A new GIDL phenomenon by field effect of neighboring cell transistors and its control solutions in sub-30 nm NAND flash devices

We present a new field effect mechanism on I GIDL in NAND flash strings. According to the proposed 5-terminal GIDL model, special care should be taken to optimize the biasing levels of inhibit scheme. Suggested incremental biasing scheme can be one of the solutions for reducing critical field that enhances boosting efficiency and maximizes memory yields.