POWER CIRCUIT FOR DISPLAY DRIVER FOR IMPROVING THE PRODUCTIVITY AND COMPATIBILITY OF A DISPLAY DRIVER

摘要

PURPOSE: A power circuit for display driver is provided to generate a source voltage by selectively using a capacitive DC-DC converter or an inductive DC-DC converter or an external power supply according to the amount of current flowing through a display panel.;CONSTITUTION: A positive voltage generation part(100) includes a first capacitive DC-DC converter(124) and a first inductive DC-DC converter(144). The positive voltage generation part generates a positive source voltage by selectively using the first capacitive DC-DC converter, the first inductiveness DC-DC converter, or a first external power voltage. A negative voltage generation part(200) includes a second capacitive DC-DC converter and a second inductive DC-DC converter. The negative voltage generation part generates a negative source voltage by using the second capacitive DC-DC converter, the second inductive DC-DC converter, or second external power voltage.;COPYRIGHT KIPO 2013