Sidewall image transfer processes for forming multiple line-widths
    1.
    发明授权
    Sidewall image transfer processes for forming multiple line-widths 失效
    用于形成多个线宽的侧壁图像传输过程

    公开(公告)号:US07699996B2

    公开(公告)日:2010-04-20

    申请号:US11680204

    申请日:2007-02-28

    IPC分类号: H01B13/00

    摘要: A method for simultaneously forming multiple line-widths, one of which is less than that achievable employing conventional lithographic techniques. The method includes providing a structure which includes a memory layer and a sidewall image transfer (SIT) layer on top of the memory layer. Then, the SIT layer is patterned resulting in a SIT region. Then, the SIT region is used as a blocking mask during directional etching of the memory layer resulting in a first memory region. Then, a side wall of the SIT region is retreated a retreating distance D in a reference direction resulting in a SIT portion. Said patterning comprises a lithographic process. The retreating distance D is less than a critical dimension CD associated with the lithographic process. The SIT region includes a first dimension W2 and a second dimension W3 in the reference direction, wherein CD

    摘要翻译: 同时形成多个线宽的方法,其中之一小于使用常规光刻技术可实现的线宽。 该方法包括提供在存储层顶部包括存储层和侧壁图像传输(SIT)层的结构。 然后,对SIT层进行图案化,形成SIT区域。 然后,在存储层的定向蚀刻期间,将SIT区域用作阻挡掩模,产生第一存储区域。 然后,SIT区域的侧壁在参考方向上退回退避距离D,导致SIT部分。 所述图案化包括光刻工艺。 退回距离D小于与光刻工艺相关联的关键尺寸CD。 SIT区域包括参考方向上的第一维度W2和第二维度W3,其中CD

    Well isolation trenches (WIT) for CMOS devices
    2.
    发明授权
    Well isolation trenches (WIT) for CMOS devices 失效
    用于CMOS器件的隔离沟槽(WIT)

    公开(公告)号:US07737504B2

    公开(公告)日:2010-06-15

    申请号:US11759981

    申请日:2007-06-08

    IPC分类号: H01L29/772

    摘要: A well isolation trenches for a CMOS device and the method for forming the same. The CMOS device includes (a) a semiconductor substrate, (b) a P well and an N well in the semiconductor substrate, (c) a well isolation region sandwiched between and in direct physical contact with the P well and the N well. The P well comprises a first shallow trench isolation (STI) region, and the N well comprises a second STI region. A bottom surface of the well isolation region is at a lower level than bottom surfaces of the first and second STI regions. When going from top to bottom of the well isolation region, an area of a horizontal cross section of the well isolation region is an essentially continuous function.

    摘要翻译: CMOS器件的良好隔离沟槽及其形成方法。 CMOS器件包括(a)半导体衬底,(b)半导体衬底中的P阱和N阱,(c)夹在P阱和N阱之间并与P阱和N阱直接物理接触的阱隔离区域。 P阱包括第一浅沟槽隔离(STI)区域,并且N阱包括第二STI区域。 阱隔离区域的底表面处于比第一和第二STI区域的底表面更低的水平面。 当从隔离区域的顶部到底部进行时,阱隔离区域的水平横截面的区域是基本上连续的函数。

    LAYER PATTERNING USING DOUBLE EXPOSURE PROCESSES IN A SINGLE PHOTORESIST LAYER
    5.
    发明申请
    LAYER PATTERNING USING DOUBLE EXPOSURE PROCESSES IN A SINGLE PHOTORESIST LAYER 有权
    在单个光电层中使用双重曝光过程的层状图

    公开(公告)号:US20090035708A1

    公开(公告)日:2009-02-05

    申请号:US11831099

    申请日:2007-07-31

    IPC分类号: G03F7/20

    摘要: A structure and a method for forming the same. The method includes providing a structure which includes (a) a to-be-patterned layer, (b) a photoresist layer on top of the to-be-patterned layer wherein the photoresist layer includes a first opening, and (c) a cap region on side walls of the first opening. A first top surface of the to-be-patterned layer is exposed to a surrounding ambient through the first opening. The method further includes performing a first lithography process resulting in a second opening in the photoresist layer. The second opening is different from the first opening. A second top surface of the to-be-patterned layer is exposed to a surrounding ambient through the second opening.

