Patent ID: 9159925
Filing Date: 2015-10-13
Classification: H01L,Y02E

Abstract:
1. A method for forming an organic device having a patterned material layer, comprising: a) providing a substrate; b) depositing one or more organic materials over the substrate to form one or more organic layers having an active electrical function, and optionally depositing an intermediate inorganic layer over the one or more organic layers; c) forming an imprint-patternable bilayer including a buffer layer provided over the one or more organic layers and optional intermediate inorganic layer, and an imprint resist layer provided over the buffer layer; d) forming an imprint pattern in the imprint-patternable bilayer using a stamp with raised regions that pass through the imprint resist layer and into the buffer layer; e) etching the buffer layer with an etchant that is chemically orthogonal to the top layer, thereby undercutting the imprint resist layer in a controlled manner and exposing a top surface of the one or more organic layers or optional intermediate inorganic layer in a pattern corresponding to the imprint pattern; f) depositing a material onto the imprint resist layer and the exposed top surface of the one or more organic layers or optional intermediate inorganic layer; and g) lifting off the imprint resist layer and material deposited over the imprint resist layer with a solvent that dissolves or swells the buffer layer, leaving behind a patterned layer of material deposited over the top surface of the one or more organic layers or optional intermediate inorganic layer.