The virtual-real fusion spatial transparent display is a leading and unreported spatial display mode based on transparent nano light field screen. Flat transparent light field screen can image in the depth space to achieve the fusion of "physical space" and "virtual display". The core element of the transparent nano light field screen is based on the large-size functional nano-scale light control unit to realize the precise optical spread modulation of the light field in the transparent waveguide and the color imaging in space, sequentially. The core technologies include large-size nanolithography, large-size high-fidelity nanoimprint, and high display performance metastructure simulation. Compared with the traditional flat display, the virtual-real fusion spatial transparent display has not only the morphological characteristics of the flat display, but also the display size of more than 100 inches brought by the remote virtual imaging. It can be used in exhibition, smart city, education, entertainment, vehicle display, consumer display, etc., and will be a new display method with the diversification, wisdom, and virtual-real interaction.
