Electron gun for color cathode ray tube with main lens having composite electron beam passing apertures
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United States of America Patent
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-
Dec 30, 2003
Grant Date -
Nov 29, 2001
app pub date -
Jan 9, 2001
filing date -
May 25, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electron gun for a color cathode ray tube including an electron beam generating unit for generating three electron beams arranged in-line horizontally, an auxiliary lens forming unit for forming an auxiliary lens for focusing and accelerating the electron beams generated by the electron beam generating unit, and a main lens forming unit for forming a main lens, for finally focusing and accelerating the electron beams focused and accelerated by the auxiliary lens forming unit, and having first and second outer electrodes which face each other and in each of which a large electron beam aperture through which the three electron beams pass is located, and first and second inner electrodes respectively located inside the first and second outer electrodes and having three electron beam apertures with vertically elongated rectangular shapes.
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