公开(公告)号：US07205673B1

公开(公告)日：2007-04-17

申请号：US11283044

申请日：2005-11-18

申请人： Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao

发明人： Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao

IPC分类号： H01L23/48 ,  H01L23/52 ,  H01L29/40

CPC分类号： H01L23/53219 ,  H01L24/05 ,  H01L24/45 ,  H01L24/48 ,  H01L2224/02166 ,  H01L2224/04042 ,  H01L2224/05147 ,  H01L2224/05624 ,  H01L2224/45144 ,  H01L2224/48453 ,  H01L2224/48463 ,  H01L2224/48507 ,  H01L2224/48624 ,  H01L2924/01012 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/01046 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01074 ,  H01L2924/01075 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01327 ,  H01L2924/04953 ,  H01L2924/181 ,  H01L2924/351 ,  H01L2924/00014 ,  H01L2924/00

摘要： A bond pad structure which includes an aluminum bond pad which include one or more dopants that effectively control the growth of IMC to a nominal level in spite of high tensile stresses in the wafer. For example, aluminum can be doped with 1–2 atomic % of Mg. Alternatively, Pd or Si can be used, or elements like Cu or Si can be used as the dopant in order to reduce the overall tensile stresses in the wafer. This can control the abnormal growth of IMC, thus arresting the IMC crack formation. A combination of dopants can be used to both control the tensile stresses and also slightly alter the gold-Aluminum interface thus enabling a uniform and thin IMC formation. This tends to reduce or eliminate any voiding or cracking which would otherwise occur at the wire bond transfer.

摘要翻译： 一种接合焊盘结构，其包括铝接合焊盘，其包括一个或多个掺杂剂，其有效地将IMC的生长控制到标称电平，尽管晶片中存在高拉伸应力。 例如，铝可以掺杂1-2原子％的Mg。 或者，可以使用Pd或Si，或者可以使用诸如Cu或Si的元素作为掺杂剂，以便降低晶片中的整体拉伸应力。 这可以控制IMC的异常生长，从而阻止IMC裂纹形成。 可以使用掺杂剂的组合来控制拉伸应力并且还稍微改变金 - 铝界面，从而实现均匀和薄的IMC形成。 这倾向于减少或消除否则在引线键合转移时会发生的任何空隙或裂纹。

公开(公告)号：US20070102812A1

公开(公告)日：2007-05-10

申请号：US11269275

申请日：2005-11-08

申请人： Sey-Shing Sun ,  Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Hong Ying ,  Chiyi Kao ,  Peter Burke

发明人： Sey-Shing Sun ,  Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Hong Ying ,  Chiyi Kao ,  Peter Burke

IPC分类号： H01L23/48

CPC分类号： H01L24/05 ,  H01L24/45 ,  H01L24/48 ,  H01L2224/04042 ,  H01L2224/05124 ,  H01L2224/05147 ,  H01L2224/05624 ,  H01L2224/05644 ,  H01L2224/45124 ,  H01L2224/45144 ,  H01L2224/45147 ,  H01L2224/48453 ,  H01L2224/48463 ,  H01L2224/48507 ,  H01L2224/48624 ,  H01L2224/48644 ,  H01L2224/48699 ,  H01L2224/48724 ,  H01L2224/48744 ,  H01L2224/48824 ,  H01L2224/48844 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/01044 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01074 ,  H01L2924/01075 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01327 ,  H01L2924/04953 ,  H01L2924/14 ,  H01L2924/181 ,  H01L2924/351 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2924/00015

摘要： A pad structure and passivation scheme which reduces or eliminates IMC cracking in post wire bonded dies during Cu/Low-K BEOL processing. A thick 120 nm barrier layer can be provided between a 1.2 μm aluminum layer and copper. Another possibility is to effectively split up the barrier layer, where the aluminum layer is disposed between the two barrier layers. The barrier layers may be 60 nm while the aluminum layer which is disposed between the barrier layers may be 0.6 μm. Another possibility is provide an extra 0.6 μm aluminum layer on the top barrier layer. Still another possibility is to provide an extra barrier layer on the top-most aluminum layer, such that a top barrier layer of 60 nm is provided on a 0.6 μm aluminum layer, followed by another barrier layer of 60 nm, another aluminum layer of 0.6 μm and another barrier layer of 60 nm.

