Patent ID: 8616666
Filing Date: 2013-12-31
Classification: B41M,G02F

Abstract:
1. 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=n (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 d (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 n where: c is an integer greater than 1; n