Electron beam focusing electrode and electron gun using the same
AssigneesSamsung Electronics Co., Ltd., Seoul National University Industry Foundation
InventorsChan Wook Baik, Anurag Srivastava, Jong Min Kim, Sun Il Kim, Young Mok Son, Gun Sik Park, Jin Kyu So
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Abstract
An electron beam focusing electrode and an electron gun using the same may include a plate having a polygonal through-hole; at least a projecting portion formed on at least one side of the through-hole. By using the electron beam focusing electrode, a spreading phenomenon of an electron beam having a rectangular cross section may be reduced. Further, the output of the electron gun may be increased, and electron beams may be easily focused.
Claims11
An electron beam focusing electrode, comprising:
- a focusing plate having a polygonal through-hole and configured to receive an applied voltage;
- and
- a projecting portion formed on at least one side of the through-hole.
A method of reducing a spreading phenomenon of an electron beam with rectangular cross section, comprising:
- forming an electric field in a polygonal through-hole of a focusing plate of an electron beam focusing electrode, configured to receive an applied voltage from a power source, and having a projection portion arranged on at least one side of the through-hole;
- passing an electron beam through the through-hole;
- and
- forming a cross section of the electron beam with the electric field.
Dependencies are inferred from the claim text.