Current comparison circuit, display device and driving method thereof

A display device comprising:

• a gate driver configured to sequentially output a plurality of scan signals;
• a data driver configured to output data signals in synchronization with each of the scan signals;
• a power source configured to supply a plurality of power supply voltages for powering a digital portion and an analog portion of the display device through respective power supplying paths;
• a current comparison circuit comprising a plurality of comparator circuits, each configured to compare a respective current on a respective one of the power supplying paths with a respective reference value and to output a respective comparison value, wherein a combination of the respective comparison values output by the plurality of comparator circuits is indicative of a type of content being displayed by the display device;
• and
• a timing controller configured to control the gate driver and the data driver to operate at different refresh rates in response to different combinations of the respective comparison values output by the comparator circuits.

A method of driving a display device, the display device comprising a gate driver, a data driver, a power source configured to supply power to a digital portion and an analog portion of the display device through respective power supplying paths, a current comparison circuit, and a timing controller, the method comprising:

• comparing, by the current comparison circuit, currents on respective ones of the power supplying paths with respective reference values;
• outputting, by the current comparison circuit, respective comparison values in response to the comparing;
• and
• controlling, by the timing controller, the gate driver and the data driver to operate at different refresh rates in response to different combinations of the respective comparison values.