公开(公告)号：US06353260B2

公开(公告)日：2002-03-05

申请号：US09785106

申请日：2001-02-20

申请人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

发明人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

IPC分类号： H01L2348

CPC分类号： H01L21/76856 ,  H01L21/76805 ,  H01L21/76843

摘要： In forming a semiconductor device in which an electrically conductive substrate is covered with a dielectric layer by the following steps, form a trench with a trench line on top and a contact hole on the bottom in the dielectric layer with the overall trench reaching down to the substrate. Preclean the trench. Form a tantalum film over the dielectric layer including the trench walls, covering the exposed the substrate surface. Fill grain boundaries of the tantalum film with at least one of tantalum oxide and tantalum nitride forming a filled tantalum film. Form a redeposited tantalum layer above the filled tantalum film. Form a copper seed film above the redeposited tantalum film. Plate the device filling the trench with a plated bulk copper layer on the seed film. Planarize the device to expose the top surface of the dielectric layer, removing surplus portions of the filled tantalum film, the copper seed film, and the bulk copper layer. The filled tantalum film is formed by exposing the tantalum to air under STP atmospheric conditions or by exposure to a nitrous oxide (N2O) gas in a plasma at a temperature of about 400° C.

摘要翻译： 在通过以下步骤形成其中导电基板被电介质层覆盖的半导体器件中，在电介质层的顶部形成有沟槽线的沟槽和底部的接触孔，其中整个沟槽到达 基质。 清洁沟槽。 在包括沟槽壁的电介质层上形成钽膜，覆盖暴露的衬底表面。 用钽氧化物和氮化钽中的至少一种填充钽膜的晶界，形成填充的钽膜。 在填充的钽膜上方形成再沉积的钽层。 在再沉积的钽膜上方形成铜籽晶膜。 将装有填充沟槽的装置用种子膜上的电镀体铜层铺平。 平面化器件以暴露电介质层的顶表面，去除填充的钽膜，铜籽晶膜和块状铜层的剩余部分。 填充的钽膜通过在STP大气条件下暴露于空气或通过在约400℃的温度下暴露于等离子体中的一氧化二氮（N 2 O）气体而形成。

公开(公告)号：US06342448B1

公开(公告)日：2002-01-29

申请号：US09583401

申请日：2000-05-31

申请人： Jing-Cheng Lin ,  Shau-Lin Shue ,  Chen-Hua Yu

发明人： Jing-Cheng Lin ,  Shau-Lin Shue ,  Chen-Hua Yu

IPC分类号： H01L2144

CPC分类号： H01L21/76846 ,  H01L21/28568 ,  H01L21/76807 ,  H01L21/76873

摘要： A method for forming an improved TaN copper barrier for a copper damascene process is described which has improved adhesion to low-k dielectric layers and also improves the wetting of a copper seed layer deposited over it thereby improving the structure of the copper seed layer which is critical to achieving uniform, high quality electrochemical copper deposition. The copper barrier is a composite structure having an lower thin Ta rich TaN portion which mixes into and reacts with the surface of the low-k dielectric layer, forming a strongly bonded transition layer between the low-k material and the remaining portion of the barrier layer. The presence of the transition layer causes compressive film stress rather than tensile stress as found in the conventional TaN barrier. As a result, the barrier layer does not delaminate from the low-k layer during subsequent processing. A second thick central portion of the barrier layer is formed of stoichiometric TaN which benefits subsequent CMP of the copper damascene structure. An upper thin Ta portion improves barrier wetting to the copper seed layer. The three sections of the laminar barrier are sequentially deposited in a single pumpdown operation by IMP sputtering from a Ta target.

