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Methods of forming semiconductor constructions
 



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Document Number
US Patent 7214547
Issued Date
May 8, 2007
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Abstract
The invention includes a method of forming a semiconductor construction, such as an MRAM construction. A block is formed over a semiconductor substrate. First and second layers are formed over the block, and over a region of the substrate proximate the block. The first and second layers are removed from over the block while leaving portions of the first and second layers over the region proximate the block. At least some of the first layer is removed from under the second layer to form a channel over the region proximate the block. A material, such as a soft magnetic material, is provided within the channel. The invention also includes semiconductor constructions.
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Number of Claims:
29
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Published
May 8, 2007
Application Number
11/326,643
Filed
January 6, 2006
US Classification
438/3   257/E27.005 257/E43.004 257/E43.006 438/262 438/381
Int'l Classification
H01L   21/00   (20060101)  
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Parent Case
RELATED PATENT DATA This patent resulted from a divisional of U.S. patent application Ser. No. 10/622,295, filed Jul. 17, 2003, which is hereby incorporated by reference now U.S. Pat. No. 7,001,779; and which resulted from a divisional of U.S. patent application Ser. No. 10/121,298, filed Apr. 11, 2002, now U.S. Pat. No. 6,627,932, which is hereby incorporated by reference.
USPTO Field of Search
438/3   438/240   438/262   438/381  
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