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    • 1. 发明授权
    • Nonvolatile semiconductor memory using an adjustable threshold voltage transistor in a flip-flop
    • 非挥发性半导体存储器在触发器中使用可调阈值电压晶体管
    • US07969780B2
    • 2011-06-28
    • US11776491
    • 2007-07-11
    • Taku OguraMasaaki MiharaYoshiki Kawajiri
    • Taku OguraMasaaki MiharaYoshiki Kawajiri
    • G11C11/34G11C14/00
    • 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 including 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,触发器是通过包括存储晶体管的逆变器的交叉(环路)连接形成的,所述存储器晶体管可以通过电荷注入到晶体管的侧面间隔来控制阈值电压。 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。
    • 2. 发明申请
    • NON-VOLATILE SEMICONDUCTOR STORAGE DEVICE
    • 非挥发性半导体存储器件
    • US20080019162A1
    • 2008-01-24
    • US11758108
    • 2007-06-05
    • Taku OGURAMasaaki MiharaYoshiki Kawajiri
    • Taku OGURAMasaaki MiharaYoshiki Kawajiri
    • G11C5/06
    • G11C11/412G11C14/00G11C14/0063
    • This non-volatile semiconductor storage device includes a flip-flop in which two inverters, each consisting of a load transistor and a storage transistor connected in series, are cross-connected; and two gate transistors, each respectively connected to a node of the flip-flop on a side thereof. The storage transistors of the inverters are constituted by storage transistors which can be threshold voltage controlled by injection of electrons into the neighborhood of their gates. This non-volatile semiconductor storage device further includes two bit lines, each of which is connected to a respective one of the two gate transistors; a word line which is connected to both of the gate electrodes of the two gate transistors; a first voltage supply line which is connected to the sources of the storage transistors of the inverters; and a second voltage supply line which is connected to the sources of the load transistors of the inverters.
    • 这种非易失性半导体存储器件包括一个触发器,其中每个由串联连接的负载晶体管和存储晶体管组成的两个反相器是交叉连接的; 以及两个栅极晶体管,每个分别在触发器的一侧分别连接到触发器的节点。 反相器的存储晶体管由存储晶体管构成,其可以通过将电子注入其栅极附近来控制阈值电压。 该非易失性半导体存储装置还包括两个位线,每个位线连接到两个栅极晶体管中的相应一个; 连接到两个栅极晶体管的两个栅电极的字线; 连接到逆变器的存储晶体管的源极的第一电源线; 以及与逆变器的负载晶体管的源极连接的第二电压供给线。