Patent ID: 6838213
Filing Date: 2005-01-04
Classification: G03F

Abstract:
1. A process for fabricating a mask, comprising: a) depositing a membrane layer on a substrate; b) etching a backside of the substrate to form membrane windows through the substrate to the membrane; c) depositing at least one scattering layer on the membrane layer; d) forming an energy-sensitive resist layer on the at least one scattering layer; e) patterning the energy sensitive resist layer to form a pattern mask having openings in the energy sensitive resist layer, wherein each of the openings is optically aligned with a different corresponding one of the membrane windows; f) transferring the mask pattern into the at least one scattering layer underlying the pattern mask and at least a region of the membrane underlying the at least one scattering layer and overlying a membrane window to form a hybrid stencil/continuous membrane mask.