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    • 3. 发明授权
    • Methods for forming aluminum metal wirings
    • 铝金属布线形成方法
    • US06673718B1
    • 2004-01-06
    • US10305244
    • 2002-11-27
    • Jong-Myeong LeeIn-Sun ParkHyeon-Deok LeeJong-Sik Chun
    • Jong-Myeong LeeIn-Sun ParkHyeon-Deok LeeJong-Sik Chun
    • H01L2144
    • H01L21/76843H01L21/76856H01L21/76876H01L21/76879H01L21/76882H01L2221/1089
    • An aluminum wiring is selectively formed within a contact hole or groove of a substrate. An intermediate layer which includes nitrogen is formed over the main surface of a substrate and over the interior surface of the contact hole or groove. A first surface portion of the intermediate layer which is located over the main surface of the substrate is treated with a plasma to form a passivity layer at the first surface portion of the intermediate layer. Then, without an intervening vacuum break, an aluminum film is CAD deposited only over a second surface portion of the intermediate layer which is located over the interior surface of the contact hole or recess. The plasma treatment of the first surface portion of the intermediate layer prevents the CAD deposition of the aluminum film over the first surface portion of the intermediate layer.
    • 在基板的接触孔或凹槽内选择性地形成铝布线。 包含氮的中间层形成在基板的主表面上并在接触孔或凹槽的内表面上方。 用等离子体处理位于基板的主表面上方的中间层的第一表面部分,以在中间层的第一表面部分处形成被动层。 然后,没有中间真空断裂,铝膜仅沉积在中间层的位于接触孔或凹槽的内表面上方的第二表面部分上。 中间层的第一表面部分的等离子体处理防止铝膜在中间层的第一表面部分上的CAD沉积。