How to choose LED screen pixel pitch

What the pitch number tells you

Pixel pitch is the distance between neighbouring pixel centres, usually stated in millimetres. A smaller pitch places more pixels within the same physical area. This can help with fine text and close viewing, but it does not create detail that is missing from the source content.

Read the exact pitch in the datasheet rather than inferring it from the model name. For example, the V500 P1.25 sheet states a 1.25 mm pitch, while a rental model called SP1.5 states 1.5625 mm. The model name is a catalogue label; the specification is the number to use for comparison.

Start with the nearest viewer and the content

Describe the closest position from which the display must be useful. A lobby visitor reading a small schedule, an audience watching stage video and a driver seeing a roadside advertisement have different requirements. Content size, contrast, eyesight and the time available to read all matter alongside pixel pitch.

A viewing-distance rule is a starting point for comparison, not a guarantee that every viewer will find the image equally smooth. For a purchase decision, compare representative content at the intended distance. Include the smallest text you actually plan to show, rather than judging the screen only from large moving images.

Check the actual cabinet grid

Use the published cabinet resolution to calculate a real wall. The V500 P1.25 datasheet lists a 500 × 500 mm cabinet with 400 × 400 pixels. In a worked example using four cabinets across and two down, the wall is 2000 × 1000 mm and 1600 × 800 pixels. These are calculated totals from the cabinet dimensions and resolution, not a separate product size.

Check both the physical shape and the pixel dimensions against the intended content. If the source and screen have different aspect ratios, the content workflow must account for scaling, cropping or unused screen area.

Pitch does not replace the environment specification

The same nominal P3.91 appears on very different products. SP3.9 is listed with front and rear IP30 protection; HH3.91 lists IP66 on both sides; TS3 lists IP20 and a transparent construction. These products are not interchangeable simply because the pitch number is similar.

For a window display, compare transparency and the light reaching the screen. For a weather-exposed installation, check the exact model's protection rating and mounting arrangement. For rental work, include the handling and maintenance route in the selection.

A useful selection brief

• Where the screen will be installed and whether it is exposed to weather.
• The nearest viewing position and the smallest content that must be readable.
• The available width, height and space for maintenance.
• The actual cabinet or complete-screen model and its published resolution.
• The content source and its aspect ratio.

Use the pixel-pitch pages to compare models in the same pitch group, then use the wall calculator to check a layout. When you request a quotation, include these requirements so the recommendation can be tied to an actual model rather than a pitch label alone.