Curved grating and curved display device

Abstract

The invention discloses a curved surface grating and a curved surface display unit, which comprises multiple grating periods, each grating period comprises opening area in the middle and shading area in the both sides; The width of the grating cycle which is on the both sides of the center line of the surface grating and equal to the distance to the center line is equal; the width of the grating period decreases in equal interval with the increasing distance between the grating period and the center line, the opening area width decreases in equal interval with the increasing distance between the grating period and the center line. The width of the grating and the width of the opening area are increased in equal interval with the decreasing distance to the center line, So that each pixel unit penetrates the edge of the corresponding grating period opening area, the rhombic viewing area extends to both sides on vertex in the direction of the vertical to curved grating, thus, the viewer has a wider viewing space in that direction.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a curved grating and a curved display device. Background technique [0002] Glasses-free 3D (Three-dimensional) display has become a research hotspot in the display field at this stage because it does not require the viewer to wear glasses and other auxiliary equipment to watch 3D images. At present, there are three ways to realize naked-eye 3D displays: slit grating, cylindrical prism and pointing light source. Grating-type 3D display devices are relatively simple to process and low in cost, so they are widely used. [0003] In order to reduce the crosstalk between the pictures of different viewpoints, the naked-eye 3D display technology can generally adopt a curved grating structure, such as figure 1 As shown, the commonly used curved grating includes multiple grating periods, and each grating period has an opening area and a light shielding area, such as figure 1 As shown,...

AI Technical Summary

Problems solved by technology

like figure 2 As shown, the existing curved grating structure forms a periodically distributed diamond-shaped optimal viewing area in space, and the observer needs to place both eyes in the optimal viewing area to obtain the best 3D viewing experience. The viewing effect will not be affected when moving inside the area. When the viewer moves back and forth and leaves this area, the best viewing experience will be lost

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