| 摘要 |
PURPOSE: To extend the range of driving voltage and to boost the voltage by setting up the frequency of pulselike voltage impressed to scanning electrodes in a hold state to a level higher than the frequency of an address state. CONSTITUTION: In an address state of one scanning period, the same pulse-like voltage as that of a non-data period is impressed in the initial several pulses of the address state even when data exist or a period (a) for executing display in the address state and a period (b) for executing display in a hold state are included in one scanning period. A period (c) for impressing the same pulse-like voltage as that of the non-data period as initial partial pulselike voltage independently of the existence of data is included in the address state. The frequency of pulselike voltage impressed to scanning electrodes in the hold state is set up to a level higher than at least the frequency of the address state to drive the scanning electrodes. Consequently the range of driving voltage can be improved and the voltage can be boosted. |
