Invention Grant
- Patent Title: Stacked capacitor SRAM cell
- Patent Title (中): 堆叠电容SRAM单元
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Application No.: US124371Application Date: 1993-09-20
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Publication No.: US5324961APublication Date: 1994-06-28
- Inventor: Mark S. Rodder
- Applicant: Mark S. Rodder
- Applicant Address: TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: TX Dallas
- Main IPC: G11C11/412
- IPC: G11C11/412 ; H01L27/11
Abstract:
This is an SRAM cell and the cell can comprise: two NMOS drive transistors; two PMOS load transistors; first and second bottom capacitor plates 50,52, with the first plate 50 being over a gate 34 of one of the drive transistors and the second plate 52 being over a gate 40 of another of the drive transistors; a layer of dielectric material 68 over the first and second bottom capacitor plates; and first and second top capacitor plates 20, 26 , over the dielectric layer, with the first top capacitor 20 plate forming a gate of one of the load transistors and with the second top capacitor plate 26 forming a gate of another of the load transistors whereby the capacitor plates form two cross-coupled capacitors between the gates of the drive transistors and the stability of the cell is enhanced. This is also a method of forming an SRAM cell.
Public/Granted literature
- USD434361S Rigid tonneau cover with integral tool box Public/Granted day:2000-11-28
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