An electronic device comprising: a display; a touch sensor configured to sense a touch in at least one point of the display; and a processor, wherein the processor is configured to: control a first portion of the display to be turned on and to display at least one object and control a remaining portion of the display other than the first portion of the display to be turned off by controlling a plurality of first light sources corresponding to respective pixels of the first portion of the display to turn on and a plurality of second light sources corresponding to respective pixels of the remaining portion of the display to turn off; control the touch sensor to be turned off while the first portion of the display is turned on and the remaining portion of the display is turned off; control at least a portion of the touch sensor corresponding to the first portion of the display to be turned on to sense a touch when an event set for the touch sensor to perform touch sensing is detected; control the remaining portion of the display to be turned on such that the first portion and the remaining portion of the display are turned on when a first touch on the first portion of the display is sensed using the at least portion of the touch sensor; and based on an object corresponding to a position of the sensed first touch among the at least one object, display a screen, associated with the object corresponding to the position of the sensed touch, on the first portion and the remaining portion of the display. a display; a touch sensor configured to sense a touch in at least one point of the display; and a processor, wherein the processor is configured to: control a first portion of the display to be turned on and to display at least one object and control a remaining portion of the display other than the first portion of the display to be turned off by controlling a plurality of first light sources corresponding to respective pixels of the first portion of the display to turn on and a plurality of second light sources corresponding to respective pixels of the remaining portion of the display to turn off; control the touch sensor to be turned off while the first portion of the display is turned on and the remaining portion of the display is turned off; control at least a portion of the touch sensor corresponding to the first portion of the display to be turned on to sense a touch when an event set for the touch sensor to perform touch sensing is detected; control the remaining portion of the display to be turned on such that the first portion and the remaining portion of the display are turned on when a first touch on the first portion of the display is sensed using the at least portion of the touch sensor; and based on an object corresponding to a position of the sensed first touch among the at least one object, display a screen, associated with the object corresponding to the position of the sensed touch, on the first portion and the remaining portion of the display. control a first portion of the display to be turned on and to display at least one object and control a remaining portion of the display other than the first portion of the display to be turned off by controlling a plurality of first light sources corresponding to respective pixels of the first portion of the display to turn on and a plurality of second light sources corresponding to respective pixels of the remaining portion of the display to turn off; control the touch sensor to be turned off while the first portion of the display is turned on and the remaining portion of the display is turned off; control at least a portion of the touch sensor corresponding to the first portion of the display to be turned on to sense a touch when an event set for the touch sensor to perform touch sensing is detected; control the remaining portion of the display to be turned on such that the first portion and the remaining portion of the display are turned on when a first touch on the first portion of the display is sensed using the at least portion of the touch sensor; and based on an object corresponding to a position of the sensed first touch among the at least one object, display a screen, associated with the object corresponding to the position of the sensed touch, on the first portion and the remaining portion of the display.