Patent ID: 8035794

Claim:
A double-layer liquid crystal lens, comprising: a first transparent substrate, having one side provided with a first transparent ITO electrode and a first alignment film disposed on said transparent electrode; a second transparent substrate, having one side provided with a second alignment film and the other side provided with a third alignment film; the side of said second transparent substrate provided with said second alignment film facing the side of said first transparent substrate provided with said first alignment film, an alignment direction of said first alignment film being parallel to an alignment direction of second alignment film; a third transparent substrate, having one side provided with an apertured electrode and the other side provided with a fourth alignment film; the side of said third transparent substrate provided with said fourth alignment film facing the side of said second transparent substrate provided with said third alignment film, an alignment direction of said third alignment film being parallel to an alignment direction of said fourth alignment film and being perpendicular to the alignment direction of said first and second alignment films; a first liquid crystal layer, which is interposed between said first transparent substrate and said second transparent substrate, and is surrounded by a first frame; and a second liquid crystal layer, which is interposed between said second transparent substrate and said third transparent substrate and is surrounded by a second frame; wherein said first transparent substrate and said third transparent substrate are made of glass while said second transparent substrate is made of plastic material.