发明名称 |
Cathode-ray tube apparatus |
摘要 |
A prefocus lens section is formed by a screen electrode and an additional electrode. A main lens section is formed by a focus electrode, an anode electrode and an intermediate electrode that is disposed between the focus electrode and the anode electrode. Each of the focus electrode and the intermediate electrode has a cylindrical electrode on at least one of opposed faces thereof. The intermediate electrode and the anode electrode have cylindrical electrodes on opposed faces thereof. A voltage with a level higher than a focus voltage and lower than an anode voltage is applied to the additional electrode and the intermediate electrode.
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申请公布号 |
US7122977(B2) |
申请公布日期 |
2006.10.17 |
申请号 |
US20040845452 |
申请日期 |
2004.05.14 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
UENO HIROFUMI;TAKEKAWA TSUTOMU |
分类号 |
G09G1/04;H01J29/48;H01J29/50 |
主分类号 |
G09G1/04 |
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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