摘要翻译： 一种衬垫结构和钝化方案，可在Cu / Low-K BEOL处理期间减少或消除后引线键合模具中的IMC裂纹。 可以在1.2μm铝层和铜之间提供厚120nm的阻挡层。 另一种可能性是有效地分离阻挡层，其中铝层设置在两个阻挡层之间。 阻挡层可以是60nm，而设置在阻挡层之间的铝层可以是0.6μm。 另一种可能性是在顶部阻挡层上提供额外的0.6μm的铝层。 另一种可能性是在最顶层的铝层上提供额外的阻挡层，使得在0.6μm的铝层上提供60nm的顶部阻挡层，接着是60nm的另一阻挡层，另一个为0.6的铝层 妈妈和60nm的另一阻挡层。

公开(公告)号：US20070114667A1

公开(公告)日：2007-05-24

申请号：US11283219

申请日：2005-11-18

申请人： Hemanshu Bhatt ,  Dilip Vijay ,  Jayanthi Pallinti ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao

发明人： Hemanshu Bhatt ,  Dilip Vijay ,  Jayanthi Pallinti ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao

IPC分类号： H01L23/52

CPC分类号： H05K1/0271 ,  H01L24/03 ,  H01L24/05 ,  H01L24/45 ,  H01L24/48 ,  H01L2224/02166 ,  H01L2224/04042 ,  H01L2224/05009 ,  H01L2224/05073 ,  H01L2224/05553 ,  H01L2224/05556 ,  H01L2224/05558 ,  H01L2224/05624 ,  H01L2224/05647 ,  H01L2224/45144 ,  H01L2224/48453 ,  H01L2224/48463 ,  H01L2224/48507 ,  H01L2224/48624 ,  H01L2224/48647 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01074 ,  H01L2924/01075 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01327 ,  H01L2924/04953 ,  H01L2924/05042 ,  H01L2924/181 ,  H01L2924/351 ,  H05K3/107 ,  Y10T428/12396 ,  H01L2924/00014 ,  H01L2924/00

摘要： Passivation integration schemes and pad structures to reduce the stress gradients and/or improve the contact surface existing between the Al in the pad and the gold wire bond. One of the pad structures provides a plurality of recessed pad areas which are formed in a single aluminum pad. An oxide mesa can be provided under the aluminum pad. Another pad structure provides a single recessed pad area which is formed in a single aluminum pad, and the aluminum pad is disposed above a copper pad and a plurality of trench/via pads. Still another pad structure provides a single recessed pad area which is formed in a single aluminum pad, and the aluminum pad is disposed above a portion of a copper pad, such that the aluminum pad and the copper pad are staggered relative to each other.

摘要翻译： 钝化整合方案和焊盘结构以减少应力梯度和/或改善焊盘中的Al和金线键之间存在的接触表面。 垫结构之一提供了形成在单个铝垫中的多个凹陷区域。 可以在铝垫下方设置氧化物台面。 另一个垫结构提供形成在单个铝垫中的单个凹陷区域，并且铝垫设置在铜焊盘和多个沟槽/通孔焊盘之上。 另一个衬垫结构提供形成在单个铝垫中的单个凹陷区域，并且铝垫设置在铜垫的一部分上方，使得铝垫和铜垫相对于彼此交错。

公开(公告)号：US08552560B2

公开(公告)日：2013-10-08

申请号：US11283219

申请日：2005-11-18

申请人： Hemanshu Bhatt ,  Dilip Vijay ,  Jayanthi Pallinti ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao

