Patent ID: 7057590

Claim:
An LED array comprising: a plurality of LEDs, each with a first and second terminal, wherein the plurality of LEDs are arranged in a plurality of columns of LEDs having their first s terminals electrically connected and a plurality of rows of LEDs having their second terminals electrically connected; a plurality of column select switches, each column select switch being coupled to a column of the LEDs; a plurality of column control input terminals for receiving column control input signals, a column control input terminal being coupled to n of the column select switches, wherein n is at least two, for selectively activating the column select switches when an active column control input signal is provided; a plurality of column decoding switches, each column decoding switch attached to a plurality of column select switches for selectively coupling a column reference voltage through the column select switches to the columns of LEDs when both the column decoding switches and column select switches are activated; a configcol input terminal for receiving configcol input signals coupled to n column decoding switches of the plurality of decoding switches, the configcol input signals having n states causing the nth column decoding switch to be activated when the configcol input signal is in the nth state; the column decoding switches activated sequentially and for each activated column decoding switch the corresponding plurality of column select switches activated sequentially to provide the column reference voltage sequentially to the columns of LEDs; and the LEDs in the array lit by providing a row reference voltage to the rows having LEDs to be lit when a column is coupled to the column reference voltage.