| 摘要 |
PURPOSE:To evade the erroneous illumination of a cell by making the positive period of a hold pulse applied to a scanning-side electrode shorter than the negative period. CONSTITUTION:Hold pulses are different in duty ratio and, for example, the positive period of the hold pulses is set about 100nsec while the negative period is set about 300nsec and the pulse voltage is set about 180V. Thus, the positive ('1') period of the hold pulses is made shorter than the negative ('0') period. Consequently, the diffusion of electrons and positive charged particles generated by the discharging of a selected cell is suppressed and the time of the positive state of scanning-side electrodes is short, so the occurrence of new discharging is further suppressed by a discharging delay phenomenon. Consequently, the erroneous illumination of the cell when the intervals of cells are short is precluded.
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