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    Vertical DRAM device with self-aligned upper trench shaping
    12.
    发明授权
    Vertical DRAM device with self-aligned upper trench shaping 失效
    具有自对准上沟槽成形的垂直DRAM器件

    公开(公告)号：US07247536B2

    公开(公告)日：2007-07-24

    申请号：US11085663

    申请日：2005-03-21

    申请人： Kangguo Cheng ,  Ramachandra Divakaruni ,  Chun-Yung Sung

    发明人： Kangguo Cheng ,  Ramachandra Divakaruni ,  Chun-Yung Sung

    IPC分类号： H01L21/8242

    CPC分类号： H01L27/10876 ,  H01L27/0207 ,  H01L27/10864 ,  H01L27/1087 ,  H01L29/945

    摘要： A method and structure for a memory storage cell in a semiconductor substrate includes forming a dopant source material over a lower portion of a deep trench formed in the substrate. An upper portion of the trench is shaped to a generally rectangular configuration, and the dopant source material is annealed so as to form a buried plate of a trench capacitor. The buried plate is self aligned to the shaped upper portion of the trench.

    摘要翻译： 半导体衬底中的存储单元的方法和结构包括在衬底中形成的深沟槽的下部形成掺杂剂源材料。 沟槽的上部被成形为大致矩形的构造，并且掺杂剂源材料被退火以形成沟槽电容器的掩埋板。 掩埋板与沟槽的成形上部自对准。

    Hybrid orientation semiconductor structure with reduced boundary defects and method of forming same
    14.
    发明授权
    Hybrid orientation semiconductor structure with reduced boundary defects and method of forming same 有权
    具有减少边界缺陷的混合取向半导体结构及其形成方法

    公开(公告)号：US08236636B2

    公开(公告)日：2012-08-07

    申请号：US12972771

    申请日：2010-12-20

    申请人： Haizhou Yin ,  John A. Ott ,  Katherine L. Saenger ,  Chun-Yung Sung

    发明人： Haizhou Yin ,  John A. Ott ,  Katherine L. Saenger ,  Chun-Yung Sung

    IPC分类号： H01L21/336

    CPC分类号： H01L21/02694 ,  H01L21/02532 ,  H01L21/76264 ,  Y10S438/973

    摘要： The present invention provides an improved amorphization/templated recrystallization (ATR) method for forming hybrid orientation substrates and semiconductor device structures. A direct-silicon-bonded (DSB) silicon layer having a (011) surface crystal orientation is bonded to a base silicon substrate having a (001) surface crystal orientation to form a DSB wafer in which the in-plane direction of the (011) DSB layer is aligned with an in-plane direction of the (001) base substrate. Selected regions of the DSB layer are amorphized down to the base substrate to form amorphized regions aligned with the mutually orthogonal in-plane directions of the (001) base substrate, followed by recrystallization using the base substrate as a template. This optimal arrangement of DSB layer, base substrate, and amorphized region orientation provides a near-vertical, essentially defect-free boundary between original-orientation and changed-orientation silicon regions, thus enabling complete boundary region removal with smaller footprint shallow trench isolation than possible with ATR methods not so optimized.

    摘要翻译： 本发明提供用于形成混合取向基板和半导体器件结构的改进的非晶化/模板重结晶（ATR）方法。 具有（011）表面晶体取向的直接硅键合（DSB）硅层被结合到具有（001）表面晶体取向的基底硅基板上，以形成其中面内<110>方向的DSB晶片 （011）DSB层与（001）基底的面内<110>方向对准。 DSB层的选定区域被非晶化到底部基板以形成与（001）基底基板的相互正交的平面内100°方向对准的非晶形区域，然后使用基底基板作为模板进行重结晶。 DSB层，基底和非晶区域取向的这种最佳布置提供了原始取向和改变取向硅区域之间近似垂直的，基本上无缺陷的边界，因此可以实现完整的边界区域移除，并且可以实现更小的占地面积的浅沟槽隔离 ATR方法没有如此优化。

