Memory device having ultra-lightly doped region

Abstract

The present application provides a memory device having an ultra-lightly doped region and a manufacturing method of the memory device. The memory device includes a semiconductor substrate including a word line extending into the semiconductor substrate, wherein the semiconductor substrate is defined with a source region, a drain region and an ultra-lightly doped region under the drain region, the word line is disposed between the source region and the drain region, and the ultra-lightly doped region is disposed at a sidewall of the word line.

Dependencies are inferred from the claim text.