Liquid crystal lens, display device and driving method therefor

A liquid crystal lens, comprising:

• a first substrate;
• a second substrate arranged opposite to the first substrate;
• a liquid crystal layer located between the first substrate and the second substrate and comprising a plurality of liquid crystal lens units;
• a first electrode located on a side of the first substrate facing the liquid crystal layer, the first electrode comprising a plurality of independent sub-electrodes, wherein each of the liquid crystal lens units corresponds to an identical number of the sub-electrodes, and there is a sub-electrode at an adjacent position between adjacent liquid crystal lens units;
• a second electrode located on a side of the second substrate facing the liquid crystal layer, the second electrode being a planar electrode;
• wherein the first electrode and the second electrode are configured to form an electric field to drive a liquid crystal molecule of the liquid crystal layer to rotate and adjust a curvature of the liquid crystal lens unit;
• a first planarization layer located on a side of the first electrode facing the liquid crystal layer, wherein the first planarization layer is configured to smooth an intensity variation curve of the electric field of the liquid crystal lens unit;
• and
• a light-shielding layer located between the first substrate and the second substrate, wherein an orthographic projection of the light-shielding layer on the first substrate covers an orthographic projection of the sub-electrode at the adjacent position between the adjacent liquid crystal lens units on the first substrate.