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    • 97. 发明申请
    • METAL OXIDE SEMICONDUCTOR (MOS) DEVICE AND MANUFACTURING METHOD THEREOF
    • 金属氧化物半导体(MOS)器件及其制造方法
    • US20150091087A1
    • 2015-04-02
    • US14456734
    • 2014-08-11
    • Tsung-Yi Huang
    • Tsung-Yi Huang
    • H01L29/78H01L29/66H01L29/08H01L21/265
    • H01L29/66492H01L29/1045H01L29/6659H01L29/66659H01L29/7835
    • The present invention discloses a metal oxide semiconductor (MOS) device and a manufacturing method thereof. The MOS device is formed in a substrate with an upper surface and it includes: an isolation region, a well region, a gate, a lightly-doped-source (LDS), a lightly-doped-drain (LDD), a source, and a drain. The isolation region defines an operation region. The gate includes: a dielectric layer, a stack layer, and a spacer layer, wherein the stack layer separates the operation region to a first side and a second side. The LDS with a first conductive type, is formed in the substrate beneath the upper surface, and at least part of the LDS overlaps the stack layer from a top view. The source with a second conductive type overlaps the spacer layer at the first side. The conductive types of the LDS and the source are different to mitigate the threshold voltage roll-off.
    • 本发明公开了一种金属氧化物半导体(MOS)器件及其制造方法。 MOS器件形成在具有上表面的衬底中,并且其包括:隔离区,阱区,栅极,轻掺杂源(LDS),轻掺杂漏极(LDD),源极, 和排水。 隔离区域定义一个操作区域。 栅极包括:电介质层,堆叠层和间隔层,其中堆叠层将操作区域分离成第一侧和第二侧。 具有第一导电类型的LDS形成在上表面下方的基板中,并且至少部分LDS从顶视图与堆叠层重叠。 具有第二导电类型的源在第一侧与间隔层重叠。 LDS和源的导电类型不同,以减轻阈值电压下降。