Method for forming a recessed gate with word lines
    42.
    发明授权
    Method for forming a recessed gate with word lines 有权
    用字线形成凹槽的方法

    公开(公告)号:US07316953B2

    公开(公告)日:2008-01-08

    申请号:US11145728

    申请日:2005-06-06

    申请人: Pei-Ing Lee

    发明人: Pei-Ing Lee

    IPC分类号: H01L21/8242

    摘要: A method for forming a semiconductor device. A substrate is provided, wherein the substrate has recessed gates and deep trench capacitor devices therein. Protrusions of the recessed gates and upper portions of the deep trench capacitor devices are revealed. Spacers are formed on sidewalls of the upper portions and the protrusions. Buried portions of conductive material are formed in spaces between the spacers. The substrate, the spacers and the buried portions are patterned to form parallel shallow trenches for defining active regions. A layer of dielectric material is formed in the shallow trenches, wherein some of the buried portions serve as buried bit line contacts. Word lines are formed across the recessed gates, wherein at least one of the word lines comprises portions overlapping the recessed gates. At least one of the overlapped portions has a narrower width than at least one of the recessed gates.

    摘要翻译: 一种形成半导体器件的方法。 提供了一种衬底,其中衬底在其中具有凹入栅极和深沟槽电容器器件。 显露了深沟槽电容器器件的凹入栅极和上部的突出。 间隔件形成在上部和突起的侧壁上。 导电材料的埋入部分形成在间隔件之间的空间中。 将衬底,间隔物和掩埋部分图案化以形成用于限定有源区域的平行的浅沟槽。 在浅沟槽中形成介电材料层,其中一些掩埋部分用作掩埋位线接触。 字线形成在凹入的栅极之间,其中至少一个字线包括与凹入栅极重叠的部分。 重叠部分中的至少一个具有比凹入栅极中的至少一个更窄的宽度。

    Method for forming a memory device with a recessed gate
    43.
    发明授权
    Method for forming a memory device with a recessed gate 有权
    用于形成具有凹入栅极的存储器件的方法

    公开(公告)号:US07316952B2

    公开(公告)日:2008-01-08

    申请号:US11141656

    申请日:2005-05-31

    申请人: Pei-Ing Lee

    发明人: Pei-Ing Lee

    IPC分类号: H01L21/8242

    摘要: A method for forming a semiconductor device. A substrate, having a plurality of deep trench capacitors therein, is provided wherein upper portions of the deep trench capacitor devices are revealed. Spacers on sidewalls of the upper portions of the deep trench capacitors are formed to form a predetermined region surrounded by the deep trench capacitor devices. The predetermined region of the substrate is etched using the spacers and the upper portions of the deep trench capacitors serve as a mask to form a recess, and a recessed gate is formed in the recess.

    摘要翻译: 一种形成半导体器件的方法。 提供了其中具有多个深沟槽电容器的衬底,其中露出了深沟槽电容器器件的上部。 形成深沟槽电容器的上部侧壁上的间隔,以形成由深沟槽电容器器件包围的预定区域。 使用间隔物蚀刻衬底的预定区域,并且深沟槽电容器的上部用作掩模以形成凹部,并且在凹部中形成凹入栅极。

    Semiconductor device having a trench gate and method of fabricating the same
    44.
    发明申请
    Semiconductor device having a trench gate and method of fabricating the same 有权
    具有沟槽栅的半导体器件及其制造方法

    公开(公告)号:US20070138545A1

    公开(公告)日:2007-06-21

    申请号:US11491704

    申请日:2006-07-24

    IPC分类号: H01L29/94 H01L21/336

    摘要: 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.

    摘要翻译: 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。

    Split gate flash memory cell
    45.
    发明授权
    Split gate flash memory cell 有权
    分闸门闪存单元

    公开(公告)号:US07005698B2

    公开(公告)日:2006-02-28

    申请号:US10668902

    申请日:2003-09-23

    IPC分类号: H01L29/788

    摘要: 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.

    摘要翻译: 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。