公开(公告)号：US06248250B1

公开(公告)日：2001-06-19

申请号：US08897436

申请日：1997-07-21

申请人： Hiroji Hanawa ,  Gerald Zheyao Yin ,  Diana Xiaobing Ma ,  Philip M. Saizman ,  Peter K. Loewenhardt ,  Allen Zhao

发明人： Hiroji Hanawa ,  Gerald Zheyao Yin ,  Diana Xiaobing Ma ,  Philip M. Saizman ,  Peter K. Loewenhardt ,  Allen Zhao

IPC分类号： H05H146

CPC分类号： H01J37/321

摘要： The present invention adheres to an optimized coil-domed geometry including a particular dome apex height range relative to the dome base and a particular wafer position range relative to the dome apex.

摘要翻译： 本发明坚持优化的线圈圆顶几何形状，其包括相对于圆顶基座的特定圆顶顶点高度范围和相对于圆顶顶点的特定晶片位置范围。

公开(公告)号：US5777289A

公开(公告)日：1998-07-07

申请号：US597445

申请日：1996-02-02

申请人： Hiroji Hanawa ,  Gerald Zheyao Yin ,  Diana Xiaobing Ma ,  Philip M. Salzman ,  Peter K. Loewenhardt ,  Allen Zhao

发明人： Hiroji Hanawa ,  Gerald Zheyao Yin ,  Diana Xiaobing Ma ,  Philip M. Salzman ,  Peter K. Loewenhardt ,  Allen Zhao

IPC分类号： H05H1/46 ,  C23F4/00 ,  H01J37/32 ,  H01L21/205 ,  H01L21/302 ,  H01L21/3065 ,  B23K10/00

CPC分类号： H01J37/321

摘要： An inductively coupled RF plasma reactor for processing semiconductor wafer includes a reactor chamber having a side wall and a ceiling, a wafer pedestal for supporting the wafer in the chamber, an RF power source, apparatus for introducing a processing gas into the reactor chamber, and a coil inductor adjacent the reactor chamber connected to the RF power source, the coil inductor including (a) a side section facing a portion of the side wall and including a bottom winding and a top winding, the top winding being at a height corresponding at least approximately to a top height of the ceiling, and (b) a top section extending radially inwardly from the top winding of the side section so as to overlie at least a substantial portion of the ceiling. The present invention adheres to an optimized coil-dome geometry including a particular dome apex height range relative to the dome base and a particular wafer position range relative to the dome apex.

摘要翻译： 用于处理半导体晶片的感应耦合RF等离子体反应器包括具有侧壁和天花板的反应室，用于将晶片支撑在室中的晶片基座，RF电源，将处理气体引入反应室的装置，以及 与所述反应室相邻的线圈电感器，所述线圈电感器连接到所述RF电源，所述线圈电感器包括（a）面向所述侧壁的一部分并包括底部绕组和顶部绕组的侧面部分，所述顶部绕组的高度对应于 至少约至顶部的顶部高度，以及（b）从侧部的顶部绕组径向向内延伸的顶部部分，以覆盖至少大部分天花板。 本发明遵循优化的线圈 - 圆顶几何形状，其包括相对于圆顶基座的特定圆顶顶部高度范围和相对于圆顶顶点的特定晶片位置范围。

公开(公告)号：US06189484B1

公开(公告)日：2001-02-20

申请号：US09263642

申请日：1999-03-05

申请人： Gerald Zheyao Yin ,  Chii Guang Lee ,  Arnold Kholodenko ,  Peter K. Loewenhardt ,  Hongching Shan ,  Diana Xiaobing Ma ,  Dan Katz

发明人： Gerald Zheyao Yin ,  Chii Guang Lee ,  Arnold Kholodenko ,  Peter K. Loewenhardt ,  Hongching Shan ,  Diana Xiaobing Ma ,  Dan Katz

