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    • 22. 发明授权
    • Semiconductor device with integrated resistive element and method of making
    • 具有集成电阻元件的半导体器件及其制造方法
    • US07648884B2
    • 2010-01-19
    • US11680199
    • 2007-02-28
    • Byoung W. MinJames K. SchaefferDavid C. Sing
    • Byoung W. MinJames K. SchaefferDavid C. Sing
    • H01L21/20
    • H01L27/0629H01L28/20
    • A resistive device (44) and a transistor (42) are formed. Each uses a portion of a metal layer (18) that is formed at the same time and thus additional process steps are avoided to remove the metal from the resistive device. The metal used in the resistive device is selectively treated to increase the resistance in the resistive device. A polycrystalline semiconductor material layer (34) overlies the metal layer in the resistive device. The combination of these layers provides the resistive device. In one form the metal is treated after formation of the polycrystalline semiconductor material layer. In one form the metal treatment involves an implant of a species, such as oxygen, to increase the resistivity of the metal. Various transistor structures are formed using the untreated portion of the metal layer as a control electrode.
    • 形成电阻器件(44)和晶体管(42)。 每个都使用同时形成的金属层(18)的一部分,因此避免了额外的工艺步骤以从电阻器件去除金属。 选择性地处理在电阻器件中使用的金属以增加电阻器件中的电阻。 多晶半导体材料层(34)覆盖电阻器件中的金属层。 这些层的组合提供了电阻装置。 在一种形式中,在形成多晶半导体材料层之后处理金属。 在一种形式中,金属处理包括物质(例如氧)的植入物以增加金属的电阻率。 使用金属层的未处理部分作为控制电极形成各种晶体管结构。