公开(公告)号：US07312149B2

公开(公告)日：2007-12-25

申请号：US10840095

申请日：2004-05-06

申请人： Chao-Lung Chen ,  Kei-Wei Chen ,  Shih-Ho Lin ,  Ying-Lang Wang ,  Yu-Ku Lin ,  Ching-Hwanq Su ,  Po-Jen Shih ,  Shang-Chin Sung

发明人： Chao-Lung Chen ,  Kei-Wei Chen ,  Shih-Ho Lin ,  Ying-Lang Wang ,  Yu-Ku Lin ,  Ching-Hwanq Su ,  Po-Jen Shih ,  Shang-Chin Sung

IPC分类号： H01L21/44

CPC分类号： C25D7/123 ,  C25D3/02 ,  C25D5/10 ,  C25D5/18 ,  H01L21/2885

摘要： A method of electroplating a metal layer on a semiconductor device includes a sequence of biasing operations that includes a first electroplating step at a first current density followed by a second immersion step at a second current density being less than the first current density, and subsequent electroplating steps of increasing current densities beginning with a third electroplating step having a third current density that is greater than the first current density. The second, low current density immersion step improves the quality of the plating process and produces a plated film that completely fills openings such as vias and trenches and avoids hollow vias and pull-back on the bottom corners of via and trench openings. The low current density second immersion step produces an electrochemical deposition process that provides low contact resistance and therefore reduces device failure.

摘要翻译： 在半导体器件上电镀金属层的方法包括一系列偏置操作，其包括第一电流密度的第一电镀步骤，随后是第二电流密度小于第一电流密度的第二浸入步骤，随后的电镀 从具有大于第一电流密度的第三电流密度的第三电镀步骤开始增加电流密度的步骤。 第二，低电流密度浸没步骤提高了电镀工艺的质量，并且产生完全填充诸如通孔和沟槽等开口的电镀膜，并避免了通孔和沟槽开口的底角上的中空通孔和拉回。 低电流密度第二浸入步骤产生电化学沉积工艺，其提供低接触电阻并因此减少器件故障。

公开(公告)号：US20050250327A1

公开(公告)日：2005-11-10

申请号：US10840095

申请日：2004-05-06

申请人： Chao-Lung Chen ,  Kei-Wei Chen ,  Shih-Ho Lin ,  Ying-Lang Wang ,  Yu-Ku Lin ,  Ching-Hwanq Su ,  Po-Jen Shih ,  Shang-Chin Sung

发明人： Chao-Lung Chen ,  Kei-Wei Chen ,  Shih-Ho Lin ,  Ying-Lang Wang ,  Yu-Ku Lin ,  Ching-Hwanq Su ,  Po-Jen Shih ,  Shang-Chin Sung

IPC分类号： C25D3/02 ,  C25D5/10 ,  C25D5/18 ,  C25D7/12 ,  H01L21/288 ,  H01L21/44

CPC分类号： C25D7/123 ,  C25D3/02 ,  C25D5/10 ,  C25D5/18 ,  H01L21/2885

摘要： A method of electroplating a metal layer on a semiconductor device includes a sequence of biasing operations that includes a first electroplating step at a first current density followed by a second immersion step at a second current density being less than the first current density, and subsequent electroplating steps of increasing current densities beginning with a third electroplating step having a third current density that is greater than the first current density. The second, low current density immersion step improves the quality of the plating process and produces a plated film that completely fills openings such as vias and trenches and avoids hollow vias and pull-back on the bottom corners of via and trench openings. The low current density second immersion step produces an electrochemical deposition process that provides low contact resistance and therefore reduces device failure.

摘要翻译： 在半导体器件上电镀金属层的方法包括一系列偏置操作，其包括第一电流密度的第一电镀步骤，随后是第二电流密度小于第一电流密度的第二浸入步骤，随后的电镀 从具有大于第一电流密度的第三电流密度的第三电镀步骤开始增加电流密度的步骤。 第二，低电流密度浸没步骤提高了电镀工艺的质量，并且产生完全填充诸如通孔和沟槽等开口的电镀膜，并避免了通孔和沟槽开口的底角上的中空通孔和拉回。 低电流密度第二浸入步骤产生电化学沉积工艺，其提供低接触电阻并因此减少器件故障。