IPC分类号： C23C1600

CPC分类号： H01J37/321 ,  H01J37/32678

摘要： A helicon wave, high density RF plasma reactor having improved plasma and contaminant control. The reactor contains a well defined anode electrode that is heated above a polymer condensation temperature to ensure that deposits of material that would otherwise alter the ground plane characteristics do not form on the anode. The reactor also contains a magnetic bucket for axially confining the plasma in the chamber using a plurality of vertically oriented magnetic strips or horizontally oriented magnetic toroids that circumscribe the chamber. The reactor may utilize a temperature control system to maintain a constant temperature on the surface of the chamber.

摘要翻译： 具有改进的等离子体和污染物控制的螺旋波，高密度RF等离子体反应器。 反应器包含明确定义的阳极电极，其被加热到聚合物冷凝温度以上，以确保否则会改变接地平面特性的材料沉积物不会在阳极上形成。 反应器还包含磁性桶，用于使用多个垂直取向的磁条或围绕室的水平取向的磁环将轴向限制在室中的等离子体。 反应器可以利用温度控制系统来维持室的表面上恒定的温度。

公开(公告)号：US6020686A

公开(公告)日：2000-02-01

申请号：US908533

申请日：1997-08-07

申请人： Yan Ye ,  Hiroji Hanawa ,  Diana Xiaobing Ma ,  Gerald Zheyao Yin

发明人： Yan Ye ,  Hiroji Hanawa ,  Diana Xiaobing Ma ,  Gerald Zheyao Yin

IPC分类号： H05H1/46 ,  C23C14/24 ,  H01J37/32 ,  H01L21/203 ,  H01L21/205 ,  H01L21/302 ,  H01L21/3065 ,  H05B37/02

CPC分类号： H01J37/32091 ,  H01J37/32082 ,  H01J37/321

摘要： The invention is embodied in a plasma reactor for processing a semiconductor wafer, the reactor having a pair of parallel capacitive electrodes at the ceiling and base of the processing chamber, respectively, each of the capacitive electrodes capacitively coupling RF power into the chamber in accordance with a certain RF phase relationship between the pair of electrodes during processing of the semiconductor wafer for ease of plasma ignition and precise control of plasma ion energy and process reproducibility, and an inductive coil wound around a portion of the chamber and inductively coupling RF power into the chamber for independent control of plasma ion density. Preferably, in order to minimize the number of RF sources while providing independent power control, the invention includes power splitting to separately provide power from a common source or sources to the pair of electrodes and to the coil.

摘要翻译： 本发明体现在用于处理半导体晶片的等离子体反应器中，反应器分别在处理室的天花板和底部具有一对平行的电容电极，每个电容电极根据电容电容将RF功率电容耦合到室中 在半导体晶片的处理期间该对电极之间的某些RF相位关系易于等离子体点火并且精确控制等离子体离子能量和工艺再现性，以及感应线圈，其缠绕在腔室的一部分上并将RF功率感应耦合到 用于独立控制等离子体离子密度。 优选地，为了在提供独立的功率控制的同时最小化RF源的数量，本发明包括功率分配以从共同的源或源分别向一对电极和线圈供电。

