Provided is a method of performing a half-shutter function using optical object recognition, the method including: displaying a shutter button on a display panel by driving a portion of a plurality of light sources included in the display panel, the portion of the plurality of light sources being disposed corresponding to an object recognition window of the display panel; obtaining a first image based on reflected light received by an object recognition sensor through the object recognition window while driving the portion of the plurality of light sources; determining whether the first image includes a first object, the first object having a half-shutter state; and based on a determination that the first image includes the first object having the half-shutter state, performing a half-shutter process.