Patent ID: 8841140
Filing Date: 2014-09-23
Classification: H01L

Abstract:
1. A method, comprising: determining a first nitrogen content of a surface portion of a first passivation layer formed on a last metallization layer of a first semiconductor device formed above a first substrate, wherein said surface portion of said first passivation layer has been subjected to a patterning process to pattern an aluminum-based terminal metal layer stack formed thereon; determining a range for a target nitrogen content for a surface portion of a second passivation layer to be formed above a last metallization layer of a second semiconductor device formed above a second substrate, wherein said determined range for said target nitrogen content is based on said determined first nitrogen content; forming a second passivation layer having a second nitrogen content in at least a surface portion thereof above a last metallization layer of a second semiconductor device that does not comprise an aluminum-based terminal metal layer stack formed thereon, wherein said second semiconductor device is formed above a second substrate and said second nitrogen content is within said determined range for said target nitrogen content; and forming additional passivation layers above each of a plurality of additional second substrates wherein a nitrogen content of a surface portion of each of said additional passivation layers is within said determined range for said target nitrogen content.