Memory structure

Abstract

A memory structure includes: a substrate including a memory array region and a peripheral circuit region; a plurality of bit line structures disposed in the memory array region of the substrate; a dummy bit line structure disposed on the substrate, wherein the dummy bit line structure is disposed in the memory array region and immediately adjacent to the peripheral circuit region; a plurality of contacts disposed between the bit line structures and in the memory array region; a dielectric layer disposed on the substrate and in the peripheral circuit region; and a protective structure disposed in the memory array region and immediately adjacent to the peripheral circuit region, wherein the protective structure includes the dummy bit line structure and a top surface of the protective structure is higher than top surfaces of the bit line structures.

Dependencies are inferred from the claim text.