Indoor Flexible LED Modules are lightweight, bendable, and easy to assemble, making them ideal for creating cylindrical LED displays in shopping mall atriums, exhibitions, museums, and other immersive spaces.
This guide will cover important usage precautions, the minimum ring diameter each module can achieve, and the step-by-step process for building a cylindrical LED screen.
1. Usage Precautions for Indoor Flexible LED Modules
Although flexible modules can bend, they cannot be twisted or deformed arbitrarily. Please note:
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Bending Direction: Modules can only bend along the length of the PCB board. Bending along the width or reverse direction may damage the circuitry.
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Bending Radius: The bending radius must be greater than the minimum safe radius specified in the datasheet, typically R ≥ 37.5 mm (diameter ≥ 75 mm), depending on the model.
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Mounting Method: Use a magnetic mounting system on a flat, even surface to prevent loosening or gaps.
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Cable Protection: Avoid pulling or sharply bending signal and power cables; keep cable transitions smooth to prevent breakage.
2. Minimum Ring Diameter by Model
|
Module Model |
Size (mm) |
Minimum Ring Diameter (mm) |
Pixel Pitch Options |
|
IF-2S Series |
240 × 120 |
76.4 |
P1.25 – P2.0 |
|
IF-3S Series |
320 × 160 |
101.9 |
P2.5 – P3.0 |
|
IF-2G (GOB Type) |
240 × 120 |
76.4 |
P1.25 – P2.0 |
|
IF-3G (GOB Type) |
320 × 160 |
101.9 |
P2.5 – P3.0 |
Calculation Formula:
Minimum Ring Diameter = Module Width ÷ π
(Width refers to the dimension along the circumference)
3. Step-by-Step Guide to Building a Cylindrical LED Screen
Step 1: Determine Dimensions and Pixel Pitch
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Define Application Needs
Choose the appropriate pixel pitch based on the installation location, primary viewing distance, and budget (the smaller the P value, the sharper the image, but the higher the cost). -
Close viewing (1–2 m): P1.25 ~ P1.875
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Medium viewing (2–3 m): P2.0 ~ P2.5
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Long viewing (≥3 m): P3.0 and above
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Measure Installation Space
Determine the diameter and height of the cylindrical screen. The diameter must be greater than the module’s minimum bending diameter to avoid damaging the PCB or LEDs.
Step 2: Design Module Layout
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Calculate Circumference Layout
Number of modules per circle = Circumference ÷ Module width
(Circumference = Diameter × 3.1416) -
Calculate Vertical Stacking
Stack modules upward according to module height, ensuring each column aligns vertically. -
Plan Seam Placement
Position seams in less visible areas to achieve a cleaner front appearance.
Step 3: Build the Structure and Mounting Surface
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Frame Construction
Use a circular steel frame or aluminum profile frame, with iron sheets or magnetic material on the outer surface for easy magnetic module attachment. -
Precision Control
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Roundness deviation ≤ ±2 mm
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Vertical deviation ≤ ±1°
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Surface Preparation
Ensure the surface is smooth and free of sharp edges to prevent damage to the module back and ensure proper magnetic adhesion.
Step 4: Install Modules and Manage Cabling
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Installation Sequence
Start from the bottom, working upward and from one side to the other, ensuring the bending direction matches the design. -
Cable Management
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Separate signal cables from power cables to reduce interference
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Secure cables to the frame with ties or clips, avoiding hanging or excessive tension
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Column-by-Column Inspection
Check that seams are flush, magnets are firmly engaged, and no modules are loose.
Step 5: System Configuration and Testing
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Mapping Setup
Configure resolution and module mapping in the LED control system to ensure correct image alignment without distortion or displacement. -
Brightness and Color Calibration
Adjust each module to match brightness and color temperature. -
Visual Testing
Play solid colors, grayscale patterns, gradients, and dynamic video to check for performance issues. -
Operational Verification
Run the display continuously for at least 24 hours on-site to confirm stable cooling, power supply, and signal transmission.
Conclusion
Using indoor flexible LED modules to create a cylindrical screen not only delivers a 360° seamless immersive visual experience in a limited space, but also surrounds viewers with engaging, interactive visuals. A cylindrical display ensures consistent image quality from every angle, so no matter where the audience stands, they enjoy clear, continuous content. This makes it ideal for shopping mall atriums, technology showrooms, conference halls, and main stages at exhibitions where attracting and holding attention is essential.
During the design and installation process, it is important to pay close attention to the minimum bending radius of the modules to ensure the curvature stays within the safe physical limits. This prevents structural stress and potential damage over long-term operation. At the same time, selecting the right module model and pixel pitch based on viewing distance, image quality requirements, and budget will help achieve the optimal balance between clarity and cost.
Installation is equally critical. Following proper procedures — including accurate measurement of the display diameter, evenly securing the flexible modules, and organizing power and signal cabling neatly — ensures a smooth, visually pleasing appearance while maintaining stability and reliability during operation.
With the right design and execution, a flexible LED cylindrical display can become the visual centerpiece of any space, delivering dynamic advertisements, creative videos, or real-time information that leaves a lasting impression and continues to draw audiences over time.