How do 3D LED screens work?

From the original 3D LED screens of the SM Building in South Korea, 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.

The naked-eye 3D LED display screens in various places have become the Internet celebrity check-in packages for tourists, and become a classic case of outdoor advertising. The word “naked-eye 3D” has also quickly become a hot topic in the industry. So how did all these magical effects come about? Let’s uncover the secrets together.

How to achieve such a realistic 3D effect?

As we all know, three-dimensional objects need to be connected by three lines of X, Y, and Z at the same time. If a single line or two lines can only form a plane. And our human brain is an extremely complex nervous system.

The reason why anything that the human eye sees is three-dimensional is because the two eyeballs pass through the small distance between the human eyes and see two pictures with subtle differences. The difference allows the brain to convert the spatial coordinates between objects in the direction in which the line of sight disappears. We can also distinguish the distance and size of objects through this feeling. This is the three-dimensional sense, also called the three-dimensional sense of space.

Synthetic Vision
Synthetic Vision

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 the 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 of the display screen, the cost is much higher than that of wearing 3D glasses in the theater. In fact, most of the current LED large screens to achieve naked-eye 3D 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, painters can use pencils to draw three-dimensional images that are fake and real.

How to make a flat animation produce a 3D effect? In fact, we just need to make good use of the reference object. We divide the ordinary picture into several layers through the white line, and then make the animation part “break through” the white line and cover the other elements of the layer, so that the parallax of the eyes can be used to form the illusion of 3D.

SM's 3D LED display
SM’s 3D LED display three-dimensional painting show

The 3D wave screen of the SM Building, which amazes the whole network as soon as it debuts, uses the shadow of the background as a static stereo reference line, giving the moving waves a feeling of breaking through the screen.

This is not enough. Have you noticed that the 3D LED 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.

The following is a simplified animation of 3D waves to show you the principle.

The hero behind the Internet celebrity 3D screen – REESTAR

The seemingly stunning display effect is behind countless technical polishing and strong product support.

Achieving stunning 3D display effects requires high refresh, high grayscale, high dynamic contrast, smooth transition between curved surfaces and corners, and the production level of video materials on the display screen hardware, which requires superior color expression. of stable display devices as support.

Chongqing Guanyin Bridge giant screen 3D screen
Chongqing Guanyin Bridge giant screen 3D screen

Taking Chongqing Guanyin Bridge giant screen 3D screen as an example, the high-end brand REESTAR series products of the National Star RGB Super Division are used as the core display devices, which have excellent performance in various indicators, including pin bending, multiple waterproof and matte designs, etc. Patented technology, delicate picture quality and brilliant colors.

It has the characteristics of high brightness, long life, long warranty, etc., and has excellent performance in terms of clarity, brightness, contrast and wide color gamut, showing excellent visual effects to the audience.

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