发明名称 |
Flat cathode ray display tubes with integral getter means |
摘要 |
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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申请公布号 |
US4743797(A) |
申请公布日期 |
1988.05.10 |
申请号 |
US19860904438 |
申请日期 |
1986.09.08 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
EMBERSON, DAVID L.;CAPLE, ADRIAN |
分类号 |
H01J29/86;H01J29/94;H01J31/12;(IPC1-7):H01J29/94 |
主分类号 |
H01J29/86 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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