Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Reexamination Certificate
2006-09-28
2009-06-23
Luu, Chuong Anh (Department: 2892)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
C438S266000, C438S258000, C438S267000
Reexamination Certificate
active
07550348
ABSTRACT:
A storage device structure (10) has two bits of storage per control gate (34) and uses source side injection (SSI) to provide lower programming current. A control gate (34) overlies a drain electrode formed by a doped region (22) that is positioned in a semiconductor substrate (12). Two select gates (49and50) are implemented with conductive sidewall spacers adjacent to and lateral to the control gate (34). A source doped region (60) is positioned in the semiconductor substrate (12) adjacent to one of the select gates for providing a source of electrons to be injected into a storage layer (42) underlying the control gate. Lower programming results from the SSI method of programming and a compact memory cell size exists.
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Chindalore Gowrishankar L.
Hong Cheong M.
Clingan, Jr. James L.
Freescale Semiconductor Inc.
King Robert L.
Luu Chuong Anh
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