公开(公告)号：US20120153807A1

公开(公告)日：2012-06-21

申请号：US13404923

申请日：2012-02-24

Applicant: Shigeo Mikoshiba ,  Satoru Watanabe ,  Kazuhiro Ito ,  Naomichi Miyakawa ,  Setsuro Ito ,  Kei Maeda ,  Yutaka Kuroiwa

Inventor： Shigeo Mikoshiba ,  Satoru Watanabe ,  Kazuhiro Ito ,  Naomichi Miyakawa ,  Setsuro Ito ,  Kei Maeda ,  Yutaka Kuroiwa

IPC: H01J61/06 ,  H01J1/142 ,  H01J9/02

CPC classification number: H01J9/042 ,  H01J61/0677

Abstract: An electrode for a fluorescent lamp includes a filament and an emitter provided on the filament. The emitter includes a mayenite compound.

Abstract translation: 用于荧光灯的电极包括设置在灯丝上的灯丝和发射器。 发射体包括钙铝石化合物。

公开(公告)号：US20050140262A1

公开(公告)日：2005-06-30

申请号：US10498045

申请日：2002-11-29

Applicant: Jean-Luc Ricaud ,  Jean-Michel Roquais

Inventor： Jean-Luc Ricaud ,  Jean-Michel Roquais

IPC: H01J1/28 ,  H01J29/04 ,  H01J1/142

CPC classification number: H01J1/28

Abstract: Impregnated cathode for a vacuum tube comprising an emissive part in the form of a porous pellet impregnated with a compound of alkaline earth metals; the pellet is placed in a dish made of a refractory material and covered with a porous metal foil forming the emissive surface of the cathode. Moreover, the pellet has a separation surface between a heavily impregnated zone and a zone which is not impregnated or weakly impregnated so that the said separation surface comprises at least a hollow part facing the emissive surface. By virtue of the shape of this separation surface, the lifetime of the cathode is improved.

Abstract translation: 一种用于真空管的浸渍阴极，包括浸渍有碱土金属化合物的多孔颗粒形式的发射部分; 将颗粒放置在由耐火材料制成的盘中并用形成阴极的发射表面的多孔金属箔覆盖。 此外，颗粒在重浸渍区域和未浸渍或弱浸渍的区域之间具有分离表面，使得所述分离表面至少包括面向发射表面的中空部分。 由于该分离面的形状，阴极的寿命得到改善。

公开(公告)号：US20050007004A1

公开(公告)日：2005-01-13

申请号：US10882226

申请日：2004-07-02

Applicant: Gyeong Sang Lee ,  Young Ho Park

Inventor： Gyeong Sang Lee ,  Young Ho Park

IPC: H01J29/04 ,  H01J1/142 ,  H01J1/20 ,  H01J19/14

CPC classification number: H01J1/20 ,  H01J1/142

Abstract: A cathode for a cathode ray tube with an improved emissivity of electrons is provided. The cathode includes a base metal and an electron emitting material layer containing an alkline earth metal oxide having barium, wherein the base metal has nickel as a main ingredient and contains a reducing metal with a high diffusion speed and a reducing metal with a low diffusion speed; and the electron emitting material layer comprises activating metal(s).

Abstract translation: 提供了具有改善的电子发射率的用于阴极射线管的阴极。 阴极包括贱金属和含有具有钡的碱土金属氧化物的电子发射材料层，其中贱金属以镍为主要成分，并含有高扩散速度的还原金属和低扩散速度的还原金属 ; 并且电子发射材料层包括活化金属。

公开(公告)号：US6054802A

公开(公告)日：2000-04-25

申请号：US29032

申请日：1998-02-20

Applicant: Takuya Ohira ,  Masato Saito ,  Hiroyuki Teramoto

Inventor： Takuya Ohira ,  Masato Saito ,  Hiroyuki Teramoto

IPC: H01J1/142 ,  H01J1/26 ,  H01J1/00

CPC classification number: H01J1/142 ,  H01J1/26

Abstract: Problems with a conventional cathode for electronic tubes arose because metals composing the substrate were subjected to heat deformation, resulting in a relatively lage drift of cutoff voltage. The present invention diminishes the heat deformation of the substrate to obtain a cathode with a small drift of cutoff voltage. Particularly, heat expansion coefficients can be made uniform while metals in the metal layer are prevented from diffusing into the substrate. This is done by incorporating the same metals present in the metal layer into the metals composing the substrate, thereby supressing deformation of the substrate.

