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    • 5. 发明授权
    • Semiconductor device with silicon through electrode and moisture barrier
    • 半导体器件带硅通电极和防潮层
    • US08749028B2
    • 2014-06-10
    • US13381070
    • 2009-07-01
    • Mayu AokiKenichi TakedaKazuyuki Hozawa
    • Mayu AokiKenichi TakedaKazuyuki Hozawa
    • H01L23/522
    • H01L23/522H01L21/76898H01L23/481H01L23/564H01L25/0657H01L2924/0002H01L2924/00
    • When a silicon through electrode is to be formed from a back surface (the surface on which a semiconductor device is not formed) of a silicon substrate, a wide range of an interlayer insulating film made of a Low-k material absorbs moisture, and there is a problem that the electrical characteristics of wiring are degraded. The above-described problem can be solved by forming at least a single ring-shaped frame laid out to enclose the silicon through electrode by using metal wirings in plural layers and a connection via connecting the upper and lower metal wirings in a Low-k material layer penetrated by the silicon through electrode and by forming a moisture barrier film made up of at least a metal wiring and a connection via between the silicon through electrode and a circuit wiring formed in the vicinity of the silicon through electrode.
    • 当从硅衬底的背面(未形成半导体器件的表面)形成硅通电极时,由Low-k材料制成的宽范围的层间绝缘膜吸收水分,在那里 是布线的电气特性劣化的问题。 上述问题可以通过形成至少一个单一的环形框架来布置,以通过使用多层金属布线将硅包围在电极中,并且通过在Low-k材料中连接上部和下部金属布线的连接 并且通过形成由至少金属布线构成的防潮膜和在硅通孔电极和形成在硅通孔电极附近的电路布线之间的连接通孔。