A Beginner’s Guide to LED Screens

LED Screen

Table of Contents

According to Statista, the global micro-LED market can reach 71.8 billion USD by 2027. Isn’t it amazing? Such a significant amount.

LED displays have taken the world by storm. They have applications in every field of human life. Let us discuss LED displays in detail. We will go through various aspects of display screens. Let us start with a basic understanding of display screens.

What is an LED display?

It is a flat-panel display that uses light-emitting diodes as a light source. It works on the principle of diode light emission. It consists of many LED modules. These modules have many tiny lamps or chips and other components.

LED Screen

The full LED display comprises of following:

  • LED display module
  • Power supply
  • Cabinet
  • Control card
  • Cooling fan
  • Video processor
  • Power and signal connector

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These screens can display various content formats. It includes text, images, and video graphics. Besides, these display screens have many characteristics, including:

  • High photoelectric conversion efficiency
  • Low driving voltage
  • Easy compatibility with computer interface
  • Long lifespan
  • Variety of sizes and shapes
  • The high-quality visual experience
  • Short response time
  • Highly reliable and durable
  • Eco-friendly

You can use LED displays in:

  • Advertising
  • Sports
  • Industries
  • Transportation
  • Commerce
  • Educational institutions
  • Airports
  • Malls
  • Hospitals
  • Banks
  • Hotels
  • Markets

Now, I will explain the light-emitting diodes.

What is an LED-light emitting diode?

In words, LED stands for Light Emitting Diodes. When you pass electric current, it emits light. It is a semiconductor device having two electrodes. They can produce high-intensity light. There are various color LEDs, including:

  • White
  • Red
  • Green
  • Blue
  • Yellow

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The closest associate of LED displays is LCDs. In words, LCD stands for Liquid Crystal Display. It uses liquid crystals to create images. However, it differs from LED technology in various aspects.

Now, you have a basic understanding of LED displays. I will discuss some of the features of display screens. There are some terminologies used in the display industry.

What refers to the pixel pitch of an LED display?

It is the distance between two adjacent pixels. Now, you must be thinking about what a pixel is. Every RGB or LED chip is a pixel. We measure this distance in millimeters mm.

You may have heard of P4, P5, or P10. The digit after P refers to the pixel pitch. Pixel pitch has a relation with the viewing distance of the audience. For example, if the audience is 5 meters from the screen, the pixel pitch should be 5mm.

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What is the viewing distance of the LED display?

It is the distance from the screen where you can see a clear image. The image can become distorted if you are sitting beyond the viewing distance. There is a similar case when you are sitting too close.

As discussed above, viewing distance and pixel pitch have a close relationship. Thus, one has to select the pixel pitch keeping in mind the viewing distance.

What is the resolution of the LED display?

It is the number of pixels that you can display on a screen. We can show the resolution by two numbers, e.g., 1920 × 1080. It includes the width and the height. Two of the most common resolutions of display screens are:

  • 1920 × 1080
  • 1280 × 720

What is the viewing angle?

It is the angle from which you can see the display. And it is not the issue when you watch the LED screen and sit in front. But the picture quality is lower if you are viewing it off-center.

This angle determines what the off-center view of the viewers is. If it is wide enough, the viewer can enjoy a good quality view when not sitting in front of it.

The most acceptable view angle is 178/178. It is the widest viewing angle.

What is the refresh rate?

It can refresh the frequency of the image on the screen. It measures the number of times a new image shows on the display screen per second. We measure it in Hertz (Hz).

If we have a refresh rate of 3840 Hz, we can refresh our screen 3840 times per second.

A high refresh rate means a smoother image. For example, 1920 HZ is the baseline. Therefore, we consider any refresh rate higher than this as a high refresh rate.

Displays with low refresh rates only become a problem when we are going to record them by the camera. So, we recommend screens with high refresh rates for TV production.

We can increase the refresh rate of an LED display by the following means:

  • First, use an LED module that supports a high refresh rate.
  • Use high-end driving IC.
  • Software should be good and updated from which you operate your screen.

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What is screen brightness?

Unit of screen brightness is a nit. Nit is equal to candela per meter square (cd/m2). So, we can estimate brightness via nit. The higher the nits, the brighter the screen is.

Generally, the following values are present in the market:

For example,

  • For indoor LED displays, it is between 500-1500 nits.
  • It can go up to 4000-7000 nits or more for outdoor screens.

For retail stores, brightness should be high. But unfortunately, in the stores, artificial lighting makes the display dim. So, we have to maintain the high luminance of the screen for better visibility.

What is the contrast ratio?

Screen visibility has a direct relation to contrast ratio. The contrast ratio is the ratio between the brightness level of two shades of colors.

These colors are darkest black and whitish white. So, it is the ratio between these two shades of image and their brightness level.

For significant brightness differences, there is high contrast ratio. So, with high contrast ratio, we have better image quality. It will have darker shadows and brighter highlights.

With a low contrast ratio, the image looks greyish. So, for more cases, we prefer a high contrast ratio. Due to high contrast, there will be an incredible viewing experience.

What are the types of LEDs?

Here is the list of different LEDs present in the market:


It stands for dual-in-line LED. These LEDs have traditional LED bulbs. It can produce any color by the combination of three colors of bulbs. But unfortunately, there are only three colors that include red, green, and blue.

The feature which makes it unique from other LED displays is brightness. It can show a brighter picture than other LED displays. So, we adopt it for outdoor applications.

Brighter images produced by these LEDs help to maintain visibility in sunlight.

These LEDs find their application in outdoor LED screens and digital billboards. The DIP LEDs have a narrow viewing angle.

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Here SMD stands for the surface-mounted device. Unlike DIP LEDs, LED chips play a role in manufacturing instead of LED bulbs.

Here red, blue, and green LEDs combine to form a single chip.

Compared to LED bulbs, the size of the chip is smaller. So we need more chips to form a display panel. In this case, we can get high resolution because of the high density of chips.

These LEDs find their application in indoor and outdoor setups. Moreover, we can find it in smartphones, TVs, and lighting devices. Unlike DIP LEDs, it has a broader viewing angle.

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It stands for glue on board. GOB LED is the updated version of SMD LED. The packaging technique is the same in both types of LEDs. Picture quality is also almost the same in both.

It differs from SMD LED in protection features. In short, GOB LED is a more stable version of SMD LED.

The application of glue provides protection. The surface of the LED is usually covered by adhesive. In short, it utilizes sealant for protection. This glue act as a protective shield. It protects the LED from dust, liquid, and corrosion.

Besides, heat dissipation is more significant due to glue application.

Hence provide a wide range of working temperature. Lifespan also increases due to such features of GOB LED.

We find these in fine-pitch LED displays and transparent LED displays. Moreover, they also find their application in the rental service of LED screens.

They are also cost-effective as they are less prone to damage and collisions. Besides, the maintenance cost is pretty low.

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COB LED stands for chip on board. Unlike SMD LED, which combines three LEDs to form a chip, it combines nine to create a chip.

These chips have one circuit and two contacts. It gives you high screen brightness but with low power consumption. Among all other types, it has the best power efficiency.

COB LEDs are tiny. It gives finer pixel pitches due to their small size density increases. It can fit 38 times more LEDs than a DIP LED display panel of the same size.

It has a high resolution due to its high pixel density. It finds its application in manufacturing fine-pitch LED screens and mini-LED screens.

It provides the highest resolution with the best picture quality.

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What are the installation methods for LED screens?

We can install LEDs by different methods. Here are some installation methods described below.

  • Wall Mounted Installation
  • Wall Embedded Installation
  • Ceiling Hung Installation
  • Single-Pole or Double-Pole Installation
  • Roof Installation
  • Mobile LED Screen

Wall mounted installation:

It is one of the most applicable methods of installation. This method is relatively easy. It is suitable for indoor, semi-outdoor, and outdoor applications.

We need a bracket for indoor installation. We mount this bracket to the wall. This bracket is usually for the support of various LED screen modules. This type adopts a front maintenance design.

For outdoor installation, we need a large and customized steel frame.

We can mount this on the building wall. This type adopts a rear or front maintenance design.

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Wall embedded installation:

This method is applicable for both outdoor and indoor setups.

In this method, we embed the LED screen into the wall. It is suitable for companies that prefer simple designs.

It adopts a front maintenance design. This method is quite challenging for engineers. They have to estimate the depth in the bracket, and LED modules can be easily embedded.

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Ceiling hung installation:

It is the best choice when space is not enough. For example, it is suitable for indoor venues with foot traffic. Such sites include railway stations, passageways, and entrances.

