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How to Calculate LED Screen Size and Resolution

P2 LED indoor display

How to Calculate LED Screen Size and Resolution: From Fundamental Principles to Practical Applications

Understanding Core Concepts of LED Displays

When undertaking LEDディスプレイ projects, whether for indoor or outdoor applications, every aspect matters—from the overall system design down to the placement of individual display units and their dimensions. Indoors, displays positioned too low force viewers to bend over during use. Outdoors, displays designed too large result in significantly higher structural material costs after installation.

P2 LED indoor display

P2 LED indoor display, designed with podium height in mind

What Are Pixels and Resolution?

In the realm of LEDディスプレイ, pixels are the smallest units composing an image, each comprising three LED lamps: red, green, and blue. Resolution refers to the number of pixels contained horizontally and vertically across the display, typically expressed aswidth pixels × height pixels,” such as 1920×1080 or 3840×2160 (4K standard).

The Importance of Dot Pitch

Dot pitch is one of the most critical parameters for LED displays, defined as the distance between the centers of two adjacent pixels, measured in millimeters. Dot pitch determines:
  • Display content clarity
  • Optimal viewing distance
  • Physical screen dimensions
  • Overall project cost

Core Calculation Formulas Explained

28-meter-high outdoor LED display requires thicker support beams.

28-meter-high outdoor LED display requires thicker support beams.

Basic Calculation Formulas

Screen Length = Horizontal Pixel Count × Pixel Pitch
Screen Width = Vertical Pixel Count × Pixel Pitch
Display Area = Length × Width

Deriving Dimensions from Resolution

When the target resolution and selected pixel pitch are known:
Using 4K resolution (3840×2160) as an example:
  • P2.0 Screen: Length = 3840 × 0.002 = 7.68m, Width = 2160 × 0.002 = 4.32m
  • P1.5 Screen: Length = 3840 × 0.0015 = 5.76m, Width = 2160 × 0.0015 = 3.24m

Calculation Method for Viewing Distance

Minimum Viewing Distance

Minimum Viewing Distance = Pixel Pitch × 1000
(Pixel Pitch Unit: Meters; Result Unit: Millimeters)

Optimal Viewing Distance Range

Optimal Viewing Distance = Pixel Pitch × 2000 ~ Pixel Pitch × 6000
Example: P2.0 Screen
  • Minimum Viewing Distance: 2mm × 1000 = 2000mm = 2 meters
  • Optimal Viewing Distance: 4 meters to 12 meters

Practical Application Considerations

Installation Environment Factors

  1. Space Measurement: Accurately measure the width, height, and depth of the installation location
  2. Viewing Angle Requirements: Consider horizontal and vertical viewing angles
  3. Maintenance Space: Reserve sufficient rear maintenance access
  4. Load-Bearing Capacity: Verify wall or structural load-bearing capability

Content Compatibility Analysis

  1. Signal Source Resolution: Match input signal resolution standards
  2. Content Type: Different requirements for video, images, text, 等.
  3. Refresh Rate Needs: Select appropriate refresh rate based on content type
  4. Color Consistency: Ensure uniform color across the entire display

Common Issue Solutions

Resolution Mismatch Solutions

When source resolution conflicts with physical resolution:
  1. Use a video processor for scaling
  2. Adjust the source output resolution
  3. Implement pixel-to-pixel display mode

Screen Size Constraints

For limited installation space requiring high clarity:
  1. Select products with smaller dot pitch
  2. Use aspect ratios other than 16:9
  3. Consider non-rectangular or curved screen designs

Advanced Calculation Techniques

Module Size Calculation

Single module size = Module pixel count × Dot pitch
Example: 32×16 pixel P2.0 module
  • Length: 32×0.002=0.064m
  • Width: 16 × 0.002 = 0.032m

Cabinet Size Calculation

Cabinet Size = Number of Modules × Single Module Size + Bezel Size

Installation Accuracy Requirements

Ensure the following during installation:
  • Horizontal Error: ≤±1mm/meter
  • Vertical Error: ≤±0.5mm/meter
  • Flatness error: ≤±2mm / entire screen

Selection Recommendations & Best Practices

Select based on application scenarios:

  1. Indoor fixed installation: P1.2-P2.5, prioritizing color accuracy and refresh rate
  2. Outdoor advertising: P4-P10, prioritizing brightness and waterproofing
  3. Stage rental: P2.5-P4, prioritizing portability and quick installation
  4. Control rooms: P0.9-P1.5, prioritizing resolution and stability

Cost-Efficiency Optimization Strategies

  1. Mix screens with different pixel pitches
  2. Adopt variable resolution designs
  3. Consider future upgrade and expansion capabilities
  4. Select standardized products to reduce costs
Through these comprehensive calculation methods and selection guidelines, you can accurately determine the required LED screen size and resolution based on specific needs, ensuring successful project implementation and optimal display performance.

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