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Integrated circuit having etch-resistant layer substantially covering shallow trench regions
   
Document Number
US Patent 6495897
Issued Date
December 17, 2002
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Abstract
An integrated circuit is fabricated with a layer of polysilicon located on top of shallow trench regions. The polysilicon is patterned so that the trench features are not exposed during an etching operation performed on the polysilicon layer. The process of fabricating transistor gate electrodes, therefore, is improved by reducing etch byproducts contributed by the shallow trench region features.
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Integrated circuit having etch-resistant layer substantially covering shallow trench regions - US Patent 6495897 Drawing
Drawing from US Patent 6495897
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Number of Claims:
11
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Owner
Intel Corporation (Santa Clara, CA)
Published
December 17, 2002
Application Number
09/691,932
Filed
October 19, 2000
US Classification
257/501   257/518 257/534 257/E21.206 257/E21.546 257/E21.621 257/E21.628
Int'l Classification
H01L   21/02   (20060101)   H01L   21/762   (20060101)   H01L   21/70   (20060101)   H01L   21/28   (20060101)   H01L   21/8234   (20060101)  
Examiner
Assistant Examiner
Parent Case
This application is a Divisional of U.S. Ser. No. 09/223,078, filed on Dec. 29, 1998.
USPTO Field of Search
257/501   257/510   257/534  
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