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US 11,798,773 B2Granted
Emitter with excellent structural stability and enhanced efficiency of electron emission and X-ray tube comprising the same
AssigneeAweXome Ray, Inc.
InventorsSe Hoon Gihm, Keun Soo Jeong
Life of this patent
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Abstract
The present invention provides an emitter, which comprises carbon nanotubes and is excellent in the efficiency of electron emission, and an X-ray tube comprising the same.
Claims18
An emitter, which comprises a first tube composed of a carbon nanotube sheet that comprises a plurality of unit yarns having a structure in which a plurality of carbon nanotubes are aggregated and extend in a first direction,
- wherein the first tube is in the form of a pipe having a first internal space in which the carbon nanotube sheet is rolled about an imaginary first axis parallel to the first direction,
- wherein the respective front ends of the unit yarns are oriented in the same direction as the axis,
- wherein in the first tube, the carbon nanotube sheet is rolled such that an overlapping portion exists from a rolling starting point to a rolling ending point, and
- wherein the unit yarns in the overlapping portion are fixed by π-π interaction while they are contiguous to each other.
1 more element
An emitter, comprising:
- a first tube composed of a carbon nanotube sheet that comprises a plurality of unit yarns having a structure in which a plurality of carbon nanotubes are aggregated and extend in a first direction,
- wherein the first tube is in the form of a pipe having a first internal space in which the carbon nanotube sheet is rolled about an imaginary first axis parallel to the first direction, and
- respective front ends of the unit yarns are oriented in the same direction as the axis, which comprises a second tube in which a plurality of the first tubes are arranged to form a pipe shape,
- wherein the second tube comprises a second internal space formed by arranging the plurality of first tubes about an imaginary second axis parallel to the first direction, the second internal space has a structure in which both ends of the first internal space in the first direction are opened and the open ends are communicated with each other, and
- wherein the respective front ends of the first tubes are oriented in the same direction as the axis.
2 more elements
Dependencies are inferred from the claim text.