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US 6,633,499 B1Granted
Method for reducing voltage drops in symmetric array architectures
AssigneeSaifun Semiconductors Ltd.
InventorsBoaz Eitan, Eduardo Maayan
Life of this patent
Estimating the term…
Abstract
A symmetric segmented array has select transistors and column select transistors. At least one of the select and/or column select transistors is a low threshold voltage device. Alternatively, at least one select transistor and/or column select transistor of the array has a channel length shorter than a standard channel length of a process.
Claims4
A virtual ground array comprising:
- at least one memory cell;
- at least one select transistor to select a group of said at least one memory cell;
- at least one-select transistor not in an access path to said at least one select transistor,
- wherein a threshold voltage level of said at least one selector transistor is lower than a threshold voltage level of said at least one non-select transistor.
1 more element
A virtual ground array comprising:
- at least one memory cell;
- at least one select transistor to select a group of said at least one memory cell;
- at least non-select transistor not in an access path to said at least one select transistor,
- wherein a channel of said at least one select transistor is shorter than a channel of said at least one non-select transistor.
1 more element
A virtual ground array comprising:
- at least one select transistor;
- at least one column select transistor to select a group of said at least one select transistor;
- at least one non-select transistor not in an access path to said at least one column select transistor,
- wherein a threshold voltage level of said at least one column select transistor is lower than a threshold level of said at least one non-select transistor.
1 more element
A virtual ground array comprising:
- at least one select transistor;
- at least one column select transistor to select a group of said at least one select transistor,
- at least one non-select transistor not in an access path to said at least one column select transistor,
- wherein a channel of said at least one column select transistor is shorter than a channel of said at least one non-select transistor.
1 more element
Dependencies are inferred from the claim text.