Electronic device and method for controlling light-emitting elements of display

A wearable device comprising:

• a display including a driving layer including a substrate and an emission layer on the driving layer, the emission layer including a plurality of light-emitting elements, each of the light-emitting elements comprising a diode or sub-pixel;
• and
• a processor comprising processing circuitry,
• wherein the display is configured to:
• receive from the processor a signal indicating a first mode or a second mode for a low-power different from the first mode,
• sequentially emit, in the first mode identified based on the signal, a plurality of lines including a first line of the display and a second line continuous with the first line, wherein light-emitting elements included in each of the plurality of lines emit during a first time period, and
• emit, in the second mode identified based on the signal, a portion of light-emitting elements among light-emitting elements in the first line during the first time period, and the portion of light-emitting elements in the first line during a second time period extended from the first time period during which the portion of light-emitting elements in the first line emits using the second line connected to the first line.