Patent ID: 6366065
Filing Date: 2002-04-02
Classification: G09G

Abstract:
A voltage supplying device which supplies a voltage to a load capacitance to finish charging the load capacitance with a predetermined voltage within a predetermined charging period, the voltage supplying device comprising:a voltage supplying source; an impedance conversion circuit which performs impedance conversion for a voltage from the voltage supplying source and outputs the converted voltage; a first switching element connected between the impedance conversion circuit and the load capacitance; a bypass line for bypassing the impedance conversion circuit and the first switching element and supplying a voltage from the voltage supplying source to the load capacitance; and a second switching element provided on the bypass line, wherein the first switching element is turned on and the second switching element is turned off in the first period of the charging period; and wherein the first switching element is turned off and the second switching element is turned on in the second period of the charging period which follows after the first period.