Abstract translation: PCT No.PCT / JP97 / 01976 Sec。 371日期：1998年2月20日 102（e）1998年2月20日PCT 1997年6月10日PCT公布。 公开号WO97 / 49108 PCT。 日期1997年12月24日由于构成基板的金属受到热变形，导致电子管的常规阴极的问题，导致截止电压相对较大的漂移。 本发明减小了基板的热变形以获得具有小的截止电压漂移的阴极。 特别地，可以使热膨胀系数均匀，防止金属层中的金属扩散到基板中。 这通过将金属层中存在的相同金属掺入构成基板的金属中，从而抑制基板的变形。

公开(公告)号：US5959395A

公开(公告)日：1999-09-28

申请号：US727619

申请日：1996-10-18

Applicant: Hiroshi Sakurai ,  Yoshiki Hayashida ,  Masayuki Kubo ,  Katsuyuki Yamashita

Inventor： Hiroshi Sakurai ,  Yoshiki Hayashida ,  Masayuki Kubo ,  Katsuyuki Yamashita

IPC: H01J1/142 ,  H01J1/14 ,  H01J1/20 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/142

Abstract: A cathode for an electron tube formed by coating the base of the cathode for the electron tube with an alkaline-earth metal carbonate containing at least barium as the alkaline-earth metal, and thermally decomposing in a vacuum to generate an emitter mainly comprising an alkaline-earth metal oxide, wherein a mixture of two or more kinds of alkaline-earth metal carbonate crystalline particles having different shapes is used as the above mentioned alkaline-earth metal carbonate. Since the present invention can provide a cathode for electron tube having improved both cut-off drift and emission characteristic at the same time, it is useful as a cathode for the electron gun of a CRT, or a cathode for the electron gun of an electron microscope.

Abstract translation: PCT No.PCT / JP96 / 00493 Sec。 371日期：1996年10月18日 102（e）日期1996年10月18日PCT 1996年2月29日PCT PCT。 第WO97 / 32330号公报 日期1997年9月4日为电子管的阴极，通过用至少含有钡的碱土金属碳酸盐作为碱土金属涂布电子管的阴极的基底而形成，并且在真空中热分解以产生 主要包含碱土金属氧化物的发射体，其中使用两种或更多种具有不同形状的碱土金属碳酸盐结晶颗粒的混合物作为上述碱土金属碳酸盐。 由于本发明可以提供同时具有改进的截止漂移和发射特性的电子管阴极，因此可用作CRT的电子枪的阴极或用于电子的电子枪的阴极 显微镜。

公开(公告)号：US5698937A

公开(公告)日：1997-12-16

申请号：US393534

申请日：1995-02-23

Applicant: Gyu-nam Ju ,  Jong-seo Choi ,  Keun-bae Kim ,  Kwang-min Lee ,  Kwi-seok Choi

Inventor： Gyu-nam Ju ,  Jong-seo Choi ,  Keun-bae Kim ,  Kwang-min Lee ,  Kwi-seok Choi

IPC: H01J1/14 ,  H01J1/142 ,  H01J1/20 ,  H01J1/28 ,  H01J1/13

CPC classification number: H01J1/142

Abstract: A cathode for an electron tube has a layer of electron-emissive substance containing alkaline earth metal carbonates having capillary crystals, to which 0.01-20.0 wt % of both a lanthanum (La) compound and a magnesium (Mg) compound or an La--Mg compound, based upon the weight of the alkaline earth metal carbonate, is added. The cathode enjoys full interchangeability with a conventional oxide cathode and a 15-20% longer lifetime.

Abstract translation: 用于电子管的阴极具有含有具有毛细晶体的碱土金属碳酸酯的电子发射物质层，镧（La）化合物和镁（Mg）化合物或La-Mg两者的0.01-20.0重量％ 加入基于碱土金属碳酸盐的重量的化合物。 阴极与常规氧化物阴极完全互换，寿命长达15-20％。

公开(公告)号：US5059856A

公开(公告)日：1991-10-22

申请号：US439994

申请日：1989-11-21

Applicant: Petrus J. A. M. Derks

Inventor： Petrus J. A. M. Derks

IPC: H01J1/14 ,  H01J1/142 ,  H01J1/20

CPC classification number: H01J1/142

Abstract: The lifetime of oxide cathodes comprising, for example BaO and SrO as an emissive material, is improved by adding hafnium oxide or zirconium oxide.

公开(公告)号：US4904896A

公开(公告)日：1990-02-27

申请号：US675226

申请日：1984-11-27

Applicant: Kenneth K. T. Chiang

Inventor： Kenneth K. T. Chiang

IPC: H01J1/14 ,  H01J1/142 ,  H01J1/26

CPC classification number: H01J1/26 ,  H01J1/142

Abstract: In a vacuum electron tube, a novel oxide cathode comprising a metal substrate, means for heating said substrate to its operating temperature, and a layer of alkaline-earth-metal oxide on the substrate. The substrate is essentially free from silicon and contains operative concentrations greater than 1.0 weight % of chromium metal for progressively migrating into the oxide layer and reducing the oxide to yield alkaline-earth-metal.

Abstract translation: 在真空电子管中，包括金属基板的新型氧化物阴极，用于将基板加热至其工作温度的装置和基底上的碱土金属氧化物层。 基材基本上不含硅，并且含有大于1.0重量％的铬金属的操作浓度，用于逐渐迁移到氧化物层中并还原氧化物以产生碱土金属。

公开(公告)号：US2916652A

公开(公告)日：1959-12-08

申请号：US48625855

申请日：1955-02-04

Applicant: RAYTHEON CO

Inventor： JAMES CARDELL ,  HILL FREDERICK T

IPC: H01J1/142

CPC classification number: H01J1/142

公开(公告)号：US2830027A

公开(公告)日：1958-04-08

申请号：US54815555

申请日：1955-11-21

Applicant: CSF

Inventor： JEAN SCHWEITZER

IPC: H01J1/142

CPC classification number: H01J1/142