Methods of forming field effect transistors having t-shaped gate electrodes using carbon-based etching masks
    5.
    发明授权
    Methods of forming field effect transistors having t-shaped gate electrodes using carbon-based etching masks 有权
    使用碳基蚀刻掩模形成具有t形栅电极的场效应晶体管的方法

    公开(公告)号:US07479445B2

    公开(公告)日:2009-01-20

    申请号:US11247937

    申请日:2005-10-11

    IPC分类号: H01L21/28 H01L21/335

    摘要: Methods of forming field effect transistors include forming a first electrically insulating layer comprising mostly carbon on a surface of a semiconductor substrate and patterning the first electrically insulating layer to define an opening therein. A trench is formed in the substrate by etching the surface of the substrate using the patterned first electrically insulating layer as an etching mask. The trench is filled with a gate electrode. The first electrically insulating layer is patterned in an ambient containing oxygen. This oxygen-containing ambient supports further oxidation of trench-based isolation regions within the substrate when they are exposed by openings within the first electrically insulating layer.

    摘要翻译: 形成场效应晶体管的方法包括在半导体衬底的表面上形成主要包含碳的第一电绝缘层,并且图案化第一电绝缘层以在其中限定开口。 通过使用图案化的第一电绝缘层作为蚀刻掩模蚀刻衬底的表面,在衬底中形成沟槽。 沟槽填充有栅电极。 第一电绝缘层在含有氧的环境中被图案化。 当这种含氧环境通过第一电绝缘层内的开口露出时,支撑衬底内基于沟槽的隔离区的进一步氧化。

    METHOD OF FABRICATING SEMICONDUCTOR DEVICE HAVING CAPACITOR
    9.
    发明申请
    METHOD OF FABRICATING SEMICONDUCTOR DEVICE HAVING CAPACITOR 有权
    制造具有电容器的半导体器件的方法

    公开(公告)号:US20080087931A1

    公开(公告)日:2008-04-17

    申请号:US11869400

    申请日:2007-10-09

    摘要: Methods are provided for fabricating semiconductor devices having capacitors, which prevent lower electrodes of the capacitors from breaking or collapsing and which provide increased capacitance of the capacitors. For instance, a method includes forming a first insulating layer on a semiconductor substrate, forming a first hole in the first insulating layer, forming a contact plug in the first hole, forming a second insulating layer having a landing pad, wherein the landing pad contacts an upper surface of the contact plug, forming an etch stop layer on the landing pad and the second insulating layer, forming a third insulating layer on the etch stop layer, forming a third hole through the third insulating layer and etch stop layer to expose the landing pad, selectively etching the exposed landing pad, forming a lower electrode on the selectively etched landing pad, and then forming a capacitor by forming a dielectric layer and an upper electrode on the lower electrode.

    摘要翻译: 提供了用于制造具有电容器的半导体器件的方法,其阻止电容器的下部电极断开或塌缩并且提供电容器的增加的电容。 例如,一种方法包括在半导体衬底上形成第一绝缘层,在第一绝缘层中形成第一孔,在第一孔中形成接触塞,形成具有着陆垫的第二绝缘层,其中, 所述接触插塞的上表面在所述着陆焊盘和所述第二绝缘层上形成蚀刻停止层,在所述蚀刻停止层上形成第三绝缘层,形成通过所述第三绝缘层的第三孔和蚀刻停止层, 选择性地蚀刻暴露的着陆焊盘,在选择性蚀刻的着陆焊盘上形成下电极,然后通过在下电极上形成电介质层和上电极来形成电容器。

    Methods of fabricating flash memory devices and flash memory devices fabricated thereby
    10.
    发明授权
    Methods of fabricating flash memory devices and flash memory devices fabricated thereby 有权
    制造闪存器件和闪存器件的方法

    公开(公告)号:US07338849B2

    公开(公告)日:2008-03-04

    申请号:US11261820

    申请日:2005-10-28

    IPC分类号: H01L21/8238 H01L29/788

    CPC分类号: H01L27/11521 H01L27/115

    摘要: Methods of fabricating a flash memory device and flash memory devices fabricated thereby are provided. One of the methods includes forming an isolation layer in a semiconductor substrate to define a plurality of parallel active regions in the semiconductor substrate. A plurality of first conductive layer patterns are formed on the active regions. The first conductive layer patterns are spaced apart from each other in a lengthwise direction of the active regions. An insulating layer is conformally formed on the semiconductor substrate and the first conductive layer patterns. A second conductive layer is formed on the insulating layer. The second conductive layer is patterned until the insulating layer is exposed to form a plurality of parallel second conductive layer patterns. The second conductive layer patterns cross the active regions and the isolation layer to overlap the first conductive layer patterns.

    摘要翻译: 提供了制造闪速存储器件的方法和由此制造的闪存器件。 一种方法包括在半导体衬底中形成隔离层以在半导体衬底中限定多个平行的有源区。 在有源区上形成多个第一导电层图案。 第一导电层图案在活性区域的长度方向上彼此间隔开。 在半导体衬底和第一导电层图案上共形形成绝缘层。 在绝缘层上形成第二导电层。 图案化第二导电层直到绝缘层暴露以形成多个平行的第二导电层图案。 第二导电层图案与有源区和隔离层交叉,以与第一导电层图案重叠。