公开(公告)号：US5710486A

公开(公告)日：1998-01-20

申请号：US436513

申请日：1995-05-08

申请人： Yan Ye ,  Hiroji Hanawa ,  Diana Xiaobing Ma ,  Gerald Zheyao Yin

发明人： Yan Ye ,  Hiroji Hanawa ,  Diana Xiaobing Ma ,  Gerald Zheyao Yin

IPC分类号： H05H1/46 ,  C23C14/24 ,  H01J37/32 ,  H01L21/203 ,  H01L21/205 ,  H01L21/302 ,  H01L21/3065 ,  H01J7/24

CPC分类号： H01J37/32091 ,  H01J37/32082 ,  H01J37/321

摘要： The invention is embodiment in a plasma reactor for processing a semiconductor wafer, the reactor having a pair of parallel capacitive electrodes at the ceiling and base of the processing chamber, respectively, each of the capacitive electrodes capacitvely coupling RF power into the chamber in accordance with a certain RF phase relationship between the pair of electrodes during processing of the semiconductor wafer for ease of plasma ignition and precise control of plasma ion energy and process reproducibility, and an inductive coil wound around a portion of the chamber and inductively coupling RF power into the chamber for independent control of plasma ion density. Preferably, in order to minimize the number of RF sources while providing independent power control, the invention includes power splitting to separately provide power from a common source or sources to the pair of electrodes and to the coil.

摘要翻译： 本发明是用于处理半导体晶片的等离子体反应器中的实施例，该反应器分别在处理室的天花板和底部具有一对平行的电容电极，每个电容电极根据电容电容将RF功率电容耦合到室中 在半导体晶片的处理期间该对电极之间的某些RF相位关系易于等离子体点火并且精确控制等离子体离子能量和工艺再现性，以及感应线圈，其缠绕在腔室的一部分上并将RF功率感应耦合到 用于独立控制等离子体离子密度。 优选地，为了在提供独立的功率控制的同时最小化RF源的数量，本发明包括功率分配以从共同的源或源分别向一对电极和线圈供电。

公开(公告)号：US5783101A

公开(公告)日：1998-07-21

申请号：US307870

申请日：1994-09-16

申请人： Diana Xiaobing Ma ,  Gerald Zheyao Yin ,  Hiroji Hanawa

发明人： Diana Xiaobing Ma ,  Gerald Zheyao Yin ,  Hiroji Hanawa

IPC分类号： H01L21/28 ,  H01J37/32 ,  H01L21/302 ,  H01L21/3065 ,  H01L21/3213 ,  H01L21/02

CPC分类号： H01J37/321 ,  H01L21/32136

摘要： The plasma source power frequency in a plasma etch reactor is reduced to a low RF frequency such as about 2 MHz. It is a discovery of this invention that at this low frequency, capacitive coupling from the plasma power source is reduced, and the plasma source power level may be increased beyond 750 Watts to reduce capacitive coupling and provide a high density inductively coupled plasma without appreciably increasing the ion bombardment energy. Moreover, under these conditions the etchant (e.g., chlorine) concentration in the plasma may be increased to about 80 percent without decreasing etch uniformity to provide a very high metal alloy etch rate with complete residue removal, no profile microloading, and no etch rate microloading, the process being applicable over a wide window of metal alloy compositions.

摘要翻译： 等离子体蚀刻反应器中的等离子体源功率频率降低到低RF频率，例如约2MHz。 本发明的发现是，在这种低频下，来自等离子体电源的电容耦合被降低，并且等离子体源功率电平可以增加到超过750瓦特以减小电容耦合并且提供高密度感应耦合等离子体而不会明显增加 离子轰击能量。 此外，在这些条件下，等离子体中的蚀刻剂（例如，氯）浓度可以增加到约80％，而不降低蚀刻均匀性，以提供非常高的金属合金蚀刻速率，完全残留物去除，无轮廓微加载，并且没有蚀刻速率的微加载 ，该方法适用于宽窗口的金属合金组合物。

公开(公告)号：US5817534A

公开(公告)日：1998-10-06

申请号：US567376

申请日：1995-12-04

申请人： Yan Ye ,  Hiroji Hanawa ,  Diana Xiaobing Ma ,  Gerald Zheyao Yin ,  Peter Loewenhardt ,  Donald Olgado ,  James Papanu ,  Steven S.Y. Mak

发明人： Yan Ye ,  Hiroji Hanawa ,  Diana Xiaobing Ma ,  Gerald Zheyao Yin ,  Peter Loewenhardt ,  Donald Olgado ,  James Papanu ,  Steven S.Y. Mak

