Title:
VARIABLE-RESISTANCE-TYPE NON-VOLATILE STORAGE DEVICE AND WRITE METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/009618
Kind Code:
A1
Abstract:
This variable-resistance-type non-volatile storage device comprises a variable resistance element (RSE) capable of reversibly changing the state of resistance between a high resistance state and a low resistance state, and a current supply circuit (24) which passes, to the variable resistance element, a resistance-lowering current for changing the state of resistance from the high resistance state to the low resistance state, wherein: a current waveform of the resistance-lowering current includes, in a time axis, a first period and a second period subsequent to the first period; with the resistance-lowering current, a first current is applied to the variable resistance element in the first period, and a second current smaller than the first current is applied to the variable resistance element in the second period; and the first current at the end of the first period is not zero, and the second current at the start of the second period is not zero.
Inventors:
KAWAI KEN
KATAYAMA KOJI
KATAYAMA KOJI
Application Number:
PCT/JP2021/022553
Publication Date:
January 13, 2022
Filing Date:
June 14, 2021
Export Citation:
Assignee:
NUVOTON TECH CORPORATION JAPAN (JP)
International Classes:
G11C13/00
Domestic Patent References:
| WO2019131025A1 | 2019-07-04 |
Foreign References:
| US20130163349A1 | 2013-06-27 | |||
| US20120230080A1 | 2012-09-13 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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