1920Hz: Ideal for Outdoor Advertising

The 1920Hz refresh rate is widely used in outdoor SMD/LED screens , particularly for digital out-of-home (DOOH) applications like advertising billboards and video walls. Since outdoor viewers typically observe screens from a distance ranging from 10 to 200 meters, 1920Hz is generally sufficient for delivering a visually acceptable experience. It also offers a more budget-friendly option, considering the balance between performance and cost of the control ICs.

3840Hz: Best for Indoor and Close-Range Viewing

For indoor applications such as live events, concerts, and stage performances where audiences are closer to the display and often use cameras or smartphones to capture footage a higher refresh rate of 3840Hz is recommended. This level helps minimize flicker in recorded videos and improves visual clarity. It's especially essential for fine-pitch displays (below 2.5mm), GOB (Glue on Board), COB (Chip on Board) technology, and 3D naked-eye SMD/LED screens, where precision and quality is key.

7680Hz: Designed for Virtual Production and High-End Media

In high-end productions involving 3D SMD/LED screens, camera tracking systems, or virtual sets, a 7680Hz refresh rate ensures seamless synchronization with camera movements. This ultra-high refresh rate reduces artifacts like moiré patterns and scan lines, producing clearer footage that closely resembles what the human eye naturally perceives. It's especially useful in media production, filmmaking, and promotional content where image quality is critical.

Summary

1920Hz : Cost-effective and suitable for outdoor, long-distance viewing.

3840Hz : Recommended for indoor, short-range use, particularly when filming is involved.

7680Hz : Optimal for virtual production, 3D displays, and professional media capture.

Choosing the right refresh rate depends on the specific needs of your application, including viewing distance, content type, and whether the display will be filmed.
In Pakistan GKGD premium 3840Hz and 7680Hz high refresh rate modules are exclusively available at Al-Noor SMD Screens.

The P3.91 SMD screen is a type of LED display module commonly used for rental setups due to its durable design and easy installation. It's suitable for both indoor and outdoor environments, making it ideal for events of all kinds.

What Does "P3.91" Mean?
It delivers two meanings.

1) The "P" stands for pixel pitch, which is the distance between the center of two adjacent pixels. The number "3.91" means the pixel pitch is 3.91 millimetres, simply gap between two pixels, affecting image clarity and resolution.

2) This also implies the optimal viewing distance is about 3.91 meters at that range, the screen appears sharp, and individual pixels are no longer noticeable.

If you're still unsure about pixel pitch and how it works, click here to explore the concept in more detail.

Module Dimensions:
The GKGD P3.91 module measures 250mm x 250mm, offering a compact and modular design ideal for screen setups.

High Refresh Rate:
This screen supports a refresh rate of up to 7680Hz, ensuring smooth and flicker-free video playback perfect for live events and camera-friendly environments.

Composition of the GKGD P3.91 SMD Screen

The complete display system is composed of the following components:

1.    Die-Cast Aluminium Cabinet (500mm x 500mm) lightweight and durable structure for easy installation and transport

2.    P3.91 LED Module provides the visual output with high resolution and brightness

3.    Power Supplies typically G-Energy 5V-40A units, ensuring stable power delivery

4.    Receiving Cards from NovaStar or Huidu, responsible for data reception and image rendering

5.    Video Processor NovaStar or Huidu processors used for signal input and screen control

6.    Power Cables to connect and distribute electrical power across modules

7.    Data Cables for transferring video data between modules and control systems

Can I Start a Business with the GKGD P3.91 Rental SMD Screen?

Yes, you can absolutely start your own rental business using the GKGD P3.91 SMD screen. Once you invest in the display setup, you can offer screen rental services for various events such as weddings, concerts, corporate functions, exhibitions, the demand for LED screens in the event industry offers strong potential for quick and profitable returns. Although the initial investment can be significant, the demand for high-quality LED/SMD displays at events makes this a high-return business opportunity.

The P3.91 screen is designed for easy transport, quick setup, and dismantling, making it ideal for on-demand installations at different venues.
Conclusion

The GKGD P3.91 SMD screen is a smart choice for Pakistan’s growing event rental market. Its high resolution, portability, and ease of setup make it ideal for all kinds of events. With strong demand and the potential for high returns, it's a solid investment for anyone looking to start a rental business.

LCD displays are unibody screen, typically available in fixed sizes and are generally not modular based display.
SMD/LED displays, on the other hand, are modular, meaning they are composed of multiple individual components that can often be repaired or replaced independently.

Let’s break down the main components of an SMD/LED display and discuss whether they are repairable or replaceable:

1. Modules

The module is a core component of any LED/SMD screen. It typically includes:

1) A plastic or alloy housing

2) A PCB (printed circuit board)

3) Lamp beads or pixels (LEDs)

Many parts of the module, such as ICs, electrolytic capacitors, and LED lamp beads, are repairable. However, if the module suffers structural damage, a short circuit, or has reached the end of its service life, it is generally recommended to replace the entire module.

2. Power Supply

Power supplies in SMD/LED displays come in various voltage ratings and are prone to damage due to voltage fluctuations. While repairs may be possible, it is not recommended due to safety and reliability concerns. Replacing the power supply is the safer and more reliable option.

