Common Sense on LED Display Screens
WHAT IS LED?
LED is short for Light Emitting Diode. An LED emits light as a result of electric luminescence. It is also known as “cold light” as, unlike with old-fashioned incandescent bulbs, the light is not produced by heating a metal filament. The diode, on the other hand, emits light when flowing through two specially coated silicon semiconductors. It is one of the most energy-efficient and power-saving ways to produce light.
An LED consists of solid materials without movable parts and is often moulded into transparent plastic. This ensures high durability. When an LED is on, it emits almost zero heat. This reduces the problem of cooling the electronic parts.
HOW DOES AN LED DISPLAY WORK?
An LED display consists of many closely-spaced LEDs. By varying the brightness of each LED, the diodes jointly form an image on the display.
To create a bright color image, the principles of additive color mixing are used, whereby new colors are created by mixing light in different colors. An LED display consists of red, green and blue LEDs mounted in a fixed pattern. These three colors combine to form a pixel. By adjusting the intensity of the diodes, billions of colors can be formed. When you look at the LED screen from a certain distance, the array of colored pixels are seen as an image.
WHAT IS RGB?
RGB is short for Red, Green and Blue. It is a color scheme that exploits the fact that all visible colors can be mixed from these three basic colors. It is used in almost all types of displays, including LED displays.
WHAT IS SMD?
SMD means Surface Mount Device. These are electronic components that are surface mounted directly on a printed circuit board – and not as previously by soldering the metal pin on the underside of the circuit board.
In LED display technology, the SMD concept is used a little differently. An SMD display is an LED display where the red, green and blue diodes are potted in a small plastic encapsulation which is surface mounted on the printed circuit boards of the display. When the diodes are encapsulated in this way, they take up a lot less space, making it possible to produce displays with less spacing between the diodes and higher resolution.
HOW MUCH POWER DOES AN LED DISPLAY USE?
LED is a highly energy-efficient technology, hence the widespread use of energy-saving LED bulbs today. The amount of power the diodes in an LED display use depends on the type of display, brightness and usage.
There are many different types of LEDs and displays. The power consumption of an indoor display, for example, will be different from an outdoor digital sign, which has to be seen in direct sunlight. The brightness of the display is also a major factor. The images must be clear, but the light from the display must not dazzle. An outdoor LED display needs to be far brighter in daylight than when darkness falls.
What is displayed also has an impact. LED displays display images by turning on and adjusting the brightness of colored diodes. An entirely white image with black text will therefore require many more illuminated diodes – and far more power – than white text on a black background.
HOW LONG DOES AN LED DISPLAY LAST?
It is difficult to say anything specific about the life of an LED display as many factors come into play. However, with proper maintenance, a display can certainly last for more than ten years. As with all types of electronics, life expectancy is also affected by the daily use and the environment around the display. Light images and a high level of brightness are more wearing on the display than darker images and a low level of brightness. Factors such as humidity and salt content in the air can also come into play.
Over the course of the life of an LED display, the light output from the diodes will diminish. By how much depends on the type and generation of the diodes. Many LED displays never use their full light intensity, so reduction will rarely be a problem.
WHAT IS PIXEL PITCH AND DISPLAY RESOLUTION?
The distance between an LED display’s diodes determines the resolution of the display. The distance to the center of the neighboring group is measured from the center of each group of red, green and blue diodes. This distance is known as pixel pitch. Each group of diodes forms a pixel.
If an LED display has a pixel pitch of 1 cm, there may be 100 x 100 pixels per square meter of display. The resolution of a display is given as a pair of numbers that indicate the width and height in pixels. If you have a 6 x 8-meter screen with 1 cm in pixel pitch, it has a resolution of 600 x 800 pixels.
There are LED screens with a pixel pitch of anywhere from several centimeters to a single millimeter.
WHAT RESOLUTION SHOULD I CHOOSE?
The resolution you need for an LED display depends on the viewing distance. From what distance will your audience be viewing the display? If you are close to a low-resolution LED display (far between the diodes), it will be difficult to see what’s on the display.
There is typically a connection between display resolution and price. The higher the resolution, the more diodes there are per m2 – and therefore a higher m2 price.
If you are installing a digital sign by a main road or on a building facade, it will be seen from a certain distance. Here, a high-resolution display would be unnecessary – and unnecessarily expensive. If it is a display at floor level in the middle of a department store, the audience will get much closer to it. Here, a high-resolution display works best.
A good rule of thumb for LED displays is: 1 mm pixel pitch for each meter of viewing distance.
WHAT IS NITS or WE CALLED BRIGHTNESS?
The nit measurement is used when analysis the lumen of an LED display. Nit is another word for brightness per square meter. Brightness is the SI unit (meter system) of luminance. It is a unit that takes the human eye’s perception of the brightness of different colors into account. This makes it the obvious unit to use when measuring the brightness of a display.
The nit unit is completely different to the ANSI lumen's measurement, which is used to assess the brightness of a video projector. They cannot be compared.
WHAT USE LED DISPLAY SCREENS?
Unlike traditional display forms, LED screens do not get washed out by bright ambient light and are completely seamless. Providing you with one seamless wall of video that would make your message completely unmissable
1) Bright, Vivid, Attention-Grabbing Displays
2) Unique Content Opportunities
3) Operational from Anywhere
4) Complete Control of Your Message
5) Low Maintenance & High Durability
6) Higher ROI on Out-of-Home Advertising
7) Advantages for Billboard Companies
With a bright, vivid display, you can capture the attention of passersby instantly, while promoting your desired message or content and increasing sponsorship revenue.
When used correctly, LED display screen ads can be advantageous to almost every type of business. All you need is the right mix of creativity and value to catch the attention of your customers.
If you’re looking for LED advertising services, contact the team at JEKAZ LED today. We’re the premier provider of LED Video Display Screen products and services in the country. Find out how we can help your business,welcome write to info@jekazled.com.