Patent ID: 11864376
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method of making semiconductor device comprising:
forming a first transistor, wherein forming the first transistor comprises:
forming a gate electrode on a substrate, and forming a first source/drain region in the substrate;
forming a doped region in the substrate;

forming an insulating layer extending into the substrate, wherein the insulating layer is between the first source/drain region and the doped region, and a top surface of the insulating layer is above a top surface of the substrate;
electrically connecting a word line electrically connected to gate electrode;
electrically connecting a bit line electrically connected to the first source/drain region; and
electrically connecting a reference voltage connected to the doped region.