What Is Pixel Pitch?

The distance between the centers of two LED pixels; the key technical parameter that determines the balance between resolution, viewing distance, and cost.

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What Is Pixel Pitch?

Pixel pitch is the distance, measured in millimeters, between the centers of two adjacent pixels on an LED screen. A P2.5 designation means there is a 2.5-millimeter distance between the centers of two pixels.

As this value decreases, more pixels fit into the same surface area, and resolution increases. Since an increase in the number of pixels directly affects module cost, pixel pitch is the technical parameter that most significantly impacts the budget in an LED screen project.

Relationship to Viewing Distance

Pixel pitch is not evaluated in isolation; the decisive factor is the viewer’s distance from the screen. Beyond a certain distance, the human eye cannot distinguish between adjacent pixels, and the image is perceived as a continuous whole. Selecting a finer pixel pitch beyond this threshold does not provide any visual benefit.

A rule of thumb widely used in the industry is as follows: the pixel pitch value in millimeters corresponds to the minimum comfortable viewing distance in meters. For a P2.5 screen, this value is approximately 2.5 meters.

Pixel Pitch	Comfortable Viewing Distance	Typical Use
P0.9 – P1.5	Starting at 1.5 meters	Control room, broadcast studio, meeting room for close-up viewing
P1.8 – P2.5	2–3 meters	Meeting room, corporate lobby, showroom
P2.6 – P4	3–5 meters	Conference hall, inside a store, mall corridor
P4 – P6	5–8 meters	High-ceilinged indoor spaces, factories, large halls
P6 – P10	8 meters and above	Outdoor facades, parking lot entrances, outdoor installations

Common mistake. The most frequent error in projects is selecting the thinnest possible pixel pitch without considering the viewing distance. Using a P1.5 screen viewed from eight meters away means spending the budget on a resolution that the eye cannot distinguish.

Other Factors Affecting Pixel Pitch

Content Type

Content heavy on text and tables requires a finer pixel pitch than content heavy on video.

Screen Surface Area

As the surface area increases, so does the viewing distance. A wider pixel pitch is sufficient for large screens.

Mounting Height

For screens mounted higher off the ground, the viewing distance naturally increases; this factor influences the selection.

Packaging technology

The finest pitch can be achieved with COB modules. For SMD modules, the lower limit is generally higher.

Budget balance

Each step in the pixel pitch significantly affects module cost; the selection should be evaluated in conjunction with viewing distance.

Camera recording

In studio applications where the screen is recorded by a camera, a finer pitch and a high refresh rate are required to prevent the moiré effect.

Pixel Pitch and Packaging Technology

The smallest feasible pixel pitch is directly related to the module’s packaging method. While the lower limit cannot fall below a certain value in SMD modules—due to the space occupied by the chip housing and solder pads—a higher density is possible in COB modules, where chips are mounted directly onto the board.

Technology	Protection Class	Typical Pixel Pitch	Key Feature
SMD	IP20 – IP30	P1.5 and above	The most common and economical packaging method
GOB	Around IP54	P1.2 and above	A resin-reinforced version of the SMD module
COB	IP54 and above	P0.9 – P1.9	Provides the highest image quality at close viewing distances

The differences between these technologies are discussed in detail on the COB, GOB, and SMD pages.

Resolution Calculation

The resolution of an LED screen is calculated by dividing the surface area by the pixel pitch. The calculation is performed separately for each axis, and the result provides the screen’s horizontal and vertical pixel counts.

For example, consider a P2.5 screen that is 4 meters wide and 2.25 meters high. When 4,000 millimeters is divided by 2.5 on the horizontal axis, the result is 1,600 pixels; when 2,250 millimeters is divided by 2.5 on the vertical axis, the result is 900 pixels. The screen’s resolution is 1,600 × 900.

If a P1.8 screen is selected for the same surface area, the resolution increases to 2,222 × 1,250. This increase in the number of pixels directly affects the module cost; therefore, the calculation must be evaluated in conjunction with the viewing distance.

Content compatibility. If the screen’s resolution does not match the resolution of the content to be displayed, the image is scaled, resulting in a loss of clarity. The screen’s actual number of pixels must be taken into account when planning content production.

Key Factors Beyond Pixel Density

Image quality cannot be explained by pixel pitch alone. When comparing proposals, the following technical values must also be considered:

Value	Meaning	Expected Range
Refresh Rate	The number of times the screen refreshes per second; determines banding in camera recordings	3,840 Hz and above
Gray level	The smoothness of color transitions; detail preservation at low brightness	14 bits and above
Contrast ratio	The difference between black and white; image depth	5000:1 and above
Color temperature	Whether white is perceived as cool or warm; must be adjustable	3,200–9,300 K
Viewing angle	Angle of view without color shift	140 degrees and above

If camera recording is to be performed, the refresh rate is a determining factor in studio and live broadcast applications. Screens with a refresh rate of 1,920 Hz or lower appear as horizontal bands on camera; for such projects, 3,840 Hz should be considered the lower limit.

Determining Screen Size

The choice of pixel pitch cannot be considered independently of the screen size. The size is determined based on the ability to read the content from the farthest point where the viewer is located.

For text-heavy presentation content, a common approach is to set the screen height to approximately one-sixth of the farthest viewing distance. In a meeting room with an eight-meter depth, this value corresponds to a screen height of approximately 1.3 meters. For video-heavy content, smaller dimensions may be sufficient.

To determine the appropriate technology, All-in-One systems and modular installation options can be evaluated together.

Implementation with Koz Teknoloji

At Koz Teknoloji, we base our pixel pitch selection on on-site viewing distance measurements taken during the discovery phase. The screen surface area, mounting height, and content type are evaluated together to determine the technology and pixel pitch best suited for the project.

You can explore our LED display solutions or browse our LED display products.

FAQ

Frequently Asked Questions

The most common technical questions about What Is Pixel Pitch?, answered briefly.

Ask our engineers

P2.5 indicates that the distance between the centers of two pixels on the screen is 2.5 millimeters. A screen with this value can be viewed comfortably from distances of approximately 2.5 meters or more.

More LED chips and driver components must be placed within the same surface area. The increase in the number of components directly affects the module's cost.

Since the viewing distance in outdoor applications is generally more than eight meters, values ranging from P6 to P10 are commonly preferred.

The surface area is divided by the pixel pitch in millimeters. On a P2.5 screen measuring 4,000 × 2,250 millimeters, the resolution is 1,600 × 900 pixels.

In apps that record the screen with a camera, a low refresh rate causes horizontal bands to appear in the image. In studio and live broadcast projects, 3,840 Hz is considered the lower limit.

For text-heavy presentations, it is common practice to set the screen height to approximately one-sixth of the maximum viewing distance. For video-heavy content, smaller dimensions may be sufficient.

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What Is Pixel Pitch?