Color cathode ray tube
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United States of America Patent
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-
Dec 2, 2003
Issued Date -
N/A
app pub date -
Oct 10, 2001
filing date -
Jul 13, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A color cathode ray tube having an electron gun including an electron beam generating portion arrayed in a horizontal direction for generating three electron beams, and a main lens for focusing the three electron beams from the electron beam generating portion upon a fluorescent face. A final stage of the main lens is formed between a focusing electrode and an accelerating electrode. The focusing electrode is divided into at least two focusing electrode parts. A quadrupole electron lens is formed for each of the electron beams between a first focusing electrode part and a second focusing electrode part, and the strength of the quadrupole electron lens for the central electron beam is different from the strength of the quadrupole electron lens for the side electron beams.
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