm Brunger ,  Gottfried Mollenstedt

IPC: H01J1/16 ,  H01J19/10

CPC classification number: H01J1/16

Abstract: A cathode assembly for electron emission, comprises, a heatable support of high-temperature resistant material, an emitter body of lanthanum hexaboride, and an auxiliary body having a surface contact with both the support and the emitter body, which is made of a third material, comprising a sintered material of the class of carbides, nitrides and borides. The surface contact area between the auxiliary body and the support amounts to at least 1/6 of the surface area of the emitter body.

Abstract translation: 一种用于电子发射的阴极组件，包括耐高温材料的可加热支撑体，六硼化镧的发射体，以及与支撑体和发射体本体表面接触的辅助体，其由第三 材料，其包含碳化物，氮化物和硼化物类别的烧结材料。 辅助体和支撑体之间的表面接触面积等于发射体的表面积的至少1/6。

公开(公告)号：US4103202A

公开(公告)日：1978-07-25

申请号：US747377

申请日：1976-12-03

Applicant: Richard H. Finger ,  Thomas J. Michel

Inventor： Richard H. Finger ,  Thomas J. Michel

IPC: H01T23/00 ,  H01J1/16 ,  H01J19/10

CPC classification number: H01T23/00

Abstract: An ion projection head designed to provide a fairly uniform cloud of ions over a wide area for use in therapeutic and industrial applications, among others. The head, although being relatively small, generates a large ion cloud in a very efficient manner. A point electrode is located in a cup having a spherical internal surface of curvature. This cup causes the ions to move in a relatively common direction. An iris plate over the mouth of the cup causes the ions generated in the cup to be propelled away from the iris plate.

公开(公告)号：US3814976A

公开(公告)日：1974-06-04

申请号：US33836673

申请日：1973-03-05

Applicant: HITACHI LTD

Inventor： MITOBE K ,  ABE K

IPC: H01J29/04 ,  H01J1/15 ,  H01J1/16 ,  H01J1/18 ,  H01J19/10

CPC classification number: H01J1/16

Abstract: In a thermionic emission device for use in an electron gun assembly of a cathode ray tube, the thermionic emission device is comprised by a pair of conductive supporting members extending through an insulator substrate and a cathode member supported by the supporting members. The cathode member comprises a flat heater coated with thermion emissive substance and a pair of lead members extending in a direction perpendicular to the plane of the heater and connected between the heater and the supporting members.

Abstract translation: 在用于阴极射线管的电子枪组件的热电子发射装置中，热离子发射装置由一对延伸穿过绝缘体基底的导电支撑构件和由支撑构件支撑的阴极构件组成。 阴极构件包括涂覆有热离子发射物质的平面加热器和在垂直于加热器的平面的方向上延伸并连接在加热器和支撑构件之间的一对引线构件。

公开(公告)号：US09240301B1

公开(公告)日：2016-01-19

申请号：US13851732

申请日：2013-03-27

Applicant: Applied Physics Technologies, Inc.

Inventor： William A. Mackie ,  Gerald G. Magera

IPC: H01J1/14 ,  H01J1/146 ,  H01J19/10 ,  H01J1/148

CPC classification number: H01J1/148 ,  H01J1/14 ,  H01J1/146 ,  H01J19/10 ,  H01J37/06 ,  H01J2201/196 ,  H01J2201/2889 ,  H01J2201/30484 ,  H01J2201/317 ,  H01J2237/06316

Abstract: An electron source is made from mixed-metal carbide materials of high refractory nature. Producing field-enhanced thermionic emission, i.e., thermal-field or extended Schottky emission, from these materials entails the use of a certain low work function crystallographic direction, such as, for example, (100), (210), and (310). These materials do not naturally facet because of their refractory nature. The disclosed electron source made from transition metal carbide material is especially useful when installed in a scanning electron microscope (SEM) performing advanced imaging applications that require a high brightness, high beam current source.