摘要翻译： 描述了一种用于形成用于铜镶嵌工艺的改进的TaN铜阻挡层的方法，其具有改善的对低k电介质层的粘附性，并且还改善了沉积在其上的铜籽晶层的润湿，从而改善了铜籽晶层的结构， 对于实现均匀，高质量的电化学铜沉积至关重要。 铜屏障是具有较低的Ta Ta薄部分的复合结构，其混合并与低k电介质层的表面反应，在低k材料与阻挡层的剩余部分之间形成牢固结合的过渡层 层。 过渡层的存在导致压缩膜应力而不是常规TaN阻挡层中的拉伸应力。 结果，在随后的处理期间，阻挡层不会从低k层分层。 阻挡层的第二厚中心部分由化学计量的TaN形成，这有利于铜镶嵌结构的后续CMP。 上部薄的Ta部分改善了对铜种子层的屏障润湿。 层状阻挡层的三个部分通过来自Ta靶的IMP溅射在单次抽运操作中依次沉积。

公开(公告)号：US06277745B1

公开(公告)日：2001-08-21

申请号：US09221965

申请日：1998-12-28

申请人： Chung-Shi Liu ,  Shau-Lin Shue ,  Syun-Ming Jang ,  Chen-Hua Yu

发明人： Chung-Shi Liu ,  Shau-Lin Shue ,  Syun-Ming Jang ,  Chen-Hua Yu

IPC分类号： H01L2144

CPC分类号： H01L21/02071 ,  H01L21/321 ,  H01L21/32136 ,  H01L21/76841 ,  H01L21/7685 ,  H01L21/76852 ,  H01L21/76885

摘要： The present invention relates to a new structure and method for the passivation of copper electrical interconnects for the semiconductor industry. More particularly, the invention details a convenient method for completing the passivation of copper lines after they have been patterned by a dry etch process. The method includes the formation of a sandwich structure consisting of a bottom barrier layer, a copper layer and a top barrier layer. After the sandwich structure is patterned with a dry etch, for example, the resultant exposed copper sidewalls are then passivated by means of a barrier metal spacer process. The fully encapsulated copper lines are highly resistant to oxidation, which is an, otherwise, inherent problem associated with the lack of self passivation/exhibited by bare copper films.

摘要翻译： 本发明涉及用于半导体工业的铜电互连钝化的新结构和方法。 更具体地，本发明详细描述了在通过干蚀刻工艺对其进行图案化之后完成铜线钝化的方便方法。 该方法包括形成由底部阻挡层，铜层和顶部阻挡层组成的夹层结构。 在用干蚀刻图案化夹层结构之后，然后通过阻挡金属间隔物工艺钝化所得到的暴露的铜侧壁。 完全封装的铜线具有很高的抗氧化性，这是另一种与裸铜膜缺乏自钝化/显示相关的固有问题。

公开(公告)号：US06177347B1

公开(公告)日：2001-01-23

申请号：US09346527

申请日：1999-07-02

申请人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

发明人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

IPC分类号： H01L2144

CPC分类号： H01L21/76814 ,  H01L21/76808 ,  H01L21/76843

摘要： A new method of in-situ cleaning in a copper metallization process is described. A copper line is provided overlying a first insulating layer on a semiconductor substrate. A silicon nitride layer is deposited overlying the copper line. A second insulating layer is deposited overlying the silicon nitride layer. A via is opened through the second insulating layer to the silicon nitride layer wherein a polymer forms on the sidewalls of the via. The silicon nitride layer within the via is removed wherein the copper line underlying the silicon nitride layer is exposed within the via and whereby the exposed copper line is oxidized forming a copper oxide layer within the via. The via is cleaned within a deposition chamber wherein the cleaning comprises the following steps: first sputtering Argon into the via to remove the polymer, second pumping down the deposition chamber, and third flowing H2 and He gases into the via to reduce the copper oxide layer to copper. Thereafter, a barrier metal layer is deposited onto the third insulating layer and within the via using the same deposition chamber and maintaining vacuum. A copper layer is formed within the via overlying the barrier metal layer to complete the copper metallization in the fabrication of an integrated circuit device.

