Title:
PHASE CHANGE MEMORY, ELECTRONIC DEVICE, AND PREPARATION METHOD FOR PHASE CHANGE MEMORY
Document Type and Number:
WIPO Patent Application WO/2022/262414
Kind Code:
A1
Abstract:
The present application relates to the technical field of data storage, and provides a phase change memory, an electronic device, and a preparation method for a phase change memory, to solve the problems of low reliability, short cycle life and the like of the phase change memory. The phase change memory provided by the present application comprises a plurality of phase change memory cells; each of the plurality of phase change memory cells comprises a first electrode, a phase change body, and a second electrode; and the first electrode, the phase change body, and the second electrode are sequentially arranged along a first direction. The phase change body has a first end surface facing the first electrode and a second end surface facing the second electrode. The phase change body further comprises a convergence portion, and the convergence portion is located between the first end surface and the second end surface. The cross-sectional area of the convergence portion perpendicular to the first direction is smaller than the area of the first end surface and the area of the second end surface. By arranging the convergence portion in the phase change body, a thermal effect is caused to aggregate at the convergence portion, thereby achieving higher reliability and longer cycle life.
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Inventors:
MA PING (CN)
LI XIANG (CN)
LI XIANG (CN)
Application Number:
PCT/CN2022/088232
Publication Date:
December 22, 2022
Filing Date:
April 21, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01L45/00; H01L27/24
Foreign References:
| CN101110467A | 2008-01-23 | |||
| US20060226409A1 | 2006-10-12 | |||
| TW200824112A | 2008-06-01 | |||
| CN1971964A | 2007-05-30 | |||
| CN1815363A | 2006-08-09 | |||
| US20070096248A1 | 2007-05-03 | |||
| US20080023685A1 | 2008-01-31 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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