Patent ID: 9449713
Filing Date: 2016-09-20
CPC Classification: G11C,H01L

Claim Text:
1. A method comprising: over-programming thin film storage (TFS) non-volatile memory cells having a plurality of nanocrystals on a semiconductor wafer with a first voltage that is higher than a highest voltage used to program the TFS non-volatile memory cells during normal operation of the memory cells, wherein over-programming includes additional electron accumulation in the plurality of nanocrystals such that the TFS non-volatile memory cells have a higher threshold voltage than would be if normal programming was performed; and before singulating the semiconductor wafer into individual die and with the TFS non-volatile memory cells in an over-programmed state, exposing the semiconductor wafer to a first temperature above a product specification temperature for a period of time sufficient to induce redistribution of charge among storage elements in the TFS non-volatile memory cells.