LED modules are the minimum component, and are essentially “tiles” of LED globes (commonly referred to as dots or pixels) attached to computer circuit boards, similar to those found in a computer box.
The distance in millimetres between each LED dot/pixel on each tile or module is referred to as the “pitch” of the LED. The pitch of each LED determines the resolution of the module. The CLOSER the LEDs and thus the SMALLER pitch, a HIGHER RESOLUTION is the result. Thus:
A Pitch 6MM (P6) module, will be a LOWER resolution than e.g. a Pitch 4MM (P4) module.
Now we design the module size, according to the pitch and the desire to have an optimal module size for the smallest to the largest of applications. P8 outdoor module for
high resolution displays may be designed to have 32 dots wide, and 16 dots high. If each dot is 8MM apart, then the module is 32 dots x 8mm wide by 16 dots x 8mm high. The dimension of each module is thus 256MMwide x 128MM high.
The higher the resolution (or the lower the pitch/closeness of the LEDs) the more expensive the LED system is due to the increased number of LED globes on the module and the supporting computer circuitry behind the module.
An LED cabinet is made up of matrix of LED modules. One World LED produces standard cabinet sizes, or it can customise cabinets based on the minimum of a module.
The LED modules are connected to each other, and similar to a computer box, power supplies and cooling fans are attached to complete the design of a cabinet.
A typical P8 Outdoor (DIP) cabinet designed and manufactured by One World LED is the 1M (1024MM) Wide x 1M (1024MM) High cabinet. This is made up of:
4 x P8 Outdoor (DIP) Modules Wide = 4x256MM=1024MM
8 x P8 Outdoor (DIP) Modules High = 8x128MM=1024MM
Power Supplies, Fans and Computer Receiving Card
Cabinet Casing and Back-Service Doors (Sealed)
The LED system is affixed in a cabinet that is designed to provide locating holes and mounts so that cabinets can also be connected to each other. These locating mounts also allow sign fabricators to position LED cabinets into supporting sign poles and structures.
There are two types of LED globes that are used in One World LED display systems:
SMD (Surface Mount Device)
SMD LED’s are used for Indoor and Semi-Outdoor LED display systems where closer viewing distances are typical and thus higher resolution (closer pitch) is required, and the environment is protected from direct sunshine. SMD LED’s group the THREE primary colours of Red, Blue and Green together into ONE LED globe and are flat to the surface of the LED module they are placed on.
DIP (Dual In-Line Package)
DIP LED pixels/dots have the three primary colours of Red, Blue and Green (sometimes 2 Red) as SEPARATE globes (1R1B1G or 2R1B1G), combined into one LED or dot/pixel, thus a “package” of LED.
DIP LED is more robust and is used for dedicated outdoor applications, as it is far more powerful against the sun using three LED separate globes. The DIP resolutions are typically P8 and higher as viewing distances are generally greater outdoors.
DIP LED’s are packaged onto circuit boards that are sunk in resin (and thus outdoor LED is heavier) at the front with the DIP LEDs connected by fine wires through the resin, for protection against water and rain. Refer to One World LED Design Primer for more details.
One World LED uses Silan LED globes in its manufacturing processes. Silan LEDs provide the optimal choice when considering price, longevity, brightness and energy use. Silan LEDs are generally 35% brighter (and thus require less energy to drive brightness) and have around 35% better longevity over regular generic LEDs.