Today, 3D LED screens have become the mainstream visual solution for advertising landmarks in many cities. However, the perfect visual effects would not be possible without the support of 3D technology. If you are looking for suitable technical solutions for your project, this article will introduce three 3D technologies in detail.
The Principles of 3D Vision Generation
The principle of the three-dimensional visual effect presented by 3D LED screens is the “binocular parallax” of human vision. This means that, due to the distance between the left and right eyes, the perspectives perceived by each eye are not entirely identical. However, the brain automatically fuses these different images, thus forming three-dimensional stereoscopic vision.
The working principle of a 3D screen is to display two slightly different images simultaneously. The eyes receive the information and notify the brain to merge the two images, thus producing a three-dimensional stereoscopic visual effect.
The Three Major 3D Technologies for 3D LED Screens
Glasses-Based 3D Technology
This technological approach requires wearing special 3D glasses to see the three-dimensional visual effects of the LED screen.
Active Shutter 3D
The working principle of active shutter 3D relies on the synchronized collaboration between the screen and the eyes, forcing the left and right eyes to view different images separately. Active shutter 3D technology operates through the synergistic interaction of two core hardware components.
First, a display device with a refresh rate of at least 120 Hz is required to apply the screen dual-frame alternation technology, which alternately delivers image information to the left and right eyes at a high rate. Next, you will need to wear a pair of 3D glasses with a built-in liquid crystal light valve, ensuring that your left and right eyes see the specific images intended for them.
Finally, the brain fuses the different images received to produce three-dimensional stereoscopic vision. Active shutter 3D technology makes the images appear more three-dimensional with vibrant colors and extremely clear images. If your project wants a more realistic visual effect, you can choose this one.
Polarized 3D
The core principle of polarization 3D technology is “light filtering.” Through the coordinated interaction between the screen and the glasses, it utilizes the polarization properties of light to force the left and right eyes to see the images intended for them.
Similarly, this technology requires a 3D LED display and a pair of 3D glasses. At first, a polarized screen is needed. These images are encoded as horizontally and vertically polarized light and transmitted to the respective eyes. Then, we need a pair of polarized 3D glasses with an embedded polarizing film to filter images for our eyes.
The advantage of polarized 3D technology is that the screen is flicker-free, thus ensuring you get a better visual experience. And this technology is highly compatible with display devices. Compared to some active shutter 3D technologies, it has less brightness loss but lower image quality.
Naked-Eye 3D
Naked-eye 3D display technology aims to eliminate the limitations of 3D glasses by using optical structures to directly separate the images for the left and right eyes, thereby creating a good visual experience. If your project prioritizes protecting eye health, this is a good choice.
Parallax Barrier
The essence of parallax barrier technology is a physical method of light blocking. It blocks half of the pixel array on the 3D LED screen by covering the screen with a high-precision black slit grating. When the video starts playing, the raster can control the pixel column to ensure that both eyes can see the specific image.
Parallax Barrier technology is currently the most mature naked-free 3D display technology on the market. Its simple manufacturing process makes it suitable for mass production, and it is compatible with the vast majority of displays. However, when you choose it, you need to consider the disadvantage of reduced resolution.
Lenticular Lens
Lenticular lens 3D technology mainly utilizes the principle of light refraction. It works by covering a 3D LED screen with a front film composed of countless tiny convex lenses, and then using the focusing and refraction of light to transmit images from different perspectives to the left and right eyes.
The main advantage of Lenticular Lens 3D technology is that it can fully utilize light to make the screen brighter and achieve higher color fidelity. If you choose it, you will get a 3D LED screen with superior visual effects.
AI Light Field
AI Light-field 3D technology uses infrared sensors to track your eyes intelligently. This technology utilizes a camera mounted on the front of a 3D LED display to track the viewer’s eyes. And it employs an AI system to calculate the left and right positions, transmitting different images to each eye in real-time.
3D LED screens manufactured with this technology can produce natural three-dimensional visual effects and effectively reduce visual fatigue. Besides, viewers can move around freely in front of the screen without affecting the 3D visual experience.
LED’s Exclusive Cutting-Edge Technology
Chip on Board (COB) Packaging
COB packaging technology directly mounts LED chips onto a PCB using adhesive, thereby creating a smooth surface. Unlike SMD packaging technology, which uses individual LED chips, COB packaging makes PCBs smoother and provides better heat dissipation. If your project has particularly high image quality requirements, I recommend using this technique.
Micro LED Naked-Eye 3D
Micro LED naked-eye 3D technology is based on inorganic semiconductor electroluminescence. This technology uses third-generation semiconductor materials such as gallium nitride to create micron-sized LED chips, which enable them to emit light independently. This technology is considered the ultimate form of future display technology, and 3D LED screens made from it are almost perfect.
How to Choose the Most Suitable Technology
Outdoor Commercial Landmark Screen
If your project involves producing large outdoor commercial landmark screens, you can choose Lenticular Lens technology. It can effectively reduce light loss in bright outdoor environments, thus helping to maintain the brightness required to present 3D visual effects.
Indoor Public Large Screens
Indoor public large screens need to operate for extended periods and are viewed by large audiences, thus placing high demands on image quality and power consumption. The most recommended technologies are COB packaging and Parallax Barrier technology. The former ensures clear image quality, while the latter guarantees the durability of the large screen.
Large Exhibition Hall
Large exhibition halls need to display exquisite products, so the image quality requirements for 3D LED screens are high. If your project involves a large exhibition hall, I recommend using AI Light-field technology. This technology allows viewers to move freely in front of the screen and enjoy the best 3D visual experience from any position.
For Home Use
For most households, 3D screens take up far too much space. If you are looking for a space-saving solution, you can choose Micro-LED naked-eye 3D technology. This technology not only enables 3D screens to present a realistic three-dimensional world but also effectively reduces visual fatigue for viewers.
FAQ
What Is the Difference Between 3D LED Screens and 3D in Movie Theaters?
Most 3D screens in movie theaters require you to wear 3D glasses to watch. However, the 3D screens currently available on the market that are produced with naked-eye 3D technology do not require the use of glasses.
How Does Active Shutter 3D Achieve Seamless Switching Between the Left and Right Eye Views with Its “120Hz High Refresh Rate”?
In Active Shutter 3D technology, the 3D display screen is a machine that plays images at high speed, and the 3D glasses are like the switches for your eyes. As the display alternately presents different images, the 3D glasses simultaneously block the view of the left and right eyes, ensuring that each eye sees the specific image.
When Faced with a 3D Screen, How Do We Determine Whether It’s “Naked-Eye 3D” or “Polarized Light 3D”?
The simplest way to distinguish them is by sight: a naked-eye 3D screen allows you to perceive three-dimensional effects without wearing 3D glasses, whereas a polarized light 3D screen will display ghosted images if viewed without 3D glasses.
What Is the Optimal Viewing Distance for a 3D LED Large Screen?
The optimal viewing distance for a 3D LED screen is 30 to 40 times its pixel pitch. It is suitable for viewing closely if the pixel pitch is small.
Does a 3D LED Large Screen Consume a Lot of Power?
The power consumption of a 3D LED Screen depends on the 3D technology used, the ambient brightness, and the size of the screen. The brighter the environment and the larger the screen size, the higher the power consumption.
Final Thoughts
Each 3D technology used for 3D screens has its own advantages and disadvantages. If you are looking for the best partner for your 3D LED screens, JINGYLED will be your best choice. Our company has top-notch technology and an experienced team, and please feel free to contact us if you have any needs.
