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    • 33. 发明授权
    • Method for fabricating an embedded dynamic random access memory using
self-aligned silicide technology
    • 使用自对准硅化物技术制造嵌入式动态随机存取存储器的方法
    • US6133130A
    • 2000-10-17
    • US181530
    • 1998-10-28
    • Yung-Chang LinTung-Po ChenJacob Chen
    • Yung-Chang LinTung-Po ChenJacob Chen
    • H01L21/285H01L21/336H01L21/8234H01L21/8242H01L21/3205H01L21/4763
    • H01L27/10873H01L21/28518H01L21/823443H01L27/10894H01L29/665
    • A method includes a self-aligned silicide (Salicide) technology in fabrication of an embedded dynamic random access memory (DRAM). On a silicon wafer, a first MOS transistor is formed in a logic device region, and second MOS transistor is formed in a memory device region. The improved method includes forming an insulating layer over the substrate at least covering the first (second) MOS transistor. A top portion of the insulating layer is removed to expose only a top portion of the first (second) gate structure. A portion of the insulating layer covering the first MOS transistor is removed to expose the first MOS transistor. Using the remaining insulating layer on the second MOS transistor as a mask, the Salicide fabrication process is performed to form a self-aligned silicide layer on the first interchangeable source/drain region, and the exposed top surface of the first (second) polysilicon gate structure.
    • 一种方法包括在嵌入式动态随机存取存储器(DRAM)的制造中的自对准硅化物(Salicide)技术。 在硅晶片上,第一MOS晶体管形成在逻辑器件区域中,第二MOS晶体管形成在存储器件区域中。 改进的方法包括在衬底上形成至少覆盖第一(第二)MOS晶体管的绝缘层。 去除绝缘层的顶部以仅露出第一(第二)栅极结构的顶部。 覆盖第一MOS晶体管的绝缘层的一部分被去除以暴露第一MOS晶体管。 使用第二MOS晶体管上的剩余绝缘层作为掩模,执行自对准硅化物制造工艺以在第一可互换源极/漏极区上形成自对准硅化物层,并且第一(第二)多晶硅栅极的暴露的顶表面 结构体。
    • 34. 发明授权
    • Method of reducing loss of metal silicide in pre-metal etching
    • 在金属前蚀刻中减少金属硅化物的损失的方法
    • US5970379A
    • 1999-10-19
    • US678824
    • 1996-07-12
    • Tung-Po ChenHong-Tsz Pan
    • Tung-Po ChenHong-Tsz Pan
    • H01L21/285H01L21/336H01L21/768H01L21/44
    • H01L21/76805H01L21/28518H01L21/76814H01L29/665
    • A method of reducing the loss of metal silicide in pre-metal etching which includes the following steps. A polysilicon gate electrode and implanted source/drain electrodes are formed on a silicon substrate. A metal silicide layer is formed on the polysilicon gate electrode and the source/drain electrodes. On the surface of the substrate, the polysilicon gate electrode, the source-drain electrodes region and the metal silicide layer, a protecting glass for insulation is formed and then dry etched to form a contact window. The metal silicide layer will form a damaged metal silicide layer in the contact window. Thereafter, a thermal process is conducted to repair the damaged metal silicide layer and finally, pre-metal etching is conducted completing the process. Pursuant to this method, the extremely low resistance of the metal silicide remains.
    • 一种降低金属硅化物在金属前蚀刻中的损耗的方法,包括以下步骤。 在硅衬底上形成多晶硅栅电极和注入源/漏电极。 在多晶硅栅极电极和源极/漏极上形成金属硅化物层。 在基板的表面上形成多晶硅栅电极,源极 - 漏极区域和金属硅化物层,形成用于绝缘的保护玻璃,然后干法蚀刻以形成接触窗口。 金属硅化物层将在接触窗中形成损坏的金属硅化物层。 此后,进行热处理以修复损坏的金属硅化物层,最后完成该工艺的金属前蚀刻。 根据该方法,残留金属硅化物的极低电阻。