IPC分类号： H05H1/46 ,  H01J37/32 ,  H01L21/00 ,  H01L21/302 ,  H01L21/304 ,  H01L21/3065 ,  H05H1/00

CPC分类号： H01L21/67028 ,  H01J37/32862 ,  Y10S438/905

摘要： The invention is carried out in a plasma reactor for processing a semiconductor wafer, the plasma reactor having a chamber for containing a processing gas and having a conductor connected to an RF power source for coupling RF power into the reactor chamber to generate from the processing gas a plasma inside the chamber, the chamber containing at least one surface exposed toward the plasma and susceptible to contamination by particles produced during processing of the wafer, the invention being carried out by promoting, during processing of the wafer, bombarding of particles from the plasma onto the one surface to remove therefrom contaminants deposited during processing of the wafer. Such promoting of bombarding is carried out by providing an RF power supply and coupling, during processing of the wafer, RF power from the supply to the one surface. The coupling may be performed by a capacitive cleaning electrode adjacent the one surface, the capacitive cleaning electrode connected to the RF power supply. The capacitive cleaning electrode preferably is disposed on a side of the one surface opposite the plasma so as to be protected from contact with the plasma. Alternatively, the coupling may be carried out by a direct electrical connection from the RF power supply to the one surface.

摘要翻译： 本发明在用于处理半导体晶片的等离子体反应器中进行，等离子体反应器具有用于容纳处理气体的室，并具有连接到RF电源的导体，用于将RF功率耦合到反应器室中以从处理气体产生 腔室内的等离子体，该腔室包含至少一个暴露于等离子体的表面并容易受到在晶片加工期间产生的颗粒的污染，本发明通过在晶片加工期间促进从等离子体中轰击颗粒而进行 在一个表面上去除在晶片加工期间沉积的污染物。 通过在晶片的处理期间提供RF电源和耦合来进行轰击的这种促进是从电源到单个表面的RF功率。 耦合可以通过与一个表面相邻的电容清洁电极，电容清洁电极连接到RF电源来进行。 电容式清洁电极优选地设置在与等离子体相对的一个表面的一侧，以便被保护而不与等离子体接触。 或者，耦合可以通过从RF电源到一个表面的直接电连接来执行。

公开(公告)号：US5779926A

公开(公告)日：1998-07-14

申请号：US596960

申请日：1996-02-05

申请人： Diana Xiaobing Ma ,  Daisuke Tajima ,  Allen Zhao ,  Peter K. Loewenhardt ,  Timothy R. Webb

发明人： Diana Xiaobing Ma ,  Daisuke Tajima ,  Allen Zhao ,  Peter K. Loewenhardt ,  Timothy R. Webb

IPC分类号： C23F4/00 ,  H01J37/32 ,  H01L21/302 ,  H01L21/3065 ,  H01L21/3213 ,  B44C1/22 ,  C23F1/00 ,  H01L21/00

CPC分类号： H01J37/321 ,  C23F4/00 ,  H01L21/32136

摘要： A method of etching a multicomponent alloy on a substrate, without forming etchant residue on the substrate, is described. In the method, the substrate is placed in a process chamber comprising a plasma generator and plasma electrodes. A process gas comprising a volumetric flow ratio V.sub.r of (i) a chlorine-containing gas capable of ionizing to form dissociated Cl.sup.+ plasma ions and non-dissociated Cl.sub.2.sup.+ plasma ions, and (ii) an inert gas capable of enhancing dissociation of the chlorine-containing gas, in introduced into the process chamber. The process gas is ionized to form plasma ions that energetically impinge on the substrate by (i) applying RF current at a first power level to the plasma generator, and (ii) applying RF current at a second power level to the plasma electrodes. The combination of (i) the volumetric flow ratio V.sub.r of the process gas and (ii) the power ratio P.sub.r of the first power level to the second power level, is selected so that the chlorine-containing etchant gas ionizes to form dissociated Cl.sup.+ plasma ions and non-dissociated Cl.sub.2.sup.+ plasma ions in a number ratio of at least about 0.6:1. The increased amount of dissociated Cl.sup.+ ions relative to non-dissociated Cl.sub.2.sup.+ ions etches the multicomponent alloy on the substrate at an etch rate of at least about 500 nm/min, without forming etchant residue on the substrate.