摘要翻译： 描述了一种在铜金属化过程中原位清洗的新方法。 铜线设置在半导体衬底上的第一绝缘层上。 沉积在铜线上的氮化硅层。 沉积在氮化硅层上的第二绝缘层。 将通孔穿过第二绝缘层打开到氮化硅层，其中在通孔的侧壁上形成聚合物。 去除通孔内的氮化硅层，其中氮化硅层下面的铜线在通孔内暴露，由此暴露的铜线被氧化，形成通孔内的氧化铜层。 在沉积室中清洁通孔，其中清洁包括以下步骤：首先将氩气溅射到通孔中以除去聚合物，第二次将沉积室泵送，并且将第三流动的H 2和He气体进入通孔以减少氧化铜层 到铜。 此后，使用相同的沉积室将阻挡金属层沉积到第三绝缘层和通孔内，并保持真空。 在覆盖阻挡金属层的通孔中形成铜层，以在集成电路器件的制造中完成铜金属化。

公开(公告)号：US08466059B2

公开(公告)日：2013-06-18

申请号：US12750100

申请日：2010-03-30

申请人： Hung-Pin Chang ,  Chien-Ming Chiu ,  Tsang-Jiuh Wu ,  Shau-Lin Shue ,  Chen-Hua Yu

发明人： Hung-Pin Chang ,  Chien-Ming Chiu ,  Tsang-Jiuh Wu ,  Shau-Lin Shue ,  Chen-Hua Yu

IPC分类号： H01L21/44 ,  H01L21/4763

CPC分类号： H01L21/76898 ,  H01L21/6835 ,  H01L23/525 ,  H01L24/13 ,  H01L24/14 ,  H01L2221/68359 ,  H01L2224/13022 ,  H01L2224/13109 ,  H01L2224/13111 ,  H01L2224/13116 ,  H01L2224/13139 ,  H01L2224/13144 ,  H01L2224/13147 ,  H01L2224/13155 ,  H01L2224/13184 ,  H01L2224/14181 ,  H01L2924/01019 ,  H01L2924/01327 ,  H01L2924/12042 ,  H01L2924/14 ,  H01L2924/00014 ,  H01L2924/00

摘要： A multi-layer interconnect structure for stacked die configurations is provided. Through-substrate vias are formed in a semiconductor substrate. A backside of the semiconductor substrate is thinned to expose the through-substrate vias. An isolation film is formed over the backside of the semiconductor substrate and the exposed portion of the through-substrate vias. A first conductive element is formed electrically coupled to respective ones of the through-substrate vias and extending over the isolation film. One or more additional layers of isolation films and conductive elements may be formed, with connection elements such as solder balls being electrically coupled to the uppermost conductive elements.

摘要翻译： 提供了用于堆叠管芯配置的多层互连结构。 在半导体衬底中形成贯通衬底通孔。 将半导体衬底的背面变薄以暴露通过衬底的通孔。 在半导体衬底的背面和贯通衬底通孔的暴露部分之后形成隔离膜。 第一导电元件被形成为电耦合到贯穿衬底通孔中的相应通孔并且在隔离膜上延伸。 可以形成一个或多个附加层的隔离膜和导电元件，其中诸如焊球的连接元件电耦合到最上面的导电元件。

公开(公告)号：US07193327B2

公开(公告)日：2007-03-20

申请号：US11042396

申请日：2005-01-25

申请人： Chen-Hua Yu ,  Shing-Chyang Pan ,  Shau-Lin Shue ,  Ching-Hua Hsieh ,  Cheng-Lin Huang ,  Hsien-Ming Lee ,  Jing-Cheng Lin

发明人： Chen-Hua Yu ,  Shing-Chyang Pan ,  Shau-Lin Shue ,  Ching-Hua Hsieh ,  Cheng-Lin Huang ,  Hsien-Ming Lee ,  Jing-Cheng Lin

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

CPC分类号： H01L23/53295 ,  H01L21/76805 ,  H01L21/76844 ,  H01L23/53238 ,  H01L23/5329 ,  H01L2924/0002 ,  H01L2924/00

摘要： An opening in a dielectric layer having a unique barrier layer structure is provided. In an embodiment, the opening is a via and a trench. The barrier layer, which may comprise one or more barrier layers, is formed such that the ratio of the thickness of the barrier layers along a sidewall approximately midway between the bottom of the trench and the top of the dielectric layer to the thickness of the barrier layers along the bottom of the trench is greater than about 0.55. In another embodiment, the ratio of the thickness of the barrier layers along a sidewall approximately midway between the bottom of the trench and the top of the dielectric layer to the thickness of the barrier layers along the bottom of the via is greater than about 1.0. An underlying conductive layer may be recessed.

