NAND memory constructions and methods of forming NAND memory constructions
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United States of America Patent
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Mar 31, 2015
Grant Date -
Apr 10, 2014
app pub date -
Dec 9, 2013
filing date -
Aug 31, 2010
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Abstract
Some embodiments include NAND memory constructions. The constructions may contain semiconductor material pillars extending upwardly between dielectric regions, with individual pillars having a pair of opposing vertically-extending sides along a cross-section. First conductivity type regions may be along first sides of the pillars, and second conductivity type regions may be along second sides of the individual pillars; with the second conductivity type regions contacting interconnect lines. Vertical NAND strings may be over the pillars, and select devices may selectively couple the NAND strings with the interconnect lines. The select devices may have vertical channels directly against the semiconductor material pillars and directly against upper regions of the first and second conductivity type regions. Some embodiments include methods of forming NAND memory constructions.
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