What Is LED Pixel Pitch And Why Does It Matter?

Lets Have a Look To LED Pixel Pitch & Why Does it Matter?

 

LED screens are now among the most popular mode for advertisement, spreading awareness and giving away information. More and more businesses around the globe understand that impact LEDs are making, thus they are investing a lot of money in it. There is no doubt that LED generates outstanding results, but you need to fully understand pixel pitch concept in order to enjoy the LED display to its full potential.

LED pixel pitch might be a tricky task; however, it is of great importance. Knowing the right pixel pitch will help you make the right decision. Even if you are the first time LED display buyer, you do not have to worry. We are going to provide you with a detailed article on what pixel pitch is, its basics and why it is so important while choosing an LED screen.

 

What is LED Display?

 

Before getting down to LED display pixel pitch, knowing about the LED display is important. LED stands for light emitting diodes; these flat panels display uses light-emitting diodes as pixels in order to generate images and video. Due to their outstanding technology, they are able to stand out in the bright light. Unlike LCD, LEDs are clearly visible in the sun.

They are also energy efficient, thus they make them the best choice for outdoor billboards and digital display. They are now the main source for digital signage, both indoors as well as outdoor. The modern LED offers reception as good as any LCD screen.

 

All about LED Pixel Pitch

 

                         led pixel pitch

 

Now that you know the basics about the LED screen, it is time to get a little advance. Let’s first talk about a pixel and then we will move on to the pixel pitch.

 

Define a Pixel

 

In layman terms, we can say that the smallest element of a digital image is called pixel. It is relative to where you present it. Since pixel is the smallest unit of an LED display, thus one LED is referred to as one pixel.

On the other hand, the pixel is one dot on the computer screen. An LED screen compromises of numerous LEDs meaning it has several pixels. These arrays of pixels light up different colors and intensities to generate videos, animations, graphics and letters. LED might use the same basic principle as that of your computer screen, but it is a way more efficient and effective technology.

 

What is Pixel Pitch?

 

We can define pixel pitch as the density of LED clusters or pixels on an LED display. This also has a relationship with the resolution.

People generally call the pitch a dot pitch or just pitch. It is the distance between centers of one pixel to its adjacent pixel. To make things easier for you, we can say that one-pixel pitch is the distance between two pixels. So, a smaller pixel pitch means, there is less empty space between the pixels. Therefore, it is safe to say that a higher pixel density means a better screen resolution.

 

Basics of Pixel Pitch

 

You already know that pixel pitch is the distance from the center of an LED package or cluster to the next LED cluster. The distance is measured in mm and the LED clusters are placed on top of a circuit board and backplates. Formally, we call the back plates, the modules.

When you group multiple modules together in a big display surface, it means you are creating an LED video wall. In order words, you fix these tiles together to make one big display.

The price of the LED greatly depends on the number of clusters you mount on a single module. The more modules there are, the higher the price will go. Most part of an LED screen’s cost is due to these modules. You can cut down the number of modules, but then it will reduce the resolution. The lower resolution is perfect if the viewing distance is more. However, in the case of smaller viewing distance, you will have to bear the cost.

 

Display Resolution and Pixel Pitch

 

                     led pixek pitch

 

People often confuse the display resolution with pixel pitch. They think that resolution and pixel pitch is almost the same thing, however, there is a mark difference. It is important to understand this difference in order to make the right decision while buying LED signage.

A resolution is the number of pixels that are present in each dimension of the display. In other words, it means the number of pixels that a screen can display within its width and height. For instance, a device with a resolution of 1280 x720 has 720-pixel height and 1280 pixel width.

Pixel Density, on the other hand, is measured in PPI i.e. pixels per inch. It means the number of pixels that are present on every inch of the LED sign. Looking for a sharp image and clarity, you will have to opt for a higher pixel density.

 

Important Points to Remember

 

  • Pixel pitch has a direct impact on the viewing distance, thus it is important when buying an LED screen.
  • If you are looking for an LED screen with a short viewing distance, it is better to choose a smaller pixel pitch.
  • Likewise, for a greater viewing distance opt for a bigger pixel pitch.
  • You can get to know about the pixel pitch value via the optimal viewing distance of your LED screen.
  • If you want a high-resolution screen, use a smaller pixel pitch as it indicates higher pixel density.

 

Importance of Pixel Pitch

 

Pixel pitch greatly influences the optimal viewing distance, thus it is of great importance. If your target audience are going to standing near the LED display, it is better to opt for a lower pixel pitch. A lower pixel pitch is going to achieve finer details and smoother borders of the image. If you opt for higher pixel pitch for small range audience, they are bound to get disappointed, as they will not be able to see a clear image. They will be distracted due to the discerning individual pixels i.e. they will be able to see the spaces between the pixels.

The rule of thumb for determining the pixel pitch and the distance is that a high pixel pitch means elongated minimum viewing distance and vice versa. Therefore, digital signage of 1.2 mm with an optimal viewing distance of 16mm requires significantly higher resolution.

People of you might be attracted to higher pixel density, but understand that it is not suitable for all situations. You do not need additional pixel density for greater viewing distance; it will not improve the quality of the viewer. On the contrary, it will simply increase your cost.

 

Choosing the right pixel pitch

 

Now that you have a clear idea about what a pixel pitch is, the next step is to choose the right pixel pitch. We have already established that for a greater resolution you need to have a smaller pixel pitch. However, smaller pixel pitch will exponentially increase the price of your digital signage. The increase in the materials along with the production cost is higher because lower pixel pitch means a higher number of pixel clusters. This in return will create a higher pixel density.

Nonetheless, you can get the best value for your LED sign, if you choose the optimal viewing distance between your display and the potential audience. You will be able to retain image fidelity by using the optimal viewing distance. In case the audiences move closer to the digital sign, the screen is going to appear pixelated and the image quality will decrease.

For instance, if you are installing an interactive touch display in your retail shop, it means the digital signage should produce crisp images, thus it needs to have a lower pixel pitch. On the contrary, if you plan to get an LED display such as hanging in an arena, then a higher pixel would do the trick. To sum up all this, for better image quality, you will need a smaller pixel pitch and for a normal to poor image quality, you can opt for a higher pixel pitch.

Note: Investing in smaller pixel pitch is only worth it if the audience is going to see the distance at a near range.

 

Methodologies for acceptable Viewing Distance

 

                                      led pixel pitch

 

 

10x Rule

 

To calculate the visual acuity distance, you can use this method. However, do remember this will not provide you with accurate calculation. On the contrary, it is a shorthand method that will provide you with an approximate estimation.

Formula:

Pixel Pitch x 10 = Viewing Distance in Feet (Approximate)

 

Visual Acuity Distance

 

Visual Acuity Distance has another name, the retina distance. This is popular than the 10x rules as it tends to generate better and more accurate results. To calculate this distance, a person with perfect eyesight i.e. 20/20 has to move away from the LED display in order to reach a distance where they can see a coherent image and it is not pixelated.

Formula:

Pixel Pitch x 3438 = Visual Acuity (Feet)

 

Average Comfortable Viewing Distance

 

This is a subjective estimate. You will track the distance at which people are comfortable able to see the image. For this method, factors like a content, screen resolution, person’s eyesight and type of content are considered.

 

Rule of the Thumb

 

Another easy, yet widely accepted industry rule for determining the optimal viewing distance is the 1mm in pitch. It means that a 1mm in pitch can be seen from 8 feet viewing distance.

These methodologies do hold merit; however, there is no right answer to calculate the viewing distance. Below is the table that provides different visual acuity distance for different pixel pitches.

 

 

Pixel Pitch
(millimeters)

Visual Acuity Distance
(feet / inches | meters)

Average Comfortable Viewing Distance
(feet / inches | meters)

 

0.75mm

8ft 6in | 2.58m

4ft 3in | 1.29m

1.00mm

11ft 3in | 3.44m

5ft 8in | 1.72m

1.25mm

14ft 1in | 4.30m

7ft 1in | 2.15m

1.50mm

16ft 11in | 5.16m

8ft 6in | 2.58m

1.75mm

19ft 9in | 6.02m

9ft 11in | 3.01m

2.00mm

22ft 7in | 6.88m

11ft 3in | 3.44m

2.25mm

25ft 5in | 7.74m

12ft 8in | 3.87m

2.50mm

28ft 2in | 8.60m

14ft 1in | 4.30m

2.75mm

31ft 0in | 9.45m

15ft 6in | 4.73m

3.00mm

33ft 10in | 10.31m

16ft 11in | 5.16m

4.00mm

45ft 1in | 13.75m

22ft 7in | 6.88m

5.00mm

56ft 5in | 17.19m

28ft 3in | 8.60m

6.00mm

67ft 8in | 20.63m

33ft 10in | 10.31m

7.00mm

78ft 11in | 24.07m

39ft 6in | 12.03m

8.00mm

90ft 3in | 27.50m

45ft 1in | 13.75m

9.00mm

101ft 6in | 30.94m

50ft 9in | 15.47m

10.00mm

112ft 10in | 34.38m

56ft 5in | 17.19m

 

Summary

 

LED pixel pitch holds great importance when you are planning to buy an LED display, especially for advertising. After all, bad image quality will leave a bad impact on your audience. To ensure that your LED screen offers the best video and image quality to its users, you need to make sure that you have the right resolution and the pixel pitch.

The quality of the image greatly depends on the pixel pitch. Smaller the pixel pitch, better the quality of the image. Likewise, the higher the pixel pitch, the less crisp and smooth the image will be.

Always choosing the smaller pixel pitch is not the way to go about it as well. A smaller pixel pitch does provide better image quality, but at the same time, it is very expensive. So, situations where you have a greater viewing distance, we suggest you opt for a higher pixel pitch. Greater distance will not allow your audience to see the empty spaces between each pixel, despite you using higher pixel pitch. You can use any of the above mythologies to calculate the optimal viewing distance along with the pixel pitch for your LED screen. For more information, refer to the table above as well. It will provide you with all the information you are looking for.

 

 

 

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