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    • 5. 发明申请
    • Process for manufacture of trench schottky
    • 沟槽肖特基的制造工艺
    • US20070264809A1
    • 2007-11-15
    • US11715225
    • 2007-03-07
    • Giovanni Richieri
    • Giovanni Richieri
    • H01L21/28
    • H01L29/47H01L29/66143H01L29/872H01L29/8725
    • A trench-type Schottky semiconductor device and a method for fabricating the trench-type Schottky semiconductor device are disclosed. The method includes the steps of forming an epitaxial (EPI) layer atop a silicon substrate, forming a nitride layer atop the EPI layer, patterning a plurality of windows in the nitride layer into an active region and a termination region, forming a plurality of trenches in the active and termination regions such that the plurality of trenches in the termination regions are spaced apart from each other so as to form a plurality of mesas, lining the first type of trenches with a gate oxide layer, and converting the mesas to oxide mesas; and then applying a barrier layer metal to the mesas in the device active area and in the termination trenches.
    • 公开了一种沟槽型肖特基半导体器件和制造沟槽型肖特基半导体器件的方法。 该方法包括以下步骤:在硅衬底之上形成外延层(EPI)层,在EPI层顶上形成氮化物层,将氮化物层中的多个窗口图形化为有源区和端接区,形成多个沟槽 在活性和终止区域中,使得终端区域中的多个沟槽彼此间隔开以形成多个台面,用第一类型的沟槽衬有栅极氧化物层,并将台面转换成氧化物台面 ; 然后将屏障层金属施加到器件有源区域和端接沟槽中的台面。