Method for operating electronic device and electronic device for supporting the same

A display module comprising:

• a display panel;
• and
• a display driving circuit configured to:
• obtain, at a first speed, a first image data corresponding to a screen image from a processor external to the display module;
• obtain, at a second speed lower than the first speed, second image data from an electronic component external to the display module and other than the processor;
• generate a clock signal;
• generate a merged screen image using the first image data and the second image data based at least in part on the clock signal;
• and
• output the merged screen image via the display panel instead of the screen image, at least temporarily.

A portable communication device comprising:

• a first chip;
• a second chip;
• a display panel;
• and
• a display driving circuit configured to:
• obtain, at a first speed, first image data corresponding to a screen image from the first chip;
• obtain, at a second speed different from the first speed, second image data from the second chip;
• generate a clock signal;
• generate a merged screen image using the first image data and the second image data based at least in part on the clock signal;
• and
• output the merged screen image via the display panel instead of the screen image, at least temporarily.