![]() However, the concepts and techniques introduced here apply to any LED matrix including arrays formed using discrete LEDs. This note is intended to support the design of messaging and video systems using LED tiles. The last section introduces several ICs that are widely used in driving LEDs. This involves dividing the LED driving sequence into three levels in the time domain. This application note also describes how the brightness of each individual LED can be controlled in multiplex mode. The multiplex sequence inevitably requires more complex processing, but is more efficient compared to individually driving each LED. What should be noted here is that the matrix arrangement demands that LEDs be driven in multiplex. This arrangement is discussed in more detail later. ![]() In a matrix format, LEDs are arranged in rows and columns. As such, LEDs are often arranged in matrices in order to make efficient use of resources. However, as the number of LEDs increases, the amount of resources needed to operate these LEDs grows to an unmanageable level. It is relatively simple to drive several LEDs individually. ![]()
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