Programming memory with reduced pass voltage disturb and floating gate-to-control gate leakage
AssigneeSanDisk Technologies LLC
InventorsDeepanshu Dutta, Henry Chin
Life of this patent
Estimating the term…
Loading patent…
AssigneeSanDisk Technologies LLC
InventorsDeepanshu Dutta, Henry Chin
Estimating the term…
Program disturb is reduced in a non-volatile storage system by programming storage elements on a selected word line WLn in separate groups, according to the state of their WLn−1 neighbor storage element, and applying an optimal pass voltage to WLn−1 for each group. Initially, the states of the storage elements on WLn−1 are read. A program iteration includes multiple program pulses. A first program pulse is applied to WLn while a first pass voltage is applied to WLn−1, a first group of WLn storage elements is selected for programming, and a second group of WLn storage elements is inhibited. Next, a second program pulse is applied to WLn while a second pass voltage is applied to WLn−1, the second first group of WLn storage elements is selected for programming, and the first group of WLn storage elements is inhibited. A group can include one or more data states.
A method for operating a non-volatile storage system which includes a set of non-volatile storage elements in communication with a set of word lines and a set of bit lines, the method comprising:
Dependencies are inferred from the claim text.