公开(公告)号：JP2001006521A

公开(公告)日：2001-01-12

申请号：JP17500999

申请日：1999-06-22

Applicant: KANSAI NIPPON ELECTRIC

Inventor： SUGIMURA TOSHIKAZU ,  NARITA KAZUNORI

IPC: H01J1/28 ,  H01J1/142 ,  H01J1/26 ,  H01J9/04 ,  H01J29/04

Abstract: PROBLEM TO BE SOLVED: To provide an oxide cathode with a new structure having almost no reduction of electron emission within the used period of a color picture tube even if it has high current density exceeding 1 ampere/square cm, although it has an activation time and an operating temperature equivalent to those in a conventional oxide cathode, and a color picture tube loaded with it. SOLUTION: This cathode body structure is equipped with cathode pellets 11 formed by uniformly mixing nickel powder, scandium oxide powder and emission agent powder and integrally sintering the mixture in hot isotropic pressure process, and a member of an alloy blended with at least one kind of metal selected from chromium, tantalum, molybdenum, zirconium, tungsten and cobalt and having nickel as a main ingredient is disposed in a part of the supporting member 12 of the cathode pellets 11 being in direct contact with the cathode pellets 11.

公开(公告)号：JP2000100311A

公开(公告)日：2000-04-07

申请号：JP13158899

申请日：1999-05-12

Applicant: SAMSUNG DISPLAY DEVICES CO LTD

Inventor： CHOI JONG-SEO ,  KIN JUNCHO ,  JOO GYU-NAM

IPC: H01J1/26 ,  H01J1/14 ,  H01J1/142 ,  H01J1/20 ,  H01J1/28 ,  H01J9/04 ,  H01J29/04

Abstract: PROBLEM TO BE SOLVED: To provide a cathode for an electron gun, capable of realizing long service life at high current density by securing a diffusion route of a reductive element contained in a base metal and smoothly achieving generation of free barium atoms. SOLUTION: This negative electrode comprises a base metal 6 that mainly contains nickel and contains at least one kind of reductive element, a metal layer 12 that is provided on the base metal 6 and has recessed and projecting part 12a, and an electron emission material layer 14, that is provided on the metal layer 12 and contains alkaline earth metal oxide containing at least barium.

公开(公告)号：JP2928155B2

公开(公告)日：1999-08-03

申请号：JP7211496

申请日：1996-03-27

Applicant: MITSUBOSHIDENKAN KK

Inventor： SHU KEINAN ,  SAI SHOSHO ,  SAI KISHAKU ,  KIN KONBAI ,  RI SOON

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

公开(公告)号：JPH09147735A

公开(公告)日：1997-06-06

申请号：JP20851896

申请日：1996-08-07

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： OZAWA TETSUO ,  HAYASHIDA YOSHIKI ,  SAKURAI HIROSHI

IPC: H01J29/04 ,  H01J1/142 ,  H01J1/316 ,  H01J9/04 ,  H01J1/14 ,  H01J1/20

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube emitter material capable of maintaining a sufficient life when it is used for emission at a current density exceeding 2A/cm and suitable for a large screen, high luminance, and high resolution by dispersing or separating at least one kind of alkaline earth metal carbonates in a mixed crystal or a solid solution. SOLUTION: At least one kind of alkaline earth metal carbonates is dispersed or separated in a mixed crystal or a solid solution of at least two kinds of alkaline earth metal carbonates to form this emitter used as a cathode-ray tube emitter material. The alkaline earth metal carbonate is fitted on the base substance of a cathode, and it is thermally decomposed in vacuum and formed into an alkaline earth metal oxide.

公开(公告)号：JPH09129118A

公开(公告)日：1997-05-16

申请号：JP7211496

申请日：1996-03-27

Applicant: SAMSUNG ELECTRONIC DEVICES

Inventor： SHIYU KEIKUSU ,  SAI SHIYOUSHIYO ,  SAI KISHIYAKU ,  KIN KONBAI ,  RI SOUUON

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

Abstract: PROBLEM TO BE SOLVED: To enable the manufacture of a cathode with improved service life and cutoff drift charracteristic by method 100% compatable with a conventional method. SOLUTION: In a cathode for an electron tube where an electron emitting material layer 1 containing alkali earth metal oxide having barium oxide as its main component formed on a metal base 2 having nickel as its main component, La, Mg and Mn oxide are contained further in the layer 1. Accordingly, the service life and cutoff drift characteristic are improved with the manufacturing method 100% compatible with a conventional method.

公开(公告)号：JPH0393126A

公开(公告)日：1991-04-18

申请号：JP22843389

申请日：1989-09-05

Applicant: SONY CORP

Inventor： HARA MICHIO

IPC: H01J1/14 ,  H01J1/142 ,  H01J1/20 ,  H01J9/04

Abstract: PURPOSE:To improve electron emitting function by using alkaline earth metal carbonates which contain at least one of zinc(Zn) and aluminum(Al) in their crystal structure as alkaline earth metal carbonates. CONSTITUTION:In an oxide-coated type cathode, alkaline earth metal carbonates containing at least one of Zn and Al in their crystal structure are used as alkaline earth metal carbonates. Addition of Zn and Al to the cathode has an effect to improve electron emitting function in the same as addition of In and further during the preparation of the cathode, characteristic of Zn and Al as elements forming amphoteric compounds are made effective so that supposed-to-be harmful elements or their compounds contained in the alkaline earth metal carbonate are sufficiently removed. In this way, the property of the cathode is stabilized easily and the improvement of the electron emitting function of the cathode results in decreasing the working temperature of the cathode and also extending its service life.

