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    • 1. 发明申请
    • METHOD FOR FORMING TRENCH MOS STRUCTURE
    • 形成铁素体结构的方法
    • US20150064893A1
    • 2015-03-05
    • US14534192
    • 2014-11-06
    • NANYA TECHNOLOGY CORP.
    • Chin-Te KuoYi-Nan ChenHsien-Wen Liu
    • H01L29/66
    • H01L29/7813H01L21/3083H01L29/4236H01L29/66666H01L29/66734H01L29/7827
    • A method for forming a trench MOS structure. First, a substrate, an epitaxial layer, a doping region and a doping well are provided. The substrate has a first conductivity type, a first side and a second side opposite to the first side. The epitaxial layer has the first conductivity type and is disposed on the first side. The doping well has a second conductivity type and is disposed on the epitaxial layer. The doping region has the first conductivity type and is disposed on the doping well. A gate trench penetrates the doping region and the doping well. The doping well is partially removed to form a bottom section of the gate trench. A gate isolation is formed to cover the inner wall of the bottom section and a top section of the gate trench. The gate trench is filled with a conductive material to form a trench gate.
    • 一种形成沟槽MOS结构的方法。 首先,提供衬底,外延层,掺杂区和掺杂阱。 衬底具有第一导电类型,第一侧和与第一侧相对的第二侧。 外延层具有第一导电类型并且设置在第一侧。 掺杂阱具有第二导电类型并且设置在外延层上。 掺杂区域具有第一导电类型并且被布置在掺杂阱上。 栅极沟槽穿透掺杂区域和掺杂阱。 部分去除掺杂阱以形成栅极沟槽的底部。 形成栅极隔离以覆盖底部的内壁和栅极沟槽的顶部。 栅极沟槽填充有导电材料以形成沟槽栅极。
    • 10. 发明授权
    • Method for forming trench MOS structure
    • 沟槽MOS结构的形成方法
    • US09093471B2
    • 2015-07-28
    • US14534192
    • 2014-11-06
    • NANYA TECHNOLOGY CORP.
    • Chin-Te KuoYi-Nan ChenHsien-Wen Liu
    • H01L29/66H01L29/423H01L29/78H01L21/308
    • H01L29/7813H01L21/3083H01L29/4236H01L29/66666H01L29/66734H01L29/7827
    • A method for forming a trench MOS structure. First, a substrate, an epitaxial layer, a doping region and a doping well are provided. The substrate has a first conductivity type, a first side and a second side opposite to the first side. The epitaxial layer has the first conductivity type and is disposed on the first side. The doping well has a second conductivity type and is disposed on the epitaxial layer. The doping region has the first conductivity type and is disposed on the doping well. A gate trench penetrates the doping region and the doping well. The doping well is partially removed to form a bottom section of the gate trench. A gate isolation is formed to cover the inner wall of the bottom section and a top section of the gate trench. The gate trench is filled with a conductive material to form a trench gate.
    • 一种形成沟槽MOS结构的方法。 首先,提供衬底,外延层,掺杂区和掺杂阱。 衬底具有第一导电类型,第一侧和与第一侧相对的第二侧。 外延层具有第一导电类型并且设置在第一侧。 掺杂阱具有第二导电类型并且设置在外延层上。 掺杂区域具有第一导电类型并且被布置在掺杂阱上。 栅极沟槽穿透掺杂区域和掺杂阱。 部分去除掺杂阱以形成栅极沟槽的底部。 形成栅极隔离以覆盖底部的内壁和栅极沟槽的顶部。 栅极沟槽填充有导电材料以形成沟槽栅极。