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Detail
Registered MICROMINIATURE X-RAY TUBE WITH TRIODE STRUCTURE USING CNT
- Inventors
- Kim Dae Jun, Yoon-Ho Song, Jeong Jin-Woo
- Application No.
- 12743496 (2008.11.13)
- Publication No.
- 20110116603 (2011.05.19)
- Registration No.
- 8300769 (2012.10.30)
- Country
- UNITED STATES
- Abstract
- 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.
- KSP Keywords
- Auxiliary electrode, Bonding material, Electron Beam, Electron beam focusing, Focusing electrode, Inner surface, Leakage current, Structural stability, Triode structure, beam focusing, electrical characteristics, emission current, field emission, x-ray, x-ray tube