    AMORPHIZATION/TEMPLATED RECRYSTALLIZATION METHOD FOR HYBRID ORIENTATION SUBSTRATES
    16.
    发明申请
    AMORPHIZATION/TEMPLATED RECRYSTALLIZATION METHOD FOR HYBRID ORIENTATION SUBSTRATES 有权
    用于混合定向衬底的拟合/调制再结晶方法

    公开(公告)号：US20100203708A1

    公开(公告)日：2010-08-12

    申请号：US12767261

    申请日：2010-04-26

    申请人： Keith Edward Fogel ,  Katherine L. Saenger ,  Chun-Yung Sung ,  Haizhou Yin

    发明人： Keith Edward Fogel ,  Katherine L. Saenger ,  Chun-Yung Sung ,  Haizhou Yin

    IPC分类号： H01L21/26 ,  H01L21/322

    CPC分类号： H01L21/02675 ,  H01L21/02532 ,  H01L21/2022 ,  H01L21/76224 ,  H01L21/823807

    摘要： The present invention provides an improved amorphization/templated recrystallization (ATR) method for fabricating low-defect-density hybrid orientation substrates. ATR methods for hybrid orientation substrate fabrication generally start with a Si layer having a first orientation bonded to a second Si layer or substrate having a second orientation. Selected regions of the first Si layer are amorphized and then recrystallized into the orientation of the second Si layer by using the second Si layer as a template. The process flow of the present invention solves two major difficulties not disclosed by prior art ATR methods: the creation of “corner defects” at the edges of amorphized Si regions bounded by trenches, and undesired orientation changes during a high temperature post-recrystallization defect-removal annealing of non-ATR'd regions not bounded by trenches. In particular, this invention provides a process flow comprising the steps of (i) amorphization and low-temperature recrystallization performed in substrate regions free of trenches, (ii) formation of trench isolation regions that subsume the defective regions at the edge of the ATR'd regions, and (iii) a high-temperature defect-removal anneal performed with the trench isolation regions in place.

    摘要翻译： 本发明提供了用于制造低缺陷密度混合取向基材的改进的非晶化/模板重结晶（ATR）方法。 用于混合取向衬底制造的ATR方法通常从具有第一取向键合到具有第二取向的第二Si层或衬底的Si层开始。 第一Si层的选定区域是非晶化的，然后通过使用第二Si层作为模板将其再结晶成第二Si层的取向。 本发明的工艺流程解决了现有技术ATR方法未公开的两个主要困难：在由沟槽界定的非晶化Si区域的边缘产生“角缺陷”，以及在高温后再结晶缺陷 - 未被沟槽限定的非ATR区域的去除退火。 特别地，本发明提供了一种工艺流程，其包括以下步骤：（i）在没有沟槽的衬底区域中进行非晶化和低温重结晶，（ii）形成在ATR'边缘处的缺陷区域的沟槽隔离区域的形成， d区域，以及（iii）在沟槽隔离区域中进行的高温缺陷去除退火。

    Amorphization/templated recrystallization method for hybrid orientation substrates
    17.
    发明授权
    Amorphization/templated recrystallization method for hybrid orientation substrates 失效
    混合取向基板的非晶化/模板重结晶方法

