Invention Grant
US07642144B2 Transistors with recessed active trenches for increased effective gate width
有权
具有凹入有源沟槽的晶体管,用于增加有效栅极宽度
- Patent Title: Transistors with recessed active trenches for increased effective gate width
- Patent Title (中): 具有凹入有源沟槽的晶体管,用于增加有效栅极宽度
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Application No.: US11644259Application Date: 2006-12-22
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Publication No.: US07642144B2Publication Date: 2010-01-05
- Inventor: Andrew Marshall , Gabriel George Barna
- Applicant: Andrew Marshall , Gabriel George Barna
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Warren L. Franz; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: H01L21/8234
- IPC: H01L21/8234

Abstract:
A method of manufacturing a semiconductor device having recessed active trenches by providing a substrate with STI and active regions, forming a first oxide layer on the substrate, forming an nitride layer on the first oxide layer, employing a photolithographic process to create at least one recessed active trench through the first oxide layer and the nitride layer and into the substrate to create an isolation region, wherein the at least one trench is perpendicular to at least one gate structure in an active area of the substrate, layering the trench with a second oxide layer, removing the first oxide layer and second oxide layer, forming a third oxide layer on the planar substrate with recessed active trench, and forming the at least one circuitous gate structure on the third oxide layer connecting at least one electronic source and drain.
Public/Granted literature
- US20080153218A1 Recessed active for increased weffective transistors Public/Granted day:2008-06-26
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