发明授权
- 专利标题: Self-biased ferroelectric space charge capacitor memory
- 专利标题(中): 自偏压铁电空间充电电容器存储器
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申请号: US66870申请日: 1993-05-25
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公开(公告)号: US5343421A公开(公告)日: 1994-08-30
- 发明人: Ciaran J. Brennan
- 申请人: Ciaran J. Brennan
- 申请人地址: MA Cambridge
- 专利权人: The Charles Stark Draper Laboratories, Inc.
- 当前专利权人: The Charles Stark Draper Laboratories, Inc.
- 当前专利权人地址: MA Cambridge
- 主分类号: G11C11/22
- IPC分类号: G11C11/22
摘要:
A ferroelectric space charge capacitor memory device includes a ferroelectric dielectric having a plurality of polarization states; a first electrode attached to the dielectric and establishing a first electric contact potential between the first electrode and the dielectric and a second electrode spaced from the first electrode and attached to the dielectric and establishing a second electric contact potential between the second electrode and the dielectric for generating a differential internal bias voltage on the dielectric which defines a number of capacitive levels, one representative of each of a corresponding number of polarization states and produces an electrical field which is less than the coercive electric field of the dielectric.
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