摘要翻译： 描述了在衬底上蚀刻多组分合金而不在衬底上形成蚀刻剂残留物的方法。 在该方法中，将基板放置在包括等离子体发生器和等离子体电极的处理室中。 一种工艺气体，其包括（i）能够电离以形成离解的Cl +等离子体离子和非离解的Cl 2 +等离子体离子的含氯气体的体积流量比Vr，和（ii）能够增强氯 - 含有气体，被引入处理室。 通过（i）以等离子体发生器施加第一功率电平的RF电流，并且（ii）将第二功率电平的RF电流施加到等离子体电极，将工艺气体电离以形成能量地撞击衬底的等离子体离子。 选择（i）处理气体的体积流量比Vr和（ii）第一功率水平与第二功率水平的功率比Pr的组合，使得含氯蚀刻剂气体电离以形成离解的Cl +等离子体 离子和非离解的Cl2 +等离子体离子的数量比至少为约0.6:1。 解离的Cl +离子相对于未离解的Cl 2 +离子的量的增加量以至少约500nm / min的蚀刻速率蚀刻衬底上的多组分合金，而不在衬底上形成蚀刻剂残留物。

公开(公告)号：US5891348A

公开(公告)日：1999-04-06

申请号：US592821

申请日：1996-01-26

申请人： Yan Ye ,  Gerald Zheyao Yin ,  Diana Xiaobing Ma ,  Steve S. Y. Mak

发明人： Yan Ye ,  Gerald Zheyao Yin ,  Diana Xiaobing Ma ,  Steve S. Y. Mak

IPC分类号： H05H1/46 ,  C23C16/44 ,  C23C16/455 ,  C23F4/00 ,  H01J37/32 ,  H01L21/00 ,  H01L21/205 ,  H01L21/302 ,  H01L21/304 ,  H01L21/3065 ,  H01L21/687 ,  H05H1/00

CPC分类号： H01L21/67069 ,  H01J37/3244 ,  H01J37/32642 ,  H01L21/68721 ,  Y10S156/915

摘要： An apparatus (20) for uniformly processing substrates (25) having a surface with a center (80) and a peripheral edge (85). The apparatus (20) comprises (i) a process chamber (30) having a gas distributor (55) for distributing process gas in the process chamber (30); (ii) a support (75) for supporting a substrate (25) in the process chamber (30); (iii) a plasma generator for forming a plasma from the process gas in the process chamber (30); and (iv) a focus ring (90) in the process chamber (30). The focus ring (90) comprises (a) a wall (95) surrounding the substrate (25) to substantially contain the plasma on the substrate surface, and (b) a channel (100) in the wall (95). The channel (100) has an inlet (105) adjacent to, and extending substantially continuously around the peripheral edge (85) of the substrate surface. The inlet (105) of the channel (100) has a width w sized to allow a sufficient amount of process gas to flow into the channel (100) to maintain substantially equal processing rates at the center (80) and peripheral edge (85) of the substrate surface.

