JPS5780635A - High voltage processing method for cathode-ray tube - Google Patents

High voltage processing method for cathode-ray tube

Info

Publication number
JPS5780635A
JPS5780635A JP15597780A JP15597780A JPS5780635A JP S5780635 A JPS5780635 A JP S5780635A JP 15597780 A JP15597780 A JP 15597780A JP 15597780 A JP15597780 A JP 15597780A JP S5780635 A JPS5780635 A JP S5780635A
Authority
JP
Japan
Prior art keywords
grid
high voltage
cathode
voltage processing
grounded
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
JP15597780A
Other languages
Japanese (ja)
Inventor
Toyoshi Sato
Akio Yoshida
Sadamitsu Matsumoto
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 JP15597780A priority Critical patent/JPS5780635A/en
Publication of JPS5780635A publication Critical patent/JPS5780635A/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
    • H01J9/445—Aging of tubes or lamps, e.g. by "spot knocking"

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 suppress drifting discharge by opening the 6th grid and applying the high voltage multiplied by the normal specification to the 5th grid during the high voltage processing when the electrodes below the 5th grid are all grounded and the high voltage multiplied by the normal specification is applied to the 6th grid. CONSTITUTION:A cathode-ray tube which consists of a cathode 11 and the 1st to the 6th grids 12-17 and which incorporates an electron gun that forms a compound primary electron lens by leading the 2nd and 4th grid 13 and the 3rd and 5th grid 16 is high-voltage-processed. First, the electrodes below the 5th grid 16 are grounded and high voltage processing is performed by applying the 60kV high voltage pulses which are twice or three times the normal value to the 6th grid 17 from an anode terminal 23 for six minutes. Then the 6th grid 17 is opened and the cathode 11 and the 1st and 2nd grids 12 and 13 are grounded. The 15 to 20kV high voltage pulses which are twice or three times the normal value are applied to the 5th grid for one to five minitues. Subsequently, high voltage processing is performed for 4min in the same way as mentioned the above. As a result, drifting discharge can be suppressed.
JP15597780A 1980-11-07 1980-11-07 High voltage processing method for cathode-ray tube Pending JPS5780635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15597780A JPS5780635A (en) 1980-11-07 1980-11-07 High voltage processing method for cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15597780A JPS5780635A (en) 1980-11-07 1980-11-07 High voltage processing method for cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS5780635A true JPS5780635A (en) 1982-05-20

Family

ID=15617658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15597780A Pending JPS5780635A (en) 1980-11-07 1980-11-07 High voltage processing method for cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS5780635A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6091532A (en) * 1983-10-24 1985-05-22 Mitsubishi Electric Corp High voltage processing circuit of cathode-ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6091532A (en) * 1983-10-24 1985-05-22 Mitsubishi Electric Corp High voltage processing circuit of cathode-ray tube
JPH047530B2 (en) * 1983-10-24 1992-02-12 Mitsubishi Electric Corp

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