Monolithic Power Systems, Inc.
High brightness LED matrix driving system

Abstract:

A LED driving system for a LED matrix having a plurality of LEDs connected in parallel. The LED driving system includes a plurality of driving modules. Each one of the plurality of driving modules drives a corresponding one of the plurality of LEDs. The plurality of LEDs are divided into a plurality of groups. The plurality of driving modules drive the plurality of LEDs ON successively group by group. In each one of the plurality of groups, the LESs are driven ON successively row by row, and for each row in each one of the plurality of groups, the LEDs are driven ON successively column by column with a programmed delay time between the LEDs in every two successive columns. Each one of the plurality of driving modules can include a grayscale control module for adjusting a brightness of the corresponding one of the plurality of LEDs.