Double-layer liquid crystal lens apparatus

A double-layer liquid crystal lens apparatus, comprising:

• a first electrode device comprising a first substrate, at least a first active device, a first electrode, and a first alignment layer, the first active device, the first electrode, and the first alignment layer are disposed on the first substrate, the first active device is electrically connected to the first electrode, and the first electrode has a first opening;
• a second electrode device comprising a second substrate, at least a second active device, a second electrode, and a second alignment layer, the second active device, the second electrode, and the second alignment layer are disposed on the second substrate, the second active device is electrically connected to the second electrode, and the second electrode has a second opening corresponding to the first opening;
• a third electrode device disposed between the first electrode device and the second electrode device, the third electrode device comprising a third substrate, a common electrode, a third alignment layer, and a fourth alignment layer, the common electrode, the third alignment layer, and the fourth alignment layer are disposed on the third substrate, the third alignment layer and the fourth alignment layer are respectively disposed on different sides of the third substrate, and the common electrode is disposed between the third alignment layer and the third substrate;
• and
• two liquid crystal layers respectively disposed between the first electrode device and the third electrode device and between the second electrode device and the third electrode device, the first alignment layer and the third alignment layer aligning one of the liquid crystal layers, and the second alignment layer and the fourth alignment layer aligning another one of the liquid crystal layers.