JPS54143058A - Electric-field radiation cathode and its manufacture - Google Patents
Electric-field radiation cathode and its manufactureInfo
- Publication number
- JPS54143058A JPS54143058A JP5083078A JP5083078A JPS54143058A JP S54143058 A JPS54143058 A JP S54143058A JP 5083078 A JP5083078 A JP 5083078A JP 5083078 A JP5083078 A JP 5083078A JP S54143058 A JPS54143058 A JP S54143058A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- base body
- cathode base
- electron
- control circuit
- 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 realize a cathode which can obtain a large current value by forming several needle-shaped cathodes made of a polymer, whose curvature radius at its tip can be controlled freely, at desired positions on a cathode base body.
CONSTITUTION: In the electronic apparatus with the function of a scanning electron microscope, cathode base body 8 is fitted to stage 7 in sample room 6 and a signal in a scanning-image observation mode is transmitted from control circuit 19 to power supplies 15 to 17. An electron beam from electron gun 2 scans on the surface of cathode base body 8 while forming a spot, so that the scanning image of cathode base body 8 will be obtained on cathode-ray tube 14. Over the observation of the image of the tip of cathode bose body 8, positions where several electron radiation parts should be formed are fixed and the voltage value of deflection power supply 17 equivalent to each position is stored in control circuit 19. Next, control circuit 19 is changed over to the carbon-polymer formation mode. After hydrocarbon is supplied with valve 11 opened, circuit 19 controls the electron beam to irradiate fixed positions on cathode base body 8 with the electron beam for a fixed time, thereby forming several electron radiation parts of a carbon polymer.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5083078A JPS54143058A (en) | 1978-04-28 | 1978-04-28 | Electric-field radiation cathode and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5083078A JPS54143058A (en) | 1978-04-28 | 1978-04-28 | Electric-field radiation cathode and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54143058A true JPS54143058A (en) | 1979-11-07 |
Family
ID=12869670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5083078A Pending JPS54143058A (en) | 1978-04-28 | 1978-04-28 | Electric-field radiation cathode and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54143058A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000500906A (en) * | 1995-11-15 | 2000-01-25 | イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー | Annealed carbon soot field emitter and field emitter cathode made therefrom |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100658A (en) * | 1978-01-25 | 1979-08-08 | Jeol Ltd | Method and device for manufacturing electric-field radiation cathode |
-
1978
- 1978-04-28 JP JP5083078A patent/JPS54143058A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100658A (en) * | 1978-01-25 | 1979-08-08 | Jeol Ltd | Method and device for manufacturing electric-field radiation cathode |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000500906A (en) * | 1995-11-15 | 2000-01-25 | イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー | Annealed carbon soot field emitter and field emitter cathode made therefrom |
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