Challenges of Transferring a TaN Reactive Sputter Deposition Process from a Batch
Tool to a Single Wafer Tool during a 4” to 6” Wafer Conversion
Keywords: TaN, reactive sputter deposition, process transfer
To increase throughput and enable a wafer size conversion at Skyworks’ Newbury Park GaAs fab, it was necessary to develop a TaN process on a sputter tool almost entirely unlike the original process tool. TaN is a reactively sputtered resistive film which is used to make resistors on the same die as power amplifiers. Many challenges arose while trying to match the original process. This paper will discuss the development of a manufacturable TaN process on the new platform, in
spite of these challenges.