- Patent Title: Raised epitaxial LDD in MuGFETs and methods for forming the same
-
Application No.: US15367020Application Date: 2016-12-01
-
Publication No.: US09941368B2Publication Date: 2018-04-10
- Inventor: Yonag-Yan Lu , Hou-Yu Chen , Shyh-Horng Yang
- 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: H01L29/76
- IPC: H01L29/76 ; H01L29/417 ; H01L29/78 ; H01L29/66 ; H01L29/04 ; H01L29/06 ; H01L29/08

Abstract:
Embodiments include Multiple Gate Field-Effect Transistors (MuGFETs) and methods of forming them. In an embodiment, a structure includes a substrate, a fin, masking dielectric layer portions, and a raised epitaxial lightly doped source/drain (LDD) region. The substrate includes the fin. The masking dielectric layer portions are along sidewalls of the fin. An upper portion of the fin protrudes from the masking dielectric layer portions. A first spacer is along a sidewall of a gate structure over a channel region of the fin. A second spacer is along the first spacer. The raised epitaxial LDD region is on the upper portion of the fin, and the raised epitaxial LDD region adjoins a sidewall of the first spacer and is disposed under the second spacer. The raised epitaxial LDD region extends from the upper portion of the fin in at least two laterally opposed directions and a vertical direction.
Public/Granted literature
- US20170084709A1 RAISED EPITAXIAL LDD IN MUGFETS AND METHODS FOR FORMING THE SAME Public/Granted day:2017-03-23
Information query
IPC分类: