LED Display Module
Optronics Industry | 2024-06-21

An LED display module is a compact unit that contains multiple LED pixels arranged in a matrix or grid formation. It serves as a building block for constructing larger LED displays, such as video walls or signage. LED display modules are designed to be easily interconnected to form a seamless and cohesive display surface.

Kinglight 4093 4-in-1 LED Sample Plate

Kinglight 4093 4-in-1 LED Sample Plate


Features & Components of LED Display Module


As a basic unit for LED displays, an LED display module has some key features and components as below.


LED Pixels:

LED display modules consist of numerous individual LED pixels. Each pixel contains a cluster of red, green, and blue (RGB) LEDs or a single-color LED, depending on the type of display. RGB LEDs allow for full-color displays, while single-color LEDs are used for monochrome displays.


Pixel Pitch:

The pixel pitch refers to the distance between the center of two adjacent pixels. It determines the resolution and image clarity of the LED display. Smaller pixel pitches result in higher resolution and sharper images.


LED Driver ICs:

LED display modules incorporate LED driver integrated circuits (ICs) that control the power supply and modulation of the LEDs. These ICs receive data signals and convert them into appropriate electrical signals to drive the LEDs.


Control Circuitry:

LED display modules include control circuitry responsible for receiving data and control signals, managing pixel activation, and coordinating the display operation. This circuitry communicates with external control systems or controllers to receive content and display instructions.


Frame and Mounting:

The LED display module is typically housed in a frame or casing that provides structural support and protection. The frame may include mounting mechanisms, such as screw holes, magnets, or clips, to facilitate easy installation and assembly.



LED display modules include connectors or connectors on the module’s edges to enable interconnection with other modules. These connectors facilitate the transmission of power, data, and control signals between modules, ensuring a seamless display surface.


Power Supply:

LED display modules require a power supply to operate the LEDs and control circuitry. The power supply can be integrated into the module or provided externally, depending on the design and configuration.


LED display modules come in various sizes, pixel pitches, and configurations, allowing for flexibility in designing and constructing LED displays of different dimensions and resolutions. They are commonly used in applications such as outdoor advertising displays, stadium screens, digital signage, and information displays.


Classification of LED Display Modules


LED display modules can be classified into different categories based on different factors,  including their construction, pixel pitch, color capability, and application.

1. Construction

  • Surface-Mount Device (SMD) Modules: SMD modules have LEDs mounted directly onto the surface of the module. They are compact, lightweight, and offer a high level of brightness and color uniformity.
  • Dual In-line Package (DIP) Modules: DIP modules consist of LEDs mounted on a separate package, which is then soldered onto the module. They are generally larger in size and provide good brightness but may have slightly lower color uniformity compared to SMD modules.


  1. Pixel Pitch


  1. Fine Pixel Pitch Modules: These modules have a small pixel pitch, typically less than 2mm. They are designed for high-resolution displays, providing sharp and detailed images, suitable for close viewing distances.


  1. Standard Pixel Pitch Modules: These modules have a pixel pitch ranging from 2mm to 10mm. They offer a balance between resolution and cost-effectiveness, suitable for various indoor and outdoor applications.


  1. Large Pixel Pitch Modules: These modules have a pixel pitch greater than 10mm. They are used for applications where the viewing distance is relatively far, such as outdoor billboards or stadium screens.


  1. Color Capability


  1. Monochrome Modules: Monochrome modules consist of single-color LEDs, typically red or amber. They are capable of displaying content in a single color and are commonly used for simple text or graphic displays.


  1. Two Color Modules: Two color modules are commonly seen in red and green to distinguish different types of information on an LED board. These types of LED displays bring great convenience for the audience to know what are key information and what are narrative information.


  1. Full-Color Modules: Full-color modules incorporate RGB LEDs, allowing them to display a wide range of colors. They provide vibrant and dynamic visuals, making them suitable for applications requiring high-quality color reproduction.


  1. Application


  1. Indoor Modules: These modules are designed for indoor installations and are optimized for viewing under controlled lighting conditions. They often have higher brightness levels and better color reproduction for indoor environments.


  1. Outdoor Modules: Outdoor modules are specifically designed to withstand outdoor conditions, including weatherproofing features and high brightness levels to ensure visibility in daylight. They are built to withstand dust, moisture, and temperature variations.



  1. Semi-outdoor Modules: Semi-outdoor modules are used for semi-outdoor usages and have balanced features between indoor and outdoor modules, for example, performance to withstand moderate exposure to moisture and sunlight, less brightness than outdoor LED display modules but higher brightness than indoor LED display modules.


Common sizes of LED display modules


LED display modules come in various sizes to accommodate different display requirements. The size of the LED display module refers to the dimensions of the module itself, typically measured in millimeters (mm). Here are some common sizes of LED display modules:


Small Modules: Small LED display modules are often used for indoor applications, such as information boards, retail displays, or small signage. Common sizes include:

  • 64mm x 64mm
  • 96mm x 96mm
  • 128mm x 128mm


Medium Modules: Medium-sized LED display modules are suitable for both indoor and outdoor installations, offering a balance between size and visibility. They are commonly used for advertising displays, sports screens, and digital signage. Common sizes include:

  • 192mm x 192mm
  • 256mm x 256mm
  • 320mm x 320mm


Large Modules: Large LED display modules are typically used for outdoor applications, where the display needs to be viewed from a distance. They are commonly found in stadium screens, billboards, and large-scale signage. Common sizes include:

  • 512mm x 512mm
  • 640mm x 640mm
  • 960mm x 960mm


The above mentioned sizes are just examples of some commonly seen dimensions of LED display modules. In fact, LED display modules are available in a wide range of sizes, including custom sizes to meet specific project requirements. The choice of module size depends on factors such as viewing distance, resolution, installation space, and desired visual impact. When selecting the size of LED display modules, consider the content to be displayed, the viewing distance, and the overall display configuration to ensure optimal visual performance.