2018年1月21日星期日

How to choose proper pixel pitch for an led display screen

Pixel pitch is one of the important technical parameters of LED display. What is pixel pitch? How to use it to choose LED display screen? TCB technical engineer team give a specific answer of these questions. Please look at the following content.

What is pixel pitch?


Pitch is the distance between each pixel on your sign. It directly reflects the pixel density. These two parameters are the physical property of an LED display. Information capacity is the information-carrying quantity unit of 1sqm pixel density. The closer the pitch, the higher pixel density is and per unit area can display more information about a one-time capacity, which will be more suitable for short distance viewing. In the contrast, it will suitable for long distance viewing.


How to choose pitches of LED Display



There are two related factors to select a LED screen pitch. 


1. The viewing distance of the LED display.
Where you are going to install the screen, for how far people stand to watch the screen. This is one of an important factor for us to determine the pixel pitch.
In general, we often use this formula (Best viewing distance= dot pitches/ (0.3 to 0.8)) to figure out an approximate distance. For example, the best viewing distance of a P10mm sign is 13m-34m. When you stand in a short distance to watch the LED screen, you can see the pixels clearly. But if you stand in a long distance, you can barely identify the detailed features. That’s how we conclude an approximate pixel pitch number.


For outdoor LED display, we usually adopt P10mm or P8mm for a closer distance and P12mm or P16mm for a longer distance.

For indoor LED display, we usually recommend P4 to P6. For longer distance we may recommend P7.62 or P10mm.
2. The total pixel resolutions of LED display.
Most of videos are VCD format, the resolution is 352*288 and DVD format is 768*576. Therefore, we usually recommend the lowest resolution is 352*288, which will display a better effect than the definition lower than the minimum request.
Speak of single color or tri-color LED display that mainly used for showing the word or pictures; we may have a lower demand of resolution. According to the screen size, we can choose the pixel pitch by the amount of text.
We usually choose the closer pitch and the higher resolution for a clearer visual effect. However, TCB will help you take all these comprehensive factors into account including the cost, customer’s demand etc, in order to give customers the best solution.

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