Patent ID: 9502528
Filing Date: 2016-11-22
CPC Classification: H01L

Claim Text:
1. A method of forming a set of contacts in a semiconductor structure comprising: forming a first block mask over a portion of the semiconductor structure, wherein the first block mask covers at least a portion of at least one source/drain (s/d) contact location; forming a s/d capping layer over a set of s/d contact locations that are not covered by the first block mask, the s/d capping layer comprising a first capping substance; forming a second block mask over the semiconductor structure, wherein the second block mask exposes at least one gate location; removing a gate capping layer from the at least one gate location, the gate capping layer comprising a second capping substance; and depositing a metal contact layer that forms a contact to the at least one s/d contact location and to the at least one gate location.