PRINTING OF MULTIPLE INKS TO ACHIEVE PRECISION REGISTRATION DURING SUBSEQUENT PROCESSING

摘要

Methods of achieving precision registration in a roll to roll process for making patterned substrates by depositing first and second inks in a predetermined pattern, the predetermined pattern having fiducial marks and main pattern marks. One of these inks prints the fiducial marks onto a substrate while another ink prints main pattern marks on the same substrate such that the predetermined pattern bears a predictable spatial relationship to the pattern of fiducial marks. Consequently, even if the ink forming the predetermined pattern is invisible, or has such low contrast with the substrate that it is effectively invisible, or even has been dissolved away in a subsequent processing step, it is still possible to know where the predetermined pattern is by referring to the pattern of fiducial marks. Touch screen displays including patterned substrates prepared of the methods are also disclosed.

主权项

1. A method of patterning a substrate, comprising:
providing a printing roll, a first ink dispenser, and a printer, wherein the printing roll has a predetermined pattern thereon, the predetermined pattern having both fiducial marks and main pattern marks; dispensing a first ink soluble in a selected solvent onto the printing roll with the first ink dispenser; advancing the substrate against the printing roll, printing the negative of the predetermined pattern onto the substrate with the first ink; advancing the substrate past a printer and applying a second ink that is non-soluble in the selected solvent onto the fiducial marks; overlaying a layer of functional material onto the substrate over the predetermined pattern; and rinsing the substrate with the selected solvent, thereby removing the soluble ink, leaving on the substrate the functional material in the predetermined pattern of the main pattern marks, and the non-soluble ink in the predetermined pattern of the fiducial marks on the substrate.