公开(公告)号：EP1367620A1

公开(公告)日：2003-12-03

申请号：EP03101521.7

申请日：2003-05-26

Applicant: Thomson Licensing S.A.

Inventor： Pruvost, Jean-Claude ,  Langot, Jérémy ,  Adamski, Jean-Rémy

IPC: H01J1/28

CPC classification number: H01J1/28 ,  H01J9/047

Abstract: Body (1) formed from a porous matrix impregnated with an electron-emitting material, defined by external faces (11, 12, 13) that all have a roughness of less than 0.2 µm.
Because of this surface finish, the operation and the lifetime of the cathodes provided with such cathode emissive bodies are substantially improved.

Abstract translation: 主体（1）由浸渍有电子发射材料的多孔基体形成，由外表面（11,12,13）限定，其全部具有小于0.2μm的粗糙度。 由于这种表面光洁度，所以提供了这种阴极发射体的阴极的操作和使用寿命大为改善。

公开(公告)号：EP0720198B1

公开(公告)日：1999-06-09

申请号：EP95309471.1

申请日：1995-12-27

Applicant: SAMSUNG DISPLAY DEVICES CO., LTD.

Inventor： Chang-seob, Kim ,  Seok-bong, Son ,  Sang-kyun, Kim ,  Bong-uk,Jeong

IPC: H01J1/15 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J2201/281

公开(公告)号：EP0720198A1

公开(公告)日：1996-07-03

申请号：EP95309471.1

申请日：1995-12-27

Applicant: SAMSUNG DISPLAY DEVICES CO., LTD.

Inventor： Chang-seob, Kim ,  Seok-bong, Son ,  Sang-kyun, Kim ,  Bong-uk,Jeong

IPC: H01J1/15 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J2201/281

Abstract: A directly heated cathode structure includes a porous pellet (500) in which cathode material is impregnated, a first metal member (510) being fixed to the lower surface of the porous pellet (500), a second metal member (520) being welded with the first metal member (510), and a filament (600) being interposed between the first and second metal members. A method for manufacturing a directly heated cathode structure includes the steps of manufacturing a porous pellet (500) having a multiplicity of cavities, welding a first metal member (510) to the lower surface of the porous pellet by a brazing layer (700), impregnating electron radiating material (600) into the cavities of the pellet, and welding a second metal member (520) to the first metal member (510) so that a filament (600) is disposed between the first and second metal members. Life of the cathode structure is prolonged by this because thermions are not emitted through the lower surface of the pellet.

Abstract translation: 直接加热的阴极结构包括其中浸渍有阴极材料的多孔颗粒（500），固定到多孔颗粒（500）的下表面的第一金属构件（510），第二金属构件（520） 第一金属构件（510）和插入在第一和第二金属构件之间的细丝（600）。 制造直接加热的阴极结构体的方法包括以下步骤：制造具有多个空腔的多孔颗粒（500），通过钎焊层（700）将第一金属构件（510）焊接到多孔颗粒的下表面; 将电子辐射材料（600）浸渍到颗粒的空腔中，并将第二金属构件（520）焊接到第一金属构件（510），使得细丝（600）设置在第一和第二金属构件之间。 阴极结构的寿命由此延长，因为热不会通过颗粒的下表面发射。

公开(公告)号：EP0641007A2

公开(公告)日：1995-03-01

申请号：EP94300660.1

申请日：1994-01-28

Applicant: SAMSUNG DISPLAY DEVICES CO., LTD.

Inventor： Kim, Chang-seob ,  Shon, Seok-bong ,  Kim, Seok-gi ,  Jang, Dong-gil ,  Jeong, Bong-uk

IPC: H01J1/15 ,  H01J1/28

CPC classification number: H01J1/15 ,  H01J1/28

Abstract: A direct heating type-cathode structure is provided with filaments (200) which are secured to at least three points on the side surfaces of a porous pellet (100) formed of tungsten or molybdenum, and the cathode material thereof includes an alkaline earth metal oxide of barium. The thus-structured direct-heating-type cathode structure requires a temperature of only 950°C to 980°C to obtain the current density of 10A/cm² and is suitable for use in a color cathode ray tube and specifically in wide-screen televisions and industrial cathode ray tubes.

Abstract translation: 直接加热型阴极结构具有固定在由钨或钼形成的多孔粒料（100）的侧表面上的至少三个点上的丝（200），并且其正极材料包括碱土金属氧化物 的钡。 这样构成的直热式阴极结构体的温度仅为950〜980℃，电流密度为10A / cm 2，适用于彩色阴极射线管，特别适用于宽屏幕电视机 和工业阴极射线管。

公开(公告)号：EP0390269B1

公开(公告)日：1994-06-29

申请号：EP90200688.1

申请日：1990-03-23

Applicant: Philips Electronics N.V.

