发明名称 |
Color picture tube including an electron gun in a coated tube neck |
摘要 |
A cathode ray tube and a plural beam electron gun therefor include a main lens that comprises a tubular focus grid G5 and a conductive coating on the inner surface of the tube neck. The neck coating extends from the region of focus grid G5 towards the faceplate of the cathode ray tube. Preferably, the exit of the focus grid G5 is non-planar and is curved or undulated and focus grid G5 includes an aperture plate intermediate its entrance and exit. The aperture plate preferably has an elliptical center beam opening and connected-semi-elliptical outer-beam openings, to better converge and focus the outer and center electron beams. Also preferably, the focus grid G5 is centrally located in the tube neck and at least partly surrounded by the conductive neck coating.
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申请公布号 |
US6559586(B1) |
申请公布日期 |
2003.05.06 |
申请号 |
US20000621575 |
申请日期 |
2000.07.21 |
申请人 |
SARNOFF CORPORATION;SAMSUNG DISPLAY DEVICES, CO., LTD |
发明人 |
ALIG ROGER CASANOVA;BECHIS DENNIS JOHN;NEW DAVID ARTHUR |
分类号 |
H01J3/02;H01J29/48;H01J29/50;H01J29/51;(IPC1-7):H01J29/70 |
主分类号 |
H01J3/02 |
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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