Title:
CONTROL METHOD FOR FERROELECTRIC MEMORY AND RELATED APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/185204
Kind Code:
A1
Abstract:
Embodiments of the present application provide a control method for a ferroelectric memory and a related apparatus, used for stably enabling partial flipping of a ferroelectric device of a ferroelectric memory during write and read operations, such that the durability of the ferroelectric device is improved, and at the same time, the positive and negative stress of a ferroelectric material can be effectively balanced, thereby reducing the imprinting effect. Specific operation is as follows: within a first time period of a write operation, a control apparatus for the ferroelectric memory setting the voltage of a pre-charged line to a first voltage, and pre-charging the voltage of a floating gate to a second voltage, wherein the first voltage is greater than the second voltage, and a difference obtained by subtracting the second voltage from the first voltage is used for turning on a transistor on the pre-charged line; and within a second time period of the write operation, setting the voltage of the pre-charged line to 0 V, and setting the voltage of a selected word line to a third voltage, the third voltage and the second voltage being used for writing data to be written.
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Inventors:
LIU XIAOZHEN (CN)
BU SITONG (CN)
FANG YICHEN (CN)
TAN WANLIANG (CN)
LV HANGBING (CN)
XU JEFFREY JUNHAO (CN)
BU SITONG (CN)
FANG YICHEN (CN)
TAN WANLIANG (CN)
LV HANGBING (CN)
XU JEFFREY JUNHAO (CN)
Application Number:
PCT/CN2023/071225
Publication Date:
October 05, 2023
Filing Date:
January 09, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G11C11/4074; G11C11/22
Domestic Patent References:
| WO2021140193A1 | 2021-07-15 |
Foreign References:
| CN112489705A | 2021-03-12 | |||
| CN111833933A | 2020-10-27 | |||
| JP2007149230A | 2007-06-14 | |||
| US20020057590A1 | 2002-05-16 | |||
| US20050146913A1 | 2005-07-07 | |||
| US20050180220A1 | 2005-08-18 | |||
| US20050276089A1 | 2005-12-15 | |||
| US20190206455A1 | 2019-07-04 | |||
| US6356475B1 | 2002-03-12 | |||
| US9767880B1 | 2017-09-19 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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