发明人： Hemanshu Bhatt ,  Dilip Vijay ,  Jayanthi Pallinti ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao

IPC分类号： H01L21/31

CPC分类号： H05K1/0271 ,  H01L24/03 ,  H01L24/05 ,  H01L24/45 ,  H01L24/48 ,  H01L2224/02166 ,  H01L2224/04042 ,  H01L2224/05009 ,  H01L2224/05073 ,  H01L2224/05553 ,  H01L2224/05556 ,  H01L2224/05558 ,  H01L2224/05624 ,  H01L2224/05647 ,  H01L2224/45144 ,  H01L2224/48453 ,  H01L2224/48463 ,  H01L2224/48507 ,  H01L2224/48624 ,  H01L2224/48647 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01074 ,  H01L2924/01075 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01327 ,  H01L2924/04953 ,  H01L2924/05042 ,  H01L2924/181 ,  H01L2924/351 ,  H05K3/107 ,  Y10T428/12396 ,  H01L2924/00014 ,  H01L2924/00

摘要： Passivation integration schemes and pad structures to reduce the stress gradients and/or improve the contact surface existing between the Al in the pad and the gold wire bond. One of the pad structures provides a plurality of recessed pad areas which are formed in a single aluminum pad. An oxide mesa can be provided under the aluminum pad. Another pad structure provides a single recessed pad area which is formed in a single aluminum pad, and the aluminum pad is disposed above a copper pad and a plurality of trench/via pads. Still another pad structure provides a single recessed pad area which is formed in a single aluminum pad, and the aluminum pad is disposed above a portion of a copper pad, such that the aluminum pad and the copper pad are staggered relative to each other.

摘要翻译： 钝化整合方案和焊盘结构以减少应力梯度和/或改善焊盘中的Al和金线键之间存在的接触表面。 垫结构之一提供了形成在单个铝垫中的多个凹陷区域。 可以在铝垫下方设置氧化物台面。 另一个垫结构提供形成在单个铝垫中的单个凹陷区域，并且铝垫设置在铜焊盘和多个沟槽/通孔焊盘之上。 另一个衬垫结构提供形成在单个铝垫中的单个凹陷区域，并且铝垫设置在铜垫的一部分上方，使得铝垫和铜垫相对于彼此交错。

公开(公告)号：US08076779B2

公开(公告)日：2011-12-13

申请号：US11269275

申请日：2005-11-08

申请人： Sey-Shing Sun ,  Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Hong Ying ,  Chiyi Kao ,  Peter Burke

发明人： Sey-Shing Sun ,  Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Hong Ying ,  Chiyi Kao ,  Peter Burke

IPC分类号： H01L23/48 ,  H01L23/52 ,  H01L29/40

CPC分类号： H01L24/05 ,  H01L24/45 ,  H01L24/48 ,  H01L2224/04042 ,  H01L2224/05124 ,  H01L2224/05147 ,  H01L2224/05624 ,  H01L2224/05644 ,  H01L2224/45124 ,  H01L2224/45144 ,  H01L2224/45147 ,  H01L2224/48453 ,  H01L2224/48463 ,  H01L2224/48507 ,  H01L2224/48624 ,  H01L2224/48644 ,  H01L2224/48699 ,  H01L2224/48724 ,  H01L2224/48744 ,  H01L2224/48824 ,  H01L2224/48844 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/01044 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01074 ,  H01L2924/01075 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01327 ,  H01L2924/04953 ,  H01L2924/14 ,  H01L2924/181 ,  H01L2924/351 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2924/00015

摘要： A pad structure and passivation scheme which reduces or eliminates IMC cracking in post wire bonded dies during Cu/Low-k BEOL processing. A thick 120 nm barrier layer can be provided between a 1.2 μm aluminum layer and copper. Another possibility is to effectively split up the barrier layer, where the aluminum layer is disposed between the two barrier layers. The barrier layers may be 60 nm while the aluminum layer which is disposed between the barrier layers may be 0.6 μm. Another possibility is provide an extra 0.6 μm aluminum layer on the top barrier layer. Still another possibility is to provide an extra barrier layer on the top-most aluminum layer, such that a top barrier layer of 60 nm is provided on a 0.6 μm aluminum layer, followed by another harrier layer of 60 nm, another aluminum layer of 0.6 μm and another barrier layer of 60 nm.

摘要翻译： 一种衬垫结构和钝化方案，可在Cu / Low-k BEOL处理期间减少或消除后引线键合模具中的IMC裂纹。 可以在1.2μm的铝层和铜之间设置厚120nm的阻挡层。 另一种可能性是有效地分离阻挡层，其中铝层设置在两个阻挡层之间。 阻挡层可以是60nm，而设置在阻挡层之间的铝层可以是0.6μm。 另一种可能性是在顶部阻挡层上提供额外的0.6μm的铝层。 另一种可能性是在最顶层的铝层上提供额外的阻挡层，使得在0.6μm的铝层上设置60nm的顶部阻挡层，接着是60nm的另一个阻挡层，另一个为0.6的铝层 μm，另一个阻挡层为60nm。

公开(公告)号：US20070123024A1

公开(公告)日：2007-05-31

申请号：US11290087

申请日：2005-11-30

申请人： Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao ,  Peter Burke ,  Ramaswamy Ranganathan ,  Qwai Low

发明人： Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao ,  Peter Burke ,  Ramaswamy Ranganathan ,  Qwai Low

IPC分类号： H01L21/4763

CPC分类号： H01L21/76801 ,  H01L24/05 ,  H01L24/45 ,  H01L24/48 ,  H01L2224/02166 ,  H01L2224/04042 ,  H01L2224/05556 ,  H01L2224/05624 ,  H01L2224/45124 ,  H01L2224/45144 ,  H01L2224/48453 ,  H01L2224/48463 ,  H01L2224/48507 ,  H01L2224/48624 ,  H01L2224/48724 ,  H01L2924/00014 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01074 ,  H01L2924/01075 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01327 ,  H01L2924/04953 ,  H01L2924/05042 ,  H01L2924/181 ,  H01L2924/351 ,  H01L2924/00

摘要： Different ways to reduce or eliminate the IMC cracking issues in wire bonded parts, including: changing to more compressive dielectric films for top, R1, and R2; changing the top passivation film stacks to more compressive films; changing the low k film to a higher compressive film; reducing the R layer thickness and pattern density to reduce tensile stress; and minimizing anneal and dielectric deposition temperatures. Each of the methods can be used individually or in combination with each other to reduce overall tensile stresses in the Cu/low-k wafer thus reducing or eliminating the IMC cracking issue currently seen in the post wire bonded parts.

摘要翻译： 减少或消除引线接合部件中的IMC裂纹问题的不同方法，包括：改变为顶部R 1和R 2的更多的压电绝缘膜; 将顶部钝化膜堆叠更改为更多的压缩膜; 将低k膜改为较高的压缩膜; 降低R层厚度和图案密度以降低拉伸应力; 并最小化退火和介电沉积温度。 每个方法可以单独使用或彼此组合使用以减少Cu / low-k晶片中的总拉伸应力，从而减少或消除了现在在后引线接合部件中看到的IMC裂纹问题。

公开(公告)号：US07531442B2

公开(公告)日：2009-05-12

申请号：US11290087

申请日：2005-11-30

申请人： Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao ,  Peter Burke ,  Ramaswamy Ranganathan ,  Qwai Low

发明人： Jayanthi Pallinti ,  Dilip Vijay ,  Hemanshu Bhatt ,  Sey-Shing Sun ,  Hong Ying ,  Chiyi Kao ,  Peter Burke ,  Ramaswamy Ranganathan ,  Qwai Low

IPC分类号： H01L21/44

CPC分类号： H01L21/76801 ,  H01L24/05 ,  H01L24/45 ,  H01L24/48 ,  H01L2224/02166 ,  H01L2224/04042 ,  H01L2224/05556 ,  H01L2224/05624 ,  H01L2224/45124 ,  H01L2224/45144 ,  H01L2224/48453 ,  H01L2224/48463 ,  H01L2224/48507 ,  H01L2224/48624 ,  H01L2224/48724 ,  H01L2924/00014 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01074 ,  H01L2924/01075 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01327 ,  H01L2924/04953 ,  H01L2924/05042 ,  H01L2924/181 ,  H01L2924/351 ,  H01L2924/00

摘要： Different ways to reduce or eliminate the IMC cracking issues in wire bonded parts, including: changing to more compressive dielectric films for top, R1, and R2; changing the top passivation film stacks to more compressive films; changing the low k film to a higher compressive film; reducing the R layer thickness and pattern density to reduce tensile stress; and minimizing anneal and dielectric deposition temperatures. Each of the methods can be used individually or in combination with each other to reduce overall tensile stresses in the Cu/low-k wafer thus reducing or eliminating the IMC cracking issue currently seen in the post wire bonded parts.

摘要翻译： 减少或消除电线接合部件中IMC裂纹问题的不同方式，包括：更换为顶部，R1和R2的更多压电绝缘膜; 将顶部钝化膜堆叠更改为更多的压缩膜; 将低k膜改为较高的压缩膜; 降低R层厚度和图案密度以降低拉伸应力; 并最小化退火和介电沉积温度。 每个方法可以单独使用或彼此组合使用以减少Cu / low-k晶片中的总拉伸应力，从而减少或消除了现在在后引线接合部件中看到的IMC裂纹问题。

公开(公告)号：US20050224358A1

公开(公告)日：2005-10-13

申请号：US10814059

申请日：2004-03-30

申请人： Byung-Sung Kwak ,  Jayanthi Pallinti ,  Sey-Shing Sun ,  William Barth ,  Wilbur Catabay

发明人： Byung-Sung Kwak ,  Jayanthi Pallinti ,  Sey-Shing Sun ,  William Barth ,  Wilbur Catabay

IPC分类号： C25D3/02 ,  C25D5/02 ,  C25D5/18 ,  C25D7/12 ,  C25D17/00 ,  H01L21/288 ,  H01L21/321 ,  H01L21/768

CPC分类号： H01L21/7684 ,  C25D3/02 ,  C25D5/18 ,  C25D7/123 ,  C25D17/001 ,  H01L21/2885 ,  H01L21/32115 ,  H01L21/76877

摘要： A metal layer formed on a semiconductor wafer is planarized by applying sequentially a deplating step, a plating step, and a relaxation step in a removal cycle. A series of cycles are performed sequentially in one embodiment to comprise a pass. The removal cycle is repeated in sequence until the pass is completed. The respective deplating and plating rates are adjusted so that the ratios of deplating rates to plating rates progressively decrease from an initial pass to a final pass. Organic additives are added to the electrolytic plating solution to control the plating portion of the cycle in a topography dependant fashion.

摘要翻译： 通过在去除循环中依次应用脱铝步骤，电镀步骤和弛豫步骤来平坦化在半导体晶片上形成的金属层。 在一个实施例中，顺序执行一系列循环以包括通过。 删除循环按顺序重复，直到通过完成。 调整各自的脱镀和电镀速率，使得脱铝速率与电镀速率的比率从初始通过到最终通过逐渐降低。 将有机添加剂添加到电解电镀溶液中以以地形依赖的方式控制循环的电镀部分。

