Invention Grant
US08772168B2 Formation of the dielectric cap layer for a replacement gate structure
有权
用于替代栅极结构的电介质盖层的形成
- Patent Title: Formation of the dielectric cap layer for a replacement gate structure
- Patent Title (中): 用于替代栅极结构的电介质盖层的形成
-
Application No.: US13353708Application Date: 2012-01-19
-
Publication No.: US08772168B2Publication Date: 2014-07-08
- Inventor: Ruilong Xie , Balasubramanian Pranatharthi Haran , David V. Horak , Su Chen Fan
- Applicant: Ruilong Xie , Balasubramanian Pranatharthi Haran , David V. Horak , Su Chen Fan
- Applicant Address: SG Singapore
- Assignee: GlobalFoundries Singapore Pte. Ltd.
- Current Assignee: GlobalFoundries Singapore Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: H01L21/311
- IPC: H01L21/311

Abstract:
Gate to contact shorts are reduced by forming dielectric caps in replaced gate structures. Embodiments include forming a replaced gate structure on a substrate, the replaced gate structure including an ILD having a cavity, a first metal on a top surface of the ILD and lining the cavity, and a second metal on the first metal and filling the cavity, planarizing the first and second metals, forming an oxide on the second metal, removing the oxide, recessing the first and second metals in the cavity, forming a recess, and filling the recess with a dielectric material. Embodiments further include dielectric caps having vertical sidewalls, a trapezoidal shape, a T-shape, or a Y-shape.
Public/Granted literature
- US20130187203A1 FORMATION OF THE DIELECTRIC CAP LAYER FOR A REPLACEMENT GATE STRUCTURE Public/Granted day:2013-07-25
Information query
IPC分类: