Invention Grant
- Patent Title: Integrated circuits that include deep trench capacitors and methods for their fabrication
- Patent Title (中): 集成电路包括深沟槽电容器及其制造方法
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Application No.: US13218262Application Date: 2011-08-25
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Publication No.: US08853810B2Publication Date: 2014-10-07
- Inventor: Peter Baars , Till Schloesser
- Applicant: Peter Baars , Till Schloesser
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES, Inc.
- Current Assignee: GLOBALFOUNDRIES, Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Ingrassia Fisher & Lorenz, P.C.
- Main IPC: H01L27/108
- IPC: H01L27/108 ; H01L21/8242 ; H01L27/12 ; H01L21/84 ; H01L27/02 ; H01L49/02

Abstract:
Methods are provided for fabricating an integrated circuit that includes a deep trench capacitor. One method includes fabricating a plurality of transistors on a semiconductor substrate, the plurality of transistors each including gate structures, source and drain regions, and silicide contacts to the source and drain regions. A trench is then etched into the semiconductor substrate in proximity to the drain region of a selected transistor. The trench is filled with a layer of metal in contact with the semiconductor substrate, a layer of dielectric material overlying the layer of metal, and a second metal overlying the layer of dielectric material. A metal contact is then formed coupling the second metal to the silicide contact on the drain region of the selected transistor. A bit line is formed contacting the source region of the selected transistor and a word line is formed contacting the gate structure of the transistor.
Public/Granted literature
- US20130049089A1 INTEGRATED CIRCUITS THAT INCLUDE DEEP TRENCH CAPACITORS AND METHODS FOR THEIR FABRICATION Public/Granted day:2013-02-28
Information query
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