JPS5732553A - Manufacture of cathode ray tube - Google Patents
Manufacture of cathode ray tubeInfo
- Publication number
- JPS5732553A JPS5732553A JP10856180A JP10856180A JPS5732553A JP S5732553 A JPS5732553 A JP S5732553A JP 10856180 A JP10856180 A JP 10856180A JP 10856180 A JP10856180 A JP 10856180A JP S5732553 A JPS5732553 A JP S5732553A
- Authority
- JP
- Japan
- Prior art keywords
- cathode ray
- ray tube
- unnecessary electron
- generating source
- tube
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE:To improve the breakdown strength and to improve the picture quality, by performing the getter flush in the cathode ray tube then applying the high frequency discharge on the grid to eliminate the unnecessary electron generating source. CONSTITUTION:A heater 3, cathode body 4, first to third grids 5-7 and an anode body 8 are arranged in the neck section 1A of a cathode ray tube 1, and after evacuating the tube an activation process and getter flush process are performed. Then in order to prevent the production of unnecessary electron from unnecessary electron generating source provided due to the activation and the getter flush, high frequency discharge through Tesla coil device 18 is applied from the outside on the part in the neck section 1A facing with the third grid 7. Consequently the unnecessary electron generating source can be dispersed by producing the pole-less discharge ?in the tube thereby the breakdown strength can be improved easily.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10856180A JPS5732553A (en) | 1980-08-04 | 1980-08-04 | Manufacture of cathode ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10856180A JPS5732553A (en) | 1980-08-04 | 1980-08-04 | Manufacture of cathode ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5732553A true JPS5732553A (en) | 1982-02-22 |
Family
ID=14487941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10856180A Pending JPS5732553A (en) | 1980-08-04 | 1980-08-04 | Manufacture of cathode ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5732553A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5150002A (en) * | 1983-09-12 | 1992-09-22 | U.S. Philips Corporation | Electron tube with electrode centering arrangement |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5549838A (en) * | 1978-10-05 | 1980-04-10 | Toshiba Corp | Treating method for electron gun |
-
1980
- 1980-08-04 JP JP10856180A patent/JPS5732553A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5549838A (en) * | 1978-10-05 | 1980-04-10 | Toshiba Corp | Treating method for electron gun |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5150002A (en) * | 1983-09-12 | 1992-09-22 | U.S. Philips Corporation | Electron tube with electrode centering arrangement |
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