Patent ID: 8431491
Filing Date: 2013-04-30
Classification: H01L

Abstract:
1. A method for conducting reactive ion/plasma etching on a wafer in semiconductor manufacture, said wafer having a surface and an opposing surface, and said method comprising the steps of: a) applying a dry film photoresist to the surface of the wafer to afford a dry film photoresist/wafer assembly, said dry film photoresist having a surface and an opposing surface; b) placing the opposing surface of the dry film photoresist of the dry film photoresist/wafer assembly in contact with a chuck membrane of a piece of equipment for effecting reactive ion/plasma etching; and c) initiating a reactive ion/plasma etching process to effect formation of at least one via or cavity in the wafer wherein the photoresist protects the chuck membrane of the equipment for effecting reactive ion/plasma etching during its use for this purpose.