发明名称 |
Apparatus for compensating convergence in a color cathode ray tube |
摘要 |
This invention relates to an apparatus for compensating convergence in a color cathode ray tube, more particularly to an apparatus for minimizing the convergence drift variance of R and B electron beams on a screen so as to improve convergence characteristics and a picture quality on the screen. The apparatus for compensating convergence drift comprising: a convergence purity magnet for converging the electron beams emitted from the electron gun on the specific point of the screen of the color cathode ray tube; and a supplementary magnet ring 52 with at least four-magnetic pole contacting the neck N between a second grid electrode 24 and the deflection yoke 60. Particularly, the supplementary magnet ring is mounted on a holder 48 of the convergence purity magnet 40 and has a pole arrangement to move the convergence of the R and B beams in the direction opposite to the electron gun from the screen.
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申请公布号 |
US6160343(A) |
申请公布日期 |
2000.12.12 |
申请号 |
US19980152304 |
申请日期 |
1998.09.14 |
申请人 |
SAMSUNG DISPLAY DEVICES CO., LTD. |
发明人 |
JOUNG, JANGJIN |
分类号 |
H01J29/54;H01J29/70;(IPC1-7):H01J29/70 |
主分类号 |
H01J29/54 |
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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