Electronic device and method for controlling refresh rate of display

A display device comprising:

• a display panel;
• and
• a display driver integrated circuit including a driver circuit electrically connected to the display panel,
• wherein the driver circuit comprises:
• a driver electrically connected to the display panel;
• a first synchronization module configured to synchronize a signal transmitted to the driver circuit according to a first refresh rate for a first area of the display panel;
• and
• a second synchronization module configured to synchronize a signal transmitted to the driver circuit according to a second refresh rate for a second area of the display panel.

An operation method of an electronic device, the method comprising:

• based on a user interface displayed on a display of the electronic device, determining a first refresh rate for a first area of the display, and a second refresh rate for a second area of the display;
• and
• transferring a first signal based on the first refresh rate and a second signal based on the second refresh rate to the display to control the display;
• wherein the first signal causes the first area to be refreshed at the first refresh rate, the second signal causes the second area to be refreshed at the second refresh rate.