Method and system for generating directional backlight

Abstract

The invention discloses a method for generating a directional backlight. The method comprises: measuring the periodic angle of a micro-cylindrical lens array; installing the micro-cylindrical lens array on the surface of a liquid crystal display panel and fixing it tightly; The display panel is divided into several areas along the horizontal direction, and all pixels are allocated to the corresponding area according to the relative position of the pixel and each cylindrical prism; an independent coordinate system is established for each area; the width of a single cylindrical prism is used as the interval A brightness control curve is constructed; the brightness control curve is integrated in each pixel width interval, and the integration result is used as the brightness value of the corresponding pixel; the brightness values ​​of all pixels are determined to obtain an LCD image that generates backlight in the current direction. The invention also discloses a directional backlight generating system at the same time. The invention does not need the inclined micro-column lens array, reduces moiré fringes, and greatly improves the directionality, sharpness and control flexibility of the backlight.

Description

technical field [0001] The invention belongs to the field of true three-dimensional display, and in particular relates to a flexible and easy-to-assemble directional backlight generation method and system with continuously variable directions. Background technique [0002] True 3D display technology can provide viewers with different images from different directions. When the directional backlight emits backlight in different directions, the imaging system will display different content, so that the viewers can use it without special glasses within a certain angle range. See the 3D scene. The design of the directional backlight plays a vital role in the three-dimensional display effect, the sharper and the higher the brightness of the backlight, the better the three-dimensional display effect can be obtained. [0003] At present, there are many methods for generating directional backlight, and they are applied in different occasions. Among them, the directional backlight b...

AI Technical Summary

Problems solved by technology

But this method has the following defects: 1. The width 013 of a single cylindrical prism 011 is often set by the manufacturer, and there are only a small amount of fixed specifications, which cannot ensure that a single cylindrical prism is aligned with an integer number of pixels 020. Pixel 021 below the border of the facet prism will cause serious moiré fringes and backlight direction disorder when emitting light

However, the current generation methods of directional backlight cannot meet the above requirements at the same time.

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