Static information storage and retrieval – Floating gate – Particular connection
Reexamination Certificate
2005-01-04
2005-01-04
Hoang, Huan (Department: 2818)
Static information storage and retrieval
Floating gate
Particular connection
C365S104000, C365S185330
Reexamination Certificate
active
06839278
ABSTRACT:
A memory device is achieved. The memory device comprises an array of Flash cells and mask ROM cells in a common substrate. Each Flash cell comprises a floating gate, a control gate, a source, a drain, and a channel. Each mask ROM cell comprises a gate, a source, a drain, and a channel. Each source of the mask ROM cells is shared with one Flash cell source. Each electrode of each mask ROM cell gate is coupled to at least one Flash cell control gate. The mask ROM cell gate electrodes comprise a common layer with electrodes of the Flash cell control gates. The mask ROM cells lie in spaces between the Flash cells in the array.
REFERENCES:
patent: 5666304 (1997-09-01), Hikawa et al.
patent: 5793678 (1998-08-01), Kato et al.
patent: 5844270 (1998-12-01), Kim et al.
patent: 5986933 (1999-11-01), Takeuchi et al.
Hsu Fu-Chang
Lee Peter
Ackerman Stephen B.
Aplus Flash Technology Inc.
Hoang Huan
Saile George D.
Sohnabel Doulgas R.
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