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    • 3. 发明授权
    • Semiconductor device and manufacturing method for the same
    • 半导体器件及其制造方法相同
    • US07229921B2
    • 2007-06-12
    • US10281306
    • 2002-10-28
    • Nobuo HironagaToshiyuki TakewakiHiroyuki KunishimaYoshiaki Yamamoto
    • Nobuo HironagaToshiyuki TakewakiHiroyuki KunishimaYoshiaki Yamamoto
    • H01L21/44H01L21/4763
    • H01L21/02068H01L21/02074H01L21/2855H01L21/32136H01L21/76802H01L21/76807H01L21/76838H01L21/76877H01L21/76889H01L23/5226H01L23/53238H01L23/53295H01L2924/0002H01L2924/00
    • In a method of manufacturing a semiconductor device, a first wiring line composed of a copper containing metal film is formed on or above a semiconductor substrate. A first interlayer insulating film is formed on a whole surface of the semiconductor substrate to cover the first wiring line. The first interlayer insulating film is selectively removed to form a connection hole reaching the first wiring line. A barrier metal film is formed to cover an inner surface of the connection hole and then a copper containing metal film is formed to fill the connection hole. The copper containing metal film formed outside the connection hole is removed. A second interlayer insulating film is formed on a whole surface of the semiconductor substrate to cover the copper containing metal film formed in the connection hole. The second interlayer insulating film is selectively removed to form a wiring line groove such that the copper containing metal film formed in the connection hole is exposed at a bottom. A barrier metal film is formed to cover an inside of the wiring line groove and then a copper containing metal film is formed to fill the wiring line groove. Then, the copper containing metal film outside the wiring line groove is removed to form a second wiring line.
    • 在制造半导体器件的方法中,在半导体衬底上或上方形成由含铜金属膜构成的第一布线。 第一层间绝缘膜形成在半导体衬底的整个表面上以覆盖第一布线。 选择性地去除第一层间绝缘膜以形成到达第一布线的连接孔。 形成阻挡金属膜以覆盖连接孔的内表面,然后形成含铜金属膜以填充连接孔。 除去形成在连接孔外部的含铜金属膜。 在半导体基板的整个表面上形成第二层间绝缘膜,以覆盖形成在连接孔中的含铜金属膜。 选择性地去除第二层间绝缘膜以形成布线槽,使得形成在连接孔中的含铜金属膜在底部露出。 形成阻挡金属膜以覆盖布线槽的内部,然后形成含铜金属膜以填充布线槽。 然后,除去布线线槽外部的含铜金属膜,形成第二布线。