LED lamp bead array and driving method thereof

Abstract

The invention discloses an LED lamp bead array and a driving method thereof, the LED lamp bead array comprises N rows of LED lamp beads, M columns of LED lamp beads and a driving module, and N and M are positive integers greater than 1; each row of LED lamp beads is connected with a row scanning line; each column of LED lamp beads is connected with one column of data lines; each row scanning lineis connected with one column data line and shares a data port of the column data line; each column data line is connected with the driving module; the driving module provides display data for each column data line through a data port and provides address information for row scanning lines connected with the column data lines. The column data lines provide corresponding display data for each columnof LED lamp beads and provide corresponding address information for the row scanning lines connected with the column data lines; the row scanning lines provide corresponding address information for each row of LED lamp beads, so that the driving structure is simplified, the driving mode of the LED lamp bead array is optimized, and the cost is reduced.

Description

technical field [0001] The invention relates to the LED field of LED display technology, in particular to an LED bead array and a driving method thereof. Background technique [0002] In the existing LED line scanning array driving scheme, such as Figure 1a and Figure 1b As shown, there is no driving circuit inside the LED lamp bead, and the common anode connection is adopted. The LED lamp beads are arranged in an array form, and the row scanning line is connected to all the anodes of a row of lamp beads, and the row scanning line is connected to the power supply by the PNP drive tube. The external driving circuit sends the switching signal of the first row to drive the PNP tube to turn on the power supply of the LED lights of the first row. At this time, the column driving circuit outputs a driving current with a variable duty ratio according to the display data to light up the RGB lights of the LEDs. When the driving cycle of the first row ends, the column driving circ...

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Problems solved by technology

[0007] The purpose of the present invention is to provide an LED lamp bead array and its driving method, which can effectively solve the problems of uncontrolled long strings of lamp beads in the existing serial signal driving mode and cumbersome and high cost of material preparation in the parallel signal driving mode. Avoids the limitations of time-sharing drives

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