Invention Grant
- Patent Title: Bias temperature instability-influenced storage cell
- Patent Title (中): 偏置温度不稳定影响存储单元
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Application No.: US12505102Application Date: 2009-07-17
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Publication No.: US08107309B2Publication Date: 2012-01-31
- Inventor: Douglas M. Dewanz , Peter T. Freiburger , David P. Paulsen , John E. Sheets, II
- Applicant: Douglas M. Dewanz , Peter T. Freiburger , David P. Paulsen , John E. Sheets, II
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Bockhop & Associates LLC
- Main IPC: G11C7/04
- IPC: G11C7/04

Abstract:
In a method of using a memory cell employing a field effect transistor (FET), the FET is heated to a first temperature sufficient to support bias temperature instability in the FET. The bit line is driven to a high voltage state. The word line is driven to a predetermined voltage state that causes bias temperature instability in the FET. The temperature, the high voltage state on the bit line and the predetermined voltage state on the word line are maintained for an amount of time sufficient to change a threshold voltage of the FET to a state where a desired data value is stored on the FET. The FET is cooled to a second temperature that is cooler than the first temperature after the amount of time has expired.
Public/Granted literature
- US20110013445A1 Bias Temperature Instability-Influenced Storage Cell Public/Granted day:2011-01-20
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