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    • 42. 发明申请
    • Semiconductor device having a trench gate and method of fabricating the same
    • 具有沟槽栅的半导体器件及其制造方法
    • US20070138545A1
    • 2007-06-21
    • US11491704
    • 2006-07-24
    • Jeng-Ping LinPei-Ing Lee
    • Jeng-Ping LinPei-Ing Lee
    • H01L29/94H01L21/336
    • H01L29/7834H01L27/10876H01L29/42368H01L29/66621
    • A method of fabricating a semiconductor device having a trench gate is provided. First, a semiconductor substrate having a trench etch mask thereon is provided. The semiconductor substrate is etched to form a first trench having a first depth using the trench etch mask as a shield. Impurities are doped into the semiconductor substrate through the first trench to form a doped region. The doped region and the semiconductor substrate underlying the first trench are etched to form a second trench having a second depth greater than the first depth, wherein the second trench has a sidewall and a bottom. A gate insulating layer is formed on the sidewall and the bottom of the second trench. A trench gate is formed in the second trench.
    • 提供一种制造具有沟槽栅极的半导体器件的方法。 首先,提供其上具有沟槽蚀刻掩模的半导体衬底。 蚀刻半导体衬底以形成具有第一深度的第一沟槽,使用沟槽蚀刻掩模作为屏蔽。 杂质通过第一沟槽掺杂到半导体衬底中以形成掺杂区域。 蚀刻第一沟槽下面的掺杂区域和半导体衬底以形成具有大于第一深度的第二深度的第二沟槽,其中第二沟槽具有侧壁和底部。 栅极绝缘层形成在第二沟槽的侧壁和底部上。 沟槽栅极形成在第二沟槽中。
    • 45. 发明授权
    • Split gate flash memory cell
    • 分闸门闪存单元
    • US07005698B2
    • 2006-02-28
    • US10668902
    • 2003-09-23
    • Chi-Hui LinJeng-Ping LinPei-Ing LeeJih-Chang Lien
    • Chi-Hui LinJeng-Ping LinPei-Ing LeeJih-Chang Lien
    • H01L29/788
    • H01L27/115H01L27/11553H01L29/42324H01L29/7885
    • A split gate flash memory cell. The memory cell includes a substrate, a conductive line, source/drain regions, an insulating layer, a conductive spacer, an insulating stud, a first conductive layer, and a first insulating spacer. The conductive line is disposed in a lower portion of the trench of the substrate. The source region is formed in the substrate adjacent to an upper portion of the conductive line having the insulating layer thereon. The conductive spacer is disposed on the upper sidewall of the trench serving as a floating gate. The insulating stud is disposed on the insulating layer. The first conductive layer is disposed over the substrate adjacent to the conductive spacer serving as a control gate. The first insulating spacer is disposed on the sidewall of the insulating stud to cover the first conductive layer. The drain region is formed in the substrate adjacent to the first conductive layer.
    • 分闸门闪存单元。 存储单元包括基板,导线,源极/漏极区,绝缘层,导电间隔物,绝缘柱,第一导电层和第一绝缘间隔物。 导线设置在衬底的沟槽的下部。 源极区域形成在与其上具有绝缘层的导电线的上部相邻的衬底中。 导电间隔物设置在用作浮动栅极的沟槽的上侧壁上。 绝缘支柱设置在绝缘层上。 第一导电层设置在与用作控制栅极的导电间隔物相邻的衬底上。 第一绝缘间隔件设置在绝缘螺柱的侧壁上以覆盖第一导电层。 漏极区域形成在与第一导电层相邻的衬底中。