Patent ID: 8174645

Claim:
An electronic display device comprising: a display unit for displaying an image; and a light controller in front of the display unit and for creating an optically parallax barrier, wherein the light controller comprises: a polarizing switch for controlling a polarizing direction using an electrical signal, the polarizing switch comprising first and second substrates and having first and second common electrodes corresponding to entire active areas of the first and second substrates, respectively, and facing each other and a liquid crystal layer between the first and second common electrodes; a pattern polarizer for controlling light transmission in cooperation with the polarizing switch, the pattern polarizer having a plurality of polarizing portions and a plurality of non-polarizing portions alternately arranged in a first direction, wherein centers of the polarizing portions and the non-polarizing portions are arranged in a zigzag pattern in a second direction substantially perpendicular to the first direction, and wherein at least one of the polarizing portions of the zigzag pattern is wider than at least one of the non-polarizing portions of the zigzag pattern, such that the polarizing portions in two adjacent rows along the second direction partially overlap with each other in the second direction; and a polarizing plate located between the display unit, and the polarizing switch and the pattern polarizer, wherein the display unit is selected from the group consisting of an organic light emitting display panel, a cathode ray tube, a plasma display panel, and a field emission display panel.