LED display screens are everywhere in life, ranging from red character screens at store doors to outdoor full-color advertising screens. However, laymen may not understand the professional terms of LED display screens. The editor of Oika LED display screen explains from an insider's perspective what "dot pitch" is in easy-to-understand language.

1. What is dot spacing?

Dot pitch (dot pitch), pitch (pitch), and pixel pitch (pixel pitch), these three professional terms have the same meaning. They refer to the distance from the center of one lamp bead to the center of the adjacent lamp bead in the LED display, unit is millimeters.

In the industry, the letter "P" in the word "pixel pitch" is also commonly used to refer to the pixel pitch as abbreviation. For example, a screen with a 2.5mm pixel pitch is called P2.5, and a screen with a 3mm pixel pitch is called P3. Other point spacings, and so on. In addition, the dot pitch is often combined with the product series name.

With the advancement of SMD and COB lamp bead packaging processes, the current point spacing can be as small as less than 1mm and as large as more than 10+mm. After more than ten years of development, Oika has strong R&D capabilities and accumulated rich engineering experience. Its product point spacing covers a full range of 2.5mm~10+mm, and it is in a leading position in the industry.

2. The importance of point spacing

The smaller the dot pitch, the greater the pixel density, the greater the resolution, the closer the viewing distance, the more delicate the displayed image, and the better the final visual effect for people. Of course, the cost is relatively high

On the contrary, the larger the dot spacing means the smaller the pixel density, the smaller the resolution, the farther the viewing distance, the displayed image will be less delicate. Finally, in order to obtain better and more delicate visual effects with a large dot spacing, Viewing distance must be extended. Of course, the cost is also relatively low.

3. How to choose the point spacing

Conversion of viewing distance and point spacing

From the above discussion, it can be seen that the size of the dot spacing and the viewing distance directly affect people's visual effects.

Indoors, the spatial viewing distance itself is limited. In order to achieve better and more delicate visual effects, a smaller point spacing is generally selected. Outdoors, there is no limit to the spatial viewing distance, and you can also choose a smaller dot spacing. However, for lower cost and higher cost performance, a larger dot spacing is generally chosen.

In the end, you may ask, knowing the viewing distance, how do I know the appropriate dot spacing?

In fact, there is no absolutely unified standard formula in the industry for the conversion of viewing distance and point spacing. And everyone’s subjective visual experience is different. The editor below gives the conversion formula calculated by the Oica display for reference: (distance unit: meters)

Minimum viewing distance (distance that can display smooth images) = point spacing (mm) ×1000/1000

The most suitable viewing distance (the distance that can display a highly clear picture) = dot pitch (mm) ×3000/1000

Farthest viewing distance = screen height (meters) × 30