Patent ID: 7911548
Filing Date: 2011-03-22
Classification: G02B,G02F

Abstract:
1. An electrically-driven liquid crystal lens comprising: first and second substrates arranged opposite each other and each defining a plurality of lens regions to correspond with each other; a plurality of first electrodes formed in one direction on the first substrate based on the lens region and spaced apart from one another; a second electrode formed over the entire surface of the second substrate; a liquid crystal layer filled between the first substrate and the second substrate; first and second voltage sources to apply different voltages to the plurality of first electrodes in each lens region, the first and second voltage sources providing the liquid crystal layer between the first and second substrates with a convex lens optical path difference and a concave lens optical path difference, respectively, with respect to each lens region; a selector to select any one of the first and second voltage sources so as to apply voltages to the first electrodes; a controller to control the selector which selects any one of the first and second voltage source; and metal lines provided at an edge region of the first substrate, to come into contact with the respective first electrodes per a lens region, wherein the metal lines are connected with the selector.