Three Dimensional Display and Lens Therein

A lens, comprising:

• a first substrate comprising:
• a first electrode layer comprising a plurality of first electrodes each having a first virtual normal center line;
• an insulation layer formed on the first electrode layer;
• a second electrode layer comprising a plurality of second electrodes formed on the insulation layer, each of the second electrodes having a second virtual normal center line, wherein the second electrodes separately overlap the first electrodes and one of the second electrodes shifts relatively to the corresponding first electrode toward a first direction;
• and
• a first alignment layer formed on the second electrode layer and having a first rubbing direction, wherein the first rubbing direction of the first alignment layer is opposite to the first direction;
• a second substrate comprising a common electrode;
• and
• a medium layer disposed between the first substrate and the second substrate.