Invention Grant
- Patent Title: 2-T SRAM cell structure and method
- Patent Title (中): 2-T SRAM单元结构和方法
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Application No.: US12100441Application Date: 2008-04-10
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Publication No.: US07880238B2Publication Date: 2011-02-01
- Inventor: Qingqing Liang , Werner A. Rausch , Huilong Zhu
- Applicant: Qingqing Liang , Werner A. Rausch , Huilong Zhu
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent H. Daniel Schnurmann
- Main IPC: H01L29/76
- IPC: H01L29/76 ; H01L29/94 ; H01L31/062 ; H01L31/113

Abstract:
The present invention, in one embodiment, provides a memory device including a substrate including at least one device region; a first field effect transistor having a first threshold voltage and a second field effect transistor having a second threshold voltage, the second field effect transistor including a second active region present in the at least one device region of the substrate, the second active region including a second drain and a second source separated by a second channel region, wherein the second channel region includes a second trap that stores holes produced when the first field effect transistor is in the on state, wherein the holes stored in the second trap increase the second threshold voltage to be greater than the first threshold voltage.
Public/Granted literature
- US20090256205A1 2-T SRAM CELL STRUCTURE AND METHOD Public/Granted day:2009-10-15
Information query
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