Display device and method for controlling a grating thereof

A method for controlling a grating in a display device, wherein the display device at least comprises a pixel array and a grating;

• wherein the pixel array comprises a plurality of rows of pixels, each pixel comprises at least one sub-pixel, an odd-numbered row of sub-pixels and a neighboring even-numbered row of sub-pixels are offset in a transverse direction by a preset length which is ½ of a transverse length of the sub-pixels;
• and
• wherein the grating comprises a liquid crystal layer as well as a first substrate and a second substrate at two sides of the liquid crystal layer;
• the first substrate comprises a plurality of electrodes spaced by a predefined distance, each of the electrodes comprises a plurality of segments which are continuous in the longitudinal direction and are offset in a segment-wise manner by a predefined length from an end to the other end of the electrodes, the predefined length being ½ of the transverse length of each segment, and each segment of the electrodes of the first substrate has a transverse length which is larger than a transverse length of the sub-pixels;
• and
• the second substrate comprises a plurality of electrodes, the electrodes of the first substrate and the second substrate are configured to generate an electric field upon application of a voltage to control deflection of liquid crystal molecules in the liquid crystal layer
• wherein the method comprises:
• turning on the grating by applying a same level signal to the electrodes of the second substrate and applying a high level signal or a low level signal alternately to the electrodes of the first substrate, to form light shielding regions and light transmitting regions of the grating, wherein the light shielding regions shield two neighboring sub-pixels which are offset downward row-by-row in the pixel array, the right half region of the left side sub-pixel and the left half region of the right side sub-pixel in each row are shielded, and the light transmitting regions correspond to the left half region of the left side sub-pixel and the right half region of the right side sub-pixel in each row of two neighboring sub-pixels;
• and
• turning off the grating by applying a same level signal to the electrodes of the first substrate and the second substrate.