Multicolor electronic devices and processes of forming the same by printing

US9011967B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Nugent Truong · Ventura, US
• Matthew Stainer · Phoenix, US

Key dates

• Filing date: Jun 3, 2010
• Grant date: Apr 21, 2015
• Expiry date: Sep 27, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K71/00

Abstract

There is provided a process of forming a regular array of rows of subpixels on a workpiece. The subpixels having 3 different colors, and a subpixel pitch s. Of the three colors, q colors are formed by printing and r colors are formed by a non-printing method. The process includes the steps: (1) providing a printing head having z nozzles arranged in a row with a spacing between the nozzles of p, where z=3n1 and p=2s, the printhead being at a first position relative to the workpiece; (2) providing q different printing inks, one for each of the q printed colors; (3) supplying each of the printing inks to the nozzles in a regular alternating pattern; (4) printing a first set of z rows of subpixels with the printing head; (5) moving and printing in a first pattern with the steps: (a) moving the workpiece laterally relative to the printing head by a distance d1, where d1=3n2; and (b) printing a set of z rows of subpixels with the printing head; (6) moving and printing in a second pattern with the steps: (c) moving the workpiece laterally relative to the printing head by a distance d2, where d2=3n3, such that d1+d2=pz; and (d) printing a set of z rows of subpixels with the printing head; …