公开(公告)号：US20060278902A1

公开(公告)日：2006-12-14

申请号：US11270104

申请日：2005-11-09

申请人： Sey-Shing Sun ,  Hemanshu Bhatt ,  Peter Burke ,  Richard Carter

发明人： Sey-Shing Sun ,  Hemanshu Bhatt ,  Peter Burke ,  Richard Carter

IPC分类号： H01L29/76 ,  H01L21/8234

CPC分类号： G11C13/025 ,  B82Y10/00 ,  H01L51/0048 ,  H01L51/0595 ,  Y10S977/724

摘要： A microelectronic switch having a substrate layer, an electrically conductive switching layer formed on the substrate layer, an electrically conductive cavity layer formed on the switching layer, an electrically conductive cap layer formed on the cavity layer, the cap layer forming a first electrode and a second electrode that are physically and electrically separated one from another, and which both at least partially overlie the switching layer, and a cavity disposed between the switching layer and the second electrode, where the switching is layer is flexible to make electrical contact with the second electrode by flexing through the cavity upon selective application of an electrical bias.

摘要翻译： 具有衬底层的微电子开关，形成在衬底层上的导电开关层，形成在开关层上的导电腔层，形成在腔层上的导电帽层，形成第一电极的帽层和 第二电极在物理上和电气上彼此分离，并且至少部分地覆盖在开关层上，并且设置在开关层和第二电极之间的空腔，其中开关层是柔性的，以与第二电极电接触 电极通过在选择性地施加电偏压时通过空腔弯曲。

公开(公告)号：US20060281256A1

公开(公告)日：2006-12-14

申请号：US11312849

申请日：2005-12-20

申请人： Richard Carter ,  Hemanshu Bhatt ,  Shiqun Gu ,  Peter Burke ,  James Elmer ,  Sey-Shing Sun ,  Byung-Sung Kwak ,  Verne Hornback

发明人： Richard Carter ,  Hemanshu Bhatt ,  Shiqun Gu ,  Peter Burke ,  James Elmer ,  Sey-Shing Sun ,  Byung-Sung Kwak ,  Verne Hornback

IPC分类号： H01L21/336

CPC分类号： H01L51/0018 ,  B82Y10/00 ,  H01L27/283 ,  H01L51/0048 ,  H01L51/0545 ,  Y10S977/742

摘要： A method of forming a self-aligned logic cell. A nanotube layer is formed over the bottom electrode. A clamp layer is formed over the nanotube layer. The clamp layer covers the nanotube layer, thereby protecting the nanotube layer. A dielectric layer is formed over the clamp layer. The dielectric layer is etched. The clamp layer provides an etch stop and protects the nanotube layer. The clamp layer is etched with an isotropic etchant that etches the clamp layer underneath the dielectric layer, creating an overlap of the dielectric layer, and causing a self-alignment between the clamp layer and the dielectric layer. A spacer layer is formed over the nanotube layer. The spacer layer is etched except for a ring portion around the edge of the dielectric layer. The nanotube layer is etched except for portions that are underlying at least one of the clamp layer, the dielectric layer, and the spacer layer, thereby causing a self-alignment between the clamp layer, the overlap to the dielectric layer, the spacer layer, and the nanotube layer.

摘要翻译： 一种形成自对准逻辑单元的方法。 在底部电极上形成纳米管层。 在纳米管层上形成夹层。 夹层覆盖纳米管层，从而保护纳米管层。 在钳位层上形成电介质层。 蚀刻介电层。 钳位层提供蚀刻停止并保护纳米管层。 用各向同性蚀刻剂蚀刻钳夹层，蚀刻介质层下方的夹层，产生电介质层的重叠，并引起钳位层和电介质层之间的自对准。 在纳米管层上形成间隔层。 除了围绕电介质层的边缘的环形部分之外，蚀刻间隔层。 除了夹持层，电介质层和间隔层中的至少一个的部分以外，蚀刻纳米管层，从而导致夹紧层之间的自对准，与电介质层的重叠，间隔层， 和纳米管层。