Glasses-free three-dimensional display device based on active light-emitting display technology

Abstract

The invention discloses a naked eye three-dimensional display device based on an active emitting type display technology. The device comprises an active emitting display unit, wherein the display unit comprises an emitting array adjustable in light strength, and according to multi-visual-angle superposed images, the emitting array modulates a light field amplitude through a circuit control system; and a directive phase plate, wherein the pixels of the directive phase plate contains nano-grating pixel structures which are respectively corresponding to sub-pixels of the visual-angle images, the nano-grating pixel structures contains nano-grating combinations which are designed according to a holographic principle, the nano-grating pixel structures carry out wavefront conversion on incident visual-angle images after light emitted by the active emitting display unit is irradiated to the directive phase plate, and a convergence viewpoint of parallel illumination light is formed in the space in front of or at the side surface of the active emitting display unit. Compared with the prior art, the demands of personal consumption electronic markets and industrial and outdoor display markets are simultaneously met, and naked eye three-dimensional display which is ultra-thin, convenient, large in area, high in brightness and low in cost is realized.

Description

technical field [0001] The invention relates to a display device, in particular to a naked-eye three-dimensional display device based on active light-emitting display technology. Background technique [0002] Active light-emitting display devices have self-illumination and do not require a backlight source. They are considered to be the next-generation flat-panel display emerging application technology, including LED display technology and OLED display technology. [0003] The LED display screen is composed of LED dot matrix, and the image is displayed by turning on and off the red, blue and green LED lights. A traditional LED display is usually composed of a display module, a control system and a power supply system. The display module is composed of a dot matrix of LED lights, which is responsible for luminous display; the control system can display text, pictures, videos and other content on the screen by controlling the corresponding areas to turn on and off. The reaso...

AI Technical Summary

Problems solved by technology

In this technology, although the amplitude modulation method of LED side lighting has the advantage of small size, it is difficult to process, high in cost, demanding in installation accuracy, and difficult to achieve uniform lighting.

[0010] Chinese patent 2015107780865 discloses a directional color filter and a naked-eye 3D display device. It is proposed that laser projection can be used to achieve high-brightness and uniform lighting of the directional light field. However, the lighting system is large and difficult to integrate and difficult to realize. ultra thin display

However, the design accuracy of the directional light guide plate is demanding, the production is difficult, the processing cost is high, and it is difficult to achieve industrialized mass production. At the same time, this method is not suitable for large-format 3D display methods.

In the field of large-format and high-brightness 3D display, people have designed a 3D display solution based on laser projection and scanning display technology, but this method is difficult to achieve the integration and ultra-thinness of the display screen

At the same time, laser display technology has not yet matured, and the cost is relatively high

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