KR950006911A - Oxide cathode for electron tube - Google Patents
Oxide cathode for electron tube Download PDFInfo
- Publication number
- KR950006911A KR950006911A KR1019930021670A KR930021670A KR950006911A KR 950006911 A KR950006911 A KR 950006911A KR 1019930021670 A KR1019930021670 A KR 1019930021670A KR 930021670 A KR930021670 A KR 930021670A KR 950006911 A KR950006911 A KR 950006911A
- Authority
- KR
- South Korea
- Prior art keywords
- oxide
- oxide cathode
- electron
- cathode
- emitting material
- Prior art date
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- Solid Thermionic Cathode (AREA)
Abstract
본 발명은 전자관의 전자총에 사용되는 산화물 음극에 관한 것으로서, 금속기체, 그의 상부에 형성되는 적어도 바륨을 함유하는 전자방출물질층, 및 이를 가열하는 수단을 구비하는 산화물 음극에 있어서, 상기 전자방출물질층이 침상 구조를 가지면서 란타늄 산화물 및 테르븀 산화물의 적어도 하나를 더욱 포함하는 것을 특징으로 하는 산화물 음극은, 종래의 산화물 음극에 비하여 수명 향상 효과가 있을 뿐 아니라 종래의 산화물 음극의 제조공정과 100% 공정 호환성을 가지므로 매우 실용적인 산화물 음극이다.The present invention relates to an oxide cathode used for an electron gun of an electron tube, comprising: a metal gas, an electron-emitting material layer containing at least barium formed thereon, and an oxide cathode including means for heating the electron-emitting material. The oxide cathode, characterized in that the layer further has at least one of lanthanum oxide and terbium oxide while having a needle-like structure, has a lifespan-improving effect as compared to the conventional oxide cathode and is 100% of the manufacturing process of the conventional oxide cathode. It is a very practical oxide cathode because of its process compatibility.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 종래의 산화물 음극의 구조를 보여주는 모식 단면도이고,1 is a schematic cross-sectional view showing the structure of a conventional oxide cathode,
제2도는 본 발명의 산화물 음극의 전자방출 물질층의 확대 모식도이다.2 is an enlarged schematic view of the electron-emitting material layer of the oxide cathode of the present invention.
Claims (2)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1993613845 DE69313845T2 (en) | 1993-08-20 | 1993-12-13 | Oxide cathode for electron tubes |
EP19930310036 EP0639848B1 (en) | 1993-08-20 | 1993-12-13 | Oxide cathode for electron tube |
SG1996004185A SG44617A1 (en) | 1993-08-20 | 1993-12-13 | Oxide cathode for electron tube |
TW82110980A TW259877B (en) | 1993-08-20 | 1993-12-24 | |
CN93121498A CN1061462C (en) | 1993-08-20 | 1993-12-29 | Oxide cathode for electron tube |
JP7484094A JPH0765692A (en) | 1993-08-20 | 1994-04-13 | Oxide cathode for electron tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR93-16231 | 1993-08-20 | ||
KR930016231 | 1993-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR950006911A true KR950006911A (en) | 1995-03-21 |
Family
ID=66865854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930021670A KR950006911A (en) | 1993-08-20 | 1993-10-19 | Oxide cathode for electron tube |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950006911A (en) |
-
1993
- 1993-10-19 KR KR1019930021670A patent/KR950006911A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |