How do 3D screens work?

From the 3D wave screen of the SM Building in South Korea this year, which triggered discussions on the entire network, to the popularity of LED naked-eye 3D curved screens in Chengdu, Chongqing, Guangzhou and other places, these realistic display effects have refreshed the public’s perception of naked-eye 3D display technology. Glasses-free 3D screens from all over the world have been added to the Internet celebrity check-in packages for tourists, becoming a classic case of outdoor advertising, and “naked-eye 3D” has quickly become a hot word in the industry. All the amazing display effects are inseparable from the support of technology. The following will reveal the birth of the miracle.

Chengdu Taikoo Li spacecraft, Guangzhou Beijing Road curved screen and Chongqing Guanyin Bridge giant screen all use the products of National Star RGB Super Division as the core display device

3D LED display case
3D LED display case

How to achieve such a realistic 3D effect?

As we all know, our human brain is an extremely complex nervous system. Anything that the human eye sees is three-dimensional. This is because the two eyeballs of a person pass through a small distance between the human eyes, and what they see is Two pictures with subtle differences, this subtle difference allows the brain to convert the spatial coordinates between objects in the direction in which the line of sight disappears, and we can also use this feeling to distinguish the distance and size of the objects, that is, Three-dimensional sense, that is, the sense of three-dimensional space.

Schematic diagram of binocular parallax producing stereoscopic vision

Usually the basic principle of 3D display, such as 3D movies, is to separate the content for the left and right eyes of the viewer through glasses or other equipment, so that the two glasses can obtain images of the left and right eyes respectively, and finally to What is presented in the mind is the feeling of 3D images.

To achieve the naked-eye 3D effect on the display screen, it is much more difficult in terms of technology and cost than the simple method of wearing 3D glasses in the theater. In fact, most of the current LED large screens to achieve naked-eye 3D LED display use the distance, size, shadow effect and perspective relationship of objects to build a three-dimensional effect in a two-dimensional picture. Just like when we look at sketches, many painters can use pencils to draw three-dimensional images that look like real ones on a plane.

But static 3D and dynamic 3D are definitely not the same, so how to make the plane animation produce 3D effect, this is the next question we have to think about?

Through continuous practice, it is found that as long as the reference object is used well, the 3D effect can be well realized. There is an interesting experiment on the Internet, which is to divide an ordinary picture into several layers by a white line, and then make the animation part “break through” the white line and cover other elements of the layer, so that the parallax of the eyes can be used to form a 3D illusion. The “3D Wave Screen” of the SM Building, which amazes the entire network as soon as it debuts, uses the shadow of the background as a static three-dimensional reference line, so that the moving waves have a feeling of breaking through the screen.

This is not enough. Have you noticed that the 3D screens that have become popular recently are all composed of two surfaces with different angles. The display screen folds the screen 90°, using video material that conforms to the principle of perspective, the left screen shows the left view of the image, and the right screen shows the main view of the image. When people stand in front of the corner and watch, they can see the object at the same time. Side and front, showing a realistic three-dimensional effect.

We have to talk here about the slightly deeper principles of 3D LED display, which will be more conducive to our understanding of the concept of 3D. First imagine such a 3D display device in mind, it can solve the current passive 3D display model. The problem of halving the resolution of the display screen.

In order to achieve the above purpose, we try to invent a technical solution to solve this problem. Here we can provide a 3D display device, including an LED display screen, which also includes a magnetic field device and a signal module. The described magnetic field device is set In front of the light-emitting surface of the display screen, the magnetic field device and the signal module can be directly connected to each other;

When the signal module provides a changing current signal for the magnetic field device, the magnetic field device will generate a changing magnetic field corresponding to the adjacent changing current signal, and the changing frequency of the magnetic field will be synchronized with the refresh frequency of the left and right eyes of the LED display. .

The rotation of the magnetic field reaches the direction of the plane of polarization of the linearly polarized light emitted by the LED display screen, so that the direction of the plane of polarization of the linearly polarized light after the rotation is parallel to the direction of the plane of polarization of the linearly polarized light before the rotation and perpendicular to the direction of the plane of polarization of the linearly polarized light before the rotation. Switching back and forth between the orientations of the plane of polarization of linearly polarized light.

circuit diagram
circuit diagram

On the other hand, a working method of a 3D display device is provided, including a signal module providing a changing current signal for a magnetic field device; the magnetic field device generating a changing magnetic field corresponding to the changing current signal, and the changing frequency of the magnetic field is consistent with the LED display. The refresh frequency of the left and right eyes of the screen is synchronized, thus forming a 3D display screen effect.

The seemingly stunning display effect is behind countless technical polishing and strong product support. Through this slightly deeper 3D principle, we have a further understanding of the display of 3D LED technology. Of course, in addition to technology, it is also essential in supporting hardware.

The hero behind the Internet celebrity 3D screen – REESTAR

The shocking 3D display effect achieved by REESTAR lamp beads is because it provides high refresh, high grayscale, high dynamic contrast, smooth transition of curved surface/corner, and video material production level to the display screen hardware.

p5 outdoor 208sqm in Serbia
p5 outdoor 208sqm in Serbia

Like the popular “Chongqing Guanyin Bridge Giant Screen 3D Screen“, it uses the high-end brand REESTAR series products manufactured by the National Star RGB Super Division as the core display device. Yes, its performance of various indicators exceeds the ordinary LED display. It has more than 30 patented technologies such as pin bending, multiple waterproof and matte design, not only delicate picture quality and gorgeous color, but also high brightness, long life, long warranty and other characteristics. Brightness, contrast, and wide color gamut are all outstanding, presenting a great visual effect to the audience.

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