JPS54150962A - Electronic gun for cathode-ray tube - Google Patents
Electronic gun for cathode-ray tubeInfo
- Publication number
- JPS54150962A JPS54150962A JP5894678A JP5894678A JPS54150962A JP S54150962 A JPS54150962 A JP S54150962A JP 5894678 A JP5894678 A JP 5894678A JP 5894678 A JP5894678 A JP 5894678A JP S54150962 A JPS54150962 A JP S54150962A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- aperture
- diameter
- angle
- electronic gun
- 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 enhance the resolving power for the screen as a whole without imparing the resolving power at the screen center part by providing the means which controls the beam dispersion angle in accordance with the deflecting angle of the electron beam and in coaction with the 3rd grid electrode between the 2nd and 3rd grid electrodes of the electronic gun.
CONSTITUTION: The 1st grid electrode 6 having the aperture of diameter D1 and 2nd grid electrode 7 having the aperture of diameter D2 are provided with a space between in front of cathode 5 forming the electronic gun. Then electrode 8 having the aperture of diameter D2' is provided with a space at the back of electrode 6 and 7 to control the dispersion angle, and furthermore 3rd grid electrode 9 having the aperture of diameter D3 is installed at the back of electrode 8. These electrodes are arrayed along radiation direction Z of the electron beam. In such constitution, if the voltage applied to electrode 8 is controlled, the angle is also changed for the beam passing through electrode 9 based on the dispersion angle of the beam. As a result, the deflecting defocus can be corrected sufficiently over the entire screen, thus enhancing the resolving power.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5894678A JPS54150962A (en) | 1978-05-19 | 1978-05-19 | Electronic gun for cathode-ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5894678A JPS54150962A (en) | 1978-05-19 | 1978-05-19 | Electronic gun for cathode-ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54150962A true JPS54150962A (en) | 1979-11-27 |
Family
ID=13098987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5894678A Pending JPS54150962A (en) | 1978-05-19 | 1978-05-19 | Electronic gun for cathode-ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54150962A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02299133A (en) * | 1989-05-15 | 1990-12-11 | Sony Corp | Electron gun |
-
1978
- 1978-05-19 JP JP5894678A patent/JPS54150962A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02299133A (en) * | 1989-05-15 | 1990-12-11 | Sony Corp | Electron gun |
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