公开(公告)号：JPH02195628A

公开(公告)日：1990-08-02

申请号：JP31903989

申请日：1989-12-11

Applicant: PHILIPS NV

Inventor： PETORUSU YAKOBUSU ANTONIUSU MA

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

Abstract: PURPOSE: To provide an oxide cathode of a long effective life by containing a hafnium oxide or zirconium oxide of 1 to 10% by weight in electron emitting material. CONSTITUTION: A cathode 1 has a tubular cathode shaft 3 equipped with a cap 7. The cap 7 is substantially made of nickel, and can have reduction means such as silicon, magnesium, manganese, aluminum, and tungsten. The cathode shaft 3 contains spiral filament 4, and the filament comprises a core 5 wound into a spiral and an electric insulation aluminum oxide layer 6. A radiative material thick layer 2 of about 70μm in thickness is provided on the cap 7. The layer 2 has a mixture of a barium oxide and strontium oxide, or a mixture of barium oxide, strontium oxide, and calcium oxide which is obtained by giving barium strontium carbonate and decomposing the same.

公开(公告)号：US20100019646A1

公开(公告)日：2010-01-28

申请号：US12309667

申请日：2006-07-31

Applicant: Charles M. Lukehart ,  Jason A. Michel ,  Timothy Fisher ,  Vance Robinson

Inventor： Charles M. Lukehart ,  Jason A. Michel ,  Timothy Fisher ,  Vance Robinson

IPC: H01J1/142 ,  H01B1/24

CPC classification number: C22C49/02 ,  C22C49/14

Abstract: A carbon-based composition comprising graphite carbon nano-fibers intercalated with a metal useful as a thermionic electron emission material.

Abstract translation: 一种碳基组合物，其包含插入有用作热电子发射材料的金属的石墨碳纳米纤维。

公开(公告)号：US6091189A

公开(公告)日：2000-07-18

申请号：US771916

申请日：1996-12-23

Applicant: Takashi Shinjo ,  Riichi Kondo ,  Masato Saito ,  Takuya Ohira ,  Hiroyuki Teramoto ,  Kinjirou Sano

Inventor： Takashi Shinjo ,  Riichi Kondo ,  Masato Saito ,  Takuya Ohira ,  Hiroyuki Teramoto ,  Kinjirou Sano

IPC: H01J1/142 ,  H01J1/26 ,  H01K1/04

CPC classification number: H01J1/142 ,  H01J1/26

Abstract: A cathode for an electron tube including a base body having nickel as a major component and including at least one kind of reducing agents, a metal member in a layer-like shape, which has as a major component a metal provided with a reducing power equivalent to or smaller than a reducing power of the at least one kind of reducing agents included in the base body and larger than a reducing power of nickel and which is formed on faces of the base body, an electron emitting substance layer formed by depositing alkaline earth metal oxides including barium on the metal member, wherein the metal member is formed on the faces of the base body such that the base body is restrained from deforming by thermal stresses of intermetallic compounds formed at portions of the base body bounded with the metal member.

Abstract translation: 一种电子管的阴极，其包括以镍为主要成分的基体，并且包括至少一种还原剂，层状形式的金属构件，其具有作为主要组分的金属，该金属具有还原能当量 至少包含在所述基体中的所述至少一种还原剂的还原力大于或小于所述基体的表面上形成的还原能力的电子发射物质层，所述电子发射物质层通过沉积碱土 在金属构件上的包含钡的金属氧化物，其中金属构件形成在基体的表面上，使得通过在与金属构件界定的基体的部分处形成的金属间化合物的热应力来限制基体变形。

公开(公告)号：US5982083A

公开(公告)日：1999-11-09

申请号：US744453

申请日：1996-11-07

Applicant: Gyu-Nam Ju ,  Jong-Seo Choi ,  Keun-Bae Kim ,  Kwang-Min Lee ,  Kwi-Seok Choi ,  Su-Chan Lee ,  Sang-Jin Lee

Inventor： Gyu-Nam Ju ,  Jong-Seo Choi ,  Keun-Bae Kim ,  Kwang-Min Lee ,  Kwi-Seok Choi ,  Su-Chan Lee ,  Sang-Jin Lee

IPC: H01J1/142 ,  H01J1/13

CPC classification number: H01J1/142

Abstract: A cathode for an electron tube includes a layer of a electron emitting substance containing alkaline earth metal oxides containing 0.01--20.0 wt % of both a lanthanum compound and a magnesium compound or a lanthanum-magnesium compound disposed on a base metal including nickel as a major component and tungsten as a minor component. The tungsten prevents embrittlement and ensures a continuing supply of fill barium in the electron-emitting substance. The cathode enjoys full interchangeability with the conventional oxide cathode and a 15-30% longer life span.

Abstract translation: 电子管的阴极包括含有碱土金属氧化物的层，所述碱土金属氧化物含有0.01-20.0重量％的镧化合物和镁化合物，或镧 - 镁化合物，其配置在包含镍作为主要的贱金属 组分和钨作为次要组分。 钨防止脆化并确保在电子发射物质中持续供应填充钡。 阴极与常规氧化物阴极完全互换，寿命长达15-30％。