Purpose: To select the appropriate LED display pixel pitch (P value) and brightness based on the viewing distance and application scenario.

Core Principle: The farther the viewing distance, the larger the acceptable pixel pitch. For close-up viewing and detailed images/text, a finer pixel pitch is preferred. For long-distance viewing and brightness-focused applications, a larger pixel pitch can be used to achieve higher transparency and cost efficiency. The final selection should be matched to the actual application environment.

1. Indoor Close-Viewing Applications

Meeting Rooms / Control Centers / Showrooms

Typical Viewing Distance: 1–4 m

Recommended Pixel Pitch: P1.2 / P1.5 / P1.8 / P2.0 / P2.5 / P3

Key Matching Considerations:

• At close viewing distances, individual pixels are more noticeable, so a fine pixel pitch is essential for clear and detailed images.

• For detailed graphics, data dashboards, and video conferencing, priority should be given to resolution, grayscale performance, and color uniformity.

• Indoor ambient lighting is generally controllable, so a brightness level of 600–1,200 nits is typically sufficient. Key considerations include front maintenance and cabinet flatness/seam uniformity.

• For applications such as theaters, cinemas, and XR studios, also consider P3 or BT.2020 color gamut coverage.

2. Outdoor/Semi-Outdoor Medium- to Long-Distance Applications

Advertising Displays / Plazas / Transportation Hubs

Typical Viewing Distance: 5–30 m and beyond

Recommended Pixel Pitch: P3 / P4 / P5 / P6 / P8 / P10

Key Matching Considerations:

• As the viewing distance increases, a larger pixel pitch can be used without significantly affecting the viewing experience, offering better cost efficiency.

  Under strong outdoor ambient light, brightness should generally be ≥5,000 nits, with particular attention to IP65 protection, thermal management, and overall system reliability.

• For video advertising and information display applications, priority should be given to brightness, contrast, and reliability.

• For long operating hours, energy efficiency should also be considered. In hot environments, pay attention to the thermal management of the modules, power supplies, and cabinets. Where there are significant temperature fluctuations, breather vents can help balance internal and external pressure caused by temperature changes.

3. Building Façade Lighting / Glass Curtain Wall Displays

Prioritizing Visual Appeal and Overall Transparency

Typical Applications:
Glass curtain walls, atriums, and exterior media façades of office buildings, commercial complexes, hotels, and landmark buildings.

Recommended Product Type:
Grille screens (bar-type LED displays), typically using large pixel pitches such as P15–P50 or even larger.

Matching Logic:

• The typical viewing distance is usually 30 m or more, making individual pixels less noticeable to the human eye. Therefore, a fine pixel pitch is generally unnecessary.

• The core requirement in these applications is not fine-detail text and graphics, but rather architectural integration, aesthetic appeal, and nighttime visual impact. A larger pixel pitch can therefore be used to achieve higher transparency.

3.1 Overall Transparency of Glass Curtain Walls — A Key Performance Indicator

• The display should generally achieve a transparency rate of ≥60%. High-quality transparent LED displays or film-type LED displays can achieve 70%–90% transparency, helping to ensure:

• Natural daylight inside the building is preserved, avoiding excessive darkening of indoor spaces during the day;

• The building's daytime appearance remains intact, with the curtain wall maintaining its open and clean visual effect;

• A larger pixel pitch and lower-density LED bars/panels generally result in higher transparency. This is one of the key trade-offs when selecting an LED display for glass curtain wall applications.

• The installation principle is to fit the display closely to the curtain wall without damaging the original building structure, while keeping the display lightweight and slim.

3.2 Visual Appeal of Building Façade Lighting — The Core Value

• The focus is on media façades and architectural lighting effects, emphasizing color performance, dynamic video content, and visual coordination with the building's contours and floodlighting, rather than fine text display.

• The display can be customized to match architectural structures, including irregular shapes, customized configurations, and individually controlled pixels, enhancing the building's nighttime identity and commercial presentation value.

• Brightness should balance daytime visibility (≥4,000–5,000 nits to overcome ambient light) with comfortable nighttime viewing without excessive glare, with support for automatic brightness adjustment and time-based brightness control.

3.3 Key Selection Considerations for Building Façade Lighting / Glass Curtain Wall Displays

4. Highways and Coastal Cities — Prioritizing Wind Permeability Without Sacrificing Opacity

Typical Viewing Distance: 10–30 m and beyond

Recommended Pixel Pitch: P15 / P25

Key Matching Considerations:

• As the viewing distance increases, a larger pixel pitch can still provide sufficient image quality while offering better cost efficiency.

• Under strong outdoor lighting conditions, brightness should be ≥8,000 nits, with particular attention to IP65 protection, thermal management, and overall stability.

• These applications are primarily used for video advertising and information display. In high-wind environments, the key advantage is allowing wind to pass through the display while maintaining sufficient contrast and image quality.

• For coastal applications, consider the salt and alkali resistance of the LED lamps and other components to ensure long-term reliability.

In short: The essence of pixel pitch selection is “Viewing distance determines the required image clarity, while the application determines the priority.” For building façade and glass curtain wall applications, transparency and visual appeal take priority over pixel density.