Guide to selecting materials for full-color LED display

In LED display projects, many customers tend to only focus on the screen itself, but ignore the importance of supporting materials. In fact, the choice of supporting materials directly affects the service life, safety and maintenance cost of the display. As an industry consultant for ten years, I will take you through how to scientifically choose the supporting materials for full-color LED displays to ensure that your investment gets the best return.

1. Steel structure skeleton: the "skeleton system" of the display screen

Steel structure is the basic support for LED displays, and its quality is directly related to the safety and stability of the entire system.

1. Key points for material selection

Hot-dip galvanized square tube: the first choice for outdoor projects, excellent anti-rust performance and service life of more than 10 years.

Aluminum alloy profile: lightweight, suitable for indoor installation and rental purposes, but limited load-bearing capacity. How much does an indoor LED display cost?

Stainless steel material: high cost option, suitable for high corrosion environments such as beaches.

Professional suggestions: Large outdoor screens (>50㎡) should choose Q235 steel with a wall thickness of ≥2.5mm, and ensure that the welding points are rust-proof. A customer once chose thin-walled steel pipes to save costs, but after two years the structure deformed, it led to obvious gaps between the modules. What is the difference between an indoor LED display and an outdoor LED display?

2. Design considerations

Reserve enough maintenance space (back ≥80cm)

Consider the local maximum wind load requirements (especially high-rise building installation)

Integrated heat dissipation channel (especially important for high-brightness screens)

2. Power distribution system: "cardiac power" of the display screen

Power quality is a key factor affecting the life of LED displays, and failures caused by poor power supply account for more than 40% of repair cases.

1. Power selection standard

Brand recommendation: First-tier brands such as Mean Well and Lite-On, although the price is 30% higher, the failure rate is as low as below 1%.

Power reserve: The actual power used shall not exceed 70% of the power supply rated power.

Protection level: outdoor use must reach IP65 or above.

Smart Power: Models that support remote monitoring can significantly reduce maintenance costs.

Real case: The display screen in a shopping mall was collectively burned at the opening ceremony because it used cheap power supplies, and the losses exceeded the cost saved at the beginning.

2. Cable selection

The main cable adopts national standard copper core wire (the cross-sectional area is selected as 1.5 times the actual current).

The signal line uses a double-layer shielded wire to prevent electromagnetic interference.

Flame retardant sleeves must be used for outdoor wiring.

3. Control system: "brain nerve" of the display screen

The control system determines the upper limit of the display effect and also affects the convenience of daily use.

1.Send card selection

It is recommended to use a dual network port sending card for large screens (>20㎡).

4K content playback requires selecting a model that supports HDMI2.0.

Considering the possibility of future upgrades, reserve a performance margin of 10-20%.

2. Receive card configuration

Each receiving card controls no more than 4 boxes (avoid signal attenuation).

Choose a model that supports HDR processing (the color performance is significantly improved).

For outdoor use, you need to choose a wide temperature version (-20℃~70℃).

Technical Trends: The latest control system has begun to integrate AI brightness adjustment function, which can automatically optimize display parameters based on ambient light.

4. Thermal dissipation system: the "lifeline" that is easily overlooked

Poor heat dissipation is the primary reason for the accelerated light decay of LED lamps.

1. Active cooling solution

Axial flow fan: low cost but high noise, suitable for temporary installation.

Turbo fan: High wind pressure, suitable for closed cabinets.

Air conditioner cooling: high-end choice, high energy consumption but best effect.

2. Passive heat dissipation design

The box is made of thermally conductive aluminum alloy.

Increase the area of ​​the heat dissipation fin (at least 30% of the backplane area).

Ensure the front and rear air circulation channels are unobstructed

Tested data: A good heat dissipation system can extend the life of LED lamp beads by more than 30%, which is particularly critical in the summer in the south. Let you understand how LED light beads work.

5. Auxiliary materials: Details determine success or failure

6. Selection of masks

A matte black mask can increase the contrast by more than 20%.

The outdoor screen needs to be anti-UV material (prevent yellowing).

It is recommended to use a magnetic mask for rental screens (simple and quick replacement).

2. Sealing material

Sealing of the box is made of silicone (temperature resistance -40℃~200℃).

EPDM strips are used to waterproof the module.

Regularly check the aging of sealing materials (it is recommended once a year).

3. Transportation protection

The rental screen box must be equipped with an anti-collision angle (at least R50mm).

Fixed shock-proof foam (density ≥25kg/m³). LED rental screen VS fixed installation screen.

Moisture-proofing agents are required during sea transportation.

6. Select a strategy: balancing cost and performance

7. Priority sorting

Safety-related materials (steel structure, power supply) cannot be compromised.

Materials (seals, heat dissipation) that affect maintenance frequency are worth investing.

Appearance-related materials can be selected flexibly according to budget.

2. Cost optimization skills

Long-term fixed installation project: Invest in high-quality basic materials.

Short-term activities: Consider renting high-quality supporting equipment. Provide you with a guide to calculate the price of LED display rental.

Batch upgrade strategy: first ensure the quality of core materials, and then upgrade the auxiliary system.

Industry experience: Although the initial investment of high-quality supporting materials is 20-30%, the comprehensive cost (including maintenance) within 5 years is usually more than 40% lower than that of cheap solutions.

Conclusion: Building a complete ecosystem

Choosing the supporting materials for full-color LED displays is like forming a professional team - each member plays an irreplaceable role. We recommend you:

Suppliers are required to provide a detailed list of materials and inspection reports.

On-site inspection of the operation of completed projects.

10-15% of the budget is reserved for unforeseen material upgrades.

Establish regular maintenance plans, especially for consumable parts

Remember, an excellent LED display system is a joint achievement of 80% high-quality materials and 20% professional installation and commissioning. Now that you have mastered the core points of supporting materials selection, the next step is to find trustworthy partners to jointly create amazing visual projects.

Thank you for watching. I hope we can solve your problems. Sostron is a professional LED display manufacturer. We provide all kinds of displays, display leasing and display solutions around the world. If you want to know: LED display purchasing guide: Top 10 key factors to help you make smart decisions. Please click read.

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