Invention Grant
- Patent Title: Self aligned contact scheme
- Patent Title (中): 自对准接触方案
-
Application No.: US15090341Application Date: 2016-04-04
-
Publication No.: US09548366B1Publication Date: 2017-01-17
- Inventor: Tsai-Jung Ho , Kuang-Yuan Hsu , Pei-Ren Jeng
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Slater Matsil, LLP
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H01L29/417 ; H01L29/78 ; H01L29/66 ; H01L21/8234

Abstract:
An embodiment is a method including forming a first gate over a substrate, the first gate having first gate spacers on opposing sidewalls, forming a first hard mask layer over the first gate, forming a second hard mask layer over the first hard mask layer, the second hard mask layer having a different material composition than the first hard mask layer, forming a first dielectric layer adjacent and over the first gate, etching a first opening through the first dielectric layer to expose a portion of the substrate, at least a portion of the second hard mask layer being exposed in the first opening, filling the first opening with a conductive material, and removing the second hard mask layer and the portions of the conductive material and first dielectric layer above the first hard mask layer to form a first conductive contact in the remaining first dielectric layer.
Information query
IPC分类: