Patent ID: 11929362
Assignee: SK HYNIX INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of manufacturing a semiconductor integrated circuit device, the method comprising:
providing a semiconductor substrate having a first conductivity type;
forming a body contact region in the semiconductor substrate, the body contact region including first impurities having the first conductivity type;
forming isolation layers in the semiconductor substrate;
implanting second impurities with a second conductivity type opposite to the first conductivity type to the semiconductor substrate, thereby forming a first well which is spaced from the body contact region and a second well which contacts with a sidewall of the body contact region; and
forming a base and an emitter in the first well between the isolation layers and forming a collector in the body contact region,
wherein the first well and the second well are formed to have a same depth.