When discussing the resolution of LED displays, we often refer to the "P" value, which stands for pixel pitch. This measurement tells us the physical distance between adjacent pixels on the screen, typically in millimeters. For example, P2.5 indicates that the distance between each pixel is 2.5 millimeters, P3 is 3 millimeters, and P4 is 4 millimeters.  

The clarity of the display is directly related to its pixel pitch. A smaller pixel pitch means that more pixels can fit within the same area, resulting in higher image quality. Take P3 and P4 as examples: since P3 has a smaller pixel pitch, it can display more details than a P4 screen of the same size, leading to clearer images. Specifically, a P3 display can accommodate around 111,111 pixels per square meter, while a P4 display holds approximately 62,500 pixels.

However, this doesn't mean that P3 is always the best choice. The suitability of the screen also depends on the viewing distance. Typically, P3 screens are ideal for viewing distances of 3.5 to 10 meters, whereas P4 screens are more suitable for 5 to 13.5 meters. If viewers are too close to the screen, they may notice individual pixels, leading to a grainy image. On the other hand, if the viewing distance is too far, the gaps between pixels can blur the details. Therefore, it's important to consider the intended viewing distance when choosing an LED display.

Different application scenarios also affect the choice of pixel pitch. For example, P2.5 and P3 screens, with their smaller pixel pitches, are ideal for indoor, close-range viewing environments like conference rooms or shopping malls. In contrast, P4 screens are commonly used for outdoor or large-scale venues like billboards or stadiums, where the viewing distance is greater, and P4 provides a good balance between clarity and cost.

Cost is another important factor. Generally, smaller pixel pitch screens are more expensive due to the more complex manufacturing processes and higher material and production costs. Therefore, when selecting an LED display, it’s essential to balance performance, viewing environment, and budget to determine the most appropriate specifications.