Choosing an LED display is easier when you start with the space and the audience—not with a product code. Pixel pitch, viewing distance, brightness, screen size, and installation conditions work together. This guide explains how to compare them and prepare a useful specification before requesting a quotation.
1. Start with the viewing distance
Pixel pitch is the distance, in millimeters, between the centers of two neighboring pixels. A smaller pitch packs more pixels into the same area, so fine text and detail remain clearer when viewers stand close. A larger pitch can work well when the screen is viewed from farther away.
As a first estimate, some buyers use a simple rule of thumb: pixel pitch in millimeters multiplied by about 1.2 gives a comfortable viewing distance in meters. Treat this only as a starting point. Audience eyesight, content, screen size, and viewing angle all affect what looks acceptable. Planar explains several viewing-distance methods and why the result is application dependent in its pixel pitch guide.
For example, a P2.5 display may suit a lobby or retail area where people approach the screen, while a P6 or P10 screen may be more practical for a large outdoor sign viewed across a road. These are examples, not fixed rules: confirm the actual closest and typical viewing distances before choosing.
2. Match the pixel pitch to the content
Consider what the screen must show. Video and large graphics can often be viewed comfortably at a coarser pitch than small text, data dashboards, or detailed product images. Also calculate the screen’s native pixel resolution: divide the active width and height in millimeters by the pixel pitch. The result helps confirm whether the display can show your planned content at useful detail.
Do not automatically select the smallest pitch available. Finer pitch typically means more LEDs and higher resolution per square meter, which can raise the purchase and maintenance cost. The goal is a clear image at the real viewing distance, with enough resolution for the intended content.
3. Choose brightness for ambient light
Brightness is measured in candelas per square meter (cd/m²), also called nits. An indoor screen in a controlled lighting environment has different needs from a screen facing daylight. For outdoor installations, consider direct sunlight, screen orientation, shadows, and whether the display will operate at night. Excess brightness can be uncomfortable and waste energy, so automatic or scheduled brightness control can be useful.
Ask the supplier for the recommended operating brightness, maximum brightness, and any conditions attached to those figures. Compare like-for-like specifications and request a demonstration or project reference when image quality is critical.
4. Confirm indoor or outdoor construction
Check the installation environment before comparing models. Outdoor projects may need protection against dust and water, suitable cabinet materials, drainage, ventilation, and a structural plan for wind loads. Indoor projects may prioritize close viewing, quiet operation, service access, and integration with the room design.
For fixed outdoor advertising, review LED billboard options and confirm the required protection rating for the complete installation. For indoor or large-format projects, compare the LED video wall range. The IP Code classifies enclosure protection; see the scope of IEC 60529 and ask which parts of the assembled display the stated rating covers.
5. Plan the size, structure, and service access
Measure the available width and height, viewing angle, mounting surface, power supply, cable routes, and access for installation and maintenance. Decide whether technicians can reach the display from the front or rear. For unusual dimensions or curved and creative installations, review custom LED display solutions early so the screen structure and pixel layout can be designed together.
6. Prepare a clear RFQ
To get a meaningful recommendation, share:
- Indoor, outdoor, or semi-outdoor location and city or climate
- Screen width and height, plus closest and typical viewing distances
- Main content: video, text, live camera, graphics, or mixed use
- Operating hours, ambient light, and required brightness behavior
- Mounting method, service access, and any structural constraints
- Control system, input sources, and installation responsibilities
With these details, a manufacturer can propose a suitable pitch, cabinet configuration, power estimate, and maintenance approach. Contact the TSLED team with your project brief to discuss the right LED display for your application.
Quick checklist
Choose pixel pitch from viewing distance and content detail; brightness from ambient light; protection and cabinet design from the environment; and screen size from the space and required resolution. A project-specific recommendation is more reliable than selecting a display by pitch or price alone.