Patent ID: 8530350
Filing Date: 2013-09-10
Classification: H01L

Abstract:
1. A method of forming a semiconductor structure, comprising: forming a plurality of sets of conductive material and insulating material; forming a first mask over a topmost set of the plurality of sets; removing a portion of the first mask to expose a portion of a major surface of the topmost set of the plurality of sets; removing the exposed portion of the topmost set of the plurality of sets; removing another portion of the first mask to expose another portion of the major surface of the topmost set, the another portion of the major surface of the topmost set adjacent to the removed portion of the major surface of the topmost set of the plurality of sets; repeating the removing a portion of the first mask and removing the exposed portion of the topmost set of the plurality of sets until a first number of contact regions are formed, each contact region offset from the other contact regions; forming a second mask over a first region of the plurality of sets; and removing material from the plurality of sets in a second, exposed region of the plurality of sets laterally adjacent the first region to form a second number of contact regions.