Invention Grant
- Patent Title: Semiconductor device including an electrode lower layer and an electrode upper layer and method of manufacturing semiconductor device
-
Application No.: US14516639Application Date: 2014-10-17
-
Publication No.: US09362294B2Publication Date: 2016-06-07
- Inventor: Yuichi Nakao
- Applicant: ROHM CO., LTD.
- Applicant Address: JP Kyoto
- Assignee: ROHM CO., LTD.
- Current Assignee: ROHM CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Rabin & Berdo, P.C.
- Priority: JP2008-248901 20080926
- Main IPC: H01L27/115
- IPC: H01L27/115 ; H01L49/02

Abstract:
The semiconductor device according to the present invention includes a ferroelectric film and an electrode stacked on the ferroelectric film. The electrode has a multilayer structure of an electrode lower layer in contact with the ferroelectric film and an electrode upper layer stacked on the electrode lower layer. The electrode upper layer is made of a conductive material having an etching selection ratio with respect to the materials for the ferroelectric film and the electrode lower layer. The upper surface of the electrode upper layer is planarized.
Public/Granted literature
Information query
IPC分类: