An electronic display device having viewing-angle adjusting and stereoscopic-image displaying functions. The display device includes a display unit for displaying an image and a liquid crystal barrier disposed in front of the display unit. The barrier includes: first and second substrates facing each other; a liquid crystal layer disposed between the first and second substrates; and a first controller for controlling light transmission, the first controller being disposed at the first substrate facing the liquid crystal layer and including first electrodes spaced apart from each other by an interval along a first direction of the liquid crystal barrier, second electrodes arranged between the first electrodes along the first direction, and a third electrode insulated from the first and second electrodes; and a second controller for adjusting a viewing angle, the second controller being disposed at the second substrate facing the liquid crystal layer and including one or more electrodes.