Here are some frequently asked questions.
What is LED?
LED stands for Light Emitting Diode. This semiconductor device emits light when an electric current is passed through it. LEDs are used in a wide variety of applications, including lighting, digital displays, and indicator lights. They are known for their efficient energy consumption, long lifespan, and compact size, making them a popular choice for many applications. LEDs are available in various colours, including red, green, blue, and white, and are used individually or in arrays to create a variety of lighting effects. Those types of LED can be surface mounted or assembled on electronic boards as discrete components.
What is RGB?
RGB stands for Red, Green, and Blue. It is a colour model used in electronic displays, such as computer monitors, televisions, and LED displays. In the RGB colour model, colours are created by mixing different intensities of red, green, and blue light.
The RGB colour model is widely used because it is additive, which means that the more colours are added, the brighter and more vibrant the resulting colour becomes. This makes it well-suited for electronic displays, where colours must be bright and vibrant.
What is pixel pitch and display resolution?
The distance between its diodes determines the resolution of an LED display, called the pixel pitch. The pixel pitch is measured from the centre of each group of red, green, and blue diodes to the centre of the neighbouring group. A smaller pixel pitch results in a higher resolution, allowing more pixels to be packed into a given area.
For example, if an LED display has a pixel pitch of 1 cm, it can accommodate 100 x 100 pixels per square metre of the display. The resolution of a display is usually expressed as a pair of numbers indicating its width and height in pixels. So, a 6 x 8-meter LED screen with a 1 cm pixel pitch has a resolution of 600 x 800 pixels.
LED displays are available in pixel pitches, from several centimetres to as small as a single millimetre. The smaller the pixel pitch, the higher the resolution, and the greater the detail and clarity of the displayed content.
How does an LED display work?
LED screens use an array of light-emitting diodes (LEDs) to create a visual display. The LEDs are arranged in a grid or matrix, each serving as a pixel in the display. The LEDs are typically controlled by a microcontroller or other electronic circuitry that sends signals to the LEDs to turn them on or off as needed to create the desired image or text.
LED screens often use a combination of red, green, and blue (RGB) LEDs to create a specific colour. A wide range of colours can be produced by varying the intensity of each colour. Some LED displays also include a separate white LED to provide additional high brightness.
With the advancements in LED display technology, this type of LED display is today commonly used in various applications, including digital signage, scoreboards, traffic signs, and in electronic billboards for indoor and outdoor use.
What is the power consumption of an LED display?
The power consumption of an LED display depends on several factors, including the size of the display, the type and number of LEDs used, the brightness level, and in the display content.
With the latest developments in LED technology, LED displays are known for their energy efficiency, which is one of the reasons they are famous for use in electronic signage and displays. On average, an LED display may consume around 50-100 watts per square metre, but this can vary widely depending on the abovementioned factors.
Overall, LED displays are known for their relatively low power consumption compared to other electronic displays, making them a cost-effective and environmentally-friendly choice for many applications.
What resolution should I choose?
The required resolution of an LED display depends on the distance from which the audience will view it. If the display has a low resolution (i.e., diodes are far apart) and is viewed up close, it can be challenging to discern what is being displayed.
Generally, there is a correlation between display resolution and price. A higher resolution requires more diodes per square metre, resulting in a higher cost per square metre.
When installing a digital sign, the viewing distance is crucial in determining the required resolution. For instance, a display mounted on a building facade or near a main road is viewed from a significant distance, so a high-resolution display would be unnecessary and costlier. On the other hand, if the display is at floor level in a department store, viewers will likely get closer to it, and a higher resolution display would be more suitable.
As a rule of thumb, having a pixel pitch of 1 mm for each metre of viewing distance for LED displays is recommended. This helps ensure the content is displayed clearly and is easy to read or understand.
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