公开(公告)号：JPS5826607B2

公开(公告)日：1983-06-03

申请号：JP12787375

申请日：1975-10-23

Applicant: BBC BROWN BOVERI & CIE

Inventor： CHAARII BUTSUKUSUBAUMU ,  GERUNOOTO GETSUSHINGERU

IPC: H01J1/144 ,  H01J1/14 ,  H01J1/28

公开(公告)号：JPS5191659A

公开(公告)日：1976-08-11

申请号：JP12787375

申请日：1975-10-23

IPC: H01J1/144 ,  H01J1/14 ,  H01J1/28

公开(公告)号：JP2021039941A

公开(公告)日：2021-03-11

申请号：JP2020135113

申请日：2020-08-07

Applicant: 株式会社コベルコ科研

Inventor： 古賀 健治 ,  高木 敏晃 ,  工藤 史晃 ,  草道 龍彦

IPC: C30B29/52 ,  C30B13/22 ,  C01G55/00 ,  H01J19/24 ,  H01J19/064 ,  C22C5/04 ,  H01J1/144 ,  H01J9/02 ,  H01J9/04 ,  H01J1/304

Abstract: 【課題】電子放出特性に優れた電子ビーム生成用カソード部材と、その製造方法を提案する。 【解決手段】 本発明の電子ビーム生成用カソード部材は、イリジウムとセリウムからなる化合物の単相または2相が95面積%以上を占め、金属イリジウム、および、イリジウムとセリウムのうちの1以上の元素の酸化物のうちの1以上の副成分の含有量が合計で5面積%以下である。該電子ビーム生成用カソード部材製造方法は、金属セリウム原料と金属イリジウム原料を溶解して溶製材を得る溶解工程と、前記溶製材を粉砕して粉砕物を得る粉砕工程と、前記溶製材の粉砕物を所定の高温高圧雰囲気で焼結して結晶体作製用焼結材を得る焼結工程と、前記結晶体作製用焼結材を用い、フローティングゾーン法でイリジウムとセリウムからなる化合物の結晶体を作製する結晶体作製工程とを含む。 【選択図】図1

公开(公告)号：JP2001185075A

公开(公告)日：2001-07-06

申请号：JP2000247156

申请日：2000-08-17

Applicant: GEN ELECTRIC

Inventor： SRIVISTAVA ALOK MANI ,  COMANZO HOLLY ANN ,  BIGIO LAURENCE ,  BEERS WILLIAM WINDER ,  SOULES THOMAS FREDERICK ,  ABASARI EMOKE

IPC: H01J61/06 ,  C01G35/00 ,  C01G41/00 ,  H01J1/144 ,  H01J9/04

Abstract: PROBLEM TO BE SOLVED: To provide an electron emission mixture for a cathode of fluorescent lamp. SOLUTION: The electron emission mixture is made from ceramic materials expressed in formula (A1-xCax)6(Ta1-yWy)211+y (herein, A is barium or combination of barium and strontium, and 0

公开(公告)号：JP2001052596A

公开(公告)日：2001-02-23

申请号：JP2000195592

申请日：2000-06-29

Applicant: SCHLUMBERGER TECHNOLOGIES INC

Inventor： DUVAL PAUL J

IPC: H01J9/02 ,  H01J1/144 ,  H01J1/15 ,  H01J1/28 ,  H01J1/304 ,  H01J37/06

Abstract: PROBLEM TO BE SOLVED: To provide a CNT electron source allowing low-voltage drive and having high reliability, and provide an easy manufacturing method for a low-cost CNT electron source. SOLUTION: This Schottky emitter cathode includes a filament 2 of a first high-melting point metal; a monocrystal needle 1 of a second high-melting point metal having a facet, joined to the filament 2; and a reservoir 3 disposed on at least one of the monocrystal needle 1, the filament 2 and the junction part between the monocrystal needle 1 and the filament 2. The reservoir 3 contains a phase-stabilizing element or compound stabilizing one phase of ZrO2 in a temperature range of 293-1800 deg. K, and ZrO2. The phase-stabilizing element or compound is not a contaminant to the monocrystal needle 1, and is a substance substantially not increasing a work function of any other facet of the monocrystal needle 1.

公开(公告)号：JPH0765692A

公开(公告)日：1995-03-10

申请号：JP7484094

申请日：1994-04-13

Applicant: SAMSUNG ELECTRONIC DEVICES

Inventor： SAI SHIYOUSHIYO ,  SON KAGEKAZU ,  SAI KISHIYAKU ,  SHIYU KEIKUSU ,  RI SOUUON

IPC: H01J1/14 ,  H01J1/144 ,  H01J1/20 ,  H01J9/04

Abstract: PURPOSE: To improve a life property and provide compatibility in a manufacturing process by making an electron-emitting material contain lanthanum oxide and terbium oxide, which forming a needle crystalline structure. CONSTITUTION: An oxide cathode is provided with a metal substrate 2, an electron-emitting material layer 1 containing barium, formed on the metal substrate 2 and a cathode heater 4. The electron-emitting material layer 1 also contains at least one of lanthanum oxide, and terbium oxide is formed in a needle crystalline structure. The amount of at least one of the lanthanum oxide and the terbium oxide is desirably 0.0001-5 wt.% on the basis of the total amount of the electron-emitting material.

