Patent ID: 11877435
Assignee: NANYA TECHNOLOGY CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor structure, comprising:
a first bit line on a substrate;
a contact adjacent to the first bit line on the substrate, wherein a first distance between a top portion of the contact and the first bit line is less than a second distance between a lower portion of the contact and the first bit line;
a dielectric layer, disposed conformally over the first bit line, the substrate, and the contact, wherein the dielectric layer has a first dielectric layer portion formed at a side surface of the first bit line, a second dielectric layer portion formed on a top surface of the substrate, and a third dielectric layer portion formed at a side surface of the contact; and
a first air gap, sealed by the dielectric layer and defined by the first bit line, the substrate and the contact, wherein the first air gap is sealed within the first through third dielectric layer portions of the dielectric layer.