公开(公告)号：US20060028114A1

公开(公告)日：2006-02-09

申请号：US10778787

申请日：2004-02-13

Applicant: Stijn Willem Herman Steenbrink ,  Pieter Kruit

Inventor： Stijn Willem Herman Steenbrink ,  Pieter Kruit

IPC: H01J1/28

CPC classification number: H01J37/065 ,  B82Y10/00 ,  B82Y40/00 ,  H01J1/28 ,  H01J37/3177 ,  H01J2237/3175 ,  H01J2237/31754 ,  H01J2237/31774

Abstract: A dispenser cathode which comprises an emission surface, a reservoir for material releasing, when heated, work-function-lowering particles, and at least one passage for allowing diffusion of work-function-lowering particles from said reservoir to said emission surface, said emission surface comprising at least one emission area and at least one non-emission area covered with emission-suppressing material and surrounding each emission area, said non-emission area comprising at least one passage connecting said reservoir with said non-emission area and debouching within a diffusion length distance from an emission area for allowing diffusion of work-function-lowering particles from said reservoir to said emission area.

Abstract translation: 分配器阴极，其包括排放表面，用于材料释放的储存器，当被加热时，功能降低颗粒和至少一个通道，用于允许功能降低颗粒从所述储存器扩散到所述发射表面，所述发射 表面包括至少一个发射区域和至少一个覆盖有发射抑制材料并且围绕每个发射区域的非发射区域，所述非发射区域包括将所述储层与所述非发射区域连接的至少一个通道，并在 从放射区域的扩散长度距离，用于允许功能降低颗粒从所述储存器扩散到所述发射区域。

公开(公告)号：US06304024B1

公开(公告)日：2001-10-16

申请号：US09466472

申请日：1999-12-17

Applicant: Eiichirou Uda ,  Toshiharu Higuchi ,  Osamu Nakamura ,  Kiyomi Koyama ,  Sadao Matsumoto ,  Yoshiaki Ouchi ,  Kazuo Kobayashi ,  Takashi Sudo ,  Katsuhisa Homma

Inventor： Eiichirou Uda ,  Toshiharu Higuchi ,  Osamu Nakamura ,  Kiyomi Koyama ,  Sadao Matsumoto ,  Yoshiaki Ouchi ,  Kazuo Kobayashi ,  Takashi Sudo ,  Katsuhisa Homma

IPC: H01J128

CPC classification number: H01J23/087 ,  H01J1/28 ,  H01J9/042 ,  H01J23/04 ,  H01J2223/04

Abstract: There is provided an impregnated-type cathode substrate comprising a large particle diameter low porosity region and a small particle diameter high porosity region which is provided in a side of an electron emission surface of the large particle diameter low porosity region and has an average particle diameter smaller than an average particle diameter of the large particle diameter low pore region and a porosity higher than a porosity of the large particle diameter low porosity region, the impregnated-type cathode being impregnated with an electron emission substance.

Abstract translation: 提供了一种浸渍型阴极基板，其包括大粒径低孔隙率区域和小粒径高孔隙率区域，该区域设置在大粒径低孔隙率区域的电子发射表面的一侧，并且具有平均粒径 小于大粒径低孔区域的平均粒径，孔隙率高于大粒径低孔隙率区域的孔隙率，浸渍型阴极浸渍有电子发射物质。

公开(公告)号：US06252341B1

公开(公告)日：2001-06-26

申请号：US09184132

申请日：1998-11-02

Applicant: Yoji Hasegawa ,  Shinji Ogawa ,  Daichi Imabayashi ,  Makoto Furukawa ,  Nobuyuki Yoshino ,  Junji Sato ,  Yoshirou Hirai ,  Naoto Ogasawara ,  Kuniyasu Kobayashi

Inventor： Yoji Hasegawa ,  Shinji Ogawa ,  Daichi Imabayashi ,  Makoto Furukawa ,  Nobuyuki Yoshino ,  Junji Sato ,  Yoshirou Hirai ,  Naoto Ogasawara ,  Kuniyasu Kobayashi

