Holographic display technology with large viewing angle based on liquid crystal spatial light modulator

Holographic display technology can record and reconstruct the wavefront information of the original objects completely, which is considered as the ultimate goal of 3D display. Holographic reconstruction with large viewing angle is one of the key technologies in holographic display. In this paper, several technologies of holographic display with wide viewing angle have been introduced and the technical routes have been discussed by analyzing the principle of the holographic display based on the liquid crystal spatial light modulator. The realization principles, merits and demerits of these existing methods have been analyzed. With the reduction of size of the pixel pitch of liquid crystal spatial light modulators, the improvement of the refresh rate, and the combination of new devices and materials, the wide-viewing-angle holographic display will have new development.