Methods and apparatus utilizing predicted coupling effect in...

Details Methods and apparatus utilizing predicted coupling effect in... Methods and apparatus utilizing predicted coupling effect in...

2008-06-10

2010-06-29

Ho, Hoai V (Department: 2827)

Static information storage and retrieval

Floating gate

Disturbance control

C365S185240, C365S185280

Reexamination Certificate

active

07746691

ABSTRACT:
Methods and memory devices configured to utilize predicted coupling effects of neighboring memory cells in the programming of target memory cells can be utilized to tighten the distribution of threshold voltages for a given bit pattern by compensating for anticipated threshold voltage shift due to capacitive coupling, which can facilitate more discernable Vt ranges, and thus a higher number of bits of data per memory cell. Tightening the distribution of threshold voltages can further facilitate wider margins between Vt ranges, and thus an increased reliability in reading the correct data value of a memory cell.

REFERENCES:
patent: 5867429 (1999-02-01), Chen et al.
patent: 7535761 (2009-05-01), Park et al.
patent: 2006/0002190 (2006-01-01), Roohparvar
patent: 2006/0187712 (2006-08-01), Roohparvar
patent: 2007/0189073 (2007-08-01), Aritome

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