ELECTRON BEAM FOCUSING ELECTRODE, ELECTRON GUN USING THE SAME, AND METHOD FOR REDUCING DIFFUSION PHENOMENON OF ELECTRON BEAM HAVING SQUARE SECTION

摘要

PROBLEM TO BE SOLVED: To provide an electron beam focusing electrode capable of reducing a diffusion phenomenon of electron beam, an electron gun using the same, and a method for reducing a diffusion phenomenon of electron beam having a square section.

SOLUTION: The electron beam focusing electrode comprises: a plate having a polygonal through-hole; and a projection part formed on at least one side of the through-hole. By using the electron beam focusing electrode, the diffusion phenomenon of electron beam having a square section can be reduced to increase the output of an electron gun, and focusing of electron beam can be facilitated.

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