What Is a LED Display and How Does It Work

  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.

What Is a LED Display?

A LED display is a flat panel display that uses an array of light-emitting diodes as pixels for a video display. Their brightness allows them to be used outdoors where they are visible in the sun for store signs and billboards.

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 colour image, the principles of additive colour mixing are used, whereby new colours are created by mixing light in different colours. An LED display consists of red, green and blue LEDs mounted in a fixed pattern. These three colours combine to form a pixel. By adjusting the intensity of the diodes, billions of colours can be formed. When you look at the LED screen from a certain distance, the array of coloured pixels are seen as an image.

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 coloured 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.

Various of LED Displays Premteco Can Provide

Founded in 2003, Premteco focuses on research, design, manufacture, and sale of LED display. Premteco has built up outstanding reputation in the industry by supplying consistent and reliable LED display products, which allow you to build a strong brand image, and catch the attention of new potential customers or enhance the visual performance of your stage. Meanwhile, we keep updating advanced facility and automatic machines. In addition, we are fiercely committed to providing exceptional service to our customers. Your needs are our responsibility! We strive to be the most innovative and the first-class global production enterprises.