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    • 6. 发明授权
    • Non-inverting buffer circuit device and semiconductor memory circuit
device
    • 同相缓冲电路器件和半导体存储器电路器件
    • US5304868A
    • 1994-04-19
    • US783781
    • 1991-10-29
    • Yuji YokoyamaKazuyuki MiyazawaHitoshi MiwaShoji Wada
    • Yuji YokoyamaKazuyuki MiyazawaHitoshi MiwaShoji Wada
    • G11C11/409G11C7/10G11C8/06G11C11/417H03K19/013H03K19/0175H03K19/0944H03K19/02G11C8/00
    • H03K19/0136G11C7/1051G11C8/06H03K19/09448
    • A non-inverting buffer circuit device suited for an input buffer circuit of a semiconductor memory is provided so that the number of logic gate stages can be reduced to realize a high speed operation. The circuit is designed in such a way that an MOS transistor at an input stage drives a bipolar transistor at an output stage to produce an output. An n-channel MOS transistor and a p-channel MOS transistor connected in parallel between the base and the collector of the bipolar transistor are on/off controlled by an inverted signal of the input digital signal and a non-inverted signal thereof, respectively. In another aspect, the input buffer circuit includes an inverted signal outputting circuit, and a non-inverted signal outputting circuit in the set mode the input signal in the non-inverted state and outputting in the reset mode the signal at the prescribed potential. The inverted signal outputting circuit includes a bipolar transistor producing an output signal at its collector potential, a first switching circuit for controlling supply of a collector current to the bipolar transistor, an n-channel MOS transistor, connected in parallel between the base and the collector of the bipolar transistor, for supplying a base current to the bipolar transistor in accordance with the input signal, and a second switching circuit for controlling supply of the base current to the bipolar transistor, wherein the first switching circuit and the second switching circuit are selectively on-off controlled.
    • 提供了适用于半导体存储器的输入缓冲电路的非反相缓冲电路装置,可以减少逻辑门级的数量,实现高速运算。 该电路被设计成使得输入级的MOS晶体管在输出级驱动双极晶体管以产生输出。 并联连接在双极型晶体管的基极和集电极之间的n沟道MOS晶体管和p沟道MOS晶体管分别通过输入数字信号的反相信号和非反相信号进行开/关控制。 在另一方面,输入缓冲电路包括反相信号输出电路和非反相信号输出电路,在设定模式下输入处于非反相状态的输入信号,并以复位模式输出处于规定电位的信号。 反相信号输出电路包括产生其集电极电位的输出信号的双极晶体管,用于控制向双极晶体管供给集电极电流的第一开关电路,并联在基极和集电极之间的n沟道MOS晶体管 用于根据输入信号向双极晶体管提供基极电流;以及第二开关电路,用于控制对双极晶体管的基极电流的供应,其中第一开关电路和第二开关电路选择性地 开关控制。
    • 8. 发明申请
    • Reducing Weak-Erase Type Read Disturb In 3D Non-Volatile Memory
    • 在3D非易失性存储器中减少弱擦除类型读取干扰
    • US20130201760A1
    • 2013-08-08
    • US13364518
    • 2012-02-02
    • Yingda DongMan L. MuiHitoshi Miwa
    • Yingda DongMan L. MuiHitoshi Miwa
    • G11C16/26G11C16/04
    • G11C16/26G11C11/5642G11C16/0483G11C16/3427H01L27/1157H01L27/11582
    • A read process for a 3D stacked memory device provides an optimum level of channel boosting for unselected memory strings, to repress both normal and weak-erase types of read disturbs. The channel is boosted by controlling of voltages of bit lines (Vbl), drain-side select gates (Vsgd_unsel), source-side select gates (Vsgs_unsel), a selected level (word line layer) of the memory device (Vcg_sel), and unselected levels of the memory device (Vcg_unsel). A channel can be boosted by initially making the drain-side and source-side select gates non-conductive, to allow capacitive coupling from an increasing Vcg_unsel. The drain-side and/or source-side select gates are then made non-conductive by raising Vsgd_unsel and/or Vsgs_unsel, interrupting the boosting. Additionally boosting can occur by making the drain-side and/or source-side select gates conductive again while Vcg_unsel is still increasing. Or, the channel can be driven at Vbl. Two-step boosting drives the channel at Vbl, then provides boosting by capacitive coupling.
    • 用于3D堆叠存储器件的读取处理为未选择的存储器串提供最佳级别的通道升压,以抑制正常和弱擦除类型的读取干扰。 通过控制位线(Vbl),漏极侧选择栅极(Vsgd_unsel),源极选择栅极(Vsgs_unsel),存储器件的选定电平(字线层)(Vcg_sel)的电压,以及 未选择的内存设备级别(Vcg_unsel)。 通过初始使漏极侧和源极选择栅极不导通,可以提高通道,以允许来自增加的Vcg_unsel的电容耦合。 然后通过升高Vsgd_unsel和/或Vsgs_unsel使漏极侧和/或源极侧选择栅极变得不导通,从而中断升压。 此外,当Vcg_unsel仍在增加时,通过使漏极侧和/或源极选择栅极再次导通,可以发生升压。 或者,通道可以在Vbl驱动。 两级升压驱动Vbl上的通道,然后通过电容耦合提供升压。