JPS54139460A - Dielectric strength process method for color picture tube - Google Patents
Dielectric strength process method for color picture tubeInfo
- Publication number
- JPS54139460A JPS54139460A JP4666378A JP4666378A JPS54139460A JP S54139460 A JPS54139460 A JP S54139460A JP 4666378 A JP4666378 A JP 4666378A JP 4666378 A JP4666378 A JP 4666378A JP S54139460 A JPS54139460 A JP S54139460A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- combination
- high voltage
- electrodes
- frequency
- 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
Links
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE: To reduce greatly the occurence of the discharge between electrode, the stray emission, the leak between electrodes and others, by applying the high voltage, the high frequency voltage or the DC high voltage or irregular and regular waves in combination between the electrodes of the electron gun.
CONSTITUTION: For the 1st combination of the voltage, the irregular wave high voltage including the high frequency generated when the voltage of the commercial frequency is amplified to be turned to the high voltage and the regular wave high voltage with which the commercial frequency is given the high voltage up to the prescriber voltage are applied alternately for several to several tens seconds with the voltage increased gradually in order to eliminate the conductive foreign matters sticked to the electrode surface, the lead wire and others, the projected part, the field emission source and others. For the 2nd combination of the voltage, the irregular wave frequency voltage requiring an extremely small amount of application voltage is added to the 1st voltage combination, and thus the reverse effect can be covered for the over-process caused by application of the irregular wave high voltage with elimination of the minute foreign matters. For the 3rd combination of the voltage, the DC voltage of 100W120% rated level is applied to the 1st or 2nd voltage combination between electrodes, thus ensuring the steady characteristics of the electron gun.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4666378A JPS54139460A (en) | 1978-04-21 | 1978-04-21 | Dielectric strength process method for color picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4666378A JPS54139460A (en) | 1978-04-21 | 1978-04-21 | Dielectric strength process method for color picture tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54139460A true JPS54139460A (en) | 1979-10-29 |
Family
ID=12753572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4666378A Pending JPS54139460A (en) | 1978-04-21 | 1978-04-21 | Dielectric strength process method for color picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54139460A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5912542A (en) * | 1982-07-13 | 1984-01-23 | Toshiba Corp | Method for withstand voltage treatment of cathode ray tube |
-
1978
- 1978-04-21 JP JP4666378A patent/JPS54139460A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5912542A (en) * | 1982-07-13 | 1984-01-23 | Toshiba Corp | Method for withstand voltage treatment of cathode ray tube |
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