公开(公告)号：US08080479B2

公开(公告)日：2011-12-20

申请号：US11733858

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302

CPC classification number: C23C16/45574 ,  C23C16/5096 ,  H01J37/32091 ,  H01J37/32165 ,  H01J37/32174 ,  H01L21/67069 ,  H01L21/6831

Abstract: A method of processing a workpiece in a plasma reactor chamber includes coupling RF power via an electrode to plasma in the chamber, the RF power being of a variable frequency in a frequency range that includes a fundamental frequency f. The method also includes coupling the electrode to a resonator having a resonant VHF frequency F which is a harmonic of the fundamental frequency f, so as to produce VHF power at the harmonic. The method controls the ratio of power near the fundamental f to power at harmonic F, by controlling the proportion of power from the generator that is up-converted from f to F, so as to control plasma ion density distribution.

Abstract translation: 在等离子体反应器室中处理工件的方法包括经由电极将RF功率耦合到腔室中的等离子体，RF功率在包括基频f的频率范围内是可变频率的。 该方法还包括将电极耦合到具有作为基频f的谐波的谐振VHF频率F的谐振器，以便在谐波处产生VHF功率。 该方法通过控制从f向F转换为F的发电机的功率比例来控制基波f附近的功率与谐波F功率的比值，以便控制等离子体离子密度分布。

公开(公告)号：US20090156012A1

公开(公告)日：2009-06-18

申请号：US11954550

申请日：2007-12-12

Applicant: CHANG-LIN HSIEH ,  BINXI GU ,  JIE YUAN ,  HUI XIONG DAI ,  ROBIN CHEUNG ,  SUBHASH DESHMUKH

Inventor： CHANG-LIN HSIEH ,  BINXI GU ,  JIE YUAN ,  HUI XIONG DAI ,  ROBIN CHEUNG ,  SUBHASH DESHMUKH

IPC: H01L21/461

CPC classification number: H01L21/76808 ,  H01L21/31116 ,  H01L21/31138 ,  H01L21/31144

Abstract: Methods for forming dual damascene structures in low-k dielectric materials that facilitate reducing photoresist poison issues are provided herein. In some embodiments, such methods may include plasma etching a via through a first mask layer into a low-k dielectric material disposed on a substrate. The first mask layer may then be removed using a process including exposing the first mask layer to a first plasma comprising an oxygen containing gas and at least one of a dilutant gas or a passivation gas, and subsequently exposing the first mask layer to a second plasma comprising an oxygen containing gas and formed using one of either plasma bias power or plasma source power. An anti-reflective coating may then be deposited into the via and atop the low-k dielectric material. A trench may then be plasma etched through a second mask layer formed atop the anti-reflective coating into the low-k dielectric material.

Abstract translation: 本文提供了在低k电介质材料中形成双重镶嵌结构的方法，其有助于减少光致抗蚀剂的毒性问题。 在一些实施例中，这样的方法可以包括将通过第一掩模层的通孔等离子体蚀刻到设置在基板上的低k电介质材料。 然后可以使用包括将第一掩模层暴露于包含含氧气体和稀释气体或钝化气体中的至少一种的第一等离子体的方法去除第一掩模层，并随后将第一掩模层暴露于第二等离子体 包括含氧气体并且使用等离子体偏置功率或等离子体源功率之一来形成。 然后可以将抗反射涂层沉积到低k电介质材料的通孔中。 然后可以通过在抗反射涂层顶部形成低k电介质材料的第二掩模层等离子体蚀刻沟槽。

公开(公告)号：US20080182418A1

公开(公告)日：2008-07-31

申请号：US11733858

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302 ,  H01L21/461

CPC classification number: C23C16/45574 ,  C23C16/5096 ,  H01J37/32091 ,  H01J37/32165 ,  H01J37/32174 ,  H01L21/67069 ,  H01L21/6831

Abstract: A method of processing a workpiece in a plasma reactor chamber includes coupling RF power via an electrode to plasma in the chamber, the RF power being of a variable frequency in a frequency range that includes a fundamental frequency f. The method also includes coupling the electrode to a resonator having a resonant VHF frequency F which is a harmonic of the fundamental frequency f, so as to produce VHF power at the harmonic. The method controls the ratio of power near the fundamental f to power at harmonic F, by controlling the proportion of power from the generator that is up-converted from f to F, so as to control plasma ion density distribution.

