JPS54143063A - Electron source for picture display - Google Patents
Electron source for picture displayInfo
- Publication number
- JPS54143063A JPS54143063A JP5181078A JP5181078A JPS54143063A JP S54143063 A JPS54143063 A JP S54143063A JP 5181078 A JP5181078 A JP 5181078A JP 5181078 A JP5181078 A JP 5181078A JP S54143063 A JPS54143063 A JP S54143063A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- electrode
- electron
- voltage
- negative
- 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.)
- Granted
Links
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
PURPOSE: To obtain a uniform electron beam from the entire cathode by eliminating a potential difference across a linear hot cathode, arranged at the flank opening part of a back electrode, while no electron is derived from the cathode.
CONSTITUTION: Inside of cylinder back electron 2 in a channel or U shape, linear cathode 1 is arranged and on the opening side of electrode 2, leader electrode 3 with several through holes 4 and accelerating electrode 5 are both arranged. Here, electrode 2 is applied with a negative voltage, and electrode 3 with a positive voltage. Because of the application of the negative voltage to electrode 2, no electron is emitted even in case of heating cathode 1 by power supply V1, but when a negative pulse voltage is applied to cathode 1 by pulse- voltage generator 7, cathode 1 becomes negative to cause electron emission. At this time, diode 6 is connected to one terminal of cathode 1 with its direction opposite to the pulse voltage and, in consequence, the potential difference across cathode 1 becomes zero, so that the axial potential gradient will be zero. A uniform electron beam can therefore be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5181078A JPS593822B2 (en) | 1978-04-28 | 1978-04-28 | Electron source for image display |
US06/032,752 US4227117A (en) | 1978-04-28 | 1979-04-24 | Picture display device |
US06/433,023 USRE31876E (en) | 1978-04-28 | 1982-10-05 | Picture display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5181078A JPS593822B2 (en) | 1978-04-28 | 1978-04-28 | Electron source for image display |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54143063A true JPS54143063A (en) | 1979-11-07 |
JPS593822B2 JPS593822B2 (en) | 1984-01-26 |
Family
ID=12897261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5181078A Expired JPS593822B2 (en) | 1978-04-28 | 1978-04-28 | Electron source for image display |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS593822B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59146138A (en) * | 1983-02-10 | 1984-08-21 | Matsushita Electric Ind Co Ltd | Driving method of electron source |
JPS61124033A (en) * | 1984-11-20 | 1986-06-11 | Matsushita Electric Ind Co Ltd | Electron gun of image display unit |
JPS6229046A (en) * | 1985-07-31 | 1987-02-07 | Matsushita Electric Ind Co Ltd | Plane image display device |
JPS62249337A (en) * | 1986-04-23 | 1987-10-30 | Mitsubishi Electric Corp | Cathode-ray display device |
US5068579A (en) * | 1989-05-19 | 1991-11-26 | Matsushita Electric Industrial Co., Ltd. | Flat configuration color crt display apparatus with scanning correction for component positioning error |
-
1978
- 1978-04-28 JP JP5181078A patent/JPS593822B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59146138A (en) * | 1983-02-10 | 1984-08-21 | Matsushita Electric Ind Co Ltd | Driving method of electron source |
JPS61124033A (en) * | 1984-11-20 | 1986-06-11 | Matsushita Electric Ind Co Ltd | Electron gun of image display unit |
JPS6229046A (en) * | 1985-07-31 | 1987-02-07 | Matsushita Electric Ind Co Ltd | Plane image display device |
JPS62249337A (en) * | 1986-04-23 | 1987-10-30 | Mitsubishi Electric Corp | Cathode-ray display device |
US5068579A (en) * | 1989-05-19 | 1991-11-26 | Matsushita Electric Industrial Co., Ltd. | Flat configuration color crt display apparatus with scanning correction for component positioning error |
Also Published As
Publication number | Publication date |
---|---|
JPS593822B2 (en) | 1984-01-26 |
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