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JPS55143751A - Manufacture of cathode ray tube - Google Patents

Manufacture of cathode ray tube

Info

Publication number
JPS55143751A
JPS55143751A JP5129479A JP5129479A JPS55143751A JP S55143751 A JPS55143751 A JP S55143751A JP 5129479 A JP5129479 A JP 5129479A JP 5129479 A JP5129479 A JP 5129479A JP S55143751 A JPS55143751 A JP S55143751A
Authority
JP
Japan
Prior art keywords
ray tube
cathode ray
manufacture
high frequency
yield
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.)
Pending
Application number
JP5129479A
Other languages
Japanese (ja)
Inventor
Mitsuyuki Shiotani
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5129479A priority Critical patent/JPS55143751A/en
Publication of JPS55143751A publication Critical patent/JPS55143751A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To improve the voltage withstandability and the yield by applying high frequency heating on the electrode of electronic gun during or after the activation. CONSTITUTION:The activating operation is completed in exhaust process and the aging process, but the first and second grids are heated by high frequency heater for about 0.5-2 minutes under approx. 800-900 deg.C during or after activating process. Consequently unnecessary electron produced in the tube is reduced while the damage of cathode due to sparking is eliminated to produce a cathode ray tube having improved voltage withstandability with high yield.
JP5129479A 1979-04-24 1979-04-24 Manufacture of cathode ray tube Pending JPS55143751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5129479A JPS55143751A (en) 1979-04-24 1979-04-24 Manufacture of cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5129479A JPS55143751A (en) 1979-04-24 1979-04-24 Manufacture of cathode ray tube

Publications (1)

Publication Number Publication Date
JPS55143751A true JPS55143751A (en) 1980-11-10

Family

ID=12882894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5129479A Pending JPS55143751A (en) 1979-04-24 1979-04-24 Manufacture of cathode ray tube

Country Status (1)

Country Link
JP (1) JPS55143751A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509090A1 (en) * 1981-07-02 1983-01-07 Rca Corp PROCESS FOR MANUFACTURING A CATHODE RAY TUBE
US4515569A (en) * 1983-04-22 1985-05-07 Rca Corporation Method of electrically processing a CRT mount assembly to reduce arcing and afterglow

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509090A1 (en) * 1981-07-02 1983-01-07 Rca Corp PROCESS FOR MANUFACTURING A CATHODE RAY TUBE
US4406637A (en) * 1981-07-02 1983-09-27 Rca Corporation Processing the mount assembly of a CRT to suppress afterglow
US4515569A (en) * 1983-04-22 1985-05-07 Rca Corporation Method of electrically processing a CRT mount assembly to reduce arcing and afterglow

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