摘要翻译： 提供具有独特的阻挡层结构的电介质层中的开口。 在一个实施例中，开口是通孔和沟槽。 可以形成阻挡层，其可以包括一个或多个阻挡层，使得阻挡层的厚度在沟槽的底部和电介质层的顶部之间的大致中间的侧壁与屏障的厚度之比 沿着沟槽底部的层大于约0.55。 在另一个实施例中，沿着沟槽底部和电介质层的顶部之间大约中间的侧壁的阻挡层的厚度与通孔底部的阻挡层的厚度之比大于约1.0。 潜在的导电层可以凹入。

公开(公告)号：US20060163746A1

公开(公告)日：2006-07-27

申请号：US11042396

申请日：2005-01-25

申请人： Chen-Hua Yu ,  Shing-Chyang Pan ,  Shau-Lin Shue ,  Ching-Hua Hsieh ,  Cheng-Lin Huang ,  Hsien-Ming Lee ,  Jing-Cheng Lin

发明人： Chen-Hua Yu ,  Shing-Chyang Pan ,  Shau-Lin Shue ,  Ching-Hua Hsieh ,  Cheng-Lin Huang ,  Hsien-Ming Lee ,  Jing-Cheng Lin

IPC分类号： H01L23/48

CPC分类号： H01L23/53295 ,  H01L21/76805 ,  H01L21/76844 ,  H01L23/53238 ,  H01L23/5329 ,  H01L2924/0002 ,  H01L2924/00

摘要： An opening in a dielectric layer having a unique barrier layer structure is provided. In an embodiment, the opening is a via and a trench. The barrier layer, which may comprise one or more barrier layers, is formed such that the ratio of the thickness of the barrier layers along a sidewall approximately midway between the bottom of the trench and the top of the dielectric layer to the thickness of the barrier layers along the bottom of the trench is greater than about 0.55. In another embodiment, the ratio of the thickness of the barrier layers along a sidewall approximately midway between the bottom of the trench and the top of the dielectric layer to the thickness of the barrier layers along the bottom of the via is greater than about 1.0. An underlying conductive layer may be recessed.

摘要翻译： 提供具有独特的阻挡层结构的电介质层中的开口。 在一个实施例中，开口是通孔和沟槽。 可以形成阻挡层，其可以包括一个或多个阻挡层，使得阻挡层的厚度在沟槽的底部和电介质层的顶部之间的大致中间的侧壁与屏障的厚度之比 沿着沟槽底部的层大于约0.55。 在另一个实施例中，沿着沟槽底部和电介质层的顶部之间大约中间的侧壁的阻挡层的厚度与通孔底部的阻挡层的厚度之比大于约1.0。 潜在的导电层可以凹入。

公开(公告)号：US06413863B1

公开(公告)日：2002-07-02

申请号：US09489971

申请日：2000-01-24

申请人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

发明人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

IPC分类号： H01L2144

CPC分类号： H01L23/53219 ,  H01L21/32135 ,  H01L21/32136 ,  H01L24/11 ,  H01L2224/13099 ,  H01L2224/45124 ,  H01L2224/45144 ,  H01L2924/00014 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01015 ,  H01L2924/01018 ,  H01L2924/01022 ,  H01L2924/01029 ,  H01L2924/01033 ,  H01L2924/01074 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/04941 ,  H01L2924/14 ,  Y10S438/926 ,  H01L2924/00 ,  H01L2224/48

摘要： In accordance with the objectives of the invention a new method is provided to create aluminum pads that overlay an electrical contact point. A layer of passivation is deposited over the surface that contains one or more electrical contact points, the layer of passivation is patterned thereby creating openings in the layer of passivation that overlay and align with one or more of the contact points. Under the first embodiment of the invention, a layer of AlCu is deposited over the patterned layer of passivation thereby including the openings that have been created in the layer of passivation. The deposited layer of AlCu is patterned and etched thereby creating the required AlCu bond pad. In addition to creating the required AlCu bond pad, the etch of the layer of AlCu also creates a pattern of dummy AlCu pads that are not in contact with any underlying points of electrical contact but that are located on the surface of the layer of passivation. The dummy AlCu pads counteract the above indicated effect of theta phase propagation that occurs during the AlCu etching resulting in a passivation layer that has a smooth surface and that therefore provides a good underlying layer for the created AlCu pads. Under the second embodiment of the invention, a layer of pure aluminum is sputter deposited over the passivation layer including the openings that has been created in the passivation layer. The deposited layer of aluminum is patterned and etched thereby creating the required aluminum pad.

