Patent ID: 7534681
Filing Date: 2009-05-19
Classification: H01L

Abstract:
1. A method of forming a memory device, the method comprising: forming a bulk insulation layer overlying a plurality of source/drain regions formed in a substrate; removing a cap layer formed on each of a plurality of gate stacks formed on the substrate to expose an upper surface of each of the gate stacks; after removing the cap layer, forming a mask layer overlying the exposed upper surface of each of the gate stacks and the bulk insulation layer; patterning the mask layer to define one or more portions of the bulk insulation layer for removal; forming one or more contact holes in the bulk insulation layer to expose a portion of one or more of the source/drain regions by removing the one or more portions defined for removal; and forming control gates and one or more contacts concurrently by forming a conductive layer on the exposed upper surface of each of the gate stacks to form the control gates and in the one or more contact holes to form the one or more contacts.