JPS55102159A - Color cathode ray tube - Google Patents
Color cathode ray tubeInfo
- Publication number
- JPS55102159A JPS55102159A JP995379A JP995379A JPS55102159A JP S55102159 A JPS55102159 A JP S55102159A JP 995379 A JP995379 A JP 995379A JP 995379 A JP995379 A JP 995379A JP S55102159 A JPS55102159 A JP S55102159A
- Authority
- JP
- Japan
- Prior art keywords
- grids
- voltages
- cathodes
- ray tube
- cathode ray
- 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
Abstract
PURPOSE: To facilitate cut-off adjustment and improve performance of a colored cathode ray tube with an in-line three-beam type electron gun, by keeping its second grids independent, mechanically and electrically, of the cathodes.
CONSTITUTION: A color CRT1 used for character display is equipped with three in-line type cathodes 31, 32, 33 and solid No.1, No.3 and No.4 grids 4, 6, 7. It second grids 51, 52, 53 are independent of the cathodes 31, 32, 33 mechanically and electrically and applied with voltages E21, E22, E23, respectively. The brightness and size of characters displayed on the CRT1 are easily adjusted and improved in quality, by setting the voltage of No.1 grid 4 negative and changing the voltages of the second grids 51, 52, 53 to cut-off voltages one after another.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP995379A JPS55102159A (en) | 1979-01-30 | 1979-01-30 | Color cathode ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP995379A JPS55102159A (en) | 1979-01-30 | 1979-01-30 | Color cathode ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55102159A true JPS55102159A (en) | 1980-08-05 |
Family
ID=11734318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP995379A Pending JPS55102159A (en) | 1979-01-30 | 1979-01-30 | Color cathode ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55102159A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2623939A1 (en) * | 1987-12-01 | 1989-06-02 | Thomson Csf | ELECTRON GUNS FOR CATHODIC RADIATION TUBES |
-
1979
- 1979-01-30 JP JP995379A patent/JPS55102159A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2623939A1 (en) * | 1987-12-01 | 1989-06-02 | Thomson Csf | ELECTRON GUNS FOR CATHODIC RADIATION TUBES |
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