JPS56118240A - Impregnated cathode structure - Google Patents

Impregnated cathode structure

Info

Publication number
JPS56118240A
JPS56118240A JP2007380A JP2007380A JPS56118240A JP S56118240 A JPS56118240 A JP S56118240A JP 2007380 A JP2007380 A JP 2007380A JP 2007380 A JP2007380 A JP 2007380A JP S56118240 A JPS56118240 A JP S56118240A
Authority
JP
Japan
Prior art keywords
melting point
coating
high melting
metal
bottomed cup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2007380A
Other languages
Japanese (ja)
Other versions
JPS63887B2 (en
Inventor
Toshiharu Higuchi
Toru Yakabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2007380A priority Critical patent/JPS56118240A/en
Publication of JPS56118240A publication Critical patent/JPS56118240A/en
Publication of JPS63887B2 publication Critical patent/JPS63887B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE:To secure a basic metal board with a bottomed cup highly accurately in mass production manner, by securing them through a coating member for coating a coated layer composed of high melting point metal. CONSTITUTION:A basic metal board 31 is secured through coating members 34, 34 to the outer face at the bottom of a bottomed cup 32 containing a heater 33. The coating members 34, 34 are constructed of a core wire of high melting point metal such as tungsten coated with a coating layer of platinum. The bottomed cup 32 is composed of a high melting point metal such as molybdenum or tantalum or high melting point alloy mainly composed of said metal. While the basic metal board 31 is composed of a porous tungsten impregnated with an electron emission subsistance.
JP2007380A 1980-02-20 1980-02-20 Impregnated cathode structure Granted JPS56118240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007380A JPS56118240A (en) 1980-02-20 1980-02-20 Impregnated cathode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007380A JPS56118240A (en) 1980-02-20 1980-02-20 Impregnated cathode structure

Publications (2)

Publication Number Publication Date
JPS56118240A true JPS56118240A (en) 1981-09-17
JPS63887B2 JPS63887B2 (en) 1988-01-09

Family

ID=12016918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007380A Granted JPS56118240A (en) 1980-02-20 1980-02-20 Impregnated cathode structure

Country Status (1)

Country Link
JP (1) JPS56118240A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473068B1 (en) * 1997-09-30 2005-07-07 오리온전기 주식회사 Cathode manufacturing method of electron gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473068B1 (en) * 1997-09-30 2005-07-07 오리온전기 주식회사 Cathode manufacturing method of electron gun

Also Published As

Publication number Publication date
JPS63887B2 (en) 1988-01-09

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