What is the LED display Pixel Pitch?

If you are in the market for an LED video wall, “Pixel Pitch” is the single most important specification you will encounter. It dictates the resolution, the optimal viewing distance, and arguably most importantly, the price of your project.

You will often see model numbers like P1.2, P1.5, P2, P2.5, P3.9, P4.81, or P6, P8, P10.

But what do these numbers actually mean? Is a P1.2 screen always “better” than a P3.9 screen?

In this comprehensive guide, we will demystify the technical jargon.

We will explain the physics of pixel pitch, how to calculate the exact resolution you need, and how to choose between common sizes like P1.2, P2.5, and P3.9 to maximize your budget.

The Definition: What Exactly is Pixel Pitch?

Pixel Pitch (also referred to as “dot pitch”) is the physical distance, measured in millimeters, from the center of one LED pixel to the center of the adjacent pixel.

· The “P” stands for Pitch.

· The number indicates the distance in Millimeters.

A “Pixel” on an LED wall is typically a cluster of three diodes (Red, Green, and Blue) mounted together.

Visualizing the Difference

· P1.2: The pixels are extremely close together (1.2mm apart). This creates a dense, smooth surface.

· P10: The pixels are spaced far apart (10mm apart). You can see the black gaps between the lights if you stand close.

The Golden Rule of LED Pricing

There is a direct correlation between pitch and price:

1. Lower Pixel Pitch (e.g., P1.2) = Higher Pixel Density = Higher Resolution = Higher Cost.

2. Higher Pixel Pitch (e.g., P10) = Lower Pixel Density = Lower Resolution = Lower Cost.