发明公开
EP1716600A1 BIPOLAR READING TECHNIQUE FOR A MEMORY CELL HAVING AN ELECTRICALLY FLOATING BODY TRANSISTOR
审中-公开
BIPOLAR读取技术用于与晶体管电浮体的存储单元
- 专利标题: BIPOLAR READING TECHNIQUE FOR A MEMORY CELL HAVING AN ELECTRICALLY FLOATING BODY TRANSISTOR
- 专利标题(中): BIPOLAR读取技术用于与晶体管电浮体的存储单元
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申请号: EP05850314.5申请日: 2005-12-21
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公开(公告)号: EP1716600A1公开(公告)日: 2006-11-02
- 发明人: OKHONIN, Serguei , NAGOGA, Mikhail
- 申请人: Innovative Silicon SA
- 申请人地址: PSE EPFL 1015 Lausanne CH
- 专利权人: Innovative Silicon SA
- 当前专利权人: Innovative Silicon SA
- 当前专利权人地址: PSE EPFL 1015 Lausanne CH
- 代理机构: Eisenführ, Speiser & Partner
- 优先权: US638663P 20041222; US304387 20051215
- 国际公布: WO2006066890 20060629
- 主分类号: H01L29/78
- IPC分类号: H01L29/78 ; H01L27/108 ; G11C11/404
摘要:
A technique of sampling, sensing, reading and/or determining the data state of a memory cell of a memory cell array (for example, a memory cell array having a plurality of memory cells which consist of an electrically floating body transistor). In one embodiment, the present inventions are directed to a memory cell, having an electrically floating body transistor, and/or a technique of reading the data state in such a memory cell. In this regard, the present inventions employ the intrinsic bipolar transistor current to read and/or determine the data state of the electrically floating body memory cell (for example, whether the electrically floating body memory cell is programmed in a State '0' and State ''I'). During the read operation, the data state is determined primarily by or sensed substantially using the bipolar current responsive to the read control signals and significantly less by the interface channel current component, which is negligible relatively to the bipolar component. The bipolar transistor current may be very sensitive to the floating body potential due to the high gain of the intrinsic bipolar transistor. As such, the programming window obtainable with the bipolar reading technique may be considerably higher (for example, up two orders of magnitude higher) than the programming window employing a conventional reading technique (which is based primarily on the interface channel current component.
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