LED Displays
How to Choose LED Display Screens
LED display screens have become the default choice for churches, conference centres, hotels and outdoor events across Kenya, but selecting the right pixel pitch, brightness and configuration determines whether the investment delivers a sharp, reliable image or a disappointing one. This guide explains the technical decisions in plain terms.
What pixel pitch actually means
Pixel pitch is the distance in millimetres between the centres of adjacent LED clusters. A smaller number means more pixels packed into the same area, producing a sharper image at close viewing distance but at higher cost. A P3.9 panel has pixels 3.9mm apart, while a P1.5 panel packs pixels far more densely and costs considerably more per square metre.
Matching pixel pitch to viewing distance
A commonly used guideline is that the minimum comfortable viewing distance in metres is roughly the pixel pitch in millimetres. So a P4 screen should be viewed from at least about 4 metres, while a P2.5 screen holds up to viewers as close as 2.5 metres. Screens viewed closer than this show visible pixel structure that reduces perceived image quality.
| Pixel pitch | Minimum viewing distance | Typical use |
|---|---|---|
| P1.5 - P1.9 | 1.5m - 2m | Boardrooms, control rooms, close-viewing lobbies |
| P2.5 - P3.0 | 2.5m - 3m | Conference halls, church stages, retail displays |
| P3.9 - P4.8 | 4m - 5m | Event stages, large auditoriums |
| P6 - P10 | 6m - 10m+ | Outdoor screens, large venues, stadium displays |
Indoor versus outdoor panels
Outdoor LED panels require far higher brightness to remain visible in direct sunlight, typically 4,500-6,500 nits compared to 600-1,200 nits for indoor panels. Outdoor units also need an IP65 rated front and IP54-rated rear enclosure to withstand rain and dust, while indoor panels have no such sealing and must never be installed in exposed locations.
Common costly mistake
Installing an indoor-rated panel outdoors, even under a canopy, exposes it to humidity and dust that will damage the driver ICs within months. Always confirm the IP rating matches the installation environment before purchase.
Brightness and ambient light
Brightness needs to match the ambient light of the venue. A church sanctuary with large windows needs brighter panels than a dark auditorium with blackout curtains. Running a panel at maximum brightness constantly also shortens LED lifespan and increases power draw, so specify enough headroom that the screen typically runs at 60-70 percent brightness rather than maxed out.
Refresh rate and camera use
If the screen will be filmed for live streaming or broadcast, refresh rate matters. A refresh rate of at least 3,840Hz avoids visible flickering or banding on camera, which is a common oversight when screens are chosen purely for live audience viewing and then used for recorded content.
Cabinet size, curvature and modularity
LED walls are built from individual cabinets, commonly 500mm x 500mm or 500mm x 1000mm, that tile together to form the full display. This modularity allows curved installations and custom aspect ratios, but also means the total screen dimensions should be planned in cabinet-size increments rather than an arbitrary size.
Processing and control
A video processor or LED controller converts an HDMI or SDI input into the format the panels need, and handles brightness scaling, colour calibration between panels and multi-screen layouts. Budget for a processor rated for the full resolution and refresh rate of the installed wall; an undersized processor produces visible tearing or colour banding.
Power and structural considerations
LED walls draw significant power, typically 300-800 watts per square metre at full white brightness, so electrical planning must include dedicated circuits and, for larger walls, three-phase power. Structurally, indoor walls are usually ground-supported or wall-mounted on steel frames, while outdoor walls need engineered mounting rated for wind loading.
| Screen size (approx.) | Pixel pitch | Indicative KES budget |
|---|---|---|
| 2m x 1.5m indoor | P2.9 | 900,000 - 1,600,000 |
| 4m x 2.5m indoor | P2.5 | 3,500,000 - 5,800,000 |
| 6m x 3m outdoor | P4.8 | 6,500,000 - 10,500,000 |
| 3m x 2m boardroom | P1.8 | 3,200,000 - 5,000,000 |
Checklist before you buy
- Confirm indoor or outdoor rating matches the installation environment
- Calculate pixel pitch against the closest expected viewer distance
- Verify brightness suits ambient light conditions
- Check refresh rate if the screen will be filmed
- Confirm processor capacity matches wall resolution
- Plan dedicated electrical circuits and structural mounting
- Ask for a warranty period on LED modules and power supplies
Frequently asked questions
What pixel pitch is best for a church stage screen?+
Most church stages use P2.5 to P3.9 panels, giving a sharp image for congregants seated a few metres back while keeping cost manageable. The exact choice depends on the distance from the stage to the nearest seating row.
Can an LED wall be used both indoors and outdoors?+
Only outdoor-rated panels with IP65 front and IP54 rear protection can safely handle exposure to rain, humidity and dust. Indoor panels lack this sealing and will fail if used outdoors.
How long do LED display panels typically last?+
Quality LED panels are commonly rated for 60,000 to 100,000 hours to half brightness, which translates to many years of daily use, provided the panel operates within its rated brightness and power specifications.
Is an LED wall better than a projector for a large hall?+
LED walls offer higher brightness, better performance in ambient light, and no bulb replacement costs, but at a higher upfront price than projection. For halls with controlled lighting, projection can still be the more economical choice.
How much power does a typical LED video wall use?+
A mid-sized indoor wall of about 3m x 2m typically draws 2,000-4,000 watts at full brightness, though average consumption during normal content playback is usually 30-50 percent lower.
Do LED walls need special maintenance?+
Regular dust removal from ventilation gaps, periodic checks of power supplies and occasional module recalibration keep an LED wall performing well. Outdoor walls also need periodic inspection of seals against moisture ingress.