Semiconductor device
    15.
    发明授权

    公开(公告)号:US10388735B2

    公开(公告)日:2019-08-20

    申请号:US15957428

    申请日:2018-04-19

    Inventor: Dae Hwan Chun

    Abstract: The present disclosure provides a semiconductor device including a substrate, an n− type layer, an n+ type region, a p type region, a p+ type region, a gate insulating layer, a gate electrode, a source electrode, and a drain electrode, wherein the n+ type region is disposed at a left side and a right side of the n− type layer in a plan view and configured to form in a striped pattern in a plan view, wherein the p+ type region is disposed at an outer surface of the n+ type region in a plan view and configured to form in a striped pattern in a plan view, wherein the p type region is disposed at an inner surface the n+ type region in a plan view and is separated by a predetermined interval along a longitudinal direction of the n+ type region in a plan view.

    Schottky barrier diode and method of manufacturing the same
    17.
    发明授权
    Schottky barrier diode and method of manufacturing the same 有权
    肖特基势垒二极管及其制造方法

    公开(公告)号:US09368649B2

    公开(公告)日:2016-06-14

    申请号:US14095650

    申请日:2013-12-03

    CPC classification number: H01L29/872 H01L29/1608 H01L29/66143 H01L29/8611

    Abstract: A schottky barrier diode includes an n− type epitaxial layer disposed at a first surface of an n+ type silicon carbide substrate, a plurality of n type pillar areas disposed in the n− type epitaxial layer at a first portion of a first surface of the n+ type silicon carbide substrate, a plurality of p+ areas disposed at a surface of the n− type epitaxial layer and separated from the n type pillar area, a schottky electrode disposed on the n− type epitaxial layer and the p+ area, and an ohmic electrode disposed at a second surface of the n+ type silicon carbide substrate. A doping density of the n type pillar area is larger than a doping density of the n− type epitaxial layer.

    Abstract translation: 肖特基势垒二极管包括设置在n +型碳化硅衬底的第一表面上的n型外延层,在n +型碳化硅衬底的第一表面的第一部分处设置在n型外延层中的多个n型衬底区域, 配置在n型外延层的表面并与n型支柱区分离的多个p +区域,设置在n型外延层和p +区域上的肖特基电极以及欧姆电极 设置在n +型碳化硅衬底的第二表面。 n型支柱区域的掺杂密度大于n型外延层的掺杂密度。

    Schottky barrier diode and method of manufacturing the same
    18.
    发明授权
    Schottky barrier diode and method of manufacturing the same 有权
    肖特基势垒二极管及其制造方法

    公开(公告)号:US09287415B2

    公开(公告)日:2016-03-15

    申请号:US14468987

    申请日:2014-08-26

    Abstract: A Schottky barrier diode includes: an n− type epitaxial layer disposed on a first surface of an n+ type silicon carbide substrate; a first p+ region disposed on the n− type epitaxial layer; an n type epitaxial layer disposed on the n− type epitaxial layer and the first p+ region; a second p+ region disposed on the n type epitaxial layer, and being in contact with the first p+ region; a Schottky electrode disposed on the n type epitaxial layer and the second p+ region; and an ohmic electrode disposed on a second surface of the n+ type silicon carbide substrate. Also, the first p+ region has a lattice shape including a plurality of vertical portions and horizontal portions connecting both ends of the respective vertical portions to each other.

    Abstract translation: 肖特基势垒二极管包括:n型外延层,设置在n +型碳化硅衬底的第一表面上; 布置在所述n型外延层上的第一p +区; 设置在n型外延层和第一p +区上的n型外延层; 设置在所述n型外延层上并与所述第一p +区接触的第二p +区; 设置在n型外延层和第二p +区上的肖特基电极; 以及设置在n +型碳化硅衬底的第二表面上的欧姆电极。 此外,第一p +区域具有包括将各个垂直部分的两端彼此连接的多个垂直部分和水平部分的格子形状。

    Method of manufacturing semiconductor device
    19.
    发明授权
    Method of manufacturing semiconductor device 有权
    制造半导体器件的方法

    公开(公告)号:US09171930B2

    公开(公告)日:2015-10-27

    申请号:US14143554

    申请日:2013-12-30

    Abstract: A method of manufacturing a semiconductor device may include sequentially forming an n-type epitaxial layer, a p type epitaxial layer, and an n+ region on a first surface of an n+ type silicon carbide substrate; forming a buffer layer on the n+ region; forming a photosensitive film pattern on a part of the buffer layer; etching the buffer layer using the photosensitive film pattern as a mask to form a buffer layer pattern; sequentially forming a first metal layer and a second metal layer which include a first portion and a second portion; removing one or more components to expose a part of the n+ region; and etching the exposed part of the n+ region using the first portion of the first metal layer and the first portion of the second metal layer as masks to form a trench.

    Abstract translation: 制造半导体器件的方法可以包括在n +型碳化硅衬底的第一表面上顺序形成n型外延层,p型外延层和n +区; 在n +区上形成缓冲层; 在缓冲层的一部分上形成感光膜图案; 使用感光膜图案作为掩模蚀刻缓冲层以形成缓冲层图案; 顺序地形成包括第一部分和第二部分的第一金属层和第二金属层; 去除一个或多个组件以暴露n +区域的一部分; 以及使用第一金属层的第一部分和第二金属层的第一部分作为掩模蚀刻n +区域的暴露部分以形成沟槽。

    Semiconductor device and method of manufacturing the same
    20.
    发明授权
    Semiconductor device and method of manufacturing the same 有权
    半导体装置及其制造方法

    公开(公告)号:US09123800B2

    公开(公告)日:2015-09-01

    申请号:US14317426

    申请日:2014-06-27

    Abstract: A semiconductor device includes: a first n− type epitaxial layer disposed on a first surface of an n+ type silicon carbide substrate including a current carrying region and termination regions positioned at both sides of the current carrying region; a p type epitaxial layer disposed on the first n− type epitaxial layer; a second n− type epitaxial layer disposed on the p type epitaxial layer; a first trench disposed in the current carrying region; a second trench disposed in each termination region; a gate insulating layer disposed in the first trench; a gate electrode disposed on the gate insulating layer; and a termination insulating layer disposed in the second trench, in which a side of the termination insulating layer contacts the p type epitaxial layer and the second n− type epitaxial layer.

    Abstract translation: 半导体器件包括:第一n型外延层,其设置在n +型碳化硅衬底的第一表面上,该n +型碳化硅衬底包括载流区域和位于载流区域两侧的端接区域; 设置在第一n型外延层上的p型外延层; 设置在p型外延层上的第二n型外延层; 布置在所述载流区域中的第一沟槽; 设置在每个端接区域中的第二沟槽; 设置在所述第一沟槽中的栅极绝缘层; 设置在所述栅极绝缘层上的栅电极; 以及设置在第二沟槽中的终端绝缘层,其中端接绝缘层的一侧接触p型外延层和第二n-型外延层。

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