Flash memory device capable of improving a characteristic of a data retention

摘要

The present invention relates to a flash memory device that can improve the data retention characteristic , the height of the floating gate lower than the height of a conventional floating gate or configured to overlap the floating gate and device separation interval smaller than the width of a conventional floating gate and the device isolation width and the overlap interval by reducing the surface area of the floating gate that is affected by the mobile ions , flash it is possible to improve the data retention (data retention) properties in the memory cell .