Invention Grant
- Patent Title: Selective floating body SRAM cell
- Patent Title (中): 选择性浮体SRAM单元
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Application No.: US13045784Application Date: 2011-03-11
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Publication No.: US08378429B2Publication Date: 2013-02-19
- Inventor: Josephine B. Chang , Leland Chang , Steven J. Koester , Jeffrey W. Sleight
- Applicant: Josephine B. Chang , Leland Chang , Steven J. Koester , Jeffrey W. Sleight
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Harrington & Smith
- Agent Louis J. Percello
- Main IPC: H01L21/70
- IPC: H01L21/70

Abstract:
A memory cell has N≧16 transistors, in which two are access transistors, at least one pair [say (N-2)/2] are pull-up transistors, and at least another pair [say (N-2)/2] are pull-down transistors. The pull-up and pull-down transistors are all coupled between the two access transistors. Each of the access transistors and the pull-up transistors are the same type, p-type or n-type. Each of the pull-down transistors is the other type, p-type or n-type. The access transistors are floating body devices. The pull-down transistors are non-floating body devices. The pull-up transistors may be floating or non-floating body devices. Various specific implementations and methods of making the memory cell are also detailed.
Public/Granted literature
- US20110204445A1 Selective Floating Body SRAM Cell Public/Granted day:2011-08-25
Information query
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