发明名称 |
MICROMINIATURE X-RAY TUBE WITH TRIODE STRUCTURE USING A NANO EMITTER |
摘要 |
A microminiature X-ray tube with a triode structure using a nano emitter is provided, which can increase a field emission region as much as possible by means of nano emitters fine-patterned in a cathode to not only increase an emission current per unit area as much as possible but secure high electrical characteristics, reliability, and structural stability by means of a cover and a bonding material. In addition, gate holes having a macro structure can be formed in the gate to promote electron beam focusing by means of the gate without using a separate focusing electrode and to prevent a leakage current from occurring on the gate. Further, an auxiliary electrode can be formed on a top or an inner surface of a cover applied for structural stability to further promote the electron beam focusing and to control the output amounts per individual X-ray tubes output according to current switching to be equal to each other.
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申请公布号 |
WO2009078581(A3) |
申请公布日期 |
2009.08.06 |
申请号 |
WO2008KR06683 |
申请日期 |
2008.11.13 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE;KIM, DAE JUN;SONG, YOON HO;JEONG, JIN WOO |
发明人 |
KIM, DAE JUN;SONG, YOON HO;JEONG, JIN WOO |
分类号 |
H01J35/04 |
主分类号 |
H01J35/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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