Invention Grant
- Patent Title: Ferroelectric random access memory with plate line drive circuit
- Patent Title (中): 铁电随机存取存储器与板线驱动电路
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Application No.: US14863953Application Date: 2015-09-24
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Publication No.: US09530481B2Publication Date: 2016-12-27
- Inventor: Hitoshi Doi
- Applicant: LAPIS Semiconductor Co., Ltd.
- Applicant Address: JP Yokohama
- Assignee: LAPIS SEMICONDUCTOR CO., LTD.
- Current Assignee: LAPIS SEMICONDUCTOR CO., LTD.
- Current Assignee Address: JP Yokohama
- Agency: Rabin & Berdo, P.C.
- Priority: JP2014-193886 20140924
- Main IPC: G11C16/04
- IPC: G11C16/04 ; G11C11/22

Abstract:
A ferroelectric random access memory includes a memory cell matrix constituted by a plurality of 1T1C type memory cells. Each of the plurality of memory cells is connected to a j bit line and one pair of k word lines and k plate lines. A plate line drive circuit selectively applies one of a first potential and a second potential having a higher potential level than the first potential to one plate line of the k plate lines. An equalizing circuit performs an equalizing process in which the first potential is applied to each of the j bit lines. The plate line drive circuit applies a third potential having a potential level between the first and second potentials to the one plate line, before starting the equalizing process by the equalizing circuit.
Public/Granted literature
- US20160086648A1 FERROELECTRIC RANDOM ACCESS MEMORY Public/Granted day:2016-03-24
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