Abstract translation: 电子源由具有高耐火性质的混合金属碳化物材料制成。 从这些材料产生场强增强的热离子发射，即热场或延伸的肖特基发射需要使用某种低功函数的晶体学方向，例如（100），（210）和（310） 。 这些材料由于其耐火性质而不自然而然。 所披露的由过渡金属碳化物材料制成的电子源在安装在需要高亮度，远光束电流源的先进成像应用的扫描电子显微镜（SEM）中是特别有用的。

公开(公告)号：US06873095B1

公开(公告)日：2005-03-29

申请号：US10031838

申请日：2000-07-28

Applicant: Jan Kjellman ,  Magnus Lindmark

Inventor： Jan Kjellman ,  Magnus Lindmark

IPC: H01J1/304 ,  H01J63/06 ,  H01J1/16 ,  H01J19/10

CPC classification number: B82Y10/00 ,  H01J1/3048 ,  H01J63/06 ,  H01J2201/30469 ,  Y10S977/95

Abstract: The light source, comprises an evacuated container having walls, including an outer glass layer (23) which on at least part thereof is coated on the inside with a layer of phosphor (24) forming a luminescent layer and a conductive layer (25) forming an anode. The phosphor (24) is excited to luminescence by electron bombardment from a field emission cathode (40) located in the interior of the container. The field emission cathode (40) comprises a carrier having a diameter in the mm range. At least a portion of the surface of the carrier is provided with a conductive layer having surface irregularities in the form of tips, having a radial extension being less than about 10 μm. Due to the geometry and the tips, the electric field is concentrated and amplified at the field emission surface.

Abstract translation: 光源包括具有壁的真空容器，包括外玻璃层（23），其至少部分地在内部涂覆有形成发光层的磷光体层（25）和形成发光层的导电层（25），外层玻璃层 阳极。 荧光体（24）通过从位于容器内部的场致发射阴极（40）进行电子轰击被激发成发光。 场致发射阴极（40）包括直径在mm范围内的载体。 载体表面的至少一部分设置有导电层，导电层具有尖端形式的表面凹凸，其径向延伸小于约10微米。 由于几何形状和尖端，电场被集中并在场发射表面放大。

公开(公告)号：US5831378A

公开(公告)日：1998-11-03

申请号：US918766

申请日：1997-08-25

Applicant: J. Brett Rolfson ,  Kevin Tjaden

Inventor： J. Brett Rolfson ,  Kevin Tjaden

IPC: H01J9/02 ,  H01L21/3105 ,  H01J1/16 ,  H01J1/02 ,  H01J1/62 ,  H01J19/10

CPC classification number: H01L21/31053 ,  H01J9/025 ,  H01J2201/30426 ,  H01J2201/319 ,  H01J2209/0226

Abstract: A field emitter display having reduced surface leakage comprising at least one emitter tip surrounded by a dielectric region. The dielectric region is formed of a composite of insulative layers, at least one of which has fins extending toward the emitter tip. A conductive gate, for extracting electrons from the emitter tip, is disposed superjacent the dielectric region. The fins increase the length of the path that leaked electrical charge travels before impacting the gate.

Abstract translation: 具有减小的表面泄漏的场发射器显示器包括由电介质区域包围的至少一个发射极尖端。 电介质区域由绝缘层的复合体形成，其中至少一个具有朝向发射极尖端延伸的翅片。 用于从发射极尖端提取电子的导电栅极设置在电介质区域的上方。 在撞击门之前，翅片增加了泄漏电荷行进路径的长度。

公开(公告)号：US4683397A

公开(公告)日：1987-07-28

申请号：US852010

申请日：1986-04-14

Applicant: Pierce Johnson, Jr.

Inventor： Pierce Johnson, Jr.

IPC: H01K1/14 ,  H01J1/16 ,  H01J19/10

CPC classification number: H01K1/14

Abstract: This invention provides an improved compact fine wire incandescent lamp filament and method for making such having a primary mandrel ratio in the range of about 1.40 to about 4.00 and a secondary mandrel ratio which is greater than or equal to the primary mandrel ratio. The improved filament design exhibits an increase in compactness and retains or increases structural rigidity while exhibiting minimal sag when the filament is incorporated into an incandescent lamp of the tungsten halogen type variety. The compact coiling method is particularly useful in designing compact filaments for high voltage applications where it is desirable to eliminate the use of rectifying means to lower the effective voltage across the filament.

Abstract translation: 本发明提供了一种改进的紧凑型细丝白炽灯灯丝及其制造方法，其主芯轴比在约1.40至约4.00范围内，次级心轴比大于或等于主芯轴比。 改进的长丝设计表现出紧凑性的增加并且保持或增加结构刚度，同时当灯丝被并入钨卤素型的白炽灯时显示最小的下垂。 紧凑型卷绕方法在设计用于高电压应用的紧凑型灯丝时特别有用，其中期望消除使用整流装置来降低灯丝上的有效电压。

公开(公告)号：US4596942A

公开(公告)日：1986-06-24

申请号：US579950

申请日：1984-02-14

Applicant: Chuhei Oshima ,  Yoshio Ishizawa

Inventor： Chuhei Oshima ,  Yoshio Ishizawa

IPC: H01J37/073 ,  H01J1/16 ,  H01J1/22 ,  H01J3/02 ,  H01J19/10

CPC classification number: H01J37/073

Abstract: A field emission type electron gun comprises a cathode, a plurality of anodes opposing in series to the cathode and a filament for heating the anodes, all being contained in a vacuum tube. The filament is placed immediately before a first anode directly opposing the cathode in a symmetrical manner so as to serve both as a gas expelling member and as an anode.

