All About LED Display Cabinet

If you’re new to LED technology, you might be thinking that an LED display is one big slab of screen. Multiple smaller LED modules are connected to form one big LED display. LED modules are like puzzle pieces, enabling seamless transportation, assembly, and disassembly of oversized displays without the need for specialized tools.

LED cabinets, with their components enclosed in frames or cabinets, function independently and can operate on their own, just like individual LED modules. Think of them as small LED TVs. In this blog, we’ll learn more about LED display cabinets and how important they are to your display.

What is an LED Display Cabinet Screen

If humans have different organs, LED screens have these modules that work together to display content. These “organs” are made of smaller components that are enclosed inside an actual cabinet or frame, hence, the term LED cabinet.


Here’s a look at what’s inside an LED display cabinet:

LED Display Module

The LED display module is the screen itself. It is made of thousands of light-emitting diodes (LEDs) arranged in a grid-like pattern. These LEDs, which come in red, blue, and green, produce light using the passing electric current.

There are various types of modules depending on how the LEDs are arranged:

  • Direct Plug-in (DIP) Module: In the DIP module, the red, green, and blue LEDs are grouped as a single pixel point and and installed directly onto the PCB board by soldering. For outdoor installations, this module type is the simplest and offers the greatest stability and durability.
  • SMD LED Module: This type of module groups three light-emitting diodes into one tube.
  • GOB LED Module: This type of module has a protective coating achieved through the glue pouring method. It is waterproof, scratch-resistant, and dust-proof.
  • Chip-on-Board (COB) LED Module: This type of display uses bare LEDs directly in contact with the substrate. This allows LEDs to be tightly packed across the module for a higher-lumen output.
  • Mini Display: This type of module uses mini LED crystals ranging from 100-200 microns and are also called a sub-millimeter LED.

Pixel pitch also affects the clarity of the display. The P10 LED display cabinet is one of the most common for outdoor installations, while the P5 is suitable indoors. 

Power Supply

The power supply converts other forms of energy into electrical energy. The converted electrical energy is then supplied to the module.

Display Cabinet

The LED display cabinet is the frame that encloses the LED module and its internal components. The display cabinet has different finishes or materials, depending on the type of installation. We’ll discuss these types and finishes in the next section of the blog.

Receiving Card

The receiving and sending cards comprise the control system of the LED screen. The sending card collects and transmits data to the LED display. The receiving card found in each cabinet receives data from the sending card.


The connector is a collective term for the power plug, data plug, and all the internal wiring in the cabinet.

Cooling Fans

While LED cabinets don’t produce a lot of heat, they still need cooling fans to help maintain ideal operating temperatures. There are three types of fans typically used in modules: ball fans, silent fans, and oil-retaining bearing fans.


The cables refer to the power cords, network cables, and cables between power supplies and receiving cards.

Types of LED Screen Cabinet

LED cabinets can be classified according to the type of installation:


Fixed LED cabinets are permanent installations whether indoors or outdoors. They are characterized by their weather resistance, which is why they are bulky and heavy and could weigh up to 50kg each.


Rental LED cabinets are lightweight and easy to transport because they are meant for temporary installations such as concerts and one-time events. They typically come in two sizes, 500×500, 500×1000mm, and you can stitch them together to form one large display.

LED Display Cabinet Finishes

An LED display cabinet can be made with various materials, and the type of material will depend on the type of installation you choose:

LED Display Cabinet Die Cast

Die-cast aluminum cabinets are known for their durability and lightweight build. They are molded in one go, which ensures that they fit the module and its components like a glove. This process also ensures the flatness of the screen for a more seamless display.

Iron LED Display Cabinet

The iron LED display is widely used in both indoor and outdoor installations, and they typically have a two-door opening at the back for easy maintenance access. Iron cabinets are cheap and have a good seal. However, they are highly corrosive and heavy.

Magnesium Alloy Cabinet

Magnesium alloy cabinets are made of magnesium alloy combined with other materials. While they are durable and have heat-dissipating properties, they are more expensive than other types of cabinets.

Carbon Fiber LED Cabinet

Carbon fiber cabinets boast high durability despite their ultra-thin and lightweight build and typically weigh under 10kg per square meter with a tensile strength of 1,500kg. This modularity allows easy transportation, assembly, and disassembly.

Nanopolymer Material Cabinet

A nanopolymer cabinet boasts shock-proof and anti-fall features, making it suitable as an outdoor LED display cabinet. A single cabinet only weighs under 5kg, allowing for easy transportation and assembly.

How the Type of Cabinet Affects Maintenance

There are two methods of LED maintenance, front maintenance and rear maintenance:

Front Maintenance

As the name suggests, front maintenance requires personnel to access the internal components of the LED cabinet from the front. This type of maintenance requires a magnetic tool to pull away the module from the cabinet, while some LED modules have screws in the front for easy opening. Front maintenance is suitable for installations where access from the back is limited or for ultra-thin displays.

Rear Maintenance

Rear maintenance is the most common method of LED maintenance, especially for outdoor installations. This type of maintenance allows personnel to access the internal components of the display from the back. This is suitable for installations on building facades. Iron LED displays are the best example of rear-maintenance cabinets as they have two door openings at the back.


LED cabinets are crucial in maintaining the structure of LED displays. While cabinet-free installations are possible, it’s only suitable for certain locations. Cabinets protect not only the module but also the internal components that are critical in keeping the display up and running.

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