摘要翻译： 一种用于均匀地处理具有中心（80）和周缘（85）的表面的基板（25）的装置（20）。 设备（20）包括（i）具有用于在处理室（30）中分配处理气体的气体分配器（55）的处理室（30）。 （ii）用于在处理室（30）中支撑衬底（25）的支撑件（75）; （iii）用于在所述处理室（30）中从所述处理气体形成等离子体的等离子体发生器; 和（iv）处理室（30）中的聚焦环（90）。 聚焦环（90）包括（a）围绕基底（25）以在基底表面上基本上包含等离子体的壁（95），和（b）壁（95）中的通道（100）。 通道（100）具有与衬底表面的周边边缘（85）相邻并且基本上连续地延伸的入口（105）。 通道（100）的入口（105）具有宽度w，其尺寸允许足够量的处理气体流入通道（100），以在中心（80）和外围边缘（85）处保持基本上相等的处理速率， 的基板表面。

公开(公告)号：US06949203B2

公开(公告)日：2005-09-27

申请号：US10379439

申请日：2003-03-03

申请人： Chang-Lin Hsieh ,  Diana Xiaobing Ma ,  Brian Sy Yuan Shieh ,  Gerald Zheyao Yin ,  Jennifer Sun ,  Senh Thach ,  Lee Luo ,  Claes H. Bjorkman

发明人： Chang-Lin Hsieh ,  Diana Xiaobing Ma ,  Brian Sy Yuan Shieh ,  Gerald Zheyao Yin ,  Jennifer Sun ,  Senh Thach ,  Lee Luo ,  Claes H. Bjorkman

IPC分类号： H01L21/00 ,  H01L21/311 ,  H01L21/768

CPC分类号： H01L21/76832 ,  H01J37/32458 ,  H01L21/31116 ,  H01L21/31138 ,  H01L21/67184 ,  H01L21/67207 ,  H01L21/67219 ,  H01L21/6723 ,  H01L21/76802 ,  H01L21/76804 ,  H01L21/76807

摘要： An integrated in situ etch process performed in a multichamber substrate processing system having first and second etching chambers. In one embodiment the first chamber includes an interior surface that has been roughened to at least 100 Ra and the second chamber includes an interior surface that has a roughness of less than about 32 Ra. The process includes transferring a substrate having formed thereon in a downward direction a patterned photoresist mask, a dielectric layer, a barrier layer and a feature in the substrate to be contacted into the first chamber where the dielectric layer is etched in a process that encourages polymer formation over the roughened interior surface of the chamber. The substrate is then transferred from the first chamber to the second chamber under vacuum conditions and, in the second chamber, is exposed to a reactive plasma such as oxygen to strip away the photoresist mask deposited over the substrate. After the photoresist mask is stripped, the barrier layer is etched through to the feature to be contacted in the second chamber of the multichamber substrate processing system using a process that discourages polymer formation over the relatively smooth interior surface of the second chamber. All three etching steps are performed in a system level in situ process so that the substrate is not exposed to an ambient between steps. In some embodiments the interior surface of the first chamber has a roughness between 100 and 200 Ra and in other embodiments the roughness of the first chamber's interior surface is between 110 and 160 Ra.

摘要翻译： 在具有第一和第二蚀刻室的多室衬底处理系统中执行的集成原位蚀刻工艺。 在一个实施例中，第一室包括已经被粗糙化至少100个的内表面，而第二室包括具有小于约32μm的粗糙度的内表面， / SUB>。 该方法包括在向下的方向上转移其上形成有图案的光致抗蚀剂掩模，电介质层，阻挡层和衬底中的特征的衬底，以接触第一室，其中介电层被刻蚀在鼓励聚合物的过程中 在室的粗糙内表面上形成。 然后在真空条件下将衬底从第一室转移到第二室，并且在第二室中暴露于诸如氧的反应性等离子体以剥离沉积在衬底上的光致抗蚀剂掩模。 在光致抗蚀剂掩模被剥离之后，通过阻止在第二室的相对光滑的内表面上聚合物形成的工艺，阻挡层被蚀刻到多室基板处理系统的第二室中以接触的特征。 所有三个蚀刻步骤都是在系统级原位工艺中进行的，因此基板不会在台阶之间暴露于环境中。 在一些实施例中，第一室的内表面具有在100和200之间的粗糙度，而在其它实施例中，第一室的内表面的粗糙度在110和160之间， SUB>。