Inventor： Hasker, Jan ,  Crombeen, Jacobus Eduardus ,  Van Dorst, Petrus Adrianus Maria ,  Van Esdonk, Johannes ,  Hokkeling, Pieter ,  Van Lith, Josef Johannes

IPC: H01J1/28 ,  H01J1/14 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J9/047

公开(公告)号：EP0492763A1

公开(公告)日：1992-07-01

申请号：EP91305106.6

申请日：1991-06-06

Applicant: Hughes Aircraft Company

Inventor： Longo, Robert T. ,  Barillas, Mario A. ,  Forman, Ralph

IPC: H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J9/047

Abstract: A low work function surface for a dispenser cathode structure. The cathode structure comprising a heater and an electron emitting surface substrate or core composed of a porous tungsten matrix impregnated with a barium containing impregnant distributed therethrough. The structure is made by a method in which a nanometer thick layer of scandium oxide is sputtered onto the outermost surface of the impregnated tungsten core, or substrate, and then oxidized by exposing the sputtered scandium oxide surface layer to an oxygen atmosphere. The oxidized surface layer is activated by turning on the heater, for example, to cause the release of a small portion of the barium in the barium-containing impregnant. Some of the released barium migrates into the scandium oxide surface layer to form a monolayer of barium oxide on at least a portion thereof.

Abstract translation: 用于分配器阴极结构的低功函数表面。 阴极结构包括加热器和由浸渍有分布在其中的含钡浸渍剂的多孔钨基体构成的电子发射表面基底或芯。 该结构通过将纳米厚的氧化钪层溅射到浸渍的钨芯或衬底的最外表面上，然后通过将溅射的氧化钪表面层暴露于氧气气氛而被氧化的方法制成。 通过打开加热器来激活氧化的表面层，例如，使含钡浸渍剂中的钡的一小部分释放。 一些释放的钡迁移到氧化钪表面层中，以在其至少一部分上形成氧化钡单层。

公开(公告)号：EP0436360A2

公开(公告)日：1991-07-10

申请号：EP90314024.2

申请日：1990-12-20

Applicant: SAMSUNG DISPLAY DEVICES CO., LTD.

Inventor： Jang, Dong-gil

IPC: H01J1/26 ,  H01J1/28

CPC classification number: H01J29/04 ,  H01J1/26

Abstract: A dispenser cathode for an electron gun comprising a reservoir (2) for thermoelectron emissive material (1) and a sleeve (3) which has an outward flange at the top thereof and receives the reservoir within its upper portion. A heat shielding tube (5) has an inward flange at the top thereof which corresponds to and overlaps with the flange of the sleeve (3) and is welded thereto. A holder supports the heat shielding tube.

Abstract translation: 一种用于电子枪的分配器阴极，其包括用于热电子发射材料（1）的储存器（2）和套筒（3），该套筒（3）的顶部具有向外的凸缘并在其上部容纳储存器。 隔热管（5）在其顶部具有对应于套筒（3）的凸缘并与其重叠的向内的凸缘，并且被焊接到其上。 支架支撑隔热管。

公开(公告)号：EP0401068A1

公开(公告)日：1990-12-05

申请号：EP90401216.8

申请日：1990-05-07

Applicant: THOMSON TUBES ELECTRONIQUES

Inventor： Shroff, Arvind

IPC: H01J1/28

CPC classification number: H01J1/28

Abstract: Cathode thermo-électronique comportant une matrice (4) en matériau poreux, imprègné d'un produit émissif (Aluminates de Barium et de Calcium).
Le corps poreux (4) est recouvert d'une couche (5) en matériau réfractaire non-poreux, et à porosité ordonnée grâce à un ensemble de fines fentes (6) obtenues par gravure. Cette couche est avantageusement obtenue par décomposition chimique en phase gazeuse (C.V.D.) et elle a une épaisseur de l'ordre de une à plusieurs centaines de micromètres.

Abstract translation: 阴极包括由浸渍有发射产物（钡和钙的铝酸盐）的多孔材料制成的基体（4）。 多孔体（4）被无孔耐火材料层（5）覆盖，由于通过蚀刻获得的一组狭缝（6）而具有规定的孔隙率。 该层有利地通过化学气相沉积（C.V.D.）获得并且具有1至几百微米量级的厚度。

公开(公告)号：EP0200276B1

公开(公告)日：1990-02-28

申请号：EP86200730.9

申请日：1986-04-29

Applicant: Philips Electronics N.V.

Inventor： Van Esdonk, Johannes ,  Van Hal, Henricus Albertus Maria ,  Van Lith, Josef Johannes

IPC: H01J1/28 ,  H01J1/14 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J1/14 ,  H01J9/04

公开(公告)号：EP0248417A3

公开(公告)日：1989-10-25

申请号：EP87108036.2

申请日：1987-06-03

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kimura, Sakae c/o Patent Division ,  Nikaido, Masaru c/o Patent Division ,  Yanagibashi, Katumi c/o Patent Division ,  Homma, Katsuhisa c/o Patent Division ,  Ouchi, Yoshiaki c/o Patent Division

IPC: H01J1/28

CPC classification number: H01J1/28

Abstract: According to the present invention, an impregnated cathode is provided wherein an alloy layer (19) of iridium and tungsten is formed on a surface of a porous pellet (11) impregnated with an oxide of an alkali earth metal, wherein a crystal structure of the alloy has an ell phase comprising an hcp structure whose lattice constants a and c satisfy 2.76 s a ≤ 2.78 and 4.44 ≤ c ≤ 4.46, respectively. The impregnated cathode of the present invention maintains stable electron emission characteristics from an early stage of operation.