Invention Grant
US08542531B2 Charge equilibrium acceleration in a floating gate memory device via a reverse field pulse 有权
通过反向场脉冲在浮动栅极存储器件中的充电平衡加速度

Charge equilibrium acceleration in a floating gate memory device via a reverse field pulse
Abstract:
Methods for accelerating charge equilibrium in a non-volatile memory device using floating gate memory cells are disclosed. Memory devices and storage systems using charge equilibrium acceleration are also disclosed. In one such method, a programming pulse is applied to the word line to change an amount of charge stored on the floating gate of the memory cells being programmed. A reverse field pulse is then applied to the memory cell using only voltages greater than or equal to about 0 volts. The reverse field pulse accelerates charge equilibrium by moving any electrons trapped in the insulating oxide layers to a stable location so that the threshold voltage is stabilized. After the reverse field pulse, a program verify operation is performed and additional programming pulses and reverse field pulses are applied as needed to properly program the memory cell.
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