Patent ID: 11894273
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. The method of claim 15, wherein the first S/D contact is formed after forming the second S/D contact, and forming the second S/D contact and the first S/D contact comprises:
forming an interlayer dielectric layer to cover the first gate structure and the second gate structure;
patterning the interlayer dielectric layer using a first mask layer as a mask to define a second contact hole in the interlayer dielectric layer;
forming the second S/D contact in the second contact hole connected to the second S/D region;
removing the first patterned mask layer;
patterning the interlayer dielectric using a second mask layer as a mask to define a first contact hole in the interlayer dielectric layer;
forming the first contact in the first contact hole connected to the first S/D region; and
removing the second mask layer.