Projection tube having different neck diameters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 14, 2006
Grant Date -
Dec 5, 2002
app pub date -
Jul 19, 2001
filing date -
May 29, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A projection tube having a high focusing performance at a low deflection power includes a funnel, a neck portion and a stem portion which seals the neck portion. The neck portion of the projection tube includes a first neck portion which is connected to the funnel and has a first neck outer diameter, and also includes a second neck portion which accommodates an electron gun and has a second neck outer diameter which is larger than the first neck outer diameter.
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