摘要翻译： 根据本发明的目的，提供了一种新的方法来产生覆盖电接触点的铝焊盘。 在包含一个或多个电接触点的表面上沉积一层钝化物，图案化钝化层，从而在钝化层中形成覆盖并与一个或多个接触点对齐的开口。 在本发明的第一实施例中，AlCu层沉积在图案化的钝化层上，从而包括在钝化层中产生的开口。 AlCu的沉积层被图案化和蚀刻，从而形成所需的AlCu焊盘。 除了创建所需的AlCu接合焊盘之外，AlCu层的蚀刻还产生不与任何潜在的电接触点接触但位于钝化层表面上的虚拟AlCu焊盘的图案。 虚拟AlCu焊盘抵消了在AlCu蚀刻期间发生的θ相传播的上述影响，导致具有平滑表面的钝化层，因此为所创建的AlCu焊盘提供了良好的底层。 在本发明的第二实施例中，纯钝化层溅射沉积在钝化层上，包括在钝化层中形成的开口。 将沉积的铝层图案化并蚀刻，从而形成所需的铝垫。

公开(公告)号：US06211075B1

公开(公告)日：2001-04-03

申请号：US09244881

申请日：1999-02-05

申请人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu ,  Hung-Ju Chien

发明人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu ,  Hung-Ju Chien

IPC分类号： H01L2144

CPC分类号： H01L21/76856 ,  H01L21/76841 ,  H01L21/76886 ,  Y10S438/937

摘要： A method for increasing electromigration resistance within the metal stack layer of Wolfram plugs by applying air exposure or plasma treatment to the top surface of the first layer of metal within the metal stack layer that is formed on top of metal plugs. The remainder of the process of the formation of the metal stack layer is not affected by the present invention.

摘要翻译： 通过在形成于金属插塞顶部的金属堆叠层内的第一金属层的顶表面上施加空气曝光或等离子体处理来提高Wolfram插件的金属堆叠层内的电迁移阻力的方法。 形成金属堆叠层的其余过程不受本发明的影响。

公开(公告)号：US6080657A

公开(公告)日：2000-06-27

申请号：US356008

申请日：1999-07-16

申请人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

发明人： Chung-Shi Liu ,  Shau-Lin Shue ,  Chen-Hua Yu

IPC分类号： H01L21/768 ,  H01L21/28

CPC分类号： H01L21/76856 ,  H01L21/76838 ,  H01L21/76841

摘要： A method of aluminum metallization in the manufacture of an integrated circuit device is described. An insulating layer is provided over the surface of a semiconductor substrate wherein a metal plug fills an opening through the insulating layer to the semiconductor substrate. A titanium layer is deposited over the surface of the insulating layer and the metal plug using ionized metal plasma. A titanium nitride is deposited layer overlying the titanium layer. Vacuum is broken and the titanium nitride layer is exposed to the ambient air whereby a titanium oxynitride layer forms on the surface of titanium nitride layer. An aluminum layer is sputter deposited over the titanium oxynitride layer at a high temperature of greater than about 400 .degree. C. and low power of less than or equal to 4 kilowatts. The aluminum layer will be deposited in a (111)-orientation. The metal stack is patterned to form a metal line. Hillocks and metal voids are prevented by the process of the invention.

摘要翻译： 描述了在制造集成电路器件中的铝金属化方法。 绝缘层设置在半导体衬底的表面上，其中金属插塞将通过绝缘层的开口填充到半导体衬底。 使用电离金属等离子体在绝缘层和金属插塞的表面上沉积钛层。 氮化钛层叠在钛层上。 真空断裂，氮化钛层暴露于环境空气中，由此在氮化钛层的表面上形成氮氧化钛层。 在大于约400℃的高温和低于4千瓦的低功率下，在氮氧化钛层上溅射沉积铝层。 铝层将以（111）取向沉积。 图案化金属叠层以形成金属线。 通过本发明的方法防止了小丘和金属空隙。