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    • 2. 发明专利
    • Semiconductor device
    • 半导体器件
    • JP2014060415A
    • 2014-04-03
    • JP2013223610
    • 2013-10-28
    • Renesas Electronics Corpルネサスエレクトロニクス株式会社
    • FURUKAWA KATSUETSUNAKAYAMA SATORUKAMATA SHOGOKIYOFUJI SHIGEMITSU
    • H01L21/301H01L21/3205H01L21/768H01L23/522
    • PROBLEM TO BE SOLVED: To prevent contamination of a principal surface side of a semiconductor wafer in a process for grinding a back surface side of the semiconductor wafer.SOLUTION: At an intersection of a scribe region 1b of a semiconductor wafer 20 whose back surface side 2b is to be ground, a plurality of insulating layers 3 are laminated on a principal surface 2a in the same manner as an insulating layer (a first insulating layer) 3 constituting a wiring layer 5 laminated on a device region 1a. Moreover, in the same layer as wiring (uppermost wiring) formed in the uppermost wiring layer (an uppermost wiring layer) 5c disposed at the uppermost layer among the plurality of wiring layers 5 formed in a device region 1a, a metal pattern 10 is formed. Furthermore, an insulating layer (a second insulating layer) 9 covering the uppermost wiring is also formed on an upper surface of the metal pattern 10 so as to cover the same.
    • 要解决的问题:为了防止半导体晶片的背面侧的研磨工序中的半导体晶片的主面侧的污染。解决方案:在半导体晶片20的划线区域1b的交叉部分, 2b将被研磨,多个绝缘层3以与构成层叠在器件区域1a上的布线层5的绝缘层(第一绝缘层)3相同的方式层叠在主表面2a上。 此外,在形成在设置在设备区域1a中的多个布线层5中的最上层布线层(最上布线层)5c中形成的布线(最上布线)的同一层中,形成金属图案10 。 此外,覆盖最上面布线的绝缘层(第二绝缘层)9也形成在金属图案10的上表面上以覆盖其上。