Abstract translation: 在等离子体反应器室中处理工件的方法包括经由电极将RF功率耦合到腔室中的等离子体，RF功率在包括基频f的频率范围内是可变频率的。 该方法还包括将电极耦合到具有作为基频f的谐波的谐振VHF频率F的谐振器，以便在谐波处产生VHF功率。 该方法通过控制从f向F转换为F的发电机的功率比例来控制基波f附近的功率与谐波F功率的比值，以便控制等离子体离子密度分布。

公开(公告)号：US20080182417A1

公开(公告)日：2008-07-31

申请号：US11733767

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302 ,  H01L21/461

CPC classification number: C23C16/45574 ,  C23C16/5096 ,  H01J37/32091 ,  H01J37/32165 ,  H01J37/32174 ,  H01L21/67069 ,  H01L21/6831

Abstract: In a plasma reactor chamber a ceiling electrode and a workpiece support electrode, respective RF power sources of respective VHF frequencies f1 and f2 are coupled to either respective ones of the electrodes or to a common one of the electrodes, where f1 is sufficiently high to produce a center-high non-uniform plasma ion distribution and f2 is sufficiently low to produce a center-low non-uniform plasma ion distribution. Respective center ground return paths are provided for RF current passing directly between the ceiling electrode and the workpiece support electrode for the frequencies f1 and f2, and an edge ground return path is provided for each of the frequencies f1 and f2. The impedance of at least one of the ground return paths is adjusted so as to control the uniformity of the plasma ion density distribution.

Abstract translation: 在等离子体反应器室中，天花板电极和工件支撑电极，各个VHF频率f1和f2的相应RF功率源耦合到电极中的相应电极或共同的一个电极，其中f1足够高以产生 中心高的不均匀等离子体离子分布和f2足够低以产生中心 - 低不均匀的等离子体离子分布。 提供各自的中心接地返回路径用于频率f1和f2直接通过天花板电极和工件支撑电极之间的RF电流，并为每个频率f1和f2提供边缘接地返回路径。 调整至少一个接地返回路径的阻抗，以便控制等离子体离子密度分布的均匀性。

公开(公告)号：US07968469B2

公开(公告)日：2011-06-28

申请号：US11733984

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302

CPC classification number: H01J37/32174 ,  H01J37/32091 ,  H01J37/32165

Abstract: A method for processing a workpiece in a plasma reactor chamber includes coupling RF power at a first VHF frequency f1 to a plasma via one of the electrodes of the chamber, and providing a center ground return path for RF current passing directly between the ceiling electrode and the workpiece support electrode for the frequency f1. The method further includes providing a variable height edge ground annular element and providing a ground return path through the edge ground annular element for the frequency f1. The method controls the uniformity of plasma ion density distribution by controlling the distance between the variable height edge ground annular element and one of: (a) height of ceiling electrode or (b) height of workpiece support electrode.

Abstract translation: 用于在等离子体反应器室中处理工件的方法包括通过室的电极之一将RFF功率在第一VHF频率f1耦合到等离子体，并且提供用于RF电流的中心接地返回路径，其直接通过天花板电极和 工件支撑电极为频率f1。 该方法还包括提供可变高度边缘的地面环形元件，并为频率f1提供通过边缘接地环形元件的接地返回路径。 该方法通过控制可变高度边缘接地环形元件之间的距离和（a）天花板电极的高度或（b）工件支撑电极的高度来控制等离子体离子密度分布的均匀性。

公开(公告)号：US07884025B2

公开(公告)日：2011-02-08

申请号：US11733767

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302

CPC classification number: C23C16/45574 ,  C23C16/5096 ,  H01J37/32091 ,  H01J37/32165 ,  H01J37/32174 ,  H01L21/67069 ,  H01L21/6831

Abstract: In a plasma reactor chamber a ceiling electrode and a workpiece support electrode, respective RF power sources of respective VHF frequencies f1 and f2 are coupled to either respective ones of the electrodes or to a common one of the electrodes, where f1 is sufficiently high to produce a center-high non-uniform plasma ion distribution and f2 is sufficiently low to produce a center-low non-uniform plasma ion distribution. Respective center ground return paths are provided for RF current passing directly between the ceiling electrode and the workpiece support electrode for the frequencies f1 and f2, and an edge ground return path is provided for each of the frequencies f1 and f2. The impedance of at least one of the ground return paths is adjusted so as to control the uniformity of the plasma ion density distribution.

Abstract translation: 在等离子体反应器室中，天花板电极和工件支撑电极，各个VHF频率f1和f2的相应RF功率源耦合到电极中的相应电极或共同的一个电极，其中f1足够高以产生 中心高的不均匀等离子体离子分布和f2足够低以产生中心 - 低不均匀的等离子体离子分布。 提供各自的中心接地返回路径用于频率f1和f2直接通过天花板电极和工件支撑电极之间的RF电流，并为每个频率f1和f2提供边缘接地返回路径。 调整至少一个接地返回路径的阻抗，以便控制等离子体离子密度分布的均匀性。

公开(公告)号：US07879731B2

公开(公告)日：2011-02-01

申请号：US11733764

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302

CPC classification number: H01J37/32174 ,  H01J37/32091 ,  H01J37/32165

Abstract: A method is provided for processing a workpiece in a plasma reactor chamber having electrodes including at least a ceiling electrode and a workpiece support electrode. The method includes coupling respective RF power sources of respective VHF frequencies f1 and f2 to either (a) respective ones of the electrodes or (b) a common one of the electrodes, where f1 is sufficiently high to produce a center-high non-uniform plasma ion distribution and f2 is sufficiently low to produce a center-low non-uniform plasma ion distribution. The method further includes adjusting a ratio of an RF parameter at the f1 frequency to the RF parameter at the f2 frequency so as to control plasma ion density distribution, the RF parameter being any one of RF power, RF voltage or RF current.

