A brief introduction of LED modules

LED modules are rich in applications.

They play an important role in many fields.

In fact, understanding LED modules are simple.

With a better understanding of LED modules, I believe you can make a better buying choice.

This article will focus on three points.

These include the definition and composition of LED modules, the difference between indoor and outdoor modules, and the most important part, how to select the right LED module.

Part One what is the LED Display module

1. what is LED Module

In short, an LED module is a circuit containing various electronic accessories whose main function is to enable LEDs to play pictures or videos under control for the purpose of the user.

2. Component

The composition of the LED module is not complicated, including eight components.

These eight components are LEDs, PCB, IC, Frames, Connectors, Cables, Screws or Magnets, Resistors, and Capacitors.

We do not need to grasp all the components and their functions.

Actually, we need to master only the LEDs, PCB, IC, and Cable which are the four main components.




DIP (Double In-Line Package) LEDs are the most traditional form of LED lights.

Even, most people can imagine what an LED light looks like when they recall it.

DIP LEDs have a chip that is typically encased in hard plastic and uses two straight, parallel connecting pins.



SMD LEDs are surface-mount diodes.

Because three diodes can be placed on the same chip, they are smaller and more efficient than traditional DIP LEDs.

It has better brightness and the ability to change colors.



COB (Chip on board) LEDs are the latest development in LED lighting with their higher power.

Similar to SMD chips, COB LEDs have multiple diodes, usually about nine or more.



a.enerhy saving
Compared to fluorescent bulls

b.different color option

Its brightness can be seen even under strong sunlight

The best choice for outdoor use

Suitable for harsh environments and impact resistant

a. Heavy
Not suitable for displays with small pixels

b.Complicated to produce
Low production and expensive SMS


a.Moderate brightness
Suitable for indoor use

b.Display full color image
Colors can be modulated with specific intensity

c. Abundant size options
Variety of sizes for all kinds of applications

a. Strong color consistency
Flawless even at close range

Better overall appearance

d.Longer service life
Longer service life than DIP LEDs

a.Complexity of maintenance
Maintenance is the biggest problem in the long time continuous use

a.Strong heat dissipation
COB LED can be directly connected to the heat sink

b.Smaller size
Smaller space occupation

c.Higher efficiency
Can produce larger light source

a.Energy saving
Less power consumption, but provides brighter light

b.Small size
Fewer parts and smaller size for easy installation

c.High quality of light
Does not produce uncomfortable light for the eyes

d. Low failure rate
Low risk of failure, reducing maintenance costs

a. New technologies, new products
Many functions are relatively imperfect

b.Light quality is lower than SMD LEDs
Manufacturing technology is limited, so the light color quality is not as rich as SMD LEDs


PBCs for each product is customized and require different designs and materials in order to meet various needs.

For circuit boards in the LED industry, the efficiency of the board’s heat transfer is important.

With the growing interest in more efficient and cost-effective lighting methods.

However, much of the function of an LED depends on the temperature of its system.

For many companies, the solution to this problem is aluminum-based PCBs.

The main advantages of aluminum-based PCBs are the followings.

a. Recyclable

Aluminum is easy to recycle and non-toxic

b. Durable

Compared to other materials, aluminum is more durable and robust, and also resistant to impact and thermal damage

c. Light weight

Reduces transportation costs

d. High heat dissipation

It can effectively prevent circuit damage caused by overheating


LED driver IC is an integrated circuit (IC) that provides brightness control and backlight color control.

What we need to understand is that when the refresh rate of the IC is higher, the clearer the picture displayed by the LED module will be.


Cables are an important part of the LED module.

Usually, the cable is used together with other components to achieve the task of illumination and display.

Part Two Indoor LED Module?Outdoor LED Module? What’s the difference?


1.Indoor LED module

Indoor led module as the name implies is the LED module used in indoor placement.

The main application scenarios are the performance stage, exhibition, auditorium, etc.

2.Outdoor LED module

The Outdoor LED module as the name implies is placed in the outdoor use of the LED module.

The main application scenarios are sports fields, advertising scscreensoutdoor squares, etc.


(1) Brightness

The brightness of indoor and outdoor is different.

Outdoor light is stronger, so the display brightness of outdoor LED modules is generally not reflective after processing and need to be able to display the content even in strong light.

(2) Environment

The outdoor environment is variable, and because outdoor LED modules are placed outdoors for a long time, so it is inconvenient to repair and maintain, so outdoor LED modules have higher requirements for dustproof and waterproofing.

(3) Observation distance

The higher the pixel, the clearer the display.

Obviously, the indoor LED module has a higher requirement for pixels.

Because indoors, people can observe the indoor LED module at a close distance.


TypeProtection gradeBrightnessRefresh RateNote
indoor LED ModuleIP54600-1,000cd/m21920HZ~R3840HZLow power consumption, allowing for its own heat dissipation
outdoor LED ModuleIP65/IP685,000-10,000cd/m2960HZ~1920HZOutdoor display modules consume a lot of power.
The higher the temperature, the higher the power consumption, which will lead to shorter service

Part Three What to consider in selecting led modules?


1. Size of LED module

The size of the LED module means the width and height of the LED module.

When preparing to buy LED modules, the first consideration must be the size.

Because the size of LED modules is simple to measure, this part will not be a problem.

It is worth noting that most LED modules are fixed in size and may require customization if you need a special size.

2. Location of installation

(1) Indoor or outdoor?

First of all, you need to clarify whether the location of the LED module installation is indoor or outdoor.

Because indoor or outdoor, the LED module type you need is very different.

(2) Frontal service or back service?

Second, you need to clarify whether your screen needs to be installed against the wall.

If wall mounting, you can consider the frontal service LED module.

(3) Rental or fixed?

Depending on your installation location, you can also have a preliminary thought on whether to choose the rental form.

The price of leasing and purchasing is definitely different.

At the same time, the rental will also have an impact on the type of LED module.

3. Control system

(1) Synchronous control

Synchronous control requires a wired link between the computer and the controller.

The effect that can be achieved by synchronous control is the screen and computer screen synchronization.

(2) Asynchronous control

Asynchronous control supports computers, cell phones, and tablets linked by way of wireless WIFI.

The effect that can be achieved by asynchronous control is that the LED module can play the screen alone, without the support of other devices’ synchronized screens.


After reading this article, readers must have a deeper understanding of LED modules.

If you have any questions about LED modules or want to buy our product, you can seek the help of online customer service.

We ledcontrolcard have a professional team all the time ready to help you.

Thank you for your support!

If you want to learn how to maintain the LED module, you can click here to continue reading!