Maryland's Defense Patent Database

The defense community in Maryland is an R&D powerhouse.

Use this database to see the innovative patents that are poised for commercialization.

Fabrication ultra-thin bonded semiconductor layers

Patent image

The invention uses implantation, typically hydrogen implantation or implantation of hydrogen in combination with other elements, to a selected depth into a wafer with that contains one or more etch stops layers, treatment to split the wafer at this selected depth, and subsequent etching procedures to expose etch stop layer and ultra-thin material layer.A method for making an ultra-thin material layer bonded to a substrate, has the steps: (a) growing an etch stop layer on a first substrate; (b) growing an ultra-thin material layer on the etch stop layer; (c) implanting an implant gas to a selected depth into the first substrate; (d) bonding the ultra-thin material layer to a second substrate; (e) treating the first substrate to cause the first substrate to split at the selected depth; (f) etching remaining portion of first substrate to expose the etch stop layer, and (g) etching the etch stop layer to expose the ultra-thin material layer.

Kub, Francis J.; Hobart, Karl D.
Patent Number: 
Technical domain: 
Materials and Coatings
FIle Date: 
Grant Date: 
Grant time: 
854 days
Grant time percentile rank: 
Claim count percentile rank: 
Citations percentile rank: 
'Cited by' percentile rank: