Patent ID: 9520086
Filing Date: 2016-12-13
CPC Classification: G09G

Claim Text:
1. A power voltage generating apparatus for supplying a power voltage to a plurality of pixel circuits of a display apparatus, the power voltage generating apparatus comprising: a high voltage converter to generate a high voltage; a low voltage converter to generate a low voltage; a switching circuit to alternately output the high voltage and the low voltage at a power voltage terminal as the power voltage; and a discharging unit coupled to the power voltage terminal and configured to discharge the power voltage terminal in a discharge period before the switching circuit changes the power voltage from the high voltage to the low voltage, wherein the discharge period comprises a first period in which the discharging unit gradually discharges the high voltage to a discharge voltage at the power voltage terminal, and a second period after the first period in which a voltage of the power voltage terminal is maintained as the discharge voltage.