A Novel Pixel Structure for Dynamic Display of 3D Light Field

Abstract

The invention discloses a novel pixel structure for three-dimensional light field dynamic display, which includes: a first substrate, a second substrate opposite to the first substrate, a first electrode layer arranged on the first substrate, and a first electrode layer arranged on the second substrate. The spacer between an electrode layer and the second substrate, the liquid crystal layer filled between the first electrode layer and the second substrate, the multilevel grating structure arranged on the second substrate and the multilevel grating structure arranged on the second substrate and the multilevel The second electrode layer at the position corresponding to each level of grating in the grating structure. By controlling the voltage corresponding to each level of grating, the large-angle continuous modulation of the outgoing light emission direction can be realized; through the method of time division multiplexing, the intensity modulation of the outgoing light in different directions can be realized. The invention overcomes the problems of small viewing angle, discontinuous reconstructed light field, complex structure and difficult integration in the prior art.

Description

technical field [0001] The invention relates to the field of three-dimensional light field dynamic display, in particular to a novel pixel structure for three-dimensional dynamic display. Background technique [0002] The dynamic display of three-dimensional light field realizes the function of dynamic three-dimensional display by controlling the intensity of light emitted in different directions to reconstruct the spatial angular spectrum information of the light field. The existing technologies mainly include: light field display using projection system to reconstruct multi-viewpoint information, light field display using integrated holographic technology, light field display using directional backlight and light field display using acousto-optic modulator. [0003] The light field display reconstructed using the projection system uses multiple projections to project the corresponding angle information in different directions (article "A scalable hardware and software syst...

AI Technical Summary

Problems solved by technology

The advantage of the projection system is that the projection technology is mature, the realization is simple, and the viewing angle is generally large; the disadvantage is that the optical path of the system is complicated, it is difficult to reduce and simplify, and the reconstructed field of view is discontinuous

Light field display using integrated holographic technology (article "Holographic three-dimensional telepresence using large-area photorefractive polymer." Blanche, P-A., et al. Nature468.7320(2010):80-83.), after controlling the microlens array The intensity of sub-pixels at the focal plane controls the intensity of outgoing light in different directions; the advantage is that the structure and optical path are simple, and it is easy to integrate; the disadvantage is that it is limited by the manufacturing size of the microlens array and the number of sub-pixels, and the display viewing angle is relatively small (10 degrees), Reconstructed field of view discontinuity

Light field display using directional backlight (Article "Amulti-directional backlight for a wide-angle, glasses-free three-dimensional display." Fattal, David, et al. Nature495.7441(2013):348-351.) via Sub-pixel (spatial multiplexing) technology controls the intensity of outgoing light under different gratings to reconstruct the spatial angular spectrum information of the light field. The advantage is that the system is highly integrated; the disadvantage is that the reconstructed field of view is discontinuous and the number of fields of view is small

Three-dimensional light-field display using an acousto-optic modulator (article "Anisotropic leaky-mode modulator for holographic video displays.", Smalley, D.E., et al. Nature498.7454(2013):313-317.) Via sound waves in piezoelectric materials The dynamic propagation grating of different periods is formed in the center, and the light is coupled to different directions; the advantage is that the reconstructed light field is continuous and the viewing angle is large; the disadvantage is that a more complex optical path is required to staticize the propagation grating, and it is difficult to integrate into a large-area display device

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