    摘要翻译: 一种结构及其形成方法。 该方法包括提供一种结构,其包括(a)待图案化层,(b)在待图案化层的顶部上的光致抗蚀剂层,其中光致抗蚀剂层包括第一开口,和(c)帽 区域在第一开口的侧壁上。 待图案化层的第一顶表面通过第一开口暴露于周围环境。 该方法还包括执行在光致抗蚀剂层中产生第二开口的第一光刻工艺。 第二个开口与第一个开口不同。 待图案化层的第二顶表面通过第二开口暴露于周围环境。

    Methods for forming a wrap-around gate field effect transistor
    6.
    发明授权
    Methods for forming a wrap-around gate field effect transistor 有权
    形成环绕栅场效应晶体管的方法

    公开(公告)号:US07435653B2

    公开(公告)日:2008-10-14

    申请号:US11735075

    申请日:2007-04-13

    IPC分类号: H01L21/336

    摘要: A field effect transistor is formed having wrap-around, vertically-aligned, dual gate electrodes. Starting with a silicon-on-insulator (SOI) structure having a buried silicon island, a vertical reference edge is defined, by creating a cavity within the SOI structure, and used during two etch-back steps that can be reliably performed. The first etch-back removes a portion of an oxide layer for a first distance over which a gate conductor material is then applied. The second etch-back removes a portion of the gate conductor material for a second distance. The difference between the first and second distances defines the gate length of the eventual device. After stripping away the oxide layers, a vertical gate electrode is revealed that surrounds the buried silicon island on all four side surfaces.

    摘要翻译: 形成具有环绕,垂直排列的双栅电极的场效应晶体管。 从具有掩埋硅岛的绝缘体上硅(SOI)结构开始,通过在SOI结构内产生空腔并在可以可靠地执行的两个回蚀步骤期间使用垂直参考边缘。 第一次回蚀将氧化物层的一部分去除第一距离,然后施加栅极导体材料。 第二次回蚀将栅极导体材料的一部分移除第二距离。 第一和第二距离之间的差异定义了最终设备的栅极长度。 剥离氧化物层后,显示出在所有四个侧表面上包围掩埋硅岛的垂直栅电极。

    Wrap-around gate field effect transistor
    7.
    发明授权
    Wrap-around gate field effect transistor 有权
    环绕栅场效应晶体管

    公开(公告)号:US07271444B2

    公开(公告)日:2007-09-18

    申请号:US10732958

    申请日:2003-12-11

    IPC分类号: H01L29/76

    摘要: A field effect transistor is formed having wrap-around, vertically-aligned, dual gate electrodes. Starting with an silicon-on-insulator (SOI) structure having a buried silicon island, a vertical reference edge is defined, by creating a cavity within the SOI structure, and used during two etch-back steps that can be reliably performed. The first etch-back removes a portion of an oxide layer for a first distance over which a gate conductor material is then applied. The second etch-back removes a portion of the gate conductor material for a second distance. The difference between the first and second distances defines the gate length of the eventual device. After stripping away the oxide layers, a vertical gate electrode is revealed that surrounds the buried silicon island on all four side surfaces.

    摘要翻译: 形成具有环绕,垂直排列的双栅电极的场效应晶体管。 从具有掩埋硅岛的绝缘体上硅(SOI)结构开始,通过在SOI结构内产生空腔并在可以可靠地执行的两个回蚀步骤期间使用垂直参考边。 第一次回蚀将氧化物层的一部分去除第一距离,然后施加栅极导体材料。 第二次回蚀将栅极导体材料的一部分移除第二距离。 第一和第二距离之间的差异定义了最终设备的栅极长度。 剥离氧化物层后,显示出在所有四个侧表面上包围掩埋硅岛的垂直栅电极。

    Semiconductor transistors with contact holes close to gates
    9.
    发明授权
    Semiconductor transistors with contact holes close to gates 有权
    具有靠近门的接触孔的半导体晶体管

    公开(公告)号:US07985643B2

    公开(公告)日:2011-07-26

    申请号:US12052855

    申请日:2008-03-21

    IPC分类号: H01L21/8238

    摘要: A semiconductor structure. The structure includes (a) a semiconductor layer including a channel region disposed between first and second S/D regions; (b) a gate dielectric region on the channel region; (c) a gate region on the gate dielectric region and electrically insulated from the channel region by the gate dielectric region; (d) a protection umbrella region on the gate region, wherein the protection umbrella region comprises a first dielectric material, and wherein the gate region is completely in a shadow of the protection umbrella region; and (e) a filled contact hole (i) directly above and electrically connected to the second S/D region and (ii) aligned with an edge of the protection umbrella region, wherein the contact hole is physically isolated from the gate region by an inter-level dielectric (ILD) layer which comprises a second dielectric material different from the first dielectric material.

    摘要翻译: 半导体结构。 该结构包括(a)包括设置在第一和第二S / D区之间的沟道区的半导体层; (b)沟道区上的栅介质区; (c)栅极电介质区域上的栅极区域,并且通过栅极电介质区域与沟道区域电绝缘; (d)栅极区域上的保护伞区域,其中保护伞区域包括第一介电材料,并且其中栅极区域完全处于保护伞区域的阴影中; 和(e)直接在第二S / D区域上方并电连接到第二S / D区域的填充接触孔(i)和(ii)与保护伞区域的边缘对准,其中接触孔通过一个 层间介电层(ILD)层,其包括不同于第一介电材料的第二电介质材料。