Invention Grant
- Patent Title: Interfacial layer for DRAM capacitor
- Patent Title (中): DRAM电容器界面层
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Application No.: US13238218Application Date: 2011-09-21
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Publication No.: US08722504B2Publication Date: 2014-05-13
- Inventor: Wim Deweerd , Hiroyuki Ode
- Applicant: Wim Deweerd , Hiroyuki Ode
- Applicant Address: US CA San Jose JP Tokyo
- Assignee: Intermolecular, Inc.,Elpida Memory, Inc.
- Current Assignee: Intermolecular, Inc.,Elpida Memory, Inc.
- Current Assignee Address: US CA San Jose JP Tokyo
- Main IPC: H01L21/20
- IPC: H01L21/20

Abstract:
A method for reducing leakage current in DRAM capacitor stacks by introducing dielectric interface layers between the electrodes and the bulk dielectric material. The dielectric interface layers are typically amorphous dielectric materials with a k value between about 10 and about 30 and are less than about 1.5 nm in thickness. Advantageously, the thickness of each of the dielectric interface layers is less than 1.0 nm. In some cases, only a single dielectric interface layer is used between the bulk dielectric material and the second electrode.
Public/Granted literature
- US20130071988A1 INTERFACIAL LAYER FOR DRAM CAPACITOR Public/Granted day:2013-03-21
Information query
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