公开(公告)号：US12057285B2

公开(公告)日：2024-08-06

申请号：US18388122

申请日：2023-11-08

Applicant: Kimball Physics, Inc.

Inventor： George Douglas Calvey

IPC: H01J1/15 ,  H01J1/148 ,  H01J9/04

CPC classification number: H01J1/15 ,  H01J1/148 ,  H01J9/04

Abstract: A cathode device including an emitter element for generating electrons. The emitter element can have an outer periphery and a distal tip. The tip can have a first angled surface that angles inwardly from the outer periphery, and a second angled surface that angles inwardly and is separated and inwardly offset from the first angled surface by a shoulder. A graphite cap which can be solid, extends around the emitter element and has an internal angled surface that engages the first angled surface of the tip of the emitter element, forming a gap of a controlled size separating the internal angled surface of the graphite cap from the second angled surface of the tip of the emitter element.

公开(公告)号：US20100187096A1

公开(公告)日：2010-07-29

申请号：US12691437

申请日：2010-01-21

Applicant: Naofumi Aoki ,  Tamaki Kobayashi

Inventor： Naofumi Aoki ,  Tamaki Kobayashi

IPC: C23C14/34

CPC classification number: C23C14/067 ,  C23C14/35 ,  C23C14/54 ,  H01J1/148 ,  H01J9/042 ,  H01J9/148

Abstract: A lanthanum boride film is deposited on a substrate by means of a sputtering method while moving the substrate and a target of lanthanum boride relative to each other in a state where the substrate and the target are arranged in opposition to each other. When a mean free path of sputtering gas molecules at the time of deposition is λ (mm) and a distance between the substrate and the target is L (mm), a ratio of L/λ is set to a value equal to or larger than 20. A value which is obtained by dividing a discharge power value by an area of the target is set to be in a range of from 1 W/cm2 or more to 5 W/cm2 or less.

Abstract translation: 在基板和靶相对配置的状态下，通过溅射法在基板上沉积硼硅酸钡膜，同时相对于彼此移动基板和硼化镧靶。 当沉积时溅射气体分子的平均自由程为λ（mm），基板与目标之间的距离为L（mm）时，将L /λ的比设定为等于或大于 通过将放电功率值除以目标的面积而获得的值设定为1W / cm 2以上至5W / cm 2以下的范围。

公开(公告)号：US20090284124A1

公开(公告)日：2009-11-19

申请号：US12427865

申请日：2009-04-22

Applicant: WOLFGANG KUTSCHERA ,  EBERHARD LENZ ,  ERNST NEUMEIER

Inventor： WOLFGANG KUTSCHERA ,  EBERHARD LENZ ,  ERNST NEUMEIER

IPC: H01J1/14

CPC classification number: H01J1/14 ,  H01J1/144 ,  H01J1/146 ,  H01J1/148 ,  H01J35/06 ,  H01J35/305

Abstract: A cathode has a thermionic emitter composed of a material that emits electrons upon being heated, and an emission layer, composed of a material that has a lower electron work function than the material of the thermionic emitter, is applied on said thermionic emitter so as to at least partially cover the thermionic emitter. Such a cathode has a high electron emission with simultaneously improved focusing and a longer lifespan.

Abstract translation: 阴极具有由在加热时发射电子的材料构成的热离子发射体，并且将由具有比热电子发射体的材料更低的电子功函数的材料构成的发射层施加到所述热离子发射极上，以便 至少部分地覆盖热离子发射器。 这种阴极具有高电子发射，同时改善了聚焦并且寿命更长。

公开(公告)号：US07176610B2

公开(公告)日：2007-02-13

申请号：US10774693

申请日：2004-02-10

Applicant: Victor Katsap

Inventor： Victor Katsap

IPC: H01J19/06

CPC classification number: H01J9/042 ,  H01J1/148 ,  H01J1/15 ,  H01J2201/19 ,  H01J2237/06308

Abstract: An improved thermionic cathode is provided. The cathode has a carbon-coated cone surface and reduced cone angle (e.g. typically 60 degrees or less) that delivers an electron beam with high angular intensity and brightness and exhibits increased longevity.

Abstract translation: 提供了一种改进的热离子阴极。 阴极具有碳涂覆的锥形表面和减小的锥角（例如通常为60度或更小），其传送具有高角度强度和亮度的电子束，并且延长寿命。

公开(公告)号：US20050174030A1

公开(公告)日：2005-08-11

申请号：US10774693

申请日：2004-02-10

Applicant: Victor Katsap

Inventor： Victor Katsap

IPC: H01J1/14 ,  H01J1/148 ,  H01J1/15 ,  H01J1/16 ,  H01J9/04 ,  H01J37/06 ,  H01J19/06

CPC classification number: H01J9/042 ,  H01J1/148 ,  H01J1/15 ,  H01J2201/19 ,  H01J2237/06308

Abstract: An improved thermionic cathode is provided. The cathode has a carbon-coated cone surface and reduced cone angle (e.g. typically 60 degrees or less) that delivers an electron beam with high angular intensity and brightness and exhibits increased longevity.

Abstract translation: 提供了一种改进的热离子阴极。 阴极具有碳涂覆的锥形表面和减小的锥角（例如通常为60度或更小），其传送具有高角度强度和亮度的电子束，并且延长寿命。

公开(公告)号：US6051165A

公开(公告)日：2000-04-18

申请号：US258990

申请日：1999-02-26

Applicant: Garth W. Billings

Inventor： Garth W. Billings

IPC: H01B1/06 ,  H01J1/14 ,  H01J1/142 ,  H01J1/144 ,  H01J1/148 ,  H01J1/304 ,  H01B1/02 ,  H01J1/00 ,  H01J1/02

CPC classification number: B82Y10/00 ,  H01B1/06 ,  H01J1/14 ,  H01J1/142 ,  H01J1/144 ,  H01J1/148 ,  H01J1/304 ,  H01J2201/19

Abstract: Electron emission materials consisting of carbides, borides, and oxides, and related mixtures and compounds, of Group IVB metals Hf, Zr, and Ti, Group IIA metals Be, Mg, Ca, Sr, and Ba, and Group IIIB metals Sc, Y, and lanthanides La through Lu are used in electrodes. The electron emission materials include ternary Group IVB-IIIB and IVB-IIA oxides. These electron emission materials are typically contained in a refractory metal matrix formed of tungsten, tantalum, rhenium, and their alloys, but may also be used by themselves. These materials and electrodes have high melting points, low vapor pressures, low work functions, high electrical and thermal conductivity, and high thermionic electron emission and field emission properties.

Abstract translation: 由ⅣB族金属Hf，Zr和Ti，IIA族金属Be，Mg，Ca，Sr和Ba以及IIIB族金属组成的由碳化物，硼化物和氧化物组成的电子发射材料及相关混合物和化合物Sc，Y ，镧系元素La-Lu用于电极。 电子发射材料包括IVB-IIIB族和IVB-IIA族三元氧化物。 这些电子发射材料通常包含在由钨，钽，铼及其合金形成的难熔金属基体中，但也可以自己使用。 这些材料和电极具有高熔点，低蒸汽压力，低功函数，高导热性和高热电子发射和场发射性能。

公开(公告)号：US6027670A

公开(公告)日：2000-02-22

申请号：US105204

申请日：1998-06-26

Applicant: Shigeki Otani ,  Ryutaro Soda ,  Yoshio Ishizawa

Inventor： Shigeki Otani ,  Ryutaro Soda ,  Yoshio Ishizawa

IPC: C01B35/04 ,  H01J1/14 ,  H01J1/148 ,  H01J37/06 ,  H01B1/06 ,  H01J1/05

CPC classification number: H01J1/148

Abstract: A rare earth hexaboride electron-emitting material of the formula ReB.sub.6+x, wherein Re is La, Ce or (La+Ce), and 0.05.ltoreq.x.ltoreq.0.20.

Abstract translation: 式ReB6 + x的稀土六硼化物电子发射材料，其中Re为La，Ce或（La + Ce），0.05≤x≤0.20。

公开(公告)号：US5837165A

公开(公告)日：1998-11-17

申请号：US707071

申请日：1996-09-03

Applicant: Shigeki Otani ,  Ryutaro Soda ,  Yoshio Ishizawa

Inventor： Shigeki Otani ,  Ryutaro Soda ,  Yoshio Ishizawa

IPC: C01B35/04 ,  H01J1/14 ,  H01J1/148 ,  H01J37/06 ,  H01B1/06

CPC classification number: H01J1/148

Abstract: A rare earth hexaboride electron-emitting material of the formula ReB.sub.6+x, wherein Re is La, Ce or (La+Ce) and 0.05.ltoreq.x.ltoreq.0.20.

Abstract translation: 式ReB6 + x的稀土六硼化物电子发射材料，其中Re为La，Ce或（La + Ce）和0.05

公开(公告)号：US3932314A

公开(公告)日：1976-01-13

申请号：US503471

申请日：1974-09-05

Applicant: Ushio Kawabe ,  Shigehiko Yamamoto ,  Toshiyuki Aita ,  Yukio Honda

Inventor： Ushio Kawabe ,  Shigehiko Yamamoto ,  Toshiyuki Aita ,  Yukio Honda

IPC: H01J1/30 ,  C01B35/04 ,  C04B35/58 ,  H01J1/14 ,  H01J1/148 ,  H01J1/304 ,  H01B1/06

CPC classification number: H01J1/148 ,  H01J1/304

Abstract: An electron emissive material of the formula (Y.sub.1.sub.-x EU.sub.x)B.sub.6 having the calcium hexaboride type crystal structure can easily produce hexaborides of the single phase. These borides have a number of merits such as small work function, high mechanical properties and low vapor pressure, and they are far more excellent than prior-art materials when used in a thermionic emission cathode and a field emission type cold cathode.

Abstract translation: 具有六硼化钙型晶体结构的式（Y1-xEUx）B6的电子发射材料可以容易地生产单相六硼化物。 这些硼化物具有功函数小，机械性能好，蒸气压低的优点，而且当用于热电子发射阴极和场致发射型冷阴极时，它们比现有技术的材料要好得多。

公开(公告)号：US3532923A

公开(公告)日：1970-10-06

申请号：US3532923D

申请日：1969-03-17

Applicant: IBM

Inventor： VOGEL SIEGFRIED F

IPC: H01J1/148 ,  H01J1/15 ,  H01J19/08

CPC classification number: H01J1/148 ,  H01J1/15