LED Display Module - General Introduction

Almost all the LED display screens are customized. Customers have different requirements: different installation environment, different function requirement, even different budget level. All of these factors must be considered when choosing a led display screen.

Before choosing a LED display screen, customers need to learn more about this product. The more you learn, the better decision you make. Certainly you can get the suggestion from the sales of led display manufacturers, still you'd better learn more yourself, because no salesman would say bad words to his offer. When every salesman are trying to convince you that they can provide the best and most suitable led display screens and solutions, you need to judge on your own which one is trust-worthy.

Now we're starting some technical article series to introduce all the parts of led display - LED modules , LED cabinet , switch power supply units and control system etc. We believe it would be good reference when you're going to purchase the led display screens. In this technical article serie, we are introducing the most important part of led display screen - the led modules.

LED module consists mainly of LED lamps, mask, bottom case , PCBA, drive IC and waterproof rubber.

1. LED lamps. LED lamps can be generally divided to be two categories : SMD LED and DIP LED.
Generally the LED size we choose depends on the pixel pitch of led display screen. The smaller pixel pitch we want, the smaller size LEDs we use. The table below shows the relationship between the different pixel pitch and several common sizes of LEDs.

Some experienced customers sometimes point out the brand of LEDs they want, EPISTAR, CREE and so on. Most of times they pay more attention to the brand of LED wafer but ignore the package process, i.e. encapsulation process.
When the quality of wafers determine the feature of color, brightness and luminous decay, the package determines the reliability, durability and life span.

There will be much information need to be introduced, so we will leave the details in next technical article which will be updated shortly and continuously.