Patent ID: 8823695

Claim:
A barrier device for a 3D display, comprising: an upper substrate comprising a first substrate and a first electrode, a first insulation layer and a plurality of first stripe electrodes sequentially formed on the first substrate, wherein the first electrode is made of a whole piece of electrode; the first stripe electrodes are arranged in parallel along a first direction; and the first insulation layer is used for electrically insulating the first electrode and the first stripe electrodes; a lower substrate facing the upper substrate, and comprising a second substrate and a second electrode, a second insulation layer and a plurality of second stripe electrodes sequentially formed on the second substrate, wherein the second electrode is made of a whole piece of electrode; the second stripe electrodes are arranged in parallel along a second direction perpendicular to the first direction; and the second insulation layer is used for electrically insulating the second electrode and the second stripe electrodes; a liquid crystal layer sandwiched between the upper substrate and the lower substrate; and a controller for providing a first voltage and a second voltage, wherein when the first voltage is provided to the first stripe electrodes, the controller simultaneously provides the second voltage to the first electrode, the second electrode and the second stripe electrodes; and when the first voltage is provided to the second stripe electrodes, the controller simultaneously provides the second voltage to the first electrode, the second electrode and the first stripe electrodes.