Stereoscopic display device

A stereoscopic display device comprising:

• a display panel for displaying an image with a plurality of pixels;
• a switch liquid crystal panel that is arranged so as to be stacked on the display panel;
• a position sensor for acquiring position information of a viewer;
• and
• a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with the position information, with use of a predetermined barrier switching pitch as a minimum unit, and causing the switch liquid crystal panel to display the parallax barrier, wherein
• the plurality of pixels have openings each of which has a width A in the alignment direction, the width A satisfying the following expressions:
• A≤Wsl−2Pe, and
• A≤Wbr−2Pe
• where Wsl is a width of the transmitting region, Wbr is a width of the non-transmitting region, and Pe is the barrier switching pitch,
• the switch liquid crystal panel includes:
• a liquid crystal layer;
• a first substrate and a second substrate that are opposed to each other with the liquid crystal layer being interposed therebetween;
• and
• a first electrode group that is defined on the first substrate, and includes a plurality of electrodes that are arranged in the alignment direction, the plurality of electrodes having a width equal to each other.