Liquid crystal lens, liquid crystal device and method for driving liquid crystal lens

A liquid crystal device, comprising a liquid crystal lens, wherein

• the liquid crystal lens comprises a first substrate and a second substrate which are opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate;
• wherein
• the first substrate comprises a first base substrate, a plurality of first electrodes disposed on a side of the first base substrate proximal to the second substrate, and a first alignment layer disposed on a side of the first electrodes distal from the first base substrate, wherein two adjacent first electrodes of the plurality of first electrodes are insulated from each other, an orthographic projection of each of the plurality of first electrodes on a first surface is an axisymmetric pattern and a centrosymmetric pattern, and center points of the orthographic projections of the plurality of first electrodes on the first surface are in coincidence with each other, the first surface being a surface, facing the second substrate, of the first substrate, and the plurality of first electrodes comprises odd-numbered electrodes and even-numbered electrodes, the odd-numbered electrodes and the even-numbered electrodes being alternately arranged one after another in a direction pointing to surroundings from a center and by taking the first electrode disposed at the center as an odd-numbered electrode;
• and
• the second substrate comprises a second base substrate, a second electrode disposed on a side of the second base substrate proximal to the first substrate, and a second alignment layer disposed on a side of the second electrode distal from the second base substrate, wherein an orientation of the first alignment layer and an orientation of the second alignment layer are perpendicular to each other;
• wherein in a non-operating state, both the odd-numbered electrodes and even-numbered electrodes of the first electrodes are provided with a first threshold voltage and the second electrode is provided with a common voltage;
• and
• in an operating state, the odd-numbered electrodes are provided with the first threshold voltage, the even-numbered electrodes are provided with a second threshold voltage and the second electrode is provided with the common voltage, the second threshold voltage being greater than the first threshold voltage.

A method for driving a liquid crystal lens, wherein the liquid crystal lens comprises a first substrate and a second substrate which are opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate;

• the first substrate comprises a first base substrate, a plurality of first electrodes disposed on a side of the first base substrate proximal to the second substrate, and a first alignment layer disposed on a side of the first electrodes distal from the first base substrate, wherein two adjacent first electrodes of the plurality of first electrodes are insulated from each other, an orthographic projection of each of the plurality of first electrodes on a first surface is an axisymmetric pattern and a centrosymmetric pattern, and center points of the orthographic projections of the plurality of first electrodes on the first surface are in coincidence with each other, the first surface being a surface, facing the second substrate, of the first substrate;
• the second substrate comprises a second base substrate, a second electrode disposed on a side of the second base substrate proximal to the first substrate, and a second alignment layer disposed on a side of the second electrode distal from the second base substrate, wherein an orientation of the first alignment layer and an orientation of the second alignment layer are perpendicular to each other;
• the method comprising:
• categorizing the plurality of first electrodes into odd-numbered electrodes and even-numbered electrodes in a direction pointing to surroundings from the center, by taking the first electrode disposed at the center as an odd-numbered electrode, the odd-numbered electrodes and the even-numbered electrodes being alternately arranged one after another;
• supplying a first threshold voltage to the first electrodes and a common voltage to the second electrode in response to the liquid crystal lens being in a non-operating state;
• and
• supplying the first threshold voltage to the odd-numbered electrodes, a second threshold voltage to the even-numbered electrodes and a common voltage to the second electrode in response to the liquid crystal lens being in an operating state, the second threshold voltage being greater than the first threshold voltage.