LED 101

 

LED “101” - Required Knowledge Before Shopping


Before purchasing an LED sign for your business you must understand how to compare all manufacturer’s. This will ensure that you receive an “apples to apples” product comparison from each potential LED company.


All LED displays are constructed on (3) principles: (Regardless of LED Manufacturer)


1. Pixel Pitch (a.k.a.) Resolution
2. LED Screen Size (a.ka.) Sign Matrix
3. Total Number of LEDs per sign face


Background Information.“ You must understand, what is an LED pixel”


Pixel - refers to the smallest unit of measurement, when dealing with LED signage. The pixel will consist of Red, Blue and Green LEDs, which will give your display the ability to produce all colors. Typical pixels manufacturers use will contain either: (3) LEDs per pixel or (4) LEDs per pixel


Principle 1 - Pixel Pitch or Resolution

Pixel Pitch - refers to the distance from the center of “one pixel” to the center of the “adjacent pixel”.
Simply put: the smaller the pixel pitch the closer the pixels are to one another, the better the resolution.

Example:
A sign with a (20)mm resolution has a higher definition than a sign with a (25)mm resolution
A sign with a (16)mm resolution has a higher definition than a sign with a (20)mm resolution
A sign with a (12)mm resolution has a higher definition than a sign with a (16)mm resolution

The pixel pitch is the most important aspect of creating quality videos and graphics, if you do not have enough pixels on your LED screen you will not have clear videos. The smaller the (mm) resolution the better the image that will be produced.


Principle 2 - LED Screen Size or Sign Matrix


Sign Matrix - refers to the actual space on your display that is populated with pixels. This will contain (2) numbers
Matrix Height - how many pixels tall the screen size will be
Matrix Width - how many pixels wide the screen size will be
These numbers are mandatory to compare one company to another. All LED signs have a matrix height and matrix width, regardless of resolution. These numbers give consumers a true comparison from one LED company to another, compare sign matrix not cabinet dimensions.

Example:
Let’s look at (3) different resolutions that are approximately 4’ x 8’ in size:
(16)mm resolution Matrix Height: 64 (X) Matrix Width: 144 = Total Pixels 9,216
(20)mm resolution Matrix Height: 48 (X) Matrix Width: 112 = Total Pixels 5,376
(25)mm resolution Matrix Height: 40 (X) Matrix Width: 88 = Total Pixels 3,520


Principle 3 - Importance of Total # of LEDs per Sign Face
The most important aspect of your LED display is “how many actual LEDs are on your screen”. The more LEDs you have the better the picture quality will be, the better your advertising messages will look, which translates in a higher return on your investment. “How To Calculate Total Number of LEDs per Screen” 

Step1: Find out how many pixels: Sign Matrix Height (X) Sign Matrix Width = Total # of Pixels
Step 2: Calculate Total # of LEDs Per Signs Face: Total # of Pixels (X) # of LEDs Per Pixel= Total # of LEDs/Face

Example:
A Sign that has a resolution of (16)mm, sign matrix 64 x 144 and had (4) LEDs per pixel
     How would you calculate the total number of LEDs?
     64 x 144 = 9,216 x 4 = 36,864 Total LEDs Per Sign Face

* LED signs are similar to buying a TV, the more LEDs you have on your screen the better the resolution , or picture quality will be.