Display apparatus having liquid crystal grating, method for controlling display apparatus, and holographic 3D display screen

A method for controlling a display apparatus, being used for controlling a display apparatus, wherein the display apparatus comprises a display module and an adjustment module;

• the display module comprises a deflection device configured to make an image move at least in a first direction, and the deflection device comprises a liquid crystal grating (LCG);
• and the adjustment module comprises an actuation device, and the actuation device is configured to move or rotate the display module to make the image move at least in a second direction;
• wherein the method comprises:
• controlling the deflection device to make the image move at least in the first direction;
• and
• controlling the actuation device to make the image move at least in the second direction by moving or rotating the display module;
• wherein the first direction is same as or different from the second direction;
• the first direction and the second direction each are parallel to the first plane, and the first plane is parallel to the plane where the deflection device is disposed.

A holographic three-dimensional (3D) display screen, comprising a display apparatus;

• wherein the display apparatus comprises a display module and an adjustment module;
• the display module comprises a deflection device configured to make an image move at least in a first direction, and the deflection device comprises a liquid crystal grating (LCG);
• and the adjustment module comprises an actuation device, and the actuation device is configured to move or rotate the display module to make the image move at least in a second direction;
• wherein the first direction is same as or different from the second direction;
• the first direction and the second direction each are parallel to a first plane, and the first plane is parallel to a plane where the deflection device is disposed.