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    • 8. 发明授权
    • Depletion mode semiconductor device with trench gate and manufacturing method thereof
    • 具有沟槽栅的缺陷模式半导体器件及其制造方法
    • US08680609B2
    • 2014-03-25
    • US13091160
    • 2011-04-21
    • Wei-Chieh LinJia-Fu Lin
    • Wei-Chieh LinJia-Fu Lin
    • H01L29/76
    • H01L29/7828H01L21/26586H01L29/41766H01L29/66666
    • A manufacturing method of a depletion mode trench semiconductor device includes following steps. Firstly, a substrate including a drift epitaxial layer disposed thereon is provided. A trench is disposed in the drift epitaxial layer. A gate dielectric layer is formed on an inner sidewall of the trench and an upper surface of the drift epitaxial layer. A base doped region is formed in the drift epitaxial layer and adjacent to a side of the trench. A thin doped region is formed and conformally contacts the gate dielectric layer. A gate material layer is formed to fill the trench. A source doped region is formed in the base doped region, and the source doped region overlaps the thin doped region at a side of the trench. Finally, a contact doped region is formed to overlap the thin doped region, and the contact doped region is adjacent to the source doped region.
    • 耗尽型沟槽半导体器件的制造方法包括以下步骤。 首先,提供包括设置在其上的漂移外延层的衬底。 沟槽设置在漂移外延层中。 栅极电介质层形成在沟槽的内侧壁和漂移外延层的上表面上。 基极掺杂区域形成在漂移外延层中并与沟槽的一侧相邻。 形成薄的掺杂区域并保形地接触栅极电介质层。 形成栅极材料层以填充沟槽。 源极掺杂区域形成在基极掺杂区域中,并且源极掺杂区域与沟槽侧面的薄掺杂区域重叠。 最后,形成接触掺杂区域以与薄掺杂区域重叠,并且接触掺杂区域与源极掺杂区域相邻。
    • 10. 发明申请
    • DEPLETION MODE TRENCH SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
    • 分离模式TRENCH半导体器件及其制造方法
    • US20120139037A1
    • 2012-06-07
    • US13091160
    • 2011-04-21
    • Wei-Chieh LinJia-Fu Lin
    • Wei-Chieh LinJia-Fu Lin
    • H01L29/78H01L21/336
    • H01L29/7828H01L21/26586H01L29/41766H01L29/66666
    • A manufacturing method of a depletion mode trench semiconductor device includes following steps. Firstly, a substrate including a drift epitaxial layer disposed thereon is provided. A trench is disposed in the drift epitaxial layer. A gate dielectric layer is formed on an inner sidewall of the trench and an upper surface of the drift epitaxial layer. A base doped region is formed in the drift epitaxial layer and adjacent to a side of the trench. A thin doped region is formed and conformally contacts the gate dielectric layer. A gate material layer is formed to fill the trench. A source doped region is formed in the base doped region, and the source doped region overlaps the thin doped region at a side of the trench. Finally, a contact doped region is formed to overlap the thin doped region, and the contact doped region is adjacent to the source doped region.
    • 耗尽型沟槽半导体器件的制造方法包括以下步骤。 首先,提供包括设置在其上的漂移外延层的衬底。 沟槽设置在漂移外延层中。 栅极电介质层形成在沟槽的内侧壁和漂移外延层的上表面上。 基极掺杂区域形成在漂移外延层中并与沟槽的一侧相邻。 形成薄的掺杂区域并保形地接触栅极电介质层。 形成栅极材料层以填充沟槽。 源极掺杂区域形成在基极掺杂区域中,并且源极掺杂区域与沟槽侧面的薄掺杂区域重叠。 最后,形成接触掺杂区域以与薄掺杂区域重叠,并且接触掺杂区域与源极掺杂区域相邻。