DRIVING CIRCUIT FOR DISPLAY PANEL

摘要

PURPOSE: To provide the driving circuit of a display panel which is simply constituted by using inexpensive parts, whose operational rising is fast and which is capable of stably recovering electric charges. CONSTITUTION: This circuit includes a charging and discharging circuit part 2 generating pulses to be impressed on electrodes of display panel by being connected to them and generating resonance currents at the time of charging and discharging of inter-panel-and-electrode capacitance parts 1 by being equivalently connected in series to the inter-panel-and-electrode parts 1 regarding to these electrodes and a voltage clamping part 3 consisting of the FET switching element 5 for a power source holding these electrodes at a constant voltage by being connected to electrodes of the display panel and the FET switching element 7 for a grounding. Moreover, the value of the static capacitance of a capacitor 12 for a power recovery recovering reactive powers at the time of charging and discharging of the inter-panel-and electrode capacitance parts 1 in the charging and discharging circuit part 2 is made to be in the range of 1 to 3 times value with respect to the sum total value of the static capacitances of the inter-panel-and-electrode parts 1 and the static capacitance of the voltage clamping part 3.