3. Sending Cards

Sending cards manage input data (USB Flash Drive, HDMI, or Wi-Fi via mobile app) and transmit it to receiving cards. They often have onboard storage (e.g., 8GB or 16GB).

In the event of failure, sending cards are usually replaced, not repaired, as they are complex components.

4. Video Processors

Video processors are advanced versions of sending cards with some differences:

1) No onboard storage

2) Multiple output ports

3) Control panel interface

4) Support for multiple displays and live streaming

While video processors are typically long-lasting, repairs are possible if the damage is not severe. However, if repair costs exceed 50% of the replacement cost, it is more cost-effective to replace the unit.

5. Receiving Cards

Receiving cards take data from the sending card or video processor and transmit it to the modules. If a receiving card malfunctions, it is replaced, not repaired, due to its intricate design.

6. Power Cables

Power cables deliver electricity to all components within the display system. They are specially designed with connectors and pins suited to different modules and power sources. Any damaged or faulty power cable must be replaced.

*Always use high-quality copper cables for reliability and safety.

7. Data Cables

Two types of data cables are commonly used in SMD screens:

1. 16-pin flat cables – transmit data from receiving cards to modules.
2. LAN cables (Cat 6) – transmit data from sending cards or video processors to receiving cards.

Both types of cables, along with their connectors, are fully replaceable if any issue arises.

Conclusion:

SMD/LED displays are largely modular and serviceable, making repair and replacement of individual parts feasible and cost-effective.
For optimal performance and safety:

• Repair components where practical.
• Replace when repair is not viable or cost-effective.
• Always use quality materials and seek expert service when necessary.

Keep in mind these displays are modular based means number of modules are joined together to make customizable display. The key factor of considering these displays are their customizability and commercial level used.

1) GKGD INDOOR P1.25:

1.    P1.25 is most premium high-end model of indoor SMD display it has high resolution 256 (w) × 128 (h) Pixels results in high pixels density i-e 32,768 dots/pixels in one module.

2.    The most important aspect is that the image remains sharp even at close distance. Model labelled P1.25 has a minimum viewing distance of 1.25 meters (approximately 4 feet), ensuring clear picture quality at that range.

3.    This is most expensive model among others and rarely install even government level.

 2) GKGD INDOOR P1.53:

1.    This model has slight difference compared to the P1.25 when comes side by side in real life and also belongs to the premium indoor category. It offers a high resolution of 208 (W) × 104 (H) pixels, resulting in a dense pixel count of 21,632 dots / Pixel per module.

2.    Its minimum viewing distance is 1.53 meters (approximately 5 feet), where individual pixels are no longer visible and the image appears sharp and clear.

3.    The P1.53 indoor model is still relatively expensive, but it is more affordable than the P1.25 indoor and mostly install at government level.

3) GKGD INDOOR P1.86:

1.    This is also fall in premium category but moderate in picture quality when compare to P1.25 and P1.53 its image quality is not as sharp as above models because its resolution 172 (w) × 86 (h) pixels resulting pixel density 14,792 dots / pixels per module.

2.    The P1.86 indoor model has a minimum viewing distance of 1.86 meters (approximately 6 feet), at which point the pixels blend seamlessly, resulting in a sharp and clear image.

3.    The P1.86 model is more affordable than the P1.25 and P1.53, yet it offers an excellent balance between cost and performance. Many users prefer the P1.86 over the P1.53 due to its competitive pricing and satisfactory video quality.

4) GKGD INDOOR P2.5

1.    P2.5 indoor most demanding and most selling model this model falls in mid premium category it has less clarity as compare to P1.86, P1.53 and P1.25 but
Why P2.5 is most demanding model?
This model is cost effective yet provide premium indoor visual experience in large indoor screens.

2.    Its resolution 128 (w) × 64 (h) pixels resulting pixel density 8129 dots / pixel in one module.

3.    The optimal viewing distance of P2.5 indoor model is 2.5 meter or approximately 8 feet form that distance no pixels or dots are visible and deliver sharp image at that distance.

5) GKGD INDOOR P4

1.    This model falls in economic category and mostly installed where the viewers are at good distance.

2.    Its resolution 80 (w) x 40 (h) pixels results in pixel density 3200 pixels/dots in one module.

3.    P4 indoor deliver clear image at distance of 4 meter approximately 13 feet.

4.    P4 indoor is cost effective indoor model and mostly installed by clients who have tight budget.

6) GKGD INDOOR P5:
 

1.    This is also economic category indoor model and lower resolution than P4 and higher models.

2.    There is no significant price difference between P4 and P5 both are cost effective solution.

3.    If you want to see clear image on P5 you must have to maintain distance of 5 meter or approximately 16 feet, at that distance no pixels / dots are visible picture remain sharp at that distance.

4.    This is cheapest model among all yet quality is same as higher models

5.    Its resolution 64 (w) x 32 (h) pixels results in 2,048 pixels or dots in one module.

Conclusion:
When choosing your indoor SMD/LED screen, consider factors like the typical viewing distance, desired image clarity, and budget constraints. By aligning these factors with the specifications of each model, you can select a display that meets your requirements and provides an optimal viewing experience.