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    • 2. 发明申请
    • NONVOLATILE SEMICONDUCTOR MEMORY DEVICE
    • 非易失性半导体存储器件
    • US20090073740A1
    • 2009-03-19
    • US11776491
    • 2007-07-11
    • TAKU OGURAMASAAKI MIHARAYOSHIKI KAWAJIRI
    • TAKU OGURAMASAAKI MIHARAYOSHIKI KAWAJIRI
    • G11C5/06G11C11/00G11C7/00
    • G11C11/412G11C14/00G11C14/0063
    • An object of this invention is to provide a rewritable nonvolatile memory cell that can have a wide reading margin, and can control both a word line and a bit line by changing the level of Vcc. As a solution, a flip-flop is formed by cross (loop) connect of inverters comprising memory transistors that can control a threshold voltage by charge injection into the side spacer of the transistors. In the case of writing data to one memory transistor, a high voltage is supplied to a source of the memory transistor through a source line and a high voltage is supplied to a gate of the memory transistor through a load transistor of the other side inverter. In the case of erasing the written data, a high voltage is supplied to the source of the memory transistor through the source line.
    • 本发明的目的是提供一种可以具有宽的读取余量的可重写非易失性存储单元,并且可以通过改变Vcc的电平来控制字线和位线。 作为解决方案,触发器通过包括存储器晶体管的逆变器的交叉(环路)连接形成,该存储器晶体管可以通过电荷注入到晶体管的侧隔板中来控制阈值电压。 在向一个存储晶体管写入数据的情况下,通过源极线将高电压提供给存储晶体管的源极,并且通过另一侧反相器的负载晶体管将高电压提供给存储晶体管的栅极。 在擦除写入数据的情况下,通过源极线将高电压提供给存储晶体管的源极。