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热词
    • 54. 发明授权
    • Biasing an integrated circuit well with a transistor electrode
    • 利用晶体管电极对集成电路进行良好的偏置
    • US6133597A
    • 2000-10-17
    • US900560
    • 1997-07-25
    • Li-Chun LiHuoy-Jong WuChung-Cheng WuSaysamone PittikounWen-Wei Lo
    • Li-Chun LiHuoy-Jong WuChung-Cheng WuSaysamone PittikounWen-Wei Lo
    • H01L21/761H01L21/762H01L21/8242H01L27/108H01L29/76H01L29/94H01L31/119
    • H01L27/10894H01L21/761H01L21/76202H01L27/10897
    • Dynamic Random Access Memory (DRAM) cells are formed in a P well formed in a biased deep N well (DNW). PMOS transistors are formed in N wells. The NMOS channels stop implant mask is modified not to be a reverse of the N well mask in order to block the channels stop implant from an N+ contact region used for DNW biasing. In DRAMs and other integrated circuits, a minimal spacing requirement between a well of an integrated circuit on the one hand and adjacent circuitry on the other hand is eliminated by laying out the adjacent circuitry so that the well is located adjacent to a transistor having an electrode connected to the same voltage as the voltage that biases the well. For example, in DRAMs, the minimal spacing requirement between the DNW and the read/write circuitry is eliminated by locating the DNW next to a transistor precharging the bit lines before memory accesses. One electrode of the transistor is connected to a precharge voltage. This electrode overlaps the DNW which is biased to the same precharge voltage. This electrode provides the DNW N+ contact region.
    • 动态随机存取存储器(DRAM)单元形成在偏置深N阱(DNW)中形成的P阱中。 在N个阱中形成PMOS晶体管。 NMOS通道停止注入掩模被修改为不是N阱掩模的反向,以阻止通道从用于DNW偏置的N +接触区域停止注入。 在DRAM和其他集成电路中,通过布置相邻电路来消除一方面集成电路的阱与另一方面的相邻电路之间的最小间隔要求,使得阱位于与具有电极的晶体管相邻的位置 连接到与电压偏压相同的电压。 例如,在DRAM中,通过将存储器访问之前的位线预先充电的晶体管旁边的DNW定位在DNW和读/写电路之间的最小间隔要求被消除。 晶体管的一个电极连接到预充电电压。 该电极与被偏置到相同预充电电压的DNW重叠。 该电极提供DNW N +接触区域。