IPC: H01J114

CPC classification number: H01J1/28

Abstract: An impregnated cathode and a method of manufacturing the same are provided for suppressing emission of unwanted electrons and particles generated from an excess electron emitting substance so as to achieve a steady electron emission characteristic. The impregnated cathode is placed directly beneath an electron emission hole of a first grid. The impregnated cathode is made up of a first sintered porous element whose surface functions as an electron emitting region and a second sintered porous element whose surface is a peripheral region other than the electron emitting region. The porosity of the first sintered porous element is greater than that of the second sintered porous element. Not only the first sintered porous element having the electron emitting region but also the second sintered porous element corresponding to the region around the electron emitting region is impregnated with the electron emitting substance. In addition, the amount of the electron emitting substance per unit volume contained in the first sintered porous element is greater than that contained in the second sintered porous element.

Abstract translation: 提供一种浸渍阴极及其制造方法，用于抑制由过量的电子发射物质产生的不想要的电子和颗粒的发射，以实现稳定的电子发射特性。 浸渍的阴极直接放置在第一栅极的电子发射孔的正下方。 浸渍的阴极由其表面用作电子发射区的第一烧结多孔元件和表面是除电子发射区以外的周边区的第二烧结多孔元组成。 第一烧结多孔元件的孔隙率大于第二烧结多孔元件的孔隙率。 不仅具有电子发射区的第一烧结多孔元件，而且与电子发射区周围的区域相对应的第二烧结多孔元件也被电子发射物质浸渍。 此外，包含在第一烧结多孔元件中的每单位体积的电子发射物质的量大于第二烧结多孔元件中包含的电子发射物质的量。

公开(公告)号：US5881355A

公开(公告)日：1999-03-09

申请号：US120373

申请日：1998-07-22

Applicant: Toshikazu Sugimura ,  Maki Narita ,  Taro Hirai ,  Shoichi Hata

Inventor： Toshikazu Sugimura ,  Maki Narita ,  Taro Hirai ,  Shoichi Hata

IPC: H01J9/04 ,  C22C1/05 ,  C22C32/00 ,  H01J1/28 ,  B22F1/00

CPC classification number: C22C1/05 ,  C22C32/0026 ,  H01J1/28 ,  B22F2998/10 ,  B22F2999/00

Abstract: A method of fabricating a cathode member or pellet is provided, which realizes the sufficiently large increase of the electron emission capability by the current activation process and that prevents the maximum cathode current from being lowered as long as an electron emissive agent exists in the cathode member. First, (a) a nickel powder and a rare-earth-metal oxide powder are provided. (b) The nickel powder and the rare-earth-metal oxide powder are uniformly mixed together, thereby producing a first powder mixture. (c) The first powder mixture is heated in a hydrogen atmosphere, an inert atmosphere, or a vacuum atmosphere, thereby producing an intermetallic compound of nickel and the rare-earth metal in the first powder mixture. (d) The first powder mixture containing the intermetallic compound is uniformly mixed with an electron-emissive agent powder, thereby producing a second powder mixture. (e) The second powder mixture is sintered by a HIP process, thereby forming a cathode member. The intermetallic compound produced in the first powder mixture has a function to chemically decompose the electron emissive agent to thereby increase the electron emission performance of the electron emissive agent.

Abstract translation: 提供一种制造阴极部件或丸粒的方法，其通过电流活化过程实现了电子发射能力的足够大的增加，并且只要阴极部件中存在电子发射剂，就可以防止最大的阴极电流降低 。 首先，提供（a）镍粉和稀土金属氧化物粉末。 （b）将镍粉末和稀土金属氧化物粉末均匀混合，制成第一粉末混合物。 （c）将第一粉末混合物在氢气氛，惰性气氛或真空气氛中加热，由此在第一粉末混合物中产生镍和稀土金属的金属间化合物。 （d）将含有金属间化合物的第一粉末混合物与电子发射剂粉末均匀混合，从而产生第二粉末混合物。 （e）通过HIP工艺烧结第二粉末混合物，从而形成阴极部件。 在第一粉末混合物中产生的金属间化合物具有化学分解电子发射剂的功能，从而增加电子发射剂的电子发射性能。

公开(公告)号：US5703429A

公开(公告)日：1997-12-30

申请号：US571479

申请日：1995-12-13

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

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

IPC: H01J1/15 ,  H01J1/28 ,  H01J9/04 ,  H01J29/02 ,  H01J29/04 ,  H01J19/06

CPC classification number: H01J1/28

Abstract: A directly heated cathode structure includes a porous pellet impregnated with an electron radiating material, a cup-shaped container holding the porous pellet, a metal member welded to the container, and a filament between the container and the metal member, restricting thermionic emission through the base and sides of the pellet and extending the life of the cathode structure.

