Patent 11172314 was granted and assigned to Cirrus Logic on November, 2021 by the United States Patent and Trademark Office.
The application describes a package substrate for a MEMS transducer package having a recessed region formed in an upper surface of the package substrate. The recessed region extends only partially through the package substrate from an opening in the upper surface of the package substrate in a first direction towards the lower surface of the substrate. The recessed region extends only partially through the package substrate from an opening in a side surface of the package substrate in a second direction towards an opposite side surface.