Patent ID: 11967556
Assignee: nan
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A microelectronic device, comprising:
a staircase structure in a stack structure comprising a vertically alternating sequence of insulative material and conductive material arranged in tiers, the staircase structure comprising steps at lateral ends of the tiers of the stack structure;
a fill material adjacent the staircase structure; and
contacts extending through the fill material:
some of the contacts extending to additional conductive material on portions of the conductive material of upper tiers of the stack structure, the some of the contacts comprising a liner, the additional conductive material being between the liner and the portions of the conductive material of the upper tiers of the stack structure, and
others of the contacts extending to portions of the conductive material of lower tiers of the stack structure.