Holographic display device and holographic display method

A holographic display device, comprising:

• a display panel, comprising a plurality of sub-pixels, wherein each of the plurality of sub-pixels comprises a plurality of subdivided pixels, and each of the plurality of subdivided pixels has an adjustable light transmittance;
• a backlight, provided at a light incident side of the display panel, and configured to provide reference light to the display panel;
• a phase adjustment layer, comprising a plurality of phase adjustment components which are transparent, wherein positions of the plurality of phase adjustment components are in one-to-one correspondence with positions of the plurality of subdivided pixels, each of the plurality of phase adjustment components is configured to adjust a phase of a light ray transmitted through the phase adjustment component, and the phase adjustment components corresponding to a single sub-pixel have phase adjustment amounts different from each other;
• and
• a controller, configured to obtain a target phase of a light ray to be transmitted through each of the plurality of sub-pixels of the display panel according to a position information of a to-be-displayed stereoscopic image and determine a target subdivided pixel, which corresponds to the target phase, in each of the plurality of sub-pixels, and the controller being further configured to obtain a target intensity of the light ray to be transmitted through each of the plurality of sub-pixels according to image information of the to-be-displayed stereoscopic image, and adjust a light transmittance of the target subdivided pixel in each of the plurality of sub-pixels according to the target intensity.