Patent ID: 8564755

Claim:
A liquid crystal lens, comprising: a pair of electrode structures functioned to generate a first electric field and a second electric field; and a liquid crystal layer arranged between the pair of electrode structures and comprising a plurality of liquid crystal molecules aligned in an initial aligning direction, wherein the second electric field has a field direction which is at least partially parallel to the initial aligning direction, so that the liquid crystal molecules rapidly revert to the initial aligning direction under the second electric field; wherein the first electric field changes aligning directions of the liquid crystal molecules to make the liquid crystal layer have a lens effect; and the second electric field promotes the liquid crystal molecules substantially back to the initial aligning direction having no-lens effect; wherein the pair of electrode structures comprise a first electrode structure and a second electrode structure, the first electrode structure comprises a plurality of first strip electrodes which are arranged apart from each other and extend in a first extending direction, and the second electrode structure comprises a plurality of second strip electrodes which are arranged apart from each other and extend in a second extending direction which is parallel to the first extending direction.