Invention Grant
- Patent Title: Nonvolatile memory device and method of manufacturing the same
- Patent Title (中): 非易失性存储器件及其制造方法
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Application No.: US13129215Application Date: 2010-09-13
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Publication No.: US08389972B2Publication Date: 2013-03-05
- Inventor: Takumi Mikawa , Yoshio Kawashima
- Applicant: Takumi Mikawa , Yoshio Kawashima
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2009-211390 20090914
- International Application: PCT/JP2010/005565 WO 20100913
- International Announcement: WO2011/030559 WO 20110317
- Main IPC: H01L29/02
- IPC: H01L29/02

Abstract:
To realize miniaturization and increased capacity of memories by lowering break voltage for causing resistance change and suppressing variation in break voltage.The nonvolatile memory device (10) in the present invention includes: a lower electrode (105) formed above a substrate (100); a first variable resistance layer (106a) formed above the lower electrode (105) and comprising a transitional metal oxide; a second variable resistance layer (106b) formed above the first variable resistance layer (106a) and comprising a transitional metal oxide having higher oxygen content than the transitional metal oxide of the first variable resistance layer (106a); and an upper electrode (107) formed above the second variable resistance layer (106b), wherein a step (106ax) is formed in an interface between the first variable is resistance layer (106a) and the second variable resistance layer (106b). The second variable resistance layer (106b) is formed covering the step (106ax) and has a bend (106bx) above the step (106ax).
Public/Granted literature
- US20110220863A1 NONVOLATILE MEMORY DEVICE AND METHOD OF MANUFACTURING THE SAME Public/Granted day:2011-09-15
Information query
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