The Relationship Between LED Display Resolution, Pixel Pitch, and Screen Size
Created on 09.04
Introduction
When choosing an LED display, resolution, pixel pitch, and screen size are three key factors that work closely together.
Understanding their relationship can help you select the right LED display for your application while achieving the best balance between image quality and cost.
1. What Is Pixel Pitch?
Pixel pitch refers to the distance between the centers of two adjacent pixels, measured in millimeters.
For example:
- P1.5 = 1.5 mm
- P2.5 = 2.5 mm
- P5 = 5 mm
A smaller pixel pitch means more pixels can fit into the same area, resulting in higher pixel density and more detailed images.
2. How Are Resolution and Screen Size Related?
The resolution of an LED display depends on both its physical size and pixel pitch.
The basic calculation is:
Horizontal Resolution = Screen Width ÷ Pixel Pitch
Vertical Resolution = Screen Height ÷ Pixel Pitch
For example, a 4.8 m × 2.7 m P2.5 LED display has approximately:
1920 × 1080 pixels
This means that screen size and pixel pitch together determine the final native resolution.
3. Same Screen Size, Different Pixel Pitch
For the same screen size:
Smaller Pixel Pitch → More Pixels → Higher Resolution
For example:
Screen Size | Pixel Pitch | Resolution |
4.8 m × 2.7 m | P5 | 960 × 540 |
4.8 m × 2.7 m | P2.5 | 1920 × 1080 |
4.8 m × 2.7 m | P1.25 | 3840 × 2160 |
However, a smaller pixel pitch is not always necessary. The right choice should also depend on the viewing distance and application.
4. Choosing the Right Combination
Fine pixel pitch LED displays are generally suitable for close viewing applications, such as conference rooms, control rooms, and indoor commercial spaces.
Larger pixel pitch displays are often more suitable for large outdoor screens, billboards, and applications with longer viewing distances.
The key is to find the right balance between:
Screen Size + Pixel Pitch + Viewing Distance + Budget
Conclusion
Resolution, pixel pitch, and screen size are closely connected.
A smaller pixel pitch provides higher pixel density, while a larger screen can accommodate more pixels and achieve a higher total resolution.
When selecting an LED display, the goal is not simply to choose the smallest pixel pitch, but to choose the most suitable solution for the viewing distance and application.
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