Invention Grant
- Patent Title: Integrated circuits and methods of forming integrated circuits with interlayer dielectric protection
- Patent Title (中): 集成电路和形成具有层间绝缘保护的集成电路的方法
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Application No.: US13673549Application Date: 2012-11-09
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Publication No.: US09123783B2Publication Date: 2015-09-01
- Inventor: Xin Wang , Changyong Xiao , Yue Hu , Yong Meng Lee , Meng Luo , Jialin Weng , Wei Hua Tong , Wen-Pin Peng
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES, INC.
- Current Assignee: GLOBALFOUNDRIES, INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Ingrassia Fisher & Lorenz, P.C.
- Main IPC: H01L21/44
- IPC: H01L21/44 ; H01L21/768 ; H01L21/285

Abstract:
Integrated circuits and methods of forming integrated circuits are provided herein. In an embodiment, a method of forming an integrated circuit includes providing a base substrate having an embedded electrical contact disposed therein. An interlayer dielectric is formed overlying the base substrate, and a recess is etched through the interlayer dielectric over the embedded electrical contact. A protecting liner is formed in the recess and over an exposed surface of the embedded electrical contact in the recess. The protecting liner includes at least two liner layers that have materially different etch rates in different etchants. A portion of the protecting liner is removed over the surface of the embedded electrical contact to again expose the surface of the embedded electrical contact in the recess. An embedded electrical interconnect is formed in the recess. The embedded electrical interconnect overlies the protecting liner on sides of the recess.
Public/Granted literature
- US20140131881A1 INTEGRATED CIRCUITS AND METHODS OF FORMING INTEGRATED CIRCUITS WITH INTERLAYER DIELECTRIC PROTECTION Public/Granted day:2014-05-15
Information query
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