    公开(公告)号：US07704852B2

    公开(公告)日：2010-04-27

    申请号：US11871694

    申请日：2007-10-12

    申请人： Keith E. Fogel ,  Katherine L. Saenger ,  Chun-Yung Sung ,  Haizhou Yin

    发明人： Keith E. Fogel ,  Katherine L. Saenger ,  Chun-Yung Sung ,  Haizhou Yin

    IPC分类号： H01L21/76

    CPC分类号： H01L21/02675 ,  H01L21/02532 ,  H01L21/2022 ,  H01L21/76224 ,  H01L21/823807

    摘要： The present invention provides an improved amorphization/templated recrystallization (ATR) method for fabricating low-defect-density hybrid orientation substrates. ATR methods for hybrid orientation substrate fabrication generally start with a Si layer having a first orientation bonded to a second Si layer or substrate having a second orientation. Selected regions of the first Si layer are amorphized and then recrystallized into the orientation of the second Si layer by using the second Si layer as a template. The process flow of the present invention solves two major difficulties not disclosed by prior art ATR methods: the creation of “corner defects” at the edges of amorphized Si regions bounded by trenches, and undesired orientation changes during a high temperature post-recrystallization defect-removal annealing of non-ATR'd regions not bounded by trenches. In particular, this invention provides a process flow comprising the steps of (i) amorphization and low-temperature recrystallization performed in substrate regions free of trenches, (ii) formation of trench isolation regions that subsume the defective regions at the edge of the ATR'd regions, and (iii) a high-temperature defect-removal anneal performed with the trench isolation regions in place.

    摘要翻译： 本发明提供了用于制造低缺陷密度混合取向基材的改进的非晶化/模板重结晶（ATR）方法。 用于混合取向衬底制造的ATR方法通常从具有第一取向键合到具有第二取向的第二Si层或衬底的Si层开始。 第一Si层的选定区域是非晶化的，然后通过使用第二Si层作为模板将其再结晶成第二Si层的取向。 本发明的工艺流程解决了现有技术ATR方法未公开的两个主要困难：在由沟槽界定的非晶化Si区域的边缘产生“角缺陷”，以及在高温后再结晶缺陷 - 未被沟槽限定的非ATR区域的去除退火。 特别地，本发明提供了一种工艺流程，其包括以下步骤：（i）在没有沟槽的衬底区域中进行非晶化和低温重结晶，（ii）形成在ATR'边缘处的缺陷区域的沟槽隔离区域的形成， d区域，以及（iii）在沟槽隔离区域中进行的高温缺陷去除退火。

    Laser processing method for trench-edge-defect-free solid phase epitaxy in confined geometrics
    18.
    发明授权
    Laser processing method for trench-edge-defect-free solid phase epitaxy in confined geometrics 失效
    激光加工方法用于封闭几何中的无边缘无缺陷固相外延

    公开(公告)号：US07691733B2

    公开(公告)日：2010-04-06

    申请号：US12062749

    申请日：2008-04-04

    申请人： Keith E. Fogel ,  Kam-Leung Lee ,  Katherine L. Saenger ,  Chun-Yung Sung ,  Haizhou Yin

    发明人： Keith E. Fogel ,  Kam-Leung Lee ,  Katherine L. Saenger ,  Chun-Yung Sung ,  Haizhou Yin

    IPC分类号： H01L21/20

    CPC分类号： H01L21/02675 ,  H01L21/02532 ,  H01L21/2022 ,  H01L21/76224 ,  H01L21/823807

    摘要： The present invention provides an improved amorphization/templated recrystallization (ATR) method for fabricating low-defect-density hybrid orientation substrates. ATR methods for hybrid orientation substrate fabrication generally start with a Si layer having a first orientation bonded to a second Si layer or substrate having a second orientation. Selected regions of the first Si layer are amorphized and then recrystallized into the orientation of the second Si layer by using the second Si layer as a template. In particular, this invention provides a melt-recrystallization ATR method, for use alone or in combination with non-melt-recrystallization ATR methods, in which selected Si regions bounded by dielectric-filled trenches are induced to undergo an orientation change by the steps of preamorphization, laser-induced melting, and corner-defect-free templated recrystallization from the melt.

    摘要翻译： 本发明提供了用于制造低缺陷密度混合取向基材的改进的非晶化/模板重结晶（ATR）方法。 用于混合取向衬底制造的ATR方法通常从具有第一取向键合到具有第二取向的第二Si层或衬底的Si层开始。 第一Si层的选定区域是非晶化的，然后通过使用第二Si层作为模板将其再结晶成第二Si层的取向。 特别地，本发明提供熔融重结晶ATR方法，其单独使用或与非熔融再结晶ATR方法组合使用，其中通过介电填充沟槽界定的选定的Si区域被诱导通过以下步骤进行取向改变： 熔融前体变形，激光熔化和无角点缺陷的模板重结晶。