Patent ID: 8395572

Claim:
An electronic display device, comprising: a display unit that displays images; a barrier unit, between the display unit and a viewer, the barrier unit configured to interchangeably provide images to a user as one of two-dimensional images and stereoscopic images through at least one of a light transmitting unit and a light shielding unit, wherein the barrier unit includes: first electrodes and second electrodes alternately arranged on a first surface, the first electrodes being spaced apart from adjacent ones of the second electrodes by first gaps; auxiliary electrodes on a second surface, the auxiliary electrodes corresponding to the first gaps, respectively, and the auxiliary electrodes being configured to be driven in synchronization with each of the two-dimensional images and the stereoscopic images such that when the auxiliary electrodes are driven in synchronization with the stereoscopic images one light shielding unit corresponds to areas including two adjacent auxiliary electrodes and an entirety of an area between the two adjacent auxiliary electrodes; a common electrode on a third surface; and a liquid crystal layer between the common electrode and the first, second, and auxiliary electrodes; and a barrier driver configured to control the barrier unit in accordance with whether two-dimensional images or stereoscopic images are to be displayed.