LED Knowledge

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What is an LED?

A light-emitting diode (LED) is a tiny, electronic semiconductor that converts electric energy into visible light. The chemical compound used within an LED determines its colour, brightness and power efficiency. Unlike incandescent lamps, LEDs have no filaments that can burn out or fail.


LEDs Come In Two Different Forms

Manufacturers use several types of LEDs to construct digital displays. The two most common are Through-Hole LEDs and Surface Mount Device (SMD) LEDs, also known as Surface Mount Technology (SMT). Each type has its respective advantages that make it preferable for different applications.


Surface Mount LEDs

Surface Mount Devices, or SMD for short, refers to the LED lead frame mounting method. LEDs are mounted to the surface of the circuit board. The SMD contains red, green and blue die.


Through-Hole LEDs

Through-hole LEDs are mounted with leads protruding through the circuit board and appear to stand taller. Each LED is a single-color die of either red, green or blue.


Through-Hole LEDs

Through-hole LEDs use a reflector cup and an epoxy lens package. This combination as well as the type of die used, plays a role in determining the elliptical viewing cone produced. A through-hole LED reflector cup focuses the light emitted by the die into a specific viewing area.

Benefits of Through-Hole:

  • Optimized for moderate to longer viewing distance
  • Louvers deflect sunlight for higher contrast
  • Black matte finish reduces reflection
  • Brighter than SMD LEDs


What Is A …

Module

Pixel

Module

 LED modules are made up of parts that form the building blocks of LED displays. Rows of modules line together to arrange the LEDs in different variations depending on the requirements.

Pixel

Pixels, short for picture elements, are points of light that illuminate to form visuals. A pixel can be made up of a single LED, multiple LEDs of the same colour or multiple LEDs of different colors. They are the smallest elements of the electronic colour display system that can be individually controlled and turned off or on at various brightness levels.

Pixel Pitch & Resolution

Pixel pitch influences the resolution of the LED display screen. More pixels placed together means higher
resolution. High resolution means the image will be clear to viewers even when viewed from close
proximity. We will help you to balance the cost as well as the perfect pixel pitch for your installation, to
ensure the best fit for your viewing experience as well as your budget.

Pixel Pitch In A Nutshell

Pixel pitch is essential for implementing successful digital signage programs because it influences the resolution of the display screen. More pixels placed together means higher resolution. If pixels are set further apart, say, in a P16 outdoor LED display, the resolution will be lower. High resolution means the image will be clear to viewers even when viewed from proximity. Lower resolution means large LED display panels may look great from a distance, but if you move closer to them, they will become uncomfortable to view.

(1)

Pixels are the smallest units on a digital board

(2)

Each pixel is made up of a group of 3 light emitting diodes (LED) red, green and blue

(3)

Pixel pitch refers to the distance between two pixels on an LED screen

(4)

Lower the pixel pitch, the higher the resolution

(5)

Higher the pixel pitch, the lower the resolution

How Does Pixel Pitch Affect Minimum Viewing Distances?

Viewing distances are calculated based on the display type and the distance from the display. Each display will have a minimum and a maximum viewing distance that may vary based on application and intended use.

Selecting the right pixel pitch is important because it influences the resolution of the display screen. High resolution means the image will be clear to viewers even when viewed from proximity. Lower influence resolution means large LED display panels may look great from a distance, but if you move closer to them, they will become uncomfortable to view.

What Is The Difference Between Indoor & Outdoor LED Displays?

Indoor LED Display

Indoor LED displays generally have higher resolutions. It is not designed to be waterproof, and while the brightness is lower, it is sufficient to display crisp and vivid visuals in indoor locations.

 Features of an Indoor LED Display:

  • Higher resolution

  • Higher pixel density
  • No need for additional ventilation

  • Brightness 600nits to 1,200nits

  • Dustproof


Outdoor LED Display

Outdoor LED displays are designed to be more durable, weatherproof, and are brighter. Even if an indoor location is receiving a lot of direct sunlight, or is exposed to rain and moisture, it is recommended to use an outdoor LED module.

 Features of an Outdoor LED Display:

  • Waterproof and durable

  • Able to take extreme weather conditions

  • Serviceabilty and accessibility
  • High brightness 4,000nits to 10,000nits

  • Dustproof


The Advantages Of An LED Display Over Projector Screens

LEDs can display visuals that are bright and crisp even in a fully lit room, unlike projectors which require a dimly lit room. You can also build an LED Display to any size and shape, and it is also much easier to calibrate the colour using the installed software. With a projector, you are forced to display visuals in a set resolution and there is nothing you can do once the lamp degrades.

Contact Us

Planning an LED display project? Send us your proposed location, dimensions and intended viewing distance for an initial feasibility discussion.