DISPLAY DEVICE AND DRIVING METHOD THEREOF

摘要

PURPOSE: A display device and a driving method thereof are provided to correct a first driving voltage and a second driving voltage, which are supplied to a gamma voltage generation part, according to the change of a first source voltage outputted from a direct current to direct current (DC-DC) converter, thereby efficiently removing brightness variation. CONSTITUTION: A DC-DC converter is prepared at the outside of a display module and supplies a first source voltage and a second source voltage to the display module. The display module includes a gamma voltage generation part (340) and a driving voltage variation part (300). The gamma voltage generation part generates multiple gamma voltages from a first driving voltage and a second driving voltage. The driving voltage variation part corrects the first driving voltage and the second driving voltage in response to the change of the first source voltage. [Reference numerals] (310) Voltage deviation calculation part; (320) First voltage deviation correcting part; (330) Second voltage deviation correcting part; (340) Gamma voltage generation part; (350) Data signal generation part