Abstract translation: 直接加热的阴极结构包括浸渍有电子辐射材料的多孔颗粒，保持多孔颗粒的杯形容器，焊接到容器的金属构件和容器和金属构件之间的细丝，限制热离子发​​射通过 颗粒的底部和侧面并延长阴极结构的寿命。

公开(公告)号：US5701052A

公开(公告)日：1997-12-23

申请号：US579519

申请日：1995-12-27

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

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

IPC: H01J1/15 ,  H01J1/28 ,  H01J9/04 ,  H01J29/04 ,  H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/28 ,  H01J2201/281

Abstract: A directly heated cathode structure includes a porous pellet impregnated with a cathode material, a first metal member fixed to a surface of the porous pellet, a second metal member welded to the first metal member, and a filament interposed between the first and second metal members. A method for manufacturing a directly heated cathode structure includes manufacturing a porous pellet having a multiplicity of cavities, welding a first metal member to a surface of the porous pellet with a brazing layer, impregnating the cavities of the pellet with an electron radiating material, and welding a second metal member to the first metal member with a filament disposed between the first and second metal members. The useful life of the cathode structure is prolonged since thermions are not emitted through the surface of the pellet covered by the metal member.

Abstract translation: 直接加热的阴极结构包括浸渍有阴极材料的多孔颗粒，固定到多孔颗粒的表面的第一金属构件，焊接到第一金属构件的第二金属构件和插入在第一和第二金属构件之间的细丝 。 制造直接加热的阴极结构的方法包括制造具有多个空腔的多孔颗粒，用钎焊层将第一金属构件焊接到多孔颗粒的表面，用电子辐射材料浸渍颗粒的空腔，以及 用设置在第一和第二金属构件之间的细丝将第二金属构件焊接到第一金属构件。 阴极结构的使用寿命延长，因为不会通过由金属构件覆盖的颗粒的表面发射热量。

公开(公告)号：US5424620A

公开(公告)日：1995-06-13

申请号：US174323

申请日：1993-12-30

Applicant: Bak-mee Cheon ,  Kwang-hoon Jeong

Inventor： Bak-mee Cheon ,  Kwang-hoon Jeong

IPC: H01J1/15 ,  H01J1/28 ,  H01J29/04 ,  H01J29/98 ,  H01J29/70

CPC classification number: H01J29/98 ,  H01J1/28 ,  H01J29/04

Abstract: A display apparatus for displaying pictures virtually instantaneously adopts a direct-heating type cathode of an impregnated structure, and includes a cathode ray tube having a dispenser cathode wherein a cathode material is filled in pores of a porous body and a porous heater is directly connected to the cathode material. A voltage generator of the apparatus produces a first voltage for driving the heater. A video signal supply portion supplies a video signal to the cathode, while a deflector deflects horizontally and vertically an electron beam generated from the cathode to produce a raster by scanning the fluorescent surface of the cathode ray tube. A flyback transformer generates a second voltage to be supplied to the anode and one or more grids of the cathode ray tube using a horizontal deflection output signal supplied from the deflector. With the described arrangement, an electron-emitting velocity of an electron gun reaches its maximum value within about one second after power is applied. Thus, the display apparatus can be adapted to an HDTV requiring high current density electron-emitting characteristics.

