ORGANIC LIGHT EMITTING DIODE DISPLAY AND DRIVING METHOD THEREOF

摘要

PURPOSE: An organic light emitting diode display device and a driving method thereof are provided to reduce power consumption by lowering a low potential driving voltage and raising a high potential driving voltage at a low temperature. CONSTITUTION: A DC-DC converter(126) lowers a level of a high potential driving voltage applied to a first driving voltage supply line and raises the level of a low potential driving voltage applied to a second driving voltage supply line at a temperature range for a low organic light emitting diode driving voltage in comparison with a high temperature. The DC-DC converter raises the level of the high potential driving voltage and lowers the level of the low potential driving voltage at the temperature range for a high organic light emitting diode driving voltage in comparison with the high temperature. A high potential driving voltage generation circuit(127) generates a variable high potential driving voltage corresponding to the changed temperature. A low potential driving voltage generation circuit(128) generates a variable low potential driving voltage corresponding to the changed temperature.