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    • 6. 发明授权
    • Method of fabricating efuse structure, resistor sturcture and transistor sturcture
    • 制造efuse结构,电阻结构和晶体管结构的方法
    • US08003461B1
    • 2011-08-23
    • US12700707
    • 2010-02-04
    • Che-Hua HsuZhi-Cheng LeeCheng-Guo ChenShao-Hua Hsu
    • Che-Hua HsuZhi-Cheng LeeCheng-Guo ChenShao-Hua Hsu
    • H01L21/8242
    • H01L21/02H01L21/8234
    • A method of fabricating an efuse structure, a resistor structure and a transistor structure. First, a work function metal layer, a polysilicon layer and a first hard mask layer are formed to cover a transistor region, a resistor region and an e-fuse region on a substrate. Then, the work function metal layer on the resistor region and the efuse region is removed by using a first photomask. Later, a gate, a resistor, an efuse are formed in the transistor region, the resistor region and the efuse region respectively. After that, a dielectric layer aligning with the top surface of the gate is formed. Later, the polysilicon layer in the gate is removed by taking a second hard mask as a mask to form a recess. Finally, a metal layer fills up the recess.
    • 一种制造efuse结构,电阻器结构和晶体管结构的方法。 首先,形成工作功能金属层,多晶硅层和第一硬掩模层,以覆盖基板上的晶体管区域,电阻区域和e熔丝区域。 然后,通过使用第一光掩模去除电阻器区域和efuse区域上的功函数金属层。 之后,在晶体管区域,电阻区域和efuse区域分别形成栅极,电阻器,efuse。 之后,形成与栅极顶表面对准的电介质层。 之后,通过取第二硬掩模作为掩模来除去栅极中的多晶硅层以形成凹陷。 最后,金属层填满凹槽。