A display panel displays a first image during a first subframe and a second image during a second subframe. A display panel driver provides the first and second images to the display panel. A light source part provides light to the display panel. A light converting element is disposed between the display panel and the light source part and includes a barrier part and a lens part disposed on the barrier part. The barrier part has a plurality of independently controllable barrier groups. A position detecting part determines a position of a viewer. A barrier driver controls the barrier part to selectively transmit light from the light source part based on the viewer's position. A single barrier group includes a plurality of barriers, and a single barrier includes a plurality of sub-barriers.