Invention Grant
- Patent Title: Ring heater for a phase change memory device
- Patent Title (中): 环形加热器用于相变存储器件
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Application No.: US11531800Application Date: 2006-09-14
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Publication No.: US07863596B2Publication Date: 2011-01-04
- Inventor: Ilya V. Karpov , Sergey Kostylev , Charles C. Kuo
- Applicant: Ilya V. Karpov , Sergey Kostylev , Charles C. Kuo
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law Group PLLC
- Agent Lisa K. Jorgenson; Robert Iannucci
- Priority: EP05108413 20050914
- Main IPC: H01L47/00
- IPC: H01L47/00
Abstract:
A ring shaped heater surrounds a chalcogenide region along the length of a cylindrical solid phase portion thereof defining a change phase memory element. The chalcogenide region is formed in a sub-lithographic pore, so that a relatively compact structure is achieved. Furthermore, the ring contact between the heater and the cylindrical solid phase portion results in a more gradual transition of resistance versus programming current, enabling multilevel memories to be formed.
Public/Granted literature
- US20080067486A1 RING HEATER FOR A PHASE CHANGE MEMORY DEVICE Public/Granted day:2008-03-20
Information query
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