Abstract translation: 用于显示图像的显示装置实际上瞬时地采用浸渍结构的直接加热型阴极，并且包括具有分配器阴极的阴极射线管，其中阴极材料填充在多孔体的孔中并且多孔加热器直接连接到 阴极材料。 设备的电压发生器产生用于驱动加热器的第一电压。 视频信号提供部分将视频信号提供给阴极，同时偏转器水平和垂直偏转从阴极产生的电子束，以通过扫描阴极射线管的荧光表面产生光栅。 回扫变压器使用从偏转器提供的水平偏转输出信号产生将被提供给阳极和阴极射线管的一个或多个栅极的第二电压。 利用所述的布置，在施加电力之后约1秒内电子枪的电子发射速度达到其最大值。 因此，显示装置可以适用于需要高电流密度电子发射特性的HDTV。

公开(公告)号：US5264757A

公开(公告)日：1993-11-23

申请号：US606020

申请日：1990-10-30

Applicant: Frans M. M. Snijkers ,  Jacobus E. Crombeen

Inventor： Frans M. M. Snijkers ,  Jacobus E. Crombeen

IPC: H01J9/04 ,  H01J1/28

CPC classification number: H01J1/28

Abstract: To maintain a monolayer of scandium, which is necessary for a satisfactory emission on the surface of a scandate cathode, at least the top layer of the cathode is provided with a scandium-containing oxidic phase from which Scandium is supplied by segregation from this oxidic phase.

公开(公告)号：US5074818A

公开(公告)日：1991-12-24

申请号：US688405

申请日：1991-04-22

Applicant: Louis E. Branovich ,  Donald W. Eckart ,  Gerard L. Freeman ,  Bernard Sith

Inventor： Louis E. Branovich ,  Donald W. Eckart ,  Gerard L. Freeman ,  Bernard Sith

IPC: H01J1/28

CPC classification number: H01J1/28

Abstract: An improved scandate cathode is made from a hollow cylinder of a metal thatill not react with Sc.sub.2 (WO.sub.4).sub.3. The first step in making such a cathode is to insert a metal plug at the bottom of the cylinder to a height that will allow the remaining volume of the cylinder to be filled with the reactants WO.sub.3 and Sc.sub.2 O.sub.3. Next, the reactants are heated in a vacuum to about 1100.degree. C. to form the reaction product Sc.sub.2 (WO.sub.4).sub.3. The plug is then removed from the cylinder, the cylinder is inverted, and BaH.sub.2 is added to the volume of the cylinder that had been occupied by the plug. Finally, the cylinder is heated to decompose the BaH.sub.2.

Abstract translation: 由不会与Sc2（WO4）3反应的金属的中空圆筒制成改进的钪酸盐阴极。 制造这样的阴极的第一步是将金属塞子插入圆筒的底部至允许圆筒的剩余体积填充反应物WO 3和Sc 2 O 3的高度。 接下来，将反应物在真空中加热至约1100℃以形成反应产物Sc2（WO4）3。 然后将塞子从圆筒中取出，将圆筒倒置，并将BaH2加入已被塞子占据的圆筒的体积中。 最后，加热汽缸以分解BaH2。

公开(公告)号：US4986788A

公开(公告)日：1991-01-22

申请号：US431381

申请日：1989-11-02

Applicant: Jung Jongin

Inventor： Jung Jongin

IPC: H01J1/14 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J9/047 ,  H01J1/14 ,  H01J1/28

Abstract: A cathode and a process of manufacturing the same are disclosed, the cathode comprising; a molybdenum cup having a convex portion, free barium atoms produced through reactions with an impregnation compound, a porous metal layer sealingly welded to the top of the cup, and a heating member having an uppermost head portion inserted into the lower space of the convex portion of the cup. According to the cathode of the present invention, the disadvantages of the conventional cathodes such as the speedy evaporation of barium during the initial stage, and the degrading of the performance and the shortening of the life expectancy due to the reaction byproducts produced in the porous metal layer can be overcome, while a quick start-up characteristics can also be obtained owing to the speedy diffusion of the barium.

Abstract translation: 公开了阴极及其制造方法，阴极包括： 具有凸部的钼杯，通过与浸渍化合物的反应产生的游离钡原子，密封地焊接到杯的顶部的多孔金属层，以及加热构件，其具有插入到凸部的下部空间中的最上部头部 的杯子 根据本发明的阴极，常规阴极的缺点如初始阶段钡的快速蒸发以及性能的降低以及由多孔金属中产生的反应副产物引起的预期寿命的缩短 可以克服层，同时由于钡的快速扩散也可以获得快速的启动特性。