Patent ID: 9711263
Date: 2017-07-18
CPC Classifications: H01B,H01L,H05K,Y02E

Claim:
1. A method comprising: providing a transparent electrically conductive film comprising: patternwise exposing the coated area of the electrically conductive layer to a corona discharge to provide a patternwise exposed electrically conductive film comprising (1) an unexposed region of the coated area having a first electrical resistivity, and (2) an exposed region having a second electrical resistivity; wherein the exposed region is less electrically conductive than the unexposed region, and wherein there is a ratio of the second electrical resistivity over the first electrical resistivity of at least 1000:1; wherein the metallic nanowires have at least one cross-sectional dimension less than 200 nm and the polymeric overcoat layer has a thickness of at least 200 nm; and wherein the corona discharge ablates portions of the plurality of interconnecting metallic nanowires forming trenches in the electrically conductive layer.