What you need to know about LED signage and display boards
Firstly, we will start off with the basic, what is LED. Basically an LED is a small light bulb, but it is more efficient than traditional light bulb, and also a longer life span.
Traditional light bulbs use filaments, which is heated with electricity to produce light, and a lot of energy is wasted in the form of heat, which is not what we want from lighting. LED s are more efficient because they don’t use filaments, and more electricity are used to produce light. They are very efficient and durable, with a lifespan of 100,000+ hours (around 11 years). Also LEDs use less electricity to run, whilst able to produce brighter displays than traditional filament light bulbs.
How are LED signs and displays defined?
Some terms for LED signs and displays: Pixel, Pitch and Matrix.
Individual LEDs are grouped together to form a ‘pixel’, and in each pixel, it can contain just 1 or multiple LEDs, and that will define how many colours it is able to produce and the intensity.
The ‘pitch’ is the distance from the centre of each pixel to the centre of the next pixel. The pitch determines how sharp the image will be.
The ‘matrix’ is the number of pixels in an LED sign. If an LED sign is 32 pixels high and 96 pixels wide, the matrix is 32×96.
With LED message signboards, the matrix determines how many lines of text you can put on the sign, how many characters you are able to show at any single time, as well as if you are able to produce picture, images or videos.
An example of an LED message board
The smaller the pitch and the larger the matrix, the more detailed your image on the LED display will be.
Types of LED Displays
The first one is 3 in 1 RGB (Red Green Blue)LED display, where red, green and blue LEDs combine together to make one pixel. The pixel can create a range of colours by varying the strength of each LED within each block of LEDs. One single pixel might not be impressive, but a combination will be able to produce images and display graphics if you have a big enough matrix.
The second one is SMD (Surface Mounted Device) LED displays, where the RGB are combined into one bulb, but as each pixel’s LED are grouped much closer to each other, it is able to produce better resolution than RGB LED displays.
SMD LED Display
The optimal viewing distance for LED signs and displays are where individual pixels blend together and form a smooth image. So if your audience are looking at your sign or display from a relatively close range, a smaller pixel pitch sign is what you will want, so the text or image shown is not blurred due to low resolution at a close range.
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