A method and system for displaying image data on a video-mode display panel is provided. Instead of continuously refreshing the entire display panel, the display panel may be divided into a first frame region and a second frame region. Each frame region may be associated with its own refresh rate. A higher refresh rate can be provided to content such as video playback and scrolling where a higher refresh rate is required for improved user experience and reduce visual artifacts. A lower refresh rate can be provided to other content, thus saving power where higher refresh rate is not required.