Patent ID: 8420978
Filing Date: 2013-04-16
Classification: H01L

Abstract:
1. A method for generating a pattern of structures of a conductive material on a substrate, said method comprising the steps of: i. providing a sacrificial layer of photoablatable material on at least a portion of said substrate, wherein said sacrificial layer of photoablatable material is a photoablatable polymer; ii. removing photoablatable material from selected regions of said sacrificial layer of photoablatable material via patterned laser ablation; thereby generating a deposition mask having a pattern of recessed features providing exposed regions of said substrate and masked regions of said substrate masked by said sacrificial layer of photoablatable material; iii. depositing said conductive material on said deposition mask and onto at least a portion of said exposed regions of said substrate; wherein said conductive material is an optically transparent metal, alloy or metal oxide, and iv. exposing said sacrificial layer of photoablatable material to electromagnetic radiation transmitted through said optically transparent metal, alloy or metal oxide that provides for at least partial laser ablation of said sacrificial layer of photoablatable material, wherein at least partial laser ablation of said sacrificial layer of photoablatable material selectively lifts off said conductive material provided on said sacrificial layer of photoablatable material and does not remove at least a portion of said conductive material provided on said exposed regions of said substrate, thereby generating said pattern of structures of said conductive material on said substrate.