Patent ID: 9093475
Filing Date: 2015-07-28
Classification: H01L

Abstract:
1. A method for controlling the spacing of an electrical connection between printed ink metal lines, the method comprising: providing a substrate with a low surface energy top surface; continuously printing metal ink across a region of the substrate top surface; in response to a surface tension of the printed metal ink, forming discrete spherical ink caps in the region, including a first spherical ink cap contact adjacent to a second spherical ink cap contact, separated by a first distance; increasing the surface energy of the substrate top surface in the region; printing a first metal ink line overlying the first spherical ink cap contact; printing a second metal ink line, parallel to the first metal ink line, overlying the second spherical ink cap contact, where adjacent edges of the first and second metal ink lines are separated by a second distance; and, forming an electrically conductive bridge between the first and second metal link lines having a length equal to the first distance.