Invention Grant
- Patent Title: Ferroelectric memory
- Patent Title (中): 铁电存储器
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Application No.: US12563950Application Date: 2009-09-21
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Publication No.: US08059445B2Publication Date: 2011-11-15
- Inventor: Daisuke Hashimoto , Daisaburo Takashima , Hidehiro Shiga
- Applicant: Daisuke Hashimoto , Daisaburo Takashima , Hidehiro Shiga
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: JP2008-325195 20081222
- Main IPC: G11C11/22
- IPC: G11C11/22

Abstract:
A ferroelectric memory according to an embodiment of the present invention includes a memory cell array including plural memory cells, and provided with plural word lines, plural bit lines, and plural plate lines, each of the plate lines corresponding to at least two of the word lines, an access control circuit configured to perform an access operation to a selected cell which is selected from the memory cells, and a refresh control circuit configured to perform a refresh operation, in a background of the access operation, on a refresh cell which is selected from the memory cells, the refresh control circuit performing the refresh operation when a plate line connected to the selected cell and a bit line connected to the selected cell are at the same potential after the access operation.
Public/Granted literature
- US20100157650A1 FERROELECTRIC MEMORY Public/Granted day:2010-06-24
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