Cathode ray tube
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United States of America Patent
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Nov 9, 2004
Grant Date -
Feb 6, 2003
app pub date -
Jul 12, 2002
filing date -
Jul 30, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a cathode ray tube which exhibits a favorable contrast by enhancing a speed modulation effect. A front-stage anode electrode and a focus electrode which constitute an electron gun are respectively divided into a plurality of portions. A plurality of portions of the divided front-stage anode electrode are arranged in the tube axis direction at given intervals and are electrically connected with each other. A plurality of portions of the divided focus electrode are arranged in the tube axis direction at given intervals and are electrically connected with each other. Due to gaps formed in the front-stage anode electrode and the focus electrode, the speed modulation effect is increased.
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