Organic light emitting display device

An organic light emitting display device comprising:

• a display panel comprising:
• a plurality of pixels;
• a red color high power voltage line configured to provide a red color high power voltage to the pixels;
• a green color high power voltage line configured to provide a green color high power voltage to the pixels;
• a blue color high power voltage line configured to provide a blue color high power voltage to the pixels;
• and
• a low power voltage line configured to provide a low power voltage to the pixels;
• a driving current calculator configured to receive image data provided to the pixels and to respectively calculate an amount of a red color driving current of the image data, an amount of a green color driving current of the image data, and an amount of a blue color driving current of the image data;
• a power supply configured to generate the red color high power voltage, the green color high power voltage, and the blue color high power voltage for which overshoot times are controlled to be within a falling time during which the low power voltage is changed from a first level to a second level or to be within a rising time during which the low power voltage is changed from the second level to the first level;
• a data driver configured to provide a data signal to the pixels;
• a scan driver configured to provide a scan signal to the pixels;
• and
• a timing controller configured to control the power supply, the data driver, and the scan driver.