Multicolor electronic devices and processes of forming the same by printing

A method of printing a regular array of rows of electrically active subpixels on a workpiece for use in an organic electronic device, wherein the subpixels are capable of emitting light having c different colors and having a subpixel pitch s, said method comprising:

• (a) providing a printing head having z nozzles arranged in a row with a spacing p, where z=n1(c) and p=n2(s), the printing head being at a first position relative to the workpiece;
• (b) providing c different color printing inks to the printing head, one color printing ink for each of the c colors, and wherein each color printing ink contains an electroluminescent material;
• (c) supplying each nozzle on the printing head with color printing ink in an alternating pattern, wherein adjacent nozzles on the printing head are not supplied the same color;
• (d) dispensing said color printing ink from the z nozzles to print a first set of z rows of subpixels with the printing head;
• (e) moving the workpiece laterally relative to the printing head by a distance d1, where d1=n3(s);
• (f) dispensing said color printing ink from the nozzles to print a second set of z rows of subpixels with the printing head;
• and
• (g) repeating steps (e) and (f) for a total of n2 sets of z rows of subpixels;
• where:
• c is an integer greater than 1;
• n1, n2, and n3 are the same or different and are independently selected from integers greater than 0, with the proviso that n2 is not a multiple of c.