公开(公告)号：JPH02304835A

公开(公告)日：1990-12-18

申请号：JP11503090

申请日：1990-04-27

Applicant: PHILIPS NV

Inventor： PETORUSU YAKOBUSU ANTONIUSU MA ,  KARORU ANTONIUSU SUMETSUTSU

IPC: H01J1/14 ,  H01J1/144 ,  H01J1/20

Abstract: PURPOSE: To provide a cathode having excellent electron emission characteristics by a method wherein yttrium oxide, scandium oxide or rare earth metal oxide, the bulk of which has a diameter of not more than 5μm, is contained as particles in electron discharge material. CONSTITUTION: A cathode 1 includes a cylindrical nichrome cathode shaft 3 equipped with a cap 7. This cathode shaft 3 accommodates a helical filament 4 comprising an electrical insulation aluminum oxide layer 6 and a metal helicoidal core 5. Moreover, a layer of a discharge material 2 having a thickness of approximately 70μm is positioned on the cap 7. In this layer 2, yttrium oxide, scandium oxide or rare earth metal oxide, the bulk of which has a diameter of not more than 5μm, preferably 1μm, is contained as particles in the electron discharge material. This leads to uniform discharge behavior so that the cathode can be obtained which acquires excellent electron emission characteristics.

公开(公告)号：US20210217572A1

公开(公告)日：2021-07-15

申请号：US17067734

申请日：2020-10-11

Applicant: Tsinghua University ,  HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： XIN-HE YANG ,  PENG LIU ,  KAI-LI JIANG ,  SHOU-SHAN FAN

IPC: H01J9/04 ,  H01J1/144 ,  H01J1/304 ,  H01J1/146

Abstract: A thermionic emission device comprises a first electrode, a second electrode, a single carbon nanotube, an insulating layer and a gate electrode. The gate electrode is located on a first surface of the insulating layer. The first electrode and the second electrode are located on a second surface of the insulating layer and spaced apart from each other. The carbon nanotube comprises a first end, a second end opposite to the first end, and a middle portion located between the first end and the second end. The first end of the carbon nanotube is electrically connected to the first electrode, and the second end of the carbon nanotube is electrically connected to the second electrode.

公开(公告)号：US07586263B2

公开(公告)日：2009-09-08

申请号：US11693321

申请日：2007-03-29

Applicant: Shunichi Morimoto ,  Norihiro Inaoka ,  Yasuro Kikuchi

Inventor： Shunichi Morimoto ,  Norihiro Inaoka ,  Yasuro Kikuchi

IPC: H01J61/073 ,  H01J17/04 ,  H01J61/06 ,  H01J1/144

CPC classification number: H01J61/86 ,  H01J61/0735

Abstract: A high pressure discharge lamp, in which an anode and a cathode are disposed opposite each other in a bulb, achieves a long service life due to thorium (Th) being stably supplied to the cathode tip for a long time after lamp operation has been commence since the formation of the flicker phenomenon is suppressed over a long time due to the cathode being made of tungsten which contains thorium oxide on a surface space from the cathode tip, a carbide layer of tungsten carbide is formed and the cathode being bordered by an emitter containing body of tungsten which contains thorium dioxide, and a carbide layer of tungsten carbide being formed at least in a region bordering the cathode.

Abstract translation: 其中阳极和阴极彼此相对设置在灯泡中的高压放电灯由于在灯操作已经开始之后长时间稳定地供应到阴极尖端的钍（Th），其使用寿命长 由于阴极由阴极构成的表面空间中含有氧化钍的钨由于阴极被长时间抑制而形成闪烁现象，所以形成碳化钨的碳化物层，阴极由发射极 含有二氧化钍的含钨体和至少在与阴极接壤的区域中形成碳化钨的碳化物层。

公开(公告)号：US5977699A

公开(公告)日：1999-11-02

申请号：US5007

申请日：1998-01-09

Applicant: Kyu-nam Joo ,  Jong-seo Choi ,  Soo-chan Lee ,  Deuk-il Park

Inventor： Kyu-nam Joo ,  Jong-seo Choi ,  Soo-chan Lee ,  Deuk-il Park

IPC: H01J1/14 ,  H01J1/13 ,  H01J1/144 ,  H01J1/20 ,  H01J1/26

CPC classification number: H01J1/144

Abstract: A cathode for an electron tube, includes a base metal having nickel as a main component, and an electron emitting material layer containing an alkaline earth metal oxide having barium oxide as a main component, wherein a metal layer having zirconium as a main component is located between the base metal and the electron emitting material layer. The cathode has an excellent initial electron emitting characteristic and can emit a large quantity of electrons for a long time. Therefore, the cathode is suitable for a larger and higher-definition CRT.

Abstract translation: 电子管的阴极包括以镍为主要成分的母材和含有以氧化钡为主要成分的碱土金属氧化物的电子发射材料层，其中以锆为主要成分的金属层位于 在贱金属和电子发射材料层之间。 阴极具有优异的初始电子发射特性，并且可以长时间发射大量的电子。 因此，阴极适用于更大和更高清晰度的CRT。