Patent ID: 11901287
Assignee: MICRON TECHNOLOGY, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 22:
23. The method of claim 20, wherein each of the contact openings exposes a surface portion of one of the other structures and forming the contact openings through the at least one dielectric material comprises:
forming initial contact openings through the upper elevations of the at least one dielectric material, some of the initial contact openings forming some of the contact openings, some others of the initial contact openings terminating in the at least one dielectric material;
forming a sacrificial material on the surface portion of the one of the other structures exposed by forming the some of the initial contact openings;
extending the some others of the initial contact openings further into the at least one dielectric material to form some others of the contact openings; and
before forming the conductive contact structure in each of the contact openings, removing the sacrificial material.