发明名称 |
Electron-beam generating device having a plurality of cold cathode elements, method of driving said device and image forming apparatus applying same |
摘要 |
A method and apparatus for driving an electron source in which a high-quality image display is presented by correcting a non-uniform effective current distribution caused in cold cathode elements by leakage current. A digital video signal enters a shift register where a serial-to-parallel conversion is made for each line of an image based upon a shift clock signal. One line of the image data that has been subjected to the serial-to-parallel conversion is latched in a latch circuit and then applied to a voltage modulating circuit. The latter voltage-modulates the input data and sends the modulated signal to a voltage/current converting circuit. The latter converts the voltage quantity to a current quantity, which is applied to each of the cold cathode elements of a display panel through respective column terminals. A voltage V1 is applied to the selected row wire, and a voltage V2 (V2<> V1) is applied to all other row wires, for controlling the leakage current.
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申请公布号 |
US6445367(B1) |
申请公布日期 |
2002.09.03 |
申请号 |
US19950489391 |
申请日期 |
1995.06.12 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SUZUKI NORITAKE;SUZUKI HIDETOSHI;SAKAI KUNIHIRO;OGUCHI TAKAHIRO |
分类号 |
H01J1/316;G09G3/20;G09G3/22;G09G3/30;H01J1/30;H01J1/304;H01J1/312;H01J31/12;(IPC1-7):G09G3/22 |
主分类号 |
H01J1/316 |
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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