Invention Grant
- Patent Title: Anneal to minimize leakage current in DRAM capacitor
- Patent Title (中): 退火以最小化DRAM电容器中的漏电流
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Application No.: US13295292Application Date: 2011-11-14
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Publication No.: US08647960B2Publication Date: 2014-02-11
- 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 forming a DRAM MIM capacitor stack comprises forming a first electrode layer, annealing the first electrode layer, forming a dielectric layer on the first electrode layer, annealing the dielectric layer, forming a second electrode layer on the dielectric layer, annealing the second electrode layer, patterning the capacitor stack, and annealing the capacitor stack for times greater than about 10 minutes, and advantageously greater than about 1 hour, at low temperatures (less than about 300 C) in an atmosphere containing less than about 25% oxygen and preferably less than about 10% oxygen.
Public/Granted literature
- US20130122682A1 ANNEAL TO MINIMIZE LEAKAGE CURRENT IN DRAM CAPACITOR Public/Granted day:2013-05-16
Information query
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