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    • 5. 发明申请
    • Method for isolation layer for a vertical DRAM
    • 垂直DRAM隔离层方法
    • US20050064643A1
    • 2005-03-24
    • US10943699
    • 2004-09-17
    • Cheng-Chih HuangSheng-Wei YangChen-Chou HuangSheng-Tsung Chen
    • Cheng-Chih HuangSheng-Wei YangChen-Chou HuangSheng-Tsung Chen
    • H01L21/8238H01L21/8242
    • H01L27/10864H01L27/10867H01L27/10876
    • A method for forming isolation layer in a vertical DRAM. A semiconductor substrate with a plurality of first trenches is provided, with a collar dielectric layer is formed on a sidewall of each, and each filled with a first conducting layer. A patterned mask layer is formed on the semiconductor substrate, and the semiconductor substrate is etched using the patterned mask layer as an etching mask to form a plurality of second trenches. The patterned mask layer is removed. Each second trench is filled with an insulating layer acting as an isolation. Each of first conducting layers is etched to form a plurality of grooves. A doped area acting as a buried strap is formed in the semiconductor substrate beside each groove. A trench top insulating layer is formed in the bottom surface of each trench. Each first trench is filled with a second conducting layer acting as a gate.
    • 一种用于在垂直DRAM中形成隔离层的方法。 提供了具有多个第一沟槽的半导体衬底,其中,在每个的侧壁上形成一个环形电介质层,并且各自填充有第一导电层。 在半导体衬底上形成图案化掩模层,并使用图案化掩模层作为蚀刻掩模蚀刻半导体衬底,以形成多个第二沟槽。 去除图案化的掩模层。 每个第二沟槽填充有用作隔离层的绝缘层。 每个第一导电层被蚀刻以形成多个凹槽。 在每个沟槽旁边的半导体衬底中形成用作掩埋带的掺杂区域。 沟槽顶部绝缘层形成在每个沟槽的底表面中。 每个第一沟槽填充有用作栅极的第二导电层。
    • 9. 发明申请
    • MEMORY DEVICE WITH VERTICAL TRANSISTOR AND FABRICATION METHOD THEREOF
    • 具有垂直晶体管的存储器件及其制造方法
    • US20080067569A1
    • 2008-03-20
    • US11751572
    • 2007-05-21
    • Sheng-Tsung ChenShiah-Jyh LinChung-Yuan Lee
    • Sheng-Tsung ChenShiah-Jyh LinChung-Yuan Lee
    • H01L27/108H01L21/8242
    • H01L27/10841H01L27/10864H01L27/10867
    • A method for fabricating a vertical transistor. At least one deep trench is formed in a silicon substrate. A conductive structure and a trench top insulator are successively formed in the deep trench, in which the conductive structure comprises a first doping region and the trench top insulator is below the surface of the silicon substrate. An epitaxial silicon layer is formed on the surface of the silicon substrate. Ion implantation is performed in the epitaxial silicon layer to form a second doping region therein. A gate structure is formed on the trench top insulator, protruding from the surface of the epitaxial silicon layer and adjacent to the sidewalls of the epitaxial silicon layer and the deep trench. A capping layer is formed on the epitaxial silicon layer. The invention also discloses a memory device with a vertical transistor and a method for fabricating the same.
    • 一种垂直晶体管的制造方法。 在硅衬底中形成至少一个深沟槽。 在深沟槽中连续地形成导电结构和沟槽顶部绝缘体,其中导电结构包括第一掺杂区域,并且沟槽顶部绝缘体位于硅衬底的表面下方。 在硅衬底的表面上形成外延硅层。 在外延硅层中进行离子注入,以在其中形成第二掺杂区。 栅极结构形成在沟槽顶部绝缘体上,从外延硅层的表面突出并且邻近外延硅层和深沟槽的侧壁。 在外延硅层上形成覆盖层。 本发明还公开了一种具有垂直晶体管的存储器件及其制造方法。
    • 10. 发明授权
    • Method for isolation layer for a vertical DRAM
    • 垂直DRAM隔离层方法
    • US07074700B2
    • 2006-07-11
    • US10943699
    • 2004-09-17
    • Cheng-Chih HuangSheng-Wei YangChen-Chou HuangSheng-Tsung Chen
    • Cheng-Chih HuangSheng-Wei YangChen-Chou HuangSheng-Tsung Chen
    • H01L21/22
    • H01L27/10864H01L27/10867H01L27/10876
    • A method for forming isolation layer in a vertical DRAM. A semiconductor substrate with a plurality of first trenches is provided, with a collar dielectric layer is formed on a sidewall of each, and each filled with a first conducting layer. A patterned mask layer is formed on the semiconductor substrate, and the semiconductor substrate is etched using the patterned mask layer as an etching mask to form a plurality of second trenches. The patterned mask layer is removed. Each second trench is filled with an insulating layer acting as an isolation. Each of first conducting layers is etched to form a plurality of grooves. A doped area acting as a buried strap is formed in the semiconductor substrate beside each groove. A trench top insulating layer is formed in the bottom surface of each trench. Each first trench is filled with a second conducting layer acting as a gate.
    • 一种用于在垂直DRAM中形成隔离层的方法。 提供了具有多个第一沟槽的半导体衬底,其中,在每个的侧壁上形成一个环形电介质层,并且各自填充有第一导电层。 在半导体衬底上形成图案化掩模层,并使用图案化掩模层作为蚀刻掩模蚀刻半导体衬底,以形成多个第二沟槽。 去除图案化的掩模层。 每个第二沟槽填充有用作隔离层的绝缘层。 每个第一导电层被蚀刻以形成多个凹槽。 在每个沟槽旁边的半导体衬底中形成用作掩埋带的掺杂区域。 沟槽顶部绝缘层形成在每个沟槽的底表面中。 每个第一沟槽填充有用作栅极的第二导电层。