Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1990-08-21
1991-10-01
Hille, Rolf
Static information storage and retrieval
Magnetic bubbles
Guide structure
357 55, 365185, H01L 2968, H01L 2906, G11C 1134
Patent
active
050538390
ABSTRACT:
One embodiment of the invention provides an EPROM and a method of fabricating an EPROM with enhanced capacitive coupling. Trenched memory cells each comprise a pleat-shaped floating gate with the control gate nested in a fold of the floating gate to increase the coupling ratio with the control gate. As a result higher programming speed and improved cell density may be obtained for a given programming voltage. Formation of bit lines along trench walls results in lower bit line resistivity for a given cell density.
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Esquivel Agerico L.
Mitchell Allan T.
Tigelaar Howard L.
Comfort James T.
Hille Rolf
Limanek Robert P.
Sharp Melvin
Sorensen Douglas A.
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