Moire-free three-dimensional display device

Abstract

The invention discloses a Moire-free three-dimensional display device, sequentially comprising a parallel backlight source, a pixel array, a negative lens array and a grating along a light propagation direction, wherein the parallel backlight source is used for providing parallel backlight for the pixel array; the pixel array comprises a plurality of sub-pixels which are arrayed in a two-dimensional matrix form and is used for displaying a left-eye using image and a right-eye using image; the negative lens array comprises a plurality of negative lenses, each negative lens exactly faces to one sub-pixel along a direction perpendicular to the pixel array and is used for expanding emitting light beams of the sub-pixel exactly facing to the negative lens, and light beam sections positioned on the emitting surfaces of the negative lenses are matched with the sub-pixels; and the grating is used for respectively guiding light of the left-eye using image and the right-eye using image, which is displayed by the pixel array and expanded by the negative lens array, to the left eye and the right eye of a looker. The three-dimensional display device generates no Moire during display, has high definition and good display effect.

Description

technical field [0001] The invention relates to the field of stereoscopic display, in particular to a moiré-free stereoscopic display device. Background technique [0002] In recent years, three-dimensional display technology has developed rapidly and has become a research hotspot. Stereoscopic display technology has important applications in medical, advertising, military, exhibition, games and other fields. The early stereoscopic display technology mainly uses polarized glasses to watch stereoscopic images, while the current mainstream products are mainly naked-eye stereoscopic display devices based on binocular parallax. The main principle of the naked-eye stereoscopic display device is to set a grating in front of the display panel. The grating provides at least two parallax images displayed on the display panel to the left and right eyes of the viewer respectively. Wherein, the grating may be a slit grating or a lenticular grating. [0003] The existing display panel...

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Problems solved by technology

[0004] Some methods for eliminating moiré fringes have also been proposed in the prior art, such as a scheme for eliminating moiré fringes by destroying the light field of the grating structure proposed in the document of Chinese Patent Publication No. CN101000406A. In this scheme, by Increase the diffusion screen or coat the anti-reflection coating on the surface of the grating to eliminate moiré, but in this solution, the diffusion screen or the anti-reflection coating will reduce the transmittance of the image light displayed on the display panel and cause some distortion of the 3D image, so , so the solution to eliminate moiré fringes is not ideal

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