Abstract translation: 提供了一种用于处理具有至少包括天花板电极和工件支撑电极的电极的等离子体反应器室中的工件的方法。 该方法包括将相应的VHF频率f1和f2的相应RF功率源耦合到（a）电极中的相应电极或（b）共同的一个电极，其中f1足够高以产生中心高的不均匀 等离子体离子分布和f2足够低以产生中心 - 低不均匀的等离子体离子分布。 该方法还包括调整f1频率处的RF参数与f2频率处的RF参数的比率，以便控制等离子体离子密度分布，RF参数是RF功率，RF电压或RF电流中的任何一个。

公开(公告)号：US20080180028A1

公开(公告)日：2008-07-31

申请号：US11733770

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01J7/00

CPC classification number: C23C16/45574 ,  C23C16/5096 ,  H01J37/32091 ,  H01J37/32165 ,  H01J37/32174 ,  H01L21/67069 ,  H01L21/6831

Abstract: A method is provided for processing a workpiece in a plasma reactor chamber. The method includes coupling, to a plasma in the chamber, power of an RF frequency via a ceiling electrode and coupling, to the plasma, power of at least approximately the same RF frequency via a workpiece support electrode. The method also includes providing an edge ground return path. The method further includes adjusting the proportion between (a) current flow between said electrodes and (b) current flow to the edge ground return path from said electrodes, to control plasma ion density distribution uniformity over the workpiece.

Abstract translation: 提供了一种用于在等离子体反应器室中处理工件的方法。 该方法包括通过天线电极将等离子体耦合到腔室中的等离子体，并通过工件支撑电极将等离子体的功率耦合到至少近似相同的RF频率。 该方法还包括提供边缘接地返回路径。 该方法还包括调节（a）所述电极之间的电流之间的比例和（b）从所述电极到达边缘接地返回路径的电流，以控制工件上的等离子体离子密度分布均匀性。

公开(公告)号：US07846846B2

公开(公告)日：2010-12-07

申请号：US11861032

申请日：2007-09-25

Applicant: Kallol Bera ,  Kenny L. Doan ,  Stephan Wege ,  Subhash Deshmukh

Inventor： Kallol Bera ,  Kenny L. Doan ,  Stephan Wege ,  Subhash Deshmukh

IPC: H01L21/302

CPC classification number: H01L21/31116 ,  H01J37/32091 ,  H01J37/32137 ,  H01J37/32449 ,  H01L21/76802

Abstract: High aspect ratio contact openings are etched while preventing bowing or bending of the etch profile by forming a highly conductive thin film on the side wall of each contact opening. The conductivity of the thin film on the side wall is enhanced by ion bombardment carried out periodically during the etch process.

Abstract translation: 通过在每个接触开口的侧壁上形成高导电性薄膜来蚀刻高纵横比接触开口，同时防止蚀刻轮廓弯曲或弯曲。 通过在蚀刻工艺期间周期性地进行的离子轰击，增强了侧壁上薄膜的导电性。

公开(公告)号：US20080182416A1

公开(公告)日：2008-07-31

申请号：US11733764

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302 ,  H01L21/461

CPC classification number: H01J37/32174 ,  H01J37/32091 ,  H01J37/32165

Abstract: A method is provided for processing a workpiece in a plasma reactor chamber having electrodes including at least a ceiling electrode and a workpiece support electrode. The method includes coupling respective RF power sources of respective VHF frequencies f1 and f2 to either (a) respective ones of the electrodes or (b) a common one of the electrodes, where f1 is sufficiently high to produce a center-high non-uniform plasma ion distribution and f2 is sufficiently low to produce a center-low non-uniform plasma ion distribution. The method further includes adjusting a ratio of an RF parameter at the f1 frequency to the RF parameter at the f2 frequency so as to control plasma ion density distribution, the RF parameter being any one of RF power, RF voltage or RF current.

Abstract translation: 提供了一种用于处理具有至少包括天花板电极和工件支撑电极的电极的等离子体反应器室中的工件的方法。 该方法包括将各个VHF频率f 1和f 2的相应RF功率源耦合到（a）电极中的相应电极或（b）电极中的公共电极，其中f 1足够高以产生中心高 不均匀的等离子体离子分布和f 2足够低以产生中心 - 低不均匀等离子体离子分布。 该方法还包括调整f 1频率处的RF参数与f 2频率处的RF参数的比率，以便控制等离子体离子密度分布，RF参数是RF功率，RF电压或RF电流中的任何一个。