Flat cathode ray display tubes with integral getter means
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United States of America Patent
Stats
-
May 10, 1988
Grant Date -
N/A
app pub date -
Sep 8, 1986
filing date -
Sep 11, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a flat cathode ray display tube having an electron gun adjacent a rear wall of the tube's envelope which produces an electron beam travelling across the rear wall before being turned in the opposite direction and then deflected onto a screen carried by faceplate opposite the rear wall, getter means is situated in one or more recesses, each defined at least in part by an elongate rib formed in the rear wall, e.g. by pressing, with the recess wall shielding the getter means directly from the gun to prevent contamination. The rib serves also to strengthen the rear wall. A line scanning deflector is similarly shielded.
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Cited Art Landscape
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