Abstract translation: 场发射型电子枪包括阴极，与阴极串联的多个阳极和用于加热阳极的灯，全部被包含在真空管中。 灯丝立即放置在直接与阴极对置的第一阳极之前，以对称的方式放置，以便同时用作气体排出构件和阳极。

公开(公告)号：US4591754A

公开(公告)日：1986-05-27

申请号：US724948

申请日：1985-04-22

Applicant: Hirotoshi Hagiwara ,  Hideo Hiraoka ,  Masaji Ishii

Inventor： Hirotoshi Hagiwara ,  Hideo Hiraoka ,  Masaji Ishii

IPC: H01J37/06 ,  H01J1/16 ,  H01J1/304 ,  H01J3/02 ,  H01J37/073 ,  H01J19/10

CPC classification number: H01J1/304 ,  H01J37/073

Abstract: An electron gun for high brightness including a LaB.sub.6 single crystal cathode having a (100) plane on at least part of a main electron beam emission surface of a cathode tip having a top and a Wehnelt having a tapered surface defining an interior angle similar to or greater than a vertical angle of said cathode tip.

Abstract translation: 一种用于高亮度的电子枪，包括在具有顶部的阴极尖端的主电子束发射表面的至少一部分上具有（100）面的LaB6单晶阴极，并且具有限定与 大于所述阴极尖端的垂直角度。

公开(公告)号：US4486684A

公开(公告)日：1984-12-04

申请号：US267319

申请日：1981-05-26

Applicant: Fritz-Jurgen Hohn

Inventor： Fritz-Jurgen Hohn

IPC: H01J37/06 ,  H01J1/14 ,  H01J1/16 ,  H01J1/20 ,  H01J19/10

CPC classification number: H01J1/16

Abstract: I have discovered that an electron beam emitted from an LaB.sub.6 single crystal cathode has higher brightness when a significant portion of the actual emitting surface of the LaB.sub.6 crystal comprises flat surfaces oblique to the electron beam axis and when these flat surfaces expose relatively low work function crystal planes. I have defined as a relatively low work function crystal plane those crystal planes having a lower work function than the average work function for sintered LaB.sub.6. My preferred geometry for a single crystal LaB.sub.6 electron emitting tip is a pyramid oriented such that the apex points in the electron beam emission direction and preferably also points in a direction perpendicular to a relatively low work function crystal plane. The pyramidal tip may have three, four, or more flat sides, all of which contribute electrons to the beam, from at least an area in the vicinity of the apex. The apex of the pyramid may be rounded or flat. Relatively low work function crystal planes include the (100), (110), (111), (210), (321), and (311) crystal planes, but additional relatively low work function crystal planes which have not yet been tested probably exist. In general, the brightness of any single crystal LaB.sub.6 cathode may be improved by facetting the emitting tip with flat surfaces so as to expose relatively low work function crystal planes. However, highest brightnesses occur when the emitted electron beam is perpendicular to and the flat surfaces expose the lowest work function crystal planes.

Abstract translation: 我发现，当LaB6晶体的实际发射表面的大部分包含与电子束轴倾斜的平坦表面时，当LaB6单晶阴极发射的电子束具有更高的亮度，并且当这些平坦表面暴露相对较低的功函数晶体 飞机 作为相对较低的功函数晶体平面，这些晶面的功函数低于烧结LaB6的平均功函数。 单晶LaB6电子发射尖端的优选几何形状是金字塔取向，使得顶点指向电子束发射方向，并且优选地也指向垂直于较低功函数晶面的方向。 金字塔形尖端可以具有三个，四个或更多个平坦侧面，所有这些侧面从顶点附近的至少一个区域向梁提供电子。 金字塔的顶点可以是圆形或平坦的。 相对较低的功函数晶面包括（100），（110），（111），（210），（321）和（311）晶面，但还没有被测试的额外的相对较低的功函数晶面 存在。 通常，任何单晶LaB6阴极的亮度可以通过用平坦表面平展发光尖端来提高，以便暴露相对较低的功函数晶面。 然而，当发射的电子束垂直于平面并暴露最低功函晶面时，出现最高亮度。