The liquid crystal lens is formed by placing a TN type liquid crystal with a twist angle of 90 degrees between the first and second substrates. A first substrate having a flat surface with a slit is formed on the liquid crystal side of the first substrate, and a second electrode having a comb electrode, as seen in a plane view, is formed on the liquid crystal side of the second substrate. The slit formed in the first electrode extends in the same direction as the comb electrode of the second electrode, and the slit is located in the center between the comb electrodes of the second electrodes as seen in a plane view, to prevent the electric lines of force, moving from directly above the second electrode to the first electrode, from spreading in the plan direction, thereby preventing light leakage directly above the second electrode.