发明名称 |
Cathode-ray tube apparatus |
摘要 |
A second grid is supplied with a low potential acceleration voltage. A fourth grid and a sixth grid are supplied with a first focus voltage. A third grid and a seventh grid are supplied with a dynamic focus voltage (Vf2+Vd). A prefocus lens having a horizontal and vertical focusing function is formed between the second grid and the third grid. An asymmetrical lens section having a horizontal diverging function and a vertical focusing function is formed between the third grid and the fourth grid. The prefocus lens and the asymmetrical lens section are electrostatically coupled.
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申请公布号 |
US6570349(B2) |
申请公布日期 |
2003.05.27 |
申请号 |
US20020033779 |
申请日期 |
2002.01.03 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KIMIYA JUNICHI;OOKUBO SYUNJI;HASEGAWA TAKAHIRO |
分类号 |
H01J29/48;H01J29/50;(IPC1-7):G09G1/04 |
主分类号 |
H01J29/48 |
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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