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    • 31. 发明授权
    • Semiconductor memory device having memory cells formed in trench and
manufacturing method therefor
    • 具有形成沟槽的存储单元的半导体存储器件及其制造方法
    • US5216266A
    • 1993-06-01
    • US682521
    • 1991-04-09
    • Hiroji Ozaki
    • Hiroji Ozaki
    • H01L27/10H01L21/8242H01L27/108H01L29/78
    • H01L29/7827H01L27/10841
    • A semiconductor memory device includes a memory cell formed in a trench. The trench is formed by a bottom wall formed of a semiconductor substrate and a sidewall extending from the bottom wall and formed of the semiconductor substrate and an insulation layer thereon. A capacitor includes a first electrode formed in the semiconductor substrate, a dielectric film being in contact with the first electrode and formed on the bottom wall and the sidewall portion formed of the semiconductor substrate, and a second electrode formed on the dielectric film. A field effect transistor includes, a gate electrode, and second conductivity type first and second impurity regions formed in a semiconductor sidewall layer. The semiconductor sidewall layer is formed on the sidewall portion formed of the insulation layer. The gate electrode is formed on a side surface of the semiconductor sidewall layer in the trench with an insulating film interposed therebetween. An interconnection layer is formed above the gate electrode in the trench. By forming all the elements constituting the memory cell in the trench, the memory cell can be effectively miniaturized and no parasitic MOS transistor is formed. Isolation width between the memory cells can be reduced. Capacitance of the capacitor can be increased without forming a field effect transistor having an extremely short channel length.
    • 半导体存储器件包括形成在沟槽中的存储单元。 沟槽由半导体衬底形成的底壁和从底壁延伸并由半导体衬底和绝缘层形成的侧壁形成。 电容器包括形成在半导体衬底中的第一电极,与第一电极接触并形成在底壁上的电介质膜和由半导体衬底形成的侧壁部分,以及形成在电介质膜上的第二电极。 场效应晶体管包括形成在半导体侧壁层中的栅电极和第二导电类型的第一和第二杂质区。 半导体侧壁层形成在由绝缘层形成的侧壁部上。 栅电极形成在沟槽中的半导体侧壁层的侧表面上,隔着绝缘膜。 在沟槽中的栅电极上形成互连层。 通过在沟槽中形成构成存储单元的所有元件,可以有效地使存储单元小型化,并且不形成寄生MOS晶体管。 可以减少存储单元之间的隔离宽度。 可以增加电容器的电容而不形成具有极短通道长度的场效应晶体管。
    • 34. 发明授权
    • Method of manufacturing semiconductor device, semiconductor equipment and manufacturing system
    • 制造半导体器件,半导体器件和制造系统的方法
    • US06319733B1
    • 2001-11-20
    • US09395219
    • 1999-09-14
    • Hiroji Ozaki
    • Hiroji Ozaki
    • G01R3126
    • H01L22/26
    • A manufacturing system compares information of foreign matter sensed by semiconductor equipment from on a semiconductor substrate with a selection reference thereby selecting optimum semiconductor equipment corresponding to the information of the foreign matter from a plurality of semiconductor equipment and processing the semiconductor substrate. Thus, a method of manufacturing a semiconductor device capable of improving the yield of the semiconductor device as well as a manufacturing system and semiconductor equipment to which the manufacturing method is applied, and a semiconductor device manufactured by the same are obtained.
    • 制造系统将来自半导体衬底的半导体设备感应的异物的信息与选择基准进行比较,从而从多个半导体设备中选择与异物的信息相对应的最佳半导体设备并处理半导体衬底。 因此,获得能够提高半导体器件的产量的半导体器件的制造方法以及应用制造方法的制造系统和半导体器件以及由其制造的半导体器件。