Title:
MITIGATING CHANNEL COUPLING EFFECTS DURING SENSING OF NON-VOLATILE STORAGE ELEMENTS
Document Type and Number:
WIPO Patent Application WO/2011/140057
Kind Code:
A8
Abstract:
Channel coupling effects during verify and read of non-volatile storage are mitigated by matching the amount of channel coupling that occurs during read with channel coupling that occurred during verify. All bit lines may be read together during both verify and read. In one embodiment, first bias conditions are established on bit lines when verifying each of a plurality of programmed states. A separate set of first bias conditions may be established when verifying each state. Biasing a bit line may be based on the state to which a non-volatile storage elements on the bit line is being programmed. A separate set of second bias conditions are established for each state being read. The second bias conditions for a given state substantially match the first bias conditions for the given state.
Inventors:
DONG YINGQA (US)
LI YAN (US)
HSU CYNTHIA (US)
LI YAN (US)
HSU CYNTHIA (US)
Application Number:
PCT/US2011/034951
Publication Date:
March 12, 2015
Filing Date:
May 03, 2011
Export Citation:
Assignee:
SANDISK TECHNOLOGIES INC (US)
DONG YINGQA (US)
LI YAN (US)
HSU CYNTHIA (US)
DONG YINGQA (US)
LI YAN (US)
HSU CYNTHIA (US)
International Classes:
G11C11/56
Attorney, Agent or Firm:
MAGEN, Burt (LLP575 Market Street, Suite 250, San Francisco CA, US)
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