Method for manufacturing semiconductor integrated circuit device
    2.
    发明授权
    Method for manufacturing semiconductor integrated circuit device 失效
    半导体集成电路器件的制造方法

    公开(公告)号:US07084055B2

    公开(公告)日:2006-08-01

    申请号:US10930845

    申请日:2004-09-01

    IPC分类号: H01L21/4763

    摘要: It is desirable to prevent breakage and separation of wiring of a semiconductor integrated circuit device, such as a bit-line of a DRAM. To accomplish this, disclosed is a method in which, e.g., a high density plasma silicon oxide film is deposited on wirings (e.g., a bit-line that is connected to the source and drain region of a memory cell selection MISFET of a DRAM memory cell) by means of a high density plasma CVD technique, at a first temperature, and the structure is subjected to RTA (heat treatment) at a second temperature higher than the first temperature (e.g., 750° C.). Via holes are then formed in the high density plasma silicon oxide film, and first and second conductive films are then formed, the first conductive film being formed in the via holes and at a third temperature lower than the first temperature. The first and second conductive layers are then polished to remain selectively within the via holes. In heat treating the high density plasma silicon oxide film, the temperature is raised from the first temperature to the second temperature at a maximum speed of 60° C./second or less.

    摘要翻译: 期望防止诸如DRAM的位线的半导体集成电路器件的布线的断裂和分离。 为了实现这一点,公开了一种方法,其中例如将高密度等离子体氧化硅膜沉积在布线(例如,连接到DRAM存储器的存储器单元选择MISFET的源极和漏极区域的位线) 在第一温度下,通过高密度等离子体CVD技术,在高于第一温度(例如750℃)的第二温度下对该结构进行RTA(热处理)。 然后在高密度等离子体氧化硅膜中形成通孔,然后形成第一和第二导电膜,第一导电膜形成在通孔中并且在比第一温度低的第三温度下形成。 然后抛光第一和第二导电层以选择性地保持在通孔内。 在高密度等离子体氧化硅膜的热处理中,以60℃/秒以下的最高速度将温度从第一温度升高到第二温度。