The limitation in this method is mostly size. Most ceilings do not have the design to bear the load of large screens. So, we prefer small LED displays.

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Single pole or double pole installation:

This method is usually helpful in the case of outdoor LED billboards. For small screens, we use a single pole. But, as giant screens are heavy, two bars are generally used for support.

This method is often complicated as compared to other indoor methods. We have to assess various parameters before installation. It includes the soil condition, the structure’s height, and the wind load.

We need a concrete foundation for the installation of the pole. It also needs adequate space. But this also provides the advantage of not disturbing the road traffic.

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Roof installation:

The advantage of this type of installation method is visibility. It is high from the ground. So, the viewing distance increases.

The limitation that engineers face is wind load. This method is applicable in urban areas. It is because these areas have high-rise buildings.

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Mobile LED screen:

In this method, LED screens are part of the vehicle. We install them on the truck or trailer. These vehicles then move around and display the contents we want to convey.

In this method, we need power generators and inverters. Therefore, we need to provide enough power to support the screen.

What is the application of LED screens?

LED display screens have different applications. It can be outdoor or indoor. Its most prominent role is always advertising. We can use them in various ways. These possibilities have no limit.

Some of the LED display’s applications are:

  • Retail Advertising
  • Outdoor Advertising
  • Sports Arena or Stadium
  • Glasses-free 3D LED screen
  • Hotel Ballroom

Retail advertising:

The main concern of retailers behind its usage is an advertisement. Thus, they find it the best way to grab the customers’ attention.

An LED screen is one of the best options for a retailer to combat competitors.

It has a list of advantages:

  • It can increase customer engagement.
  • It grabs the attention of potential customers.
  • It has flexibility in the case of content.
  • Its installation also shows flexibility. One can install it according to the store’s layout.
  • Brand advertisement is relatively easy because of these LED screens. It also excludes the printing cost.

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Outdoor advertising:

We have already discussed that this application is the most important one. For a business, it is the most precious asset to grow in the market. So there is the use of digital billboards to flourish their business.

Customer reach increases due to these types of LED screens. Its bright display is enchanting. It has various advantages, like lower maintenance costs. Moreover, we can operate it under a hot sun or during rain.

These screens show different contents at different times. We can schedule it to display the required content. We can display various media formats on it. It includes a video, an image, a graphic, etc.

Sports arena / Stadium:

LED screens also find their application in stadiums. They are now part of recreation also.

We can use it as a scoreboard in stadiums. Other uses include match highlights and advertisement. Like other areas, this area application has many advantages.

It can engage the audience by showing match highlights. In a stadium, it is difficult to show the audience every moment. It is usually made possible via the help of an LED screen. So, this advancement in the stadium’s field takes it to the next level.

Moreover, the professional look of the stadium also increases.

Glasses Free 3D LED screen:

With the advancement of technology in every field of life, we have evolved so much in LED screens. All we need for a business is to grab the attention of customers.

Now with advancements, we need something new to attract customers. In this regard, a glass-free 3D LED screen proves to be the best option.

We can watch 3D content without any 3D glasses. People now find it more attractive than other displays. So, take advantage of this we can advertise much better. It eventually increases brand awareness. This application is now the most effective one. It gives the viewer an exciting visual experience.

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Hotel ballroom:

The hotel ballroom is one of the most favorite parts of business events. It holds weddings and other events.

We can enhance our bookings via the installation of screens. LED screens play a significant role in hotel ballrooms to attract visitors. It can display different digital formats. The visual experience is the best way to remember something. These displays attract viewers. They have an unforgettable experience.

Also, it is cost-effective to exclude the cost of backdrops.

Dreamway Technology:

Dreamway Technology has been producing and supplying LED displays for over a decade. We have built a reputation for ourselves in the market. We aim to provide you with quality displays. We offer you unique LED screens at affordable prices. We demand no MOQ. And we offer 3% free spare parts depending on your project.

We offer different types of LED displays. You can quickly get the screen of your choice from us. We are here to fulfill your dream of marvelous LED screen setups. If you want any display screen, please drop us a line.

Sunny Wong
Sunny Wong

Hello. I am Sunny Wong, the author of this post.

I entered the LED screen industry in 2008 and have always been in this field.

The purpose of this article is to share with you the knowledge related to LED screens from a Chinese supplier’s perspective.

If you